Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
6 | * linux/drivers/char/cyclades.c | |
7 | * | |
8 | * This file contains the driver for the Cyclades async multiport | |
9 | * serial boards. | |
10 | * | |
11 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
12 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 13 | * |
ebdb5135 | 14 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
15 | * |
16 | * Much of the design and some of the code came from serial.c | |
17 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
18 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
19 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 20 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 21 | * |
1da177e4 LT |
22 | */ |
23 | ||
ebdb5135 | 24 | #define CY_VERSION "2.6" |
096dcfce | 25 | |
1da177e4 LT |
26 | /* If you need to install more boards than NR_CARDS, change the constant |
27 | in the definition below. No other change is necessary to support up to | |
28 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
29 | ||
02f1175c | 30 | #define NR_CARDS 4 |
1da177e4 LT |
31 | |
32 | /* | |
33 | If the total number of ports is larger than NR_PORTS, change this | |
34 | constant in the definition below. No other change is necessary to | |
35 | support more boards/ports. */ | |
36 | ||
02f1175c | 37 | #define NR_PORTS 256 |
1da177e4 | 38 | |
1da177e4 LT |
39 | #define ZO_V1 0 |
40 | #define ZO_V2 1 | |
41 | #define ZE_V1 2 | |
42 | ||
43 | #define SERIAL_PARANOIA_CHECK | |
44 | #undef CY_DEBUG_OPEN | |
45 | #undef CY_DEBUG_THROTTLE | |
46 | #undef CY_DEBUG_OTHER | |
47 | #undef CY_DEBUG_IO | |
48 | #undef CY_DEBUG_COUNT | |
49 | #undef CY_DEBUG_DTR | |
50 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
51 | #undef CY_DEBUG_INTERRUPTS | |
52 | #undef CY_16Y_HACK | |
53 | #undef CY_ENABLE_MONITORING | |
54 | #undef CY_PCI_DEBUG | |
55 | ||
1da177e4 | 56 | /* |
15ed6cc0 | 57 | * Include section |
1da177e4 | 58 | */ |
1da177e4 LT |
59 | #include <linux/module.h> |
60 | #include <linux/errno.h> | |
61 | #include <linux/signal.h> | |
62 | #include <linux/sched.h> | |
63 | #include <linux/timer.h> | |
64 | #include <linux/interrupt.h> | |
65 | #include <linux/tty.h> | |
33f0f88f | 66 | #include <linux/tty_flip.h> |
1da177e4 | 67 | #include <linux/serial.h> |
405f5571 | 68 | #include <linux/smp_lock.h> |
1da177e4 LT |
69 | #include <linux/major.h> |
70 | #include <linux/string.h> | |
71 | #include <linux/fcntl.h> | |
72 | #include <linux/ptrace.h> | |
73 | #include <linux/cyclades.h> | |
74 | #include <linux/mm.h> | |
75 | #include <linux/ioport.h> | |
76 | #include <linux/init.h> | |
77 | #include <linux/delay.h> | |
78 | #include <linux/spinlock.h> | |
79 | #include <linux/bitops.h> | |
054f5b0a | 80 | #include <linux/firmware.h> |
9f56fad7 | 81 | #include <linux/device.h> |
1da177e4 | 82 | |
15ed6cc0 | 83 | #include <linux/io.h> |
15ed6cc0 | 84 | #include <linux/uaccess.h> |
1da177e4 | 85 | |
1da177e4 LT |
86 | #include <linux/kernel.h> |
87 | #include <linux/pci.h> | |
88 | ||
89 | #include <linux/stat.h> | |
90 | #include <linux/proc_fs.h> | |
444697d6 | 91 | #include <linux/seq_file.h> |
1da177e4 | 92 | |
02f1175c | 93 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
1da177e4 | 94 | |
1da177e4 LT |
95 | #ifndef SERIAL_XMIT_SIZE |
96 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
97 | #endif | |
1da177e4 LT |
98 | |
99 | #define STD_COM_FLAGS (0) | |
100 | ||
054f5b0a JS |
101 | /* firmware stuff */ |
102 | #define ZL_MAX_BLOCKS 16 | |
103 | #define DRIVER_VERSION 0x02010203 | |
104 | #define RAM_SIZE 0x80000 | |
105 | ||
054f5b0a JS |
106 | enum zblock_type { |
107 | ZBLOCK_PRG = 0, | |
108 | ZBLOCK_FPGA = 1 | |
109 | }; | |
110 | ||
111 | struct zfile_header { | |
112 | char name[64]; | |
113 | char date[32]; | |
114 | char aux[32]; | |
115 | u32 n_config; | |
116 | u32 config_offset; | |
117 | u32 n_blocks; | |
118 | u32 block_offset; | |
119 | u32 reserved[9]; | |
120 | } __attribute__ ((packed)); | |
121 | ||
122 | struct zfile_config { | |
123 | char name[64]; | |
124 | u32 mailbox; | |
125 | u32 function; | |
126 | u32 n_blocks; | |
127 | u32 block_list[ZL_MAX_BLOCKS]; | |
128 | } __attribute__ ((packed)); | |
129 | ||
130 | struct zfile_block { | |
131 | u32 type; | |
132 | u32 file_offset; | |
133 | u32 ram_offset; | |
134 | u32 size; | |
135 | } __attribute__ ((packed)); | |
136 | ||
1da177e4 LT |
137 | static struct tty_driver *cy_serial_driver; |
138 | ||
139 | #ifdef CONFIG_ISA | |
140 | /* This is the address lookup table. The driver will probe for | |
141 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
142 | driver to probe addresses at a different address, add it to | |
143 | this table. If the driver is probing some other board and | |
144 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
145 | */ |
146 | ||
147 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
148 | 0xD0000, |
149 | 0xD2000, | |
150 | 0xD4000, | |
151 | 0xD6000, | |
152 | 0xD8000, | |
153 | 0xDA000, | |
154 | 0xDC000, | |
155 | 0xDE000, | |
156 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 157 | }; |
02f1175c | 158 | |
fe971071 | 159 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 | 160 | |
3046d50e JS |
161 | static long maddr[NR_CARDS]; |
162 | static int irq[NR_CARDS]; | |
1da177e4 LT |
163 | |
164 | module_param_array(maddr, long, NULL, 0); | |
165 | module_param_array(irq, int, NULL, 0); | |
1da177e4 | 166 | |
02f1175c | 167 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
168 | |
169 | /* This is the per-card data structure containing address, irq, number of | |
170 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
171 | */ | |
172 | static struct cyclades_card cy_card[NR_CARDS]; | |
173 | ||
02f1175c | 174 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 175 | |
1da177e4 LT |
176 | /* |
177 | * This is used to look up the divisor speeds and the timeouts | |
178 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 179 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
180 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
181 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
182 | * HI VHI | |
183 | * 20 | |
184 | */ | |
ebdb5135 | 185 | static const int baud_table[] = { |
02f1175c JS |
186 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
187 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
188 | 230400, 0 | |
189 | }; | |
190 | ||
ebdb5135 | 191 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
192 | /* value => 00 01 02 03 04 */ |
193 | /* divide by 8 32 128 512 2048 */ | |
194 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
195 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
196 | }; | |
197 | ||
ebdb5135 | 198 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
199 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
200 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
201 | }; | |
202 | ||
ebdb5135 | 203 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
204 | /* value => 00 01 02 03 04 */ |
205 | /* divide by 8 32 128 512 2048 */ | |
206 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
207 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
208 | 0x00 | |
209 | }; | |
210 | ||
ebdb5135 | 211 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
212 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
213 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
214 | 0x21 | |
215 | }; | |
216 | ||
ebdb5135 | 217 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
218 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
219 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
220 | 0x07 | |
221 | }; | |
1da177e4 LT |
222 | |
223 | /* | |
224 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
225 | * The cyclades_port structure member rflow and the vector rflow_thr |
226 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
227 | * data loss even when the system interrupt latency is too high. These flags | |
228 | * are to be used only with very special applications. Setting these flags | |
229 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
230 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
231 | * cables. |
232 | */ | |
233 | ||
ebdb5135 | 234 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
235 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
236 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
237 | 0x0a | |
238 | }; | |
1da177e4 LT |
239 | |
240 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
241 | * address order. This look-up table overcomes that problem. | |
242 | */ | |
f0eefdc3 | 243 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
244 | 0x0400, |
245 | 0x0800, | |
246 | 0x0C00, | |
247 | 0x0200, | |
248 | 0x0600, | |
249 | 0x0A00, | |
250 | 0x0E00 | |
251 | }; | |
1da177e4 LT |
252 | |
253 | /* PCI related definitions */ | |
254 | ||
1da177e4 | 255 | #ifdef CONFIG_PCI |
ebdb5135 | 256 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
257 | /* PCI < 1Mb */ |
258 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
259 | /* PCI > 1Mb */ | |
260 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
261 | /* 4Y PCI < 1Mb */ | |
262 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
263 | /* 4Y PCI > 1Mb */ | |
264 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
265 | /* 8Y PCI < 1Mb */ | |
266 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
267 | /* 8Y PCI > 1Mb */ | |
268 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
269 | /* Z PCI < 1Mb */ | |
270 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
271 | /* Z PCI > 1Mb */ | |
272 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 273 | { } /* end of table */ |
02f1175c | 274 | }; |
893de2df | 275 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
276 | #endif |
277 | ||
278 | static void cy_start(struct tty_struct *); | |
d13549f8 | 279 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 280 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
281 | #ifdef CONFIG_ISA |
282 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 283 | #endif /* CONFIG_ISA */ |
1da177e4 | 284 | |
1da177e4 LT |
285 | #ifndef CONFIG_CYZ_INTR |
286 | static void cyz_poll(unsigned long); | |
287 | ||
288 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
289 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
290 | ||
8d06afab | 291 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 292 | |
02f1175c | 293 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
294 | static void cyz_rx_restart(unsigned long); |
295 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 296 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 297 | |
3aeea5b9 JS |
298 | static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
299 | { | |
300 | struct cyclades_card *card = port->card; | |
301 | ||
302 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
303 | } | |
304 | ||
305 | static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) | |
306 | { | |
307 | struct cyclades_card *card = port->card; | |
308 | ||
309 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
310 | } | |
311 | ||
2693f485 JS |
312 | static inline bool cy_is_Z(struct cyclades_card *card) |
313 | { | |
314 | return card->num_chips == (unsigned int)-1; | |
315 | } | |
316 | ||
317 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
318 | { | |
319 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
320 | } | |
321 | ||
322 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
323 | { | |
324 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
325 | } | |
326 | ||
327 | static inline bool cyz_is_loaded(struct cyclades_card *card) | |
328 | { | |
329 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
330 | ||
331 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
332 | readl(&fw_id->signature) == ZFIRM_ID; | |
333 | } | |
334 | ||
02f1175c | 335 | static inline int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 336 | const char *name, const char *routine) |
1da177e4 LT |
337 | { |
338 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 339 | if (!info) { |
21719191 JS |
340 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
341 | "in %s\n", name, routine); | |
02f1175c JS |
342 | return 1; |
343 | } | |
344 | ||
02f1175c | 345 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
346 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
347 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
348 | return 1; |
349 | } | |
1da177e4 | 350 | #endif |
02f1175c | 351 | return 0; |
ebdb5135 | 352 | } |
1da177e4 | 353 | |
1da177e4 LT |
354 | /***********************************************************/ |
355 | /********* Start of block of Cyclom-Y specific code ********/ | |
356 | ||
357 | /* This routine waits up to 1000 micro-seconds for the previous | |
358 | command to the Cirrus chip to complete and then issues the | |
359 | new command. An error is returned if the previous command | |
360 | didn't finish within the time limit. | |
361 | ||
362 | This function is only called from inside spinlock-protected code. | |
363 | */ | |
3aeea5b9 | 364 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 365 | { |
3aeea5b9 | 366 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 367 | unsigned int i; |
1da177e4 | 368 | |
02f1175c JS |
369 | /* Check to see that the previous command has completed */ |
370 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 371 | if (readb(ccr) == 0) |
02f1175c | 372 | break; |
02f1175c | 373 | udelay(10L); |
1da177e4 | 374 | } |
02f1175c JS |
375 | /* if the CCR never cleared, the previous command |
376 | didn't finish within the "reasonable time" */ | |
377 | if (i == 100) | |
096dcfce | 378 | return -1; |
1da177e4 | 379 | |
02f1175c | 380 | /* Issue the new command */ |
3aeea5b9 | 381 | cy_writeb(ccr, cmd); |
1da177e4 | 382 | |
096dcfce | 383 | return 0; |
3aeea5b9 JS |
384 | } |
385 | ||
386 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
387 | { | |
388 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
389 | port->card->bus_index); | |
390 | } | |
1da177e4 LT |
391 | |
392 | #ifdef CONFIG_ISA | |
393 | /* ISA interrupt detection code */ | |
15ed6cc0 | 394 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 395 | { |
02f1175c JS |
396 | int irq; |
397 | unsigned long irqs, flags; | |
398 | int save_xir, save_car; | |
399 | int index = 0; /* IRQ probing is only for ISA */ | |
400 | ||
401 | /* forget possible initially masked and pending IRQ */ | |
402 | irq = probe_irq_off(probe_irq_on()); | |
403 | ||
404 | /* Clear interrupts on the board first */ | |
405 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
406 | /* Cy_ClrIntr is 0x1800 */ | |
407 | ||
408 | irqs = probe_irq_on(); | |
409 | /* Wait ... */ | |
f6e208c1 | 410 | msleep(5); |
02f1175c JS |
411 | |
412 | /* Enable the Tx interrupts on the CD1400 */ | |
413 | local_irq_save(flags); | |
414 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 415 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
416 | |
417 | cy_writeb(address + (CyCAR << index), 0); | |
418 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 419 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
420 | local_irq_restore(flags); |
421 | ||
422 | /* Wait ... */ | |
f6e208c1 | 423 | msleep(5); |
02f1175c JS |
424 | |
425 | /* Check which interrupt is in use */ | |
426 | irq = probe_irq_off(irqs); | |
427 | ||
428 | /* Clean up */ | |
db05c3b1 JS |
429 | save_xir = (u_char) readb(address + (CyTIR << index)); |
430 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
431 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
432 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 433 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
434 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
435 | cy_writeb(address + (CyCAR << index), (save_car)); | |
436 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
437 | /* Cy_ClrIntr is 0x1800 */ | |
438 | ||
439 | return (irq > 0) ? irq : 0; | |
1da177e4 | 440 | } |
02f1175c | 441 | #endif /* CONFIG_ISA */ |
1da177e4 | 442 | |
ce97a097 JS |
443 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
444 | void __iomem *base_addr) | |
e941027f JS |
445 | { |
446 | struct cyclades_port *info; | |
447 | struct tty_struct *tty; | |
65f76a82 | 448 | int len, index = cinfo->bus_index; |
3aeea5b9 | 449 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 450 | |
e941027f | 451 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 452 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 453 | #endif |
ce97a097 | 454 | /* determine the channel & change to that context */ |
65f76a82 JS |
455 | save_xir = readb(base_addr + (CyRIR << index)); |
456 | channel = save_xir & CyIRChannel; | |
ce97a097 | 457 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
458 | save_car = cyy_readb(info, CyCAR); |
459 | cyy_writeb(info, CyCAR, save_xir); | |
460 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 461 | |
d13549f8 | 462 | tty = tty_port_tty_get(&info->port); |
ce97a097 | 463 | /* if there is nowhere to put the data, discard it */ |
d13549f8 | 464 | if (tty == NULL) { |
3aeea5b9 JS |
465 | if (ivr == CyIVRRxEx) { /* exception */ |
466 | data = cyy_readb(info, CyRDSR); | |
ce97a097 | 467 | } else { /* normal character reception */ |
3aeea5b9 | 468 | char_count = cyy_readb(info, CyRDCR); |
ce97a097 | 469 | while (char_count--) |
3aeea5b9 | 470 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
471 | } |
472 | goto end; | |
473 | } | |
474 | /* there is an open port for this data */ | |
3aeea5b9 JS |
475 | if (ivr == CyIVRRxEx) { /* exception */ |
476 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
477 | |
478 | /* For statistics only */ | |
479 | if (data & CyBREAK) | |
480 | info->icount.brk++; | |
481 | else if (data & CyFRAME) | |
482 | info->icount.frame++; | |
483 | else if (data & CyPARITY) | |
484 | info->icount.parity++; | |
485 | else if (data & CyOVERRUN) | |
486 | info->icount.overrun++; | |
487 | ||
488 | if (data & info->ignore_status_mask) { | |
489 | info->icount.rx++; | |
d13549f8 | 490 | tty_kref_put(tty); |
ce97a097 JS |
491 | return; |
492 | } | |
493 | if (tty_buffer_request_room(tty, 1)) { | |
494 | if (data & info->read_status_mask) { | |
495 | if (data & CyBREAK) { | |
496 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
497 | cyy_readb(info, CyRDSR), |
498 | TTY_BREAK); | |
ce97a097 | 499 | info->icount.rx++; |
77451e53 | 500 | if (info->port.flags & ASYNC_SAK) |
ce97a097 JS |
501 | do_SAK(tty); |
502 | } else if (data & CyFRAME) { | |
15ed6cc0 | 503 | tty_insert_flip_char(tty, |
3aeea5b9 JS |
504 | cyy_readb(info, CyRDSR), |
505 | TTY_FRAME); | |
ce97a097 JS |
506 | info->icount.rx++; |
507 | info->idle_stats.frame_errs++; | |
508 | } else if (data & CyPARITY) { | |
509 | /* Pieces of seven... */ | |
510 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
511 | cyy_readb(info, CyRDSR), |
512 | TTY_PARITY); | |
ce97a097 JS |
513 | info->icount.rx++; |
514 | info->idle_stats.parity_errs++; | |
515 | } else if (data & CyOVERRUN) { | |
516 | tty_insert_flip_char(tty, 0, | |
517 | TTY_OVERRUN); | |
518 | info->icount.rx++; | |
519 | /* If the flip buffer itself is | |
520 | overflowing, we still lose | |
521 | the next incoming character. | |
522 | */ | |
523 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
524 | cyy_readb(info, CyRDSR), |
525 | TTY_FRAME); | |
02f1175c | 526 | info->icount.rx++; |
02f1175c | 527 | info->idle_stats.overruns++; |
ce97a097 JS |
528 | /* These two conditions may imply */ |
529 | /* a normal read should be done. */ | |
530 | /* } else if(data & CyTIMEOUT) { */ | |
531 | /* } else if(data & CySPECHAR) { */ | |
532 | } else { | |
533 | tty_insert_flip_char(tty, 0, | |
534 | TTY_NORMAL); | |
535 | info->icount.rx++; | |
02f1175c | 536 | } |
ce97a097 JS |
537 | } else { |
538 | tty_insert_flip_char(tty, 0, TTY_NORMAL); | |
539 | info->icount.rx++; | |
540 | } | |
541 | } else { | |
542 | /* there was a software buffer overrun and nothing | |
543 | * could be done about it!!! */ | |
544 | info->icount.buf_overrun++; | |
545 | info->idle_stats.overruns++; | |
546 | } | |
547 | } else { /* normal character reception */ | |
548 | /* load # chars available from the chip */ | |
3aeea5b9 | 549 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
550 | |
551 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
552 | ++info->mon.int_count; |
553 | info->mon.char_count += char_count; | |
554 | if (char_count > info->mon.char_max) | |
555 | info->mon.char_max = char_count; | |
556 | info->mon.char_last = char_count; | |
e941027f | 557 | #endif |
ce97a097 JS |
558 | len = tty_buffer_request_room(tty, char_count); |
559 | while (len--) { | |
3aeea5b9 | 560 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
561 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
562 | info->idle_stats.recv_bytes++; | |
563 | info->icount.rx++; | |
e941027f | 564 | #ifdef CY_16Y_HACK |
ce97a097 | 565 | udelay(10L); |
e941027f | 566 | #endif |
e941027f | 567 | } |
ce97a097 | 568 | info->idle_stats.recv_idle = jiffies; |
e941027f | 569 | } |
ce97a097 | 570 | tty_schedule_flip(tty); |
d13549f8 | 571 | tty_kref_put(tty); |
ce97a097 JS |
572 | end: |
573 | /* end of service */ | |
3aeea5b9 JS |
574 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
575 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 576 | } |
e941027f | 577 | |
65f76a82 | 578 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
579 | void __iomem *base_addr) |
580 | { | |
581 | struct cyclades_port *info; | |
d13549f8 | 582 | struct tty_struct *tty; |
65f76a82 JS |
583 | int char_count, index = cinfo->bus_index; |
584 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
585 | |
586 | /* Since we only get here when the transmit buffer | |
587 | is empty, we know we can always stuff a dozen | |
588 | characters. */ | |
e941027f | 589 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 590 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
591 | #endif |
592 | ||
ce97a097 | 593 | /* determine the channel & change to that context */ |
65f76a82 JS |
594 | save_xir = readb(base_addr + (CyTIR << index)); |
595 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
596 | save_car = readb(base_addr + (CyCAR << index)); |
597 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
598 | ||
ce97a097 | 599 | info = &cinfo->ports[channel + chip * 4]; |
d13549f8 JS |
600 | tty = tty_port_tty_get(&info->port); |
601 | if (tty == NULL) { | |
3aeea5b9 | 602 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
603 | goto end; |
604 | } | |
02f1175c | 605 | |
ce97a097 JS |
606 | /* load the on-chip space for outbound data */ |
607 | char_count = info->xmit_fifo_size; | |
02f1175c | 608 | |
ce97a097 JS |
609 | if (info->x_char) { /* send special char */ |
610 | outch = info->x_char; | |
3aeea5b9 | 611 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
612 | char_count--; |
613 | info->icount.tx++; | |
614 | info->x_char = 0; | |
615 | } | |
02f1175c | 616 | |
ce97a097 JS |
617 | if (info->breakon || info->breakoff) { |
618 | if (info->breakon) { | |
3aeea5b9 JS |
619 | cyy_writeb(info, CyTDR, 0); |
620 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
621 | info->breakon = 0; |
622 | char_count -= 2; | |
e941027f | 623 | } |
ce97a097 | 624 | if (info->breakoff) { |
3aeea5b9 JS |
625 | cyy_writeb(info, CyTDR, 0); |
626 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
627 | info->breakoff = 0; |
628 | char_count -= 2; | |
e941027f | 629 | } |
ce97a097 | 630 | } |
02f1175c | 631 | |
ce97a097 JS |
632 | while (char_count-- > 0) { |
633 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
634 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
635 | cyy_writeb(info, CySRER, | |
636 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 637 | } else { |
3aeea5b9 JS |
638 | cyy_writeb(info, CySRER, CyTxMpty | |
639 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 640 | } |
ce97a097 JS |
641 | goto done; |
642 | } | |
77451e53 | 643 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
644 | cyy_writeb(info, CySRER, |
645 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
646 | goto done; |
647 | } | |
d13549f8 | 648 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
649 | cyy_writeb(info, CySRER, |
650 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
651 | goto done; |
652 | } | |
653 | /* Because the Embedded Transmit Commands have been enabled, | |
654 | * we must check to see if the escape character, NULL, is being | |
655 | * sent. If it is, we must ensure that there is room for it to | |
656 | * be doubled in the output stream. Therefore we no longer | |
657 | * advance the pointer when the character is fetched, but | |
658 | * rather wait until after the check for a NULL output | |
659 | * character. This is necessary because there may not be room | |
660 | * for the two chars needed to send a NULL.) | |
661 | */ | |
77451e53 | 662 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
663 | if (outch) { |
664 | info->xmit_cnt--; | |
665 | info->xmit_tail = (info->xmit_tail + 1) & | |
666 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 667 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
668 | info->icount.tx++; |
669 | } else { | |
670 | if (char_count > 1) { | |
02f1175c JS |
671 | info->xmit_cnt--; |
672 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 673 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
674 | cyy_writeb(info, CyTDR, outch); |
675 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 676 | info->icount.tx++; |
ce97a097 | 677 | char_count--; |
02f1175c | 678 | } |
e941027f | 679 | } |
e941027f JS |
680 | } |
681 | ||
ce97a097 | 682 | done: |
d13549f8 JS |
683 | tty_wakeup(tty); |
684 | tty_kref_put(tty); | |
ce97a097 JS |
685 | end: |
686 | /* end of service */ | |
3aeea5b9 JS |
687 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
688 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 689 | } |
02f1175c | 690 | |
ce97a097 JS |
691 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
692 | void __iomem *base_addr) | |
693 | { | |
694 | struct cyclades_port *info; | |
d13549f8 | 695 | struct tty_struct *tty; |
65f76a82 JS |
696 | int index = cinfo->bus_index; |
697 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
698 | |
699 | /* determine the channel & change to that context */ | |
65f76a82 JS |
700 | save_xir = readb(base_addr + (CyMIR << index)); |
701 | channel = save_xir & CyIRChannel; | |
ce97a097 | 702 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
703 | save_car = cyy_readb(info, CyCAR); |
704 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 705 | |
3aeea5b9 JS |
706 | mdm_change = cyy_readb(info, CyMISR); |
707 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 708 | |
d13549f8 JS |
709 | tty = tty_port_tty_get(&info->port); |
710 | if (!tty) | |
ce97a097 JS |
711 | goto end; |
712 | ||
713 | if (mdm_change & CyANY_DELTA) { | |
714 | /* For statistics only */ | |
715 | if (mdm_change & CyDCD) | |
716 | info->icount.dcd++; | |
717 | if (mdm_change & CyCTS) | |
718 | info->icount.cts++; | |
719 | if (mdm_change & CyDSR) | |
720 | info->icount.dsr++; | |
721 | if (mdm_change & CyRI) | |
722 | info->icount.rng++; | |
723 | ||
bdc04e31 | 724 | wake_up_interruptible(&info->port.delta_msr_wait); |
ce97a097 JS |
725 | } |
726 | ||
77451e53 | 727 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
174e6fe0 JS |
728 | if (mdm_status & CyDCD) |
729 | wake_up_interruptible(&info->port.open_wait); | |
730 | else | |
d13549f8 | 731 | tty_hangup(tty); |
ce97a097 | 732 | } |
77451e53 | 733 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
d13549f8 | 734 | if (tty->hw_stopped) { |
ce97a097 JS |
735 | if (mdm_status & CyCTS) { |
736 | /* cy_start isn't used | |
737 | because... !!! */ | |
d13549f8 | 738 | tty->hw_stopped = 0; |
3aeea5b9 JS |
739 | cyy_writeb(info, CySRER, |
740 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 741 | tty_wakeup(tty); |
02f1175c | 742 | } |
ce97a097 JS |
743 | } else { |
744 | if (!(mdm_status & CyCTS)) { | |
745 | /* cy_stop isn't used | |
746 | because ... !!! */ | |
d13549f8 | 747 | tty->hw_stopped = 1; |
3aeea5b9 JS |
748 | cyy_writeb(info, CySRER, |
749 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 750 | } |
e941027f | 751 | } |
e941027f | 752 | } |
ce97a097 JS |
753 | /* if (mdm_change & CyDSR) { |
754 | } | |
755 | if (mdm_change & CyRI) { | |
756 | }*/ | |
d13549f8 | 757 | tty_kref_put(tty); |
ce97a097 JS |
758 | end: |
759 | /* end of service */ | |
3aeea5b9 JS |
760 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
761 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
762 | } |
763 | ||
1da177e4 LT |
764 | /* The real interrupt service routine is called |
765 | whenever the card wants its hand held--chars | |
766 | received, out buffer empty, modem change, etc. | |
767 | */ | |
02f1175c | 768 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 769 | { |
02f1175c | 770 | int status; |
f7429034 | 771 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 772 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 773 | unsigned int chip, too_many, had_work; |
02f1175c | 774 | int index; |
02f1175c | 775 | |
f7429034 | 776 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 777 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
778 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
779 | irq); | |
1da177e4 | 780 | #endif |
02f1175c JS |
781 | return IRQ_NONE; /* spurious interrupt */ |
782 | } | |
783 | ||
784 | card_base_addr = cinfo->base_addr; | |
785 | index = cinfo->bus_index; | |
786 | ||
f1e83c6c JS |
787 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
788 | if (unlikely(card_base_addr == NULL)) | |
789 | return IRQ_HANDLED; | |
790 | ||
02f1175c JS |
791 | /* This loop checks all chips in the card. Make a note whenever |
792 | _any_ chip had some work to do, as this is considered an | |
793 | indication that there will be more to do. Only when no chip | |
794 | has any work does this outermost loop exit. | |
795 | */ | |
796 | do { | |
797 | had_work = 0; | |
798 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
799 | base_addr = cinfo->base_addr + | |
800 | (cy_chip_offset[chip] << index); | |
801 | too_many = 0; | |
db05c3b1 | 802 | while ((status = readb(base_addr + |
02f1175c JS |
803 | (CySVRR << index))) != 0x00) { |
804 | had_work++; | |
805 | /* The purpose of the following test is to ensure that | |
806 | no chip can monopolize the driver. This forces the | |
807 | chips to be checked in a round-robin fashion (after | |
808 | draining each of a bunch (1000) of characters). | |
809 | */ | |
ce97a097 | 810 | if (1000 < too_many++) |
02f1175c | 811 | break; |
1c0a387c | 812 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
813 | if (status & CySRReceive) /* rx intr */ |
814 | cyy_chip_rx(cinfo, chip, base_addr); | |
815 | if (status & CySRTransmit) /* tx intr */ | |
816 | cyy_chip_tx(cinfo, chip, base_addr); | |
817 | if (status & CySRModem) /* modem intr */ | |
818 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 819 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
820 | } |
821 | } | |
822 | } while (had_work); | |
823 | ||
824 | /* clear interrupts */ | |
825 | spin_lock(&cinfo->card_lock); | |
826 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
827 | /* Cy_ClrIntr is 0x1800 */ | |
828 | spin_unlock(&cinfo->card_lock); | |
829 | return IRQ_HANDLED; | |
830 | } /* cyy_interrupt */ | |
1da177e4 | 831 | |
4d768200 JS |
832 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
833 | unsigned int clear) | |
834 | { | |
835 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 836 | int channel = info->line - card->first_line; |
0d348729 | 837 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 838 | |
4d768200 | 839 | channel &= 0x03; |
4d768200 | 840 | |
0d348729 JS |
841 | if (info->rtsdtr_inv) { |
842 | msvrr = CyMSVR2; | |
843 | msvrd = CyMSVR1; | |
844 | rts = CyDTR; | |
845 | dtr = CyRTS; | |
846 | } else { | |
847 | msvrr = CyMSVR1; | |
848 | msvrd = CyMSVR2; | |
849 | rts = CyRTS; | |
850 | dtr = CyDTR; | |
851 | } | |
4d768200 | 852 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
853 | cyy_writeb(info, CyCAR, channel); |
854 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
855 | } |
856 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
857 | cyy_writeb(info, CyCAR, channel); |
858 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
859 | } |
860 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
861 | cyy_writeb(info, CyCAR, channel); |
862 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
863 | #ifdef CY_DEBUG_DTR |
864 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
865 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
866 | cyy_readb(info, CyMSVR1), |
867 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
868 | #endif |
869 | } | |
870 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
871 | cyy_writeb(info, CyCAR, channel); |
872 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
873 | #ifdef CY_DEBUG_DTR |
874 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
875 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
876 | cyy_readb(info, CyMSVR1), |
877 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
878 | #endif |
879 | } | |
880 | } | |
881 | ||
1da177e4 LT |
882 | /***********************************************************/ |
883 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 884 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
885 | /***********************************************************/ |
886 | ||
887 | static int | |
02f1175c | 888 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 889 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 890 | { |
f0eefdc3 | 891 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
892 | unsigned long loc_doorbell; |
893 | ||
97e87f8e | 894 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
895 | if (loc_doorbell) { |
896 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
897 | *channel = readl(&board_ctrl->fwcmd_channel); |
898 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 899 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
900 | return 1; |
901 | } | |
902 | return 0; | |
903 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
904 | |
905 | static int | |
02f1175c | 906 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 907 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 908 | { |
f0eefdc3 | 909 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 910 | __u32 __iomem *pci_doorbell; |
65f76a82 | 911 | unsigned int index; |
02f1175c | 912 | |
2693f485 | 913 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 914 | return -1; |
15ed6cc0 | 915 | |
02f1175c | 916 | index = 0; |
97e87f8e | 917 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 918 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 919 | if (index++ == 1000) |
db05c3b1 | 920 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
921 | udelay(50L); |
922 | } | |
923 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
924 | cy_writel(&board_ctrl->hcmd_param, param); | |
925 | cy_writel(pci_doorbell, (long)cmd); | |
926 | ||
096dcfce | 927 | return 0; |
02f1175c | 928 | } /* cyz_issue_cmd */ |
1da177e4 | 929 | |
f0eefdc3 | 930 | static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 931 | { |
f0eefdc3 | 932 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 933 | struct cyclades_card *cinfo = info->card; |
65f76a82 | 934 | unsigned int char_count; |
02f1175c | 935 | int len; |
1da177e4 | 936 | #ifdef BLOCKMOVE |
ce71b0ff | 937 | unsigned char *buf; |
1da177e4 | 938 | #else |
02f1175c | 939 | char data; |
1da177e4 | 940 | #endif |
ad39c300 | 941 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 942 | |
db05c3b1 JS |
943 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
944 | rx_put = readl(&buf_ctrl->rx_put); | |
945 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
946 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
947 | if (rx_put >= rx_get) |
948 | char_count = rx_put - rx_get; | |
949 | else | |
950 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 951 | |
02f1175c | 952 | if (char_count) { |
1da177e4 | 953 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
954 | info->mon.int_count++; |
955 | info->mon.char_count += char_count; | |
956 | if (char_count > info->mon.char_max) | |
957 | info->mon.char_max = char_count; | |
958 | info->mon.char_last = char_count; | |
1da177e4 | 959 | #endif |
f7429034 | 960 | if (tty == NULL) { |
02f1175c JS |
961 | /* flush received characters */ |
962 | new_rx_get = (new_rx_get + char_count) & | |
963 | (rx_bufsize - 1); | |
964 | info->rflush_count++; | |
965 | } else { | |
1da177e4 | 966 | #ifdef BLOCKMOVE |
02f1175c JS |
967 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
968 | for performance, but because of buffer boundaries, there | |
969 | may be several steps to the operation */ | |
ce71b0ff JS |
970 | while (1) { |
971 | len = tty_prepare_flip_string(tty, &buf, | |
972 | char_count); | |
973 | if (!len) | |
974 | break; | |
975 | ||
976 | len = min_t(unsigned int, min(len, char_count), | |
977 | rx_bufsize - new_rx_get); | |
978 | ||
979 | memcpy_fromio(buf, cinfo->base_addr + | |
980 | rx_bufaddr + new_rx_get, len); | |
981 | ||
982 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 983 | (rx_bufsize - 1); |
ce71b0ff JS |
984 | char_count -= len; |
985 | info->icount.rx += len; | |
986 | info->idle_stats.recv_bytes += len; | |
02f1175c | 987 | } |
1da177e4 | 988 | #else |
02f1175c JS |
989 | len = tty_buffer_request_room(tty, char_count); |
990 | while (len--) { | |
db05c3b1 | 991 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c | 992 | new_rx_get); |
15ed6cc0 AC |
993 | new_rx_get = (new_rx_get + 1) & |
994 | (rx_bufsize - 1); | |
02f1175c JS |
995 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
996 | info->idle_stats.recv_bytes++; | |
997 | info->icount.rx++; | |
998 | } | |
1da177e4 LT |
999 | #endif |
1000 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1001 | /* Recalculate the number of chars in the RX buffer and issue |
1002 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1003 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1004 | if (rx_put >= rx_get) |
1005 | char_count = rx_put - rx_get; | |
1006 | else | |
1007 | char_count = rx_put - rx_get + rx_bufsize; | |
65f76a82 | 1008 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
ebafeeff JS |
1009 | !timer_pending(&cyz_rx_full_timer[ |
1010 | info->line])) | |
1011 | mod_timer(&cyz_rx_full_timer[info->line], | |
1012 | jiffies + 1); | |
1da177e4 | 1013 | #endif |
02f1175c JS |
1014 | info->idle_stats.recv_idle = jiffies; |
1015 | tty_schedule_flip(tty); | |
1016 | } | |
1017 | /* Update rx_get */ | |
1018 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1019 | } |
1da177e4 LT |
1020 | } |
1021 | ||
f0eefdc3 | 1022 | static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1023 | { |
f0eefdc3 | 1024 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1025 | struct cyclades_card *cinfo = info->card; |
65f76a82 JS |
1026 | u8 data; |
1027 | unsigned int char_count; | |
1da177e4 | 1028 | #ifdef BLOCKMOVE |
02f1175c | 1029 | int small_count; |
1da177e4 | 1030 | #endif |
ad39c300 | 1031 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1032 | |
02f1175c JS |
1033 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1034 | return; | |
1da177e4 | 1035 | |
db05c3b1 JS |
1036 | tx_get = readl(&buf_ctrl->tx_get); |
1037 | tx_put = readl(&buf_ctrl->tx_put); | |
1038 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1039 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1040 | if (tx_put >= tx_get) |
1041 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1042 | else | |
1043 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1044 | |
02f1175c | 1045 | if (char_count) { |
1da177e4 | 1046 | |
f7429034 | 1047 | if (tty == NULL) |
02f1175c | 1048 | goto ztxdone; |
1da177e4 | 1049 | |
02f1175c JS |
1050 | if (info->x_char) { /* send special char */ |
1051 | data = info->x_char; | |
1da177e4 | 1052 | |
02f1175c JS |
1053 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1054 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1055 | info->x_char = 0; | |
1056 | char_count--; | |
1057 | info->icount.tx++; | |
02f1175c | 1058 | } |
1da177e4 | 1059 | #ifdef BLOCKMOVE |
02f1175c JS |
1060 | while (0 < (small_count = min_t(unsigned int, |
1061 | tx_bufsize - tx_put, min_t(unsigned int, | |
1062 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1063 | min_t(unsigned int, info->xmit_cnt, | |
1064 | char_count))))) { | |
1065 | ||
1066 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1067 | tx_put), | |
77451e53 | 1068 | &info->port.xmit_buf[info->xmit_tail], |
02f1175c JS |
1069 | small_count); |
1070 | ||
1071 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1072 | char_count -= small_count; | |
1073 | info->icount.tx += small_count; | |
1074 | info->xmit_cnt -= small_count; | |
1075 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1076 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1077 | } |
1da177e4 | 1078 | #else |
02f1175c | 1079 | while (info->xmit_cnt && char_count) { |
77451e53 | 1080 | data = info->port.xmit_buf[info->xmit_tail]; |
02f1175c JS |
1081 | info->xmit_cnt--; |
1082 | info->xmit_tail = (info->xmit_tail + 1) & | |
1083 | (SERIAL_XMIT_SIZE - 1); | |
1084 | ||
1085 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1086 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1087 | char_count--; | |
1088 | info->icount.tx++; | |
02f1175c | 1089 | } |
1da177e4 | 1090 | #endif |
ebafeeff | 1091 | tty_wakeup(tty); |
7fa57a0c | 1092 | ztxdone: |
02f1175c JS |
1093 | /* Update tx_put */ |
1094 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1095 | } |
1da177e4 LT |
1096 | } |
1097 | ||
02f1175c | 1098 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1099 | { |
f0eefdc3 | 1100 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
1101 | struct tty_struct *tty; |
1102 | struct cyclades_port *info; | |
101b8159 | 1103 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1104 | __u8 cmd; |
02f1175c JS |
1105 | int special_count; |
1106 | int delta_count; | |
1107 | ||
db05c3b1 | 1108 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1109 | |
1110 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1111 | special_count = 0; | |
1112 | delta_count = 0; | |
dd025c0c | 1113 | info = &cinfo->ports[channel]; |
d13549f8 | 1114 | tty = tty_port_tty_get(&info->port); |
15ed6cc0 | 1115 | if (tty == NULL) |
02f1175c | 1116 | continue; |
f7429034 | 1117 | |
02f1175c JS |
1118 | switch (cmd) { |
1119 | case C_CM_PR_ERROR: | |
1120 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1121 | info->icount.rx++; | |
1122 | special_count++; | |
1123 | break; | |
1124 | case C_CM_FR_ERROR: | |
1125 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1126 | info->icount.rx++; | |
1127 | special_count++; | |
1128 | break; | |
1129 | case C_CM_RXBRK: | |
1130 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1131 | info->icount.rx++; | |
1132 | special_count++; | |
1133 | break; | |
1134 | case C_CM_MDCD: | |
1135 | info->icount.dcd++; | |
1136 | delta_count++; | |
77451e53 | 1137 | if (info->port.flags & ASYNC_CHECK_CD) { |
f0eefdc3 JS |
1138 | u32 dcd = fw_ver > 241 ? param : |
1139 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1140 | if (dcd & C_RS_DCD) |
77451e53 | 1141 | wake_up_interruptible(&info->port.open_wait); |
174e6fe0 | 1142 | else |
d13549f8 | 1143 | tty_hangup(tty); |
02f1175c JS |
1144 | } |
1145 | break; | |
1146 | case C_CM_MCTS: | |
1147 | info->icount.cts++; | |
1148 | delta_count++; | |
1149 | break; | |
1150 | case C_CM_MRI: | |
1151 | info->icount.rng++; | |
1152 | delta_count++; | |
1153 | break; | |
1154 | case C_CM_MDSR: | |
1155 | info->icount.dsr++; | |
1156 | delta_count++; | |
1157 | break; | |
1da177e4 | 1158 | #ifdef Z_WAKE |
02f1175c | 1159 | case C_CM_IOCTLW: |
ebafeeff | 1160 | complete(&info->shutdown_wait); |
02f1175c | 1161 | break; |
1da177e4 LT |
1162 | #endif |
1163 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1164 | case C_CM_RXHIWM: |
1165 | case C_CM_RXNNDT: | |
1166 | case C_CM_INTBACK2: | |
1167 | /* Reception Interrupt */ | |
1da177e4 | 1168 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1169 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1170 | "port %ld\n", info->card, channel); | |
1da177e4 | 1171 | #endif |
f0eefdc3 | 1172 | cyz_handle_rx(info, tty); |
02f1175c JS |
1173 | break; |
1174 | case C_CM_TXBEMPTY: | |
1175 | case C_CM_TXLOWWM: | |
1176 | case C_CM_INTBACK: | |
1177 | /* Transmission Interrupt */ | |
1da177e4 | 1178 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1179 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1180 | "port %ld\n", info->card, channel); | |
1da177e4 | 1181 | #endif |
f0eefdc3 | 1182 | cyz_handle_tx(info, tty); |
02f1175c JS |
1183 | break; |
1184 | #endif /* CONFIG_CYZ_INTR */ | |
1185 | case C_CM_FATAL: | |
1186 | /* should do something with this !!! */ | |
1187 | break; | |
1188 | default: | |
1189 | break; | |
1190 | } | |
1191 | if (delta_count) | |
bdc04e31 | 1192 | wake_up_interruptible(&info->port.delta_msr_wait); |
02f1175c JS |
1193 | if (special_count) |
1194 | tty_schedule_flip(tty); | |
d13549f8 | 1195 | tty_kref_put(tty); |
1da177e4 | 1196 | } |
1da177e4 LT |
1197 | } |
1198 | ||
1199 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1200 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1201 | { |
f7429034 | 1202 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1203 | |
2693f485 | 1204 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1205 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1206 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1207 | "(IRQ%d).\n", irq); | |
1da177e4 | 1208 | #endif |
02f1175c JS |
1209 | return IRQ_NONE; |
1210 | } | |
1da177e4 | 1211 | |
02f1175c JS |
1212 | /* Handle the interrupts */ |
1213 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1214 | |
02f1175c JS |
1215 | return IRQ_HANDLED; |
1216 | } /* cyz_interrupt */ | |
1da177e4 | 1217 | |
02f1175c | 1218 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1219 | { |
02f1175c | 1220 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1221 | struct cyclades_card *card = info->card; |
02f1175c | 1222 | int retval; |
875b206b | 1223 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1224 | unsigned long flags; |
1225 | ||
9fa1b3b1 | 1226 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1227 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1228 | if (retval != 0) { |
21719191 | 1229 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1230 | info->line, retval); |
1231 | } | |
9fa1b3b1 | 1232 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1233 | } |
1234 | ||
02f1175c | 1235 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1236 | |
02f1175c | 1237 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1238 | { |
02f1175c JS |
1239 | struct cyclades_card *cinfo; |
1240 | struct cyclades_port *info; | |
b7050906 | 1241 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1242 | unsigned int port, card; |
1da177e4 | 1243 | |
02f1175c JS |
1244 | for (card = 0; card < NR_CARDS; card++) { |
1245 | cinfo = &cy_card[card]; | |
1246 | ||
2693f485 | 1247 | if (!cy_is_Z(cinfo)) |
02f1175c | 1248 | continue; |
2693f485 | 1249 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1250 | continue; |
1251 | ||
1da177e4 | 1252 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1253 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1254 | cinfo->intr_enabled = 1; |
1255 | continue; | |
1256 | } | |
1da177e4 | 1257 | |
02f1175c | 1258 | cyz_handle_cmd(cinfo); |
1da177e4 | 1259 | |
02f1175c | 1260 | for (port = 0; port < cinfo->nports; port++) { |
d13549f8 JS |
1261 | struct tty_struct *tty; |
1262 | ||
dd025c0c | 1263 | info = &cinfo->ports[port]; |
d13549f8 JS |
1264 | tty = tty_port_tty_get(&info->port); |
1265 | /* OK to pass NULL to the handle functions below. | |
1266 | They need to drop the data in that case. */ | |
1267 | ||
02f1175c | 1268 | if (!info->throttle) |
f0eefdc3 JS |
1269 | cyz_handle_rx(info, tty); |
1270 | cyz_handle_tx(info, tty); | |
d13549f8 | 1271 | tty_kref_put(tty); |
02f1175c JS |
1272 | } |
1273 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1274 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1275 | } |
b7050906 | 1276 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1277 | } /* cyz_poll */ |
1da177e4 | 1278 | |
02f1175c | 1279 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1280 | |
1281 | /********** End of block of Cyclades-Z specific code *********/ | |
1282 | /***********************************************************/ | |
1283 | ||
1da177e4 LT |
1284 | /* This is called whenever a port becomes active; |
1285 | interrupts are enabled and DTR & RTS are turned on. | |
1286 | */ | |
d13549f8 | 1287 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1288 | { |
875b206b | 1289 | struct cyclades_card *card; |
02f1175c JS |
1290 | unsigned long flags; |
1291 | int retval = 0; | |
cc7fdf49 | 1292 | int channel; |
02f1175c | 1293 | unsigned long page; |
1da177e4 | 1294 | |
02f1175c | 1295 | card = info->card; |
875b206b | 1296 | channel = info->line - card->first_line; |
1da177e4 | 1297 | |
02f1175c JS |
1298 | page = get_zeroed_page(GFP_KERNEL); |
1299 | if (!page) | |
1300 | return -ENOMEM; | |
1da177e4 | 1301 | |
9fa1b3b1 | 1302 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1303 | |
cc7fdf49 | 1304 | if (info->port.flags & ASYNC_INITIALIZED) |
02f1175c | 1305 | goto errout; |
1da177e4 | 1306 | |
02f1175c | 1307 | if (!info->type) { |
d13549f8 | 1308 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1309 | goto errout; |
1310 | } | |
1da177e4 | 1311 | |
77451e53 | 1312 | if (info->port.xmit_buf) |
02f1175c JS |
1313 | free_page(page); |
1314 | else | |
77451e53 | 1315 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1316 | |
9fa1b3b1 | 1317 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1318 | |
d13549f8 | 1319 | cy_set_line_char(info, tty); |
1da177e4 | 1320 | |
2693f485 | 1321 | if (!cy_is_Z(card)) { |
02f1175c | 1322 | channel &= 0x03; |
1da177e4 | 1323 | |
9fa1b3b1 | 1324 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1325 | |
3aeea5b9 | 1326 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1327 | |
3aeea5b9 | 1328 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1329 | (info->default_timeout ? info->default_timeout : 0x02)); |
1330 | /* 10ms rx timeout */ | |
1da177e4 | 1331 | |
3aeea5b9 | 1332 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1333 | |
4d768200 | 1334 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1335 | |
3aeea5b9 | 1336 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1337 | } else { |
f0eefdc3 | 1338 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1339 | |
2693f485 | 1340 | if (!cyz_is_loaded(card)) |
02f1175c | 1341 | return -ENODEV; |
1da177e4 | 1342 | |
1da177e4 | 1343 | #ifdef CY_DEBUG_OPEN |
21719191 | 1344 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1345 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1346 | #endif |
9fa1b3b1 | 1347 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1348 | |
f0eefdc3 | 1349 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1350 | #ifdef Z_WAKE |
1351 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1352 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1353 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1354 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1355 | #else |
f0eefdc3 | 1356 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1357 | C_IN_IOCTLW | C_IN_MDCD); |
1358 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1359 | #else |
1360 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1361 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1362 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1363 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1364 | #else |
f0eefdc3 | 1365 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1366 | #endif /* CONFIG_CYZ_INTR */ |
1367 | #endif /* Z_WAKE */ | |
1368 | ||
875b206b | 1369 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1370 | if (retval != 0) { |
21719191 JS |
1371 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1372 | "%x\n", info->line, retval); | |
02f1175c | 1373 | } |
1da177e4 | 1374 | |
02f1175c | 1375 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1376 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1377 | if (retval != 0) { |
21719191 JS |
1378 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1379 | "%x\n", info->line, retval); | |
02f1175c | 1380 | } |
1da177e4 | 1381 | |
02f1175c JS |
1382 | /* set timeout !!! */ |
1383 | /* set RTS and DTR !!! */ | |
4d768200 | 1384 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1385 | |
02f1175c | 1386 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1387 | } |
02f1175c | 1388 | |
cc7fdf49 | 1389 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1390 | |
cc7fdf49 JS |
1391 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1392 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1393 | info->breakon = info->breakoff = 0; | |
1394 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1395 | info->idle_stats.in_use = | |
1396 | info->idle_stats.recv_idle = | |
1397 | info->idle_stats.xmit_idle = jiffies; | |
1398 | ||
1399 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1400 | |
1401 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1402 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1403 | #endif |
1404 | return 0; | |
1405 | ||
1406 | errout: | |
9fa1b3b1 | 1407 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1408 | free_page(page); |
1da177e4 | 1409 | return retval; |
02f1175c | 1410 | } /* startup */ |
1da177e4 | 1411 | |
02f1175c | 1412 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1413 | { |
3aeea5b9 | 1414 | struct cyclades_card *card = info->card; |
02f1175c | 1415 | unsigned long flags; |
3aeea5b9 | 1416 | int channel = info->line - card->first_line; |
1da177e4 | 1417 | |
2693f485 | 1418 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1419 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1420 | cyy_writeb(info, CyCAR, channel & 0x03); |
1421 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1422 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1423 | } else { |
1da177e4 | 1424 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1425 | int retval; |
1da177e4 | 1426 | |
9fa1b3b1 | 1427 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1428 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1429 | if (retval != 0) { |
21719191 JS |
1430 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1431 | "%x\n", info->line, retval); | |
02f1175c | 1432 | } |
9fa1b3b1 | 1433 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1434 | #else /* CONFIG_CYZ_INTR */ |
1435 | /* Don't have to do anything at this time */ | |
1436 | #endif /* CONFIG_CYZ_INTR */ | |
1437 | } | |
1438 | } /* start_xmit */ | |
1da177e4 LT |
1439 | |
1440 | /* | |
1441 | * This routine shuts down a serial port; interrupts are disabled, | |
1442 | * and DTR is dropped if the hangup on close termio flag is on. | |
1443 | */ | |
d13549f8 | 1444 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1445 | { |
875b206b | 1446 | struct cyclades_card *card; |
02f1175c | 1447 | unsigned long flags; |
3aeea5b9 | 1448 | int channel; |
02f1175c | 1449 | |
77451e53 | 1450 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 1451 | return; |
02f1175c JS |
1452 | |
1453 | card = info->card; | |
875b206b | 1454 | channel = info->line - card->first_line; |
2693f485 | 1455 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1456 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1457 | |
1458 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
bdc04e31 | 1459 | wake_up_interruptible(&info->port.delta_msr_wait); |
1da177e4 | 1460 | |
77451e53 | 1461 | if (info->port.xmit_buf) { |
02f1175c | 1462 | unsigned char *temp; |
77451e53 AC |
1463 | temp = info->port.xmit_buf; |
1464 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1465 | free_page((unsigned long)temp); |
1466 | } | |
4d768200 JS |
1467 | if (tty->termios->c_cflag & HUPCL) |
1468 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); | |
1469 | ||
3aeea5b9 | 1470 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1471 | /* it may be appropriate to clear _XMIT at |
1472 | some later date (after testing)!!! */ | |
1473 | ||
d13549f8 | 1474 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1475 | info->port.flags &= ~ASYNC_INITIALIZED; |
9fa1b3b1 | 1476 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1477 | } else { |
1da177e4 | 1478 | #ifdef CY_DEBUG_OPEN |
21719191 | 1479 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1480 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1481 | #endif |
1482 | ||
2693f485 | 1483 | if (!cyz_is_loaded(card)) |
02f1175c | 1484 | return; |
1da177e4 | 1485 | |
9fa1b3b1 | 1486 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1487 | |
77451e53 | 1488 | if (info->port.xmit_buf) { |
02f1175c | 1489 | unsigned char *temp; |
77451e53 AC |
1490 | temp = info->port.xmit_buf; |
1491 | info->port.xmit_buf = NULL; | |
02f1175c | 1492 | free_page((unsigned long)temp); |
1da177e4 | 1493 | } |
02f1175c | 1494 | |
4d768200 JS |
1495 | if (tty->termios->c_cflag & HUPCL) |
1496 | tty_port_lower_dtr_rts(&info->port); | |
1da177e4 | 1497 | |
d13549f8 | 1498 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1499 | info->port.flags &= ~ASYNC_INITIALIZED; |
02f1175c | 1500 | |
9fa1b3b1 | 1501 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1502 | } |
1da177e4 LT |
1503 | |
1504 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1505 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1506 | #endif |
02f1175c | 1507 | } /* shutdown */ |
1da177e4 LT |
1508 | |
1509 | /* | |
1510 | * ------------------------------------------------------------ | |
1511 | * cy_open() and friends | |
1512 | * ------------------------------------------------------------ | |
1513 | */ | |
1514 | ||
1da177e4 LT |
1515 | /* |
1516 | * This routine is called whenever a serial port is opened. It | |
1517 | * performs the serial-specific initialization for the tty structure. | |
1518 | */ | |
02f1175c | 1519 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1520 | { |
02f1175c | 1521 | struct cyclades_port *info; |
65f76a82 JS |
1522 | unsigned int i, line; |
1523 | int retval; | |
1da177e4 | 1524 | |
02f1175c | 1525 | line = tty->index; |
15ed6cc0 | 1526 | if (tty->index < 0 || NR_PORTS <= line) |
02f1175c | 1527 | return -ENODEV; |
15ed6cc0 | 1528 | |
dd025c0c JS |
1529 | for (i = 0; i < NR_CARDS; i++) |
1530 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1531 | line >= cy_card[i].first_line) | |
1532 | break; | |
1533 | if (i >= NR_CARDS) | |
1534 | return -ENODEV; | |
1535 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1536 | if (info->line < 0) |
02f1175c | 1537 | return -ENODEV; |
1da177e4 | 1538 | |
02f1175c JS |
1539 | /* If the card's firmware hasn't been loaded, |
1540 | treat it as absent from the system. This | |
1541 | will make the user pay attention. | |
1542 | */ | |
2693f485 | 1543 | if (cy_is_Z(info->card)) { |
875b206b | 1544 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1545 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1546 | ||
2693f485 JS |
1547 | if (!cyz_is_loaded(cinfo)) { |
1548 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1549 | readl(&firm_id->signature) == |
1550 | ZFIRM_HLT) { | |
21719191 JS |
1551 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1552 | "need an external power supply for " | |
1553 | "this number of ports.\nFirmware " | |
1554 | "halted.\n"); | |
02f1175c | 1555 | } else { |
21719191 JS |
1556 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1557 | "yet loaded\n"); | |
02f1175c JS |
1558 | } |
1559 | return -ENODEV; | |
1560 | } | |
1561 | #ifdef CONFIG_CYZ_INTR | |
1562 | else { | |
1563 | /* In case this Z board is operating in interrupt mode, its | |
1564 | interrupts should be enabled as soon as the first open | |
1565 | happens to one of its ports. */ | |
1566 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1567 | u16 intr; |
02f1175c | 1568 | |
02f1175c | 1569 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1570 | intr = readw(&cinfo->ctl_addr.p9060-> |
1571 | intr_ctrl_stat) | 0x0900; | |
1572 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1573 | intr_ctrl_stat, intr); | |
02f1175c JS |
1574 | /* Enable interrupts on the FW */ |
1575 | retval = cyz_issue_cmd(cinfo, 0, | |
1576 | C_CM_IRQ_ENBL, 0L); | |
1577 | if (retval != 0) { | |
21719191 JS |
1578 | printk(KERN_ERR "cyc:IRQ enable retval " |
1579 | "was %x\n", retval); | |
02f1175c | 1580 | } |
02f1175c JS |
1581 | cinfo->intr_enabled = 1; |
1582 | } | |
1da177e4 | 1583 | } |
02f1175c JS |
1584 | #endif /* CONFIG_CYZ_INTR */ |
1585 | /* Make sure this Z port really exists in hardware */ | |
1586 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1587 | return -ENODEV; | |
1da177e4 | 1588 | } |
1da177e4 | 1589 | #ifdef CY_DEBUG_OTHER |
21719191 | 1590 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1591 | #endif |
02f1175c | 1592 | tty->driver_data = info; |
15ed6cc0 | 1593 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1594 | return -ENODEV; |
15ed6cc0 | 1595 | |
1da177e4 | 1596 | #ifdef CY_DEBUG_OPEN |
21719191 | 1597 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1598 | info->port.count); |
1da177e4 | 1599 | #endif |
77451e53 | 1600 | info->port.count++; |
1da177e4 | 1601 | #ifdef CY_DEBUG_COUNT |
21719191 | 1602 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1603 | current->pid, info->port.count); |
1da177e4 | 1604 | #endif |
1da177e4 | 1605 | |
02f1175c JS |
1606 | /* |
1607 | * If the port is the middle of closing, bail out now | |
1608 | */ | |
77451e53 AC |
1609 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
1610 | wait_event_interruptible(info->port.close_wait, | |
1611 | !(info->port.flags & ASYNC_CLOSING)); | |
1612 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
02f1175c | 1613 | } |
1da177e4 | 1614 | |
02f1175c JS |
1615 | /* |
1616 | * Start up serial port | |
1617 | */ | |
d13549f8 | 1618 | retval = cy_startup(info, tty); |
15ed6cc0 | 1619 | if (retval) |
02f1175c | 1620 | return retval; |
1da177e4 | 1621 | |
f0737579 | 1622 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1623 | if (retval) { |
1da177e4 | 1624 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1625 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1626 | "with %d\n", retval); | |
1da177e4 | 1627 | #endif |
02f1175c JS |
1628 | return retval; |
1629 | } | |
1da177e4 | 1630 | |
02f1175c | 1631 | info->throttle = 0; |
d13549f8 | 1632 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1633 | |
02f1175c | 1634 | #ifdef CY_DEBUG_OPEN |
21719191 | 1635 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1636 | #endif |
1637 | return 0; | |
1638 | } /* cy_open */ | |
1da177e4 LT |
1639 | |
1640 | /* | |
1641 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1642 | */ | |
02f1175c | 1643 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1644 | { |
875b206b | 1645 | struct cyclades_card *card; |
cab9bdd1 | 1646 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1647 | unsigned long orig_jiffies; |
1648 | int char_time; | |
1649 | ||
1650 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1651 | return; | |
1652 | ||
1653 | if (info->xmit_fifo_size == 0) | |
1654 | return; /* Just in case.... */ | |
1da177e4 | 1655 | |
02f1175c | 1656 | orig_jiffies = jiffies; |
978e595f | 1657 | lock_kernel(); |
02f1175c JS |
1658 | /* |
1659 | * Set the check interval to be 1/5 of the estimated time to | |
1660 | * send a single character, and make it at least 1. The check | |
1661 | * interval should also be less than the timeout. | |
1662 | * | |
1663 | * Note: we have to use pretty tight timings here to satisfy | |
1664 | * the NIST-PCTS. | |
1665 | */ | |
1666 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1667 | char_time = char_time / 5; | |
1668 | if (char_time <= 0) | |
1669 | char_time = 1; | |
1670 | if (timeout < 0) | |
1671 | timeout = 0; | |
1672 | if (timeout) | |
1673 | char_time = min(char_time, timeout); | |
1674 | /* | |
1675 | * If the transmitter hasn't cleared in twice the approximate | |
1676 | * amount of time to send the entire FIFO, it probably won't | |
1677 | * ever clear. This assumes the UART isn't doing flow | |
1678 | * control, which is currently the case. Hence, if it ever | |
1679 | * takes longer than info->timeout, this is probably due to a | |
1680 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1681 | * 2*info->timeout. | |
1682 | */ | |
1683 | if (!timeout || timeout > 2 * info->timeout) | |
1684 | timeout = 2 * info->timeout; | |
1da177e4 | 1685 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
1686 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
1687 | timeout, char_time, jiffies); | |
1da177e4 | 1688 | #endif |
02f1175c | 1689 | card = info->card; |
2693f485 | 1690 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1691 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
1da177e4 | 1692 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1693 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 1694 | #endif |
02f1175c JS |
1695 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1696 | break; | |
1697 | if (timeout && time_after(jiffies, orig_jiffies + | |
1698 | timeout)) | |
1699 | break; | |
1700 | } | |
1da177e4 | 1701 | } |
02f1175c JS |
1702 | /* Run one more char cycle */ |
1703 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
978e595f | 1704 | unlock_kernel(); |
1da177e4 | 1705 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1706 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
1707 | #endif |
1708 | } | |
1709 | ||
978e595f AC |
1710 | static void cy_flush_buffer(struct tty_struct *tty) |
1711 | { | |
1712 | struct cyclades_port *info = tty->driver_data; | |
1713 | struct cyclades_card *card; | |
1714 | int channel, retval; | |
1715 | unsigned long flags; | |
1716 | ||
1717 | #ifdef CY_DEBUG_IO | |
1718 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1719 | #endif | |
1720 | ||
1721 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1722 | return; | |
1723 | ||
1724 | card = info->card; | |
1725 | channel = info->line - card->first_line; | |
1726 | ||
1727 | spin_lock_irqsave(&card->card_lock, flags); | |
1728 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1729 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1730 | ||
2693f485 | 1731 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1732 | buffers as well */ |
1733 | spin_lock_irqsave(&card->card_lock, flags); | |
1734 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1735 | if (retval != 0) { | |
1736 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1737 | "was %x\n", info->line, retval); | |
1738 | } | |
1739 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1740 | } | |
1741 | tty_wakeup(tty); | |
1742 | } /* cy_flush_buffer */ | |
1743 | ||
1744 | ||
e936ffd5 | 1745 | static void cy_do_close(struct tty_port *port) |
1da177e4 | 1746 | { |
e936ffd5 AC |
1747 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
1748 | port); | |
9fa1b3b1 | 1749 | struct cyclades_card *card; |
02f1175c | 1750 | unsigned long flags; |
3aeea5b9 | 1751 | int channel; |
1da177e4 | 1752 | |
9fa1b3b1 | 1753 | card = info->card; |
3aeea5b9 | 1754 | channel = info->line - card->first_line; |
9fa1b3b1 | 1755 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1756 | |
2693f485 | 1757 | if (!cy_is_Z(card)) { |
02f1175c | 1758 | /* Stop accepting input */ |
3aeea5b9 JS |
1759 | cyy_writeb(info, CyCAR, channel & 0x03); |
1760 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
77451e53 | 1761 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
1762 | /* Waiting for on-board buffers to be empty before |
1763 | closing the port */ | |
9fa1b3b1 | 1764 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 | 1765 | cy_wait_until_sent(port->tty, info->timeout); |
9fa1b3b1 | 1766 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1767 | } |
1768 | } else { | |
1769 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1770 | /* Waiting for on-board buffers to be empty before closing |
1771 | the port */ | |
f0eefdc3 | 1772 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1773 | int retval; |
1774 | ||
f0eefdc3 | 1775 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1776 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1777 | if (retval != 0) { |
21719191 JS |
1778 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1779 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1780 | } |
9fa1b3b1 | 1781 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1782 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1783 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1784 | } |
1da177e4 | 1785 | #endif |
02f1175c | 1786 | } |
9fa1b3b1 | 1787 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 AC |
1788 | cy_shutdown(info, port->tty); |
1789 | } | |
1da177e4 | 1790 | |
e936ffd5 AC |
1791 | /* |
1792 | * This routine is called when a particular tty device is closed. | |
1793 | */ | |
1794 | static void cy_close(struct tty_struct *tty, struct file *filp) | |
1795 | { | |
1796 | struct cyclades_port *info = tty->driver_data; | |
1797 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) | |
1798 | return; | |
1799 | tty_port_close(&info->port, tty, filp); | |
02f1175c | 1800 | } /* cy_close */ |
1da177e4 LT |
1801 | |
1802 | /* This routine gets called when tty_write has put something into | |
1803 | * the write_queue. The characters may come from user space or | |
1804 | * kernel space. | |
1805 | * | |
1806 | * This routine will return the number of characters actually | |
1807 | * accepted for writing. | |
1808 | * | |
1809 | * If the port is not already transmitting stuff, start it off by | |
1810 | * enabling interrupts. The interrupt service routine will then | |
1811 | * ensure that the characters are sent. | |
1812 | * If the port is already active, there is no need to kick it. | |
1813 | * | |
1814 | */ | |
02f1175c | 1815 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1816 | { |
cab9bdd1 | 1817 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1818 | unsigned long flags; |
1819 | int c, ret = 0; | |
1da177e4 LT |
1820 | |
1821 | #ifdef CY_DEBUG_IO | |
21719191 | 1822 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1823 | #endif |
1824 | ||
15ed6cc0 | 1825 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1826 | return 0; |
1da177e4 | 1827 | |
77451e53 | 1828 | if (!info->port.xmit_buf) |
02f1175c | 1829 | return 0; |
1da177e4 | 1830 | |
9fa1b3b1 | 1831 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1832 | while (1) { |
1a4e2351 HH |
1833 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1834 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1835 | |
1836 | if (c <= 0) | |
1837 | break; | |
1838 | ||
77451e53 | 1839 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1840 | info->xmit_head = (info->xmit_head + c) & |
1841 | (SERIAL_XMIT_SIZE - 1); | |
1842 | info->xmit_cnt += c; | |
1843 | buf += c; | |
1844 | count -= c; | |
1845 | ret += c; | |
1846 | } | |
9fa1b3b1 | 1847 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1848 | |
1849 | info->idle_stats.xmit_bytes += ret; | |
1850 | info->idle_stats.xmit_idle = jiffies; | |
1851 | ||
15ed6cc0 | 1852 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1853 | start_xmit(info); |
15ed6cc0 | 1854 | |
02f1175c JS |
1855 | return ret; |
1856 | } /* cy_write */ | |
1da177e4 LT |
1857 | |
1858 | /* | |
1859 | * This routine is called by the kernel to write a single | |
1860 | * character to the tty device. If the kernel uses this routine, | |
1861 | * it must call the flush_chars() routine (if defined) when it is | |
1862 | * done stuffing characters into the driver. If there is no room | |
1863 | * in the queue, the character is ignored. | |
1864 | */ | |
76b25a55 | 1865 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1866 | { |
cab9bdd1 | 1867 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1868 | unsigned long flags; |
1da177e4 LT |
1869 | |
1870 | #ifdef CY_DEBUG_IO | |
21719191 | 1871 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1872 | #endif |
1873 | ||
02f1175c | 1874 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1875 | return 0; |
1da177e4 | 1876 | |
77451e53 | 1877 | if (!info->port.xmit_buf) |
76b25a55 | 1878 | return 0; |
1da177e4 | 1879 | |
9fa1b3b1 | 1880 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1881 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1882 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1883 | return 0; |
02f1175c | 1884 | } |
1da177e4 | 1885 | |
77451e53 | 1886 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1887 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1888 | info->xmit_cnt++; | |
1da177e4 LT |
1889 | info->idle_stats.xmit_bytes++; |
1890 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1891 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1892 | return 1; |
02f1175c | 1893 | } /* cy_put_char */ |
1da177e4 LT |
1894 | |
1895 | /* | |
1896 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1897 | * series of characters to the tty device using put_char(). |
1da177e4 | 1898 | */ |
02f1175c | 1899 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1900 | { |
cab9bdd1 | 1901 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1902 | |
1da177e4 | 1903 | #ifdef CY_DEBUG_IO |
21719191 | 1904 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1905 | #endif |
1906 | ||
02f1175c JS |
1907 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1908 | return; | |
1da177e4 | 1909 | |
02f1175c | 1910 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1911 | !info->port.xmit_buf) |
02f1175c | 1912 | return; |
1da177e4 | 1913 | |
02f1175c JS |
1914 | start_xmit(info); |
1915 | } /* cy_flush_chars */ | |
1da177e4 LT |
1916 | |
1917 | /* | |
1918 | * This routine returns the numbers of characters the tty driver | |
1919 | * will accept for queuing to be written. This number is subject | |
1920 | * to change as output buffers get emptied, or if the output flow | |
1921 | * control is activated. | |
1922 | */ | |
02f1175c | 1923 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1924 | { |
cab9bdd1 | 1925 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1926 | int ret; |
1927 | ||
1da177e4 | 1928 | #ifdef CY_DEBUG_IO |
21719191 | 1929 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1930 | #endif |
1931 | ||
02f1175c JS |
1932 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1933 | return 0; | |
1934 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1935 | if (ret < 0) | |
1936 | ret = 0; | |
1937 | return ret; | |
1938 | } /* cy_write_room */ | |
1da177e4 | 1939 | |
02f1175c | 1940 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1941 | { |
cab9bdd1 | 1942 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1943 | |
02f1175c JS |
1944 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1945 | return 0; | |
1946 | ||
1da177e4 | 1947 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1948 | if (!cy_is_Z(info->card)) { |
02f1175c | 1949 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1950 | #ifdef CY_DEBUG_IO |
21719191 JS |
1951 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1952 | info->line, info->xmit_cnt); | |
1da177e4 | 1953 | #endif |
02f1175c | 1954 | return info->xmit_cnt; |
1da177e4 | 1955 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1956 | } else { |
f0eefdc3 | 1957 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1958 | int char_count; |
ad39c300 | 1959 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1960 | |
978e595f | 1961 | lock_kernel(); |
db05c3b1 JS |
1962 | tx_get = readl(&buf_ctrl->tx_get); |
1963 | tx_put = readl(&buf_ctrl->tx_put); | |
1964 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1965 | if (tx_put >= tx_get) |
1966 | char_count = tx_put - tx_get; | |
1967 | else | |
1968 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1969 | #ifdef CY_DEBUG_IO |
21719191 JS |
1970 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1971 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1972 | #endif |
978e595f | 1973 | unlock_kernel(); |
096dcfce | 1974 | return info->xmit_cnt + char_count; |
02f1175c JS |
1975 | } |
1976 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1977 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1978 | |
1979 | /* | |
1980 | * ------------------------------------------------------------ | |
1981 | * cy_ioctl() and friends | |
1982 | * ------------------------------------------------------------ | |
1983 | */ | |
1984 | ||
1a86b5e3 | 1985 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1986 | { |
02f1175c | 1987 | int co, co_val, bpr; |
1a86b5e3 | 1988 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 1989 | 25000000); |
1da177e4 | 1990 | |
02f1175c JS |
1991 | if (baud == 0) { |
1992 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
1993 | return; | |
1994 | } | |
1da177e4 | 1995 | |
02f1175c JS |
1996 | /* determine which prescaler to use */ |
1997 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
1998 | if (cy_clock / co_val / baud > 63) | |
1999 | break; | |
2000 | } | |
1da177e4 | 2001 | |
02f1175c JS |
2002 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
2003 | if (bpr > 255) | |
2004 | bpr = 255; | |
1da177e4 | 2005 | |
02f1175c JS |
2006 | info->tbpr = info->rbpr = bpr; |
2007 | info->tco = info->rco = co; | |
1da177e4 LT |
2008 | } |
2009 | ||
2010 | /* | |
2011 | * This routine finds or computes the various line characteristics. | |
2012 | * It used to be called config_setup | |
2013 | */ | |
d13549f8 | 2014 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 2015 | { |
875b206b | 2016 | struct cyclades_card *card; |
02f1175c | 2017 | unsigned long flags; |
3aeea5b9 | 2018 | int channel; |
02f1175c | 2019 | unsigned cflag, iflag; |
02f1175c JS |
2020 | int baud, baud_rate = 0; |
2021 | int i; | |
2022 | ||
d13549f8 | 2023 | if (!tty->termios) /* XXX can this happen at all? */ |
02f1175c | 2024 | return; |
15ed6cc0 AC |
2025 | |
2026 | if (info->line == -1) | |
02f1175c | 2027 | return; |
15ed6cc0 | 2028 | |
d13549f8 JS |
2029 | cflag = tty->termios->c_cflag; |
2030 | iflag = tty->termios->c_iflag; | |
1da177e4 | 2031 | |
02f1175c JS |
2032 | /* |
2033 | * Set up the tty->alt_speed kludge | |
2034 | */ | |
d13549f8 JS |
2035 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
2036 | tty->alt_speed = 57600; | |
2037 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2038 | tty->alt_speed = 115200; | |
2039 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2040 | tty->alt_speed = 230400; | |
2041 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2042 | tty->alt_speed = 460800; | |
02f1175c JS |
2043 | |
2044 | card = info->card; | |
875b206b | 2045 | channel = info->line - card->first_line; |
02f1175c | 2046 | |
2693f485 | 2047 | if (!cy_is_Z(card)) { |
46fb7825 JS |
2048 | u32 cflags; |
2049 | ||
02f1175c | 2050 | /* baud rate */ |
d13549f8 | 2051 | baud = tty_get_baud_rate(tty); |
77451e53 | 2052 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2053 | ASYNC_SPD_CUST) { |
2054 | if (info->custom_divisor) | |
2055 | baud_rate = info->baud / info->custom_divisor; | |
2056 | else | |
2057 | baud_rate = info->baud; | |
2058 | } else if (baud > CD1400_MAX_SPEED) { | |
2059 | baud = CD1400_MAX_SPEED; | |
2060 | } | |
2061 | /* find the baud index */ | |
2062 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2063 | if (baud == baud_table[i]) |
02f1175c | 2064 | break; |
02f1175c | 2065 | } |
15ed6cc0 | 2066 | if (i == 20) |
02f1175c | 2067 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2068 | |
77451e53 | 2069 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2070 | ASYNC_SPD_CUST) { |
2071 | cyy_baud_calc(info, baud_rate); | |
2072 | } else { | |
2073 | if (info->chip_rev >= CD1400_REV_J) { | |
2074 | /* It is a CD1400 rev. J or later */ | |
2075 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2076 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2077 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2078 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2079 | } else { | |
2080 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2081 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2082 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2083 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2084 | } | |
2085 | } | |
2086 | if (baud_table[i] == 134) { | |
2087 | /* get it right for 134.5 baud */ | |
2088 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2089 | 2; | |
77451e53 | 2090 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2091 | ASYNC_SPD_CUST) { |
2092 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2093 | baud_rate) + 2; | |
2094 | } else if (baud_table[i]) { | |
2095 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2096 | baud_table[i]) + 2; | |
2097 | /* this needs to be propagated into the card info */ | |
2098 | } else { | |
2099 | info->timeout = 0; | |
2100 | } | |
2101 | /* By tradition (is it a standard?) a baud rate of zero | |
2102 | implies the line should be/has been closed. A bit | |
2103 | later in this routine such a test is performed. */ | |
2104 | ||
2105 | /* byte size and parity */ | |
2106 | info->cor5 = 0; | |
2107 | info->cor4 = 0; | |
2108 | /* receive threshold */ | |
2109 | info->cor3 = (info->default_threshold ? | |
2110 | info->default_threshold : baud_cor3[i]); | |
2111 | info->cor2 = CyETC; | |
2112 | switch (cflag & CSIZE) { | |
2113 | case CS5: | |
2114 | info->cor1 = Cy_5_BITS; | |
2115 | break; | |
2116 | case CS6: | |
2117 | info->cor1 = Cy_6_BITS; | |
2118 | break; | |
2119 | case CS7: | |
2120 | info->cor1 = Cy_7_BITS; | |
2121 | break; | |
2122 | case CS8: | |
2123 | info->cor1 = Cy_8_BITS; | |
2124 | break; | |
2125 | } | |
15ed6cc0 | 2126 | if (cflag & CSTOPB) |
02f1175c | 2127 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2128 | |
02f1175c | 2129 | if (cflag & PARENB) { |
15ed6cc0 | 2130 | if (cflag & PARODD) |
02f1175c | 2131 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2132 | else |
02f1175c | 2133 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2134 | } else |
02f1175c | 2135 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2136 | |
2137 | /* CTS flow control flag */ | |
2138 | if (cflag & CRTSCTS) { | |
77451e53 | 2139 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
2140 | info->cor2 |= CyCtsAE; |
2141 | } else { | |
77451e53 | 2142 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2143 | info->cor2 &= ~CyCtsAE; |
2144 | } | |
2145 | if (cflag & CLOCAL) | |
77451e53 | 2146 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 2147 | else |
77451e53 | 2148 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2149 | |
2150 | /*********************************************** | |
2151 | The hardware option, CyRtsAO, presents RTS when | |
2152 | the chip has characters to send. Since most modems | |
2153 | use RTS as reverse (inbound) flow control, this | |
2154 | option is not used. If inbound flow control is | |
2155 | necessary, DTR can be programmed to provide the | |
2156 | appropriate signals for use with a non-standard | |
2157 | cable. Contact Marcio Saito for details. | |
2158 | ***********************************************/ | |
2159 | ||
02f1175c | 2160 | channel &= 0x03; |
1da177e4 | 2161 | |
9fa1b3b1 | 2162 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2163 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2164 | |
2165 | /* tx and rx baud rate */ | |
2166 | ||
3aeea5b9 JS |
2167 | cyy_writeb(info, CyTCOR, info->tco); |
2168 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2169 | cyy_writeb(info, CyRCOR, info->rco); | |
2170 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2171 | |
2172 | /* set line characteristics according configuration */ | |
2173 | ||
3aeea5b9 JS |
2174 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2175 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2176 | cyy_writeb(info, CyCOR1, info->cor1); | |
2177 | cyy_writeb(info, CyCOR2, info->cor2); | |
2178 | cyy_writeb(info, CyCOR3, info->cor3); | |
2179 | cyy_writeb(info, CyCOR4, info->cor4); | |
2180 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2181 | |
3aeea5b9 JS |
2182 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2183 | CyCOR3ch); | |
02f1175c | 2184 | |
15ed6cc0 | 2185 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2186 | cyy_writeb(info, CyCAR, channel); |
2187 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2188 | (info->default_timeout ? info->default_timeout : 0x02)); |
2189 | /* 10ms rx timeout */ | |
2190 | ||
46fb7825 JS |
2191 | cflags = CyCTS; |
2192 | if (!C_CLOCAL(tty)) | |
2193 | cflags |= CyDSR | CyRI | CyDCD; | |
2194 | /* without modem intr */ | |
2195 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2196 | /* act on 1->0 modem transitions */ | |
2197 | if ((cflag & CRTSCTS) && info->rflow) | |
2198 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2199 | else | |
2200 | cyy_writeb(info, CyMCOR1, cflags); | |
2201 | /* act on 0->1 modem transitions */ | |
2202 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2203 | |
4d768200 JS |
2204 | if (i == 0) /* baud rate is zero, turn off line */ |
2205 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2206 | else | |
2207 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2208 | |
d13549f8 | 2209 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2210 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2211 | |
1da177e4 | 2212 | } else { |
f0eefdc3 | 2213 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2214 | __u32 sw_flow; |
02f1175c | 2215 | int retval; |
1da177e4 | 2216 | |
2693f485 | 2217 | if (!cyz_is_loaded(card)) |
02f1175c | 2218 | return; |
1da177e4 | 2219 | |
02f1175c | 2220 | /* baud rate */ |
d13549f8 | 2221 | baud = tty_get_baud_rate(tty); |
77451e53 | 2222 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2223 | ASYNC_SPD_CUST) { |
2224 | if (info->custom_divisor) | |
2225 | baud_rate = info->baud / info->custom_divisor; | |
2226 | else | |
2227 | baud_rate = info->baud; | |
2228 | } else if (baud > CYZ_MAX_SPEED) { | |
2229 | baud = CYZ_MAX_SPEED; | |
2230 | } | |
2231 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2232 | ||
2233 | if (baud == 134) { | |
2234 | /* get it right for 134.5 baud */ | |
2235 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2236 | 2; | |
77451e53 | 2237 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2238 | ASYNC_SPD_CUST) { |
2239 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2240 | baud_rate) + 2; | |
2241 | } else if (baud) { | |
2242 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2243 | baud) + 2; | |
2244 | /* this needs to be propagated into the card info */ | |
2245 | } else { | |
2246 | info->timeout = 0; | |
2247 | } | |
1da177e4 | 2248 | |
02f1175c JS |
2249 | /* byte size and parity */ |
2250 | switch (cflag & CSIZE) { | |
2251 | case CS5: | |
2252 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2253 | break; | |
2254 | case CS6: | |
2255 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2256 | break; | |
2257 | case CS7: | |
2258 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2259 | break; | |
2260 | case CS8: | |
2261 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2262 | break; | |
2263 | } | |
2264 | if (cflag & CSTOPB) { | |
2265 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2266 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2267 | } else { |
2268 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2269 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2270 | } |
2271 | if (cflag & PARENB) { | |
15ed6cc0 | 2272 | if (cflag & PARODD) |
02f1175c | 2273 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2274 | else |
02f1175c | 2275 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2276 | } else |
02f1175c | 2277 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2278 | |
02f1175c JS |
2279 | /* CTS flow control flag */ |
2280 | if (cflag & CRTSCTS) { | |
2281 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2282 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2283 | } else { |
db05c3b1 JS |
2284 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2285 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2286 | } |
2287 | /* As the HW flow control is done in firmware, the driver | |
2288 | doesn't need to care about it */ | |
77451e53 | 2289 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2290 | |
2291 | /* XON/XOFF/XANY flow control flags */ | |
2292 | sw_flow = 0; | |
2293 | if (iflag & IXON) { | |
2294 | sw_flow |= C_FL_OXX; | |
2295 | if (iflag & IXANY) | |
2296 | sw_flow |= C_FL_OIXANY; | |
2297 | } | |
2298 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2299 | ||
875b206b | 2300 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2301 | if (retval != 0) { |
21719191 JS |
2302 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2303 | "was %x\n", info->line, retval); | |
02f1175c JS |
2304 | } |
2305 | ||
2306 | /* CD sensitivity */ | |
15ed6cc0 | 2307 | if (cflag & CLOCAL) |
77451e53 | 2308 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 2309 | else |
77451e53 | 2310 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 2311 | |
02f1175c JS |
2312 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2313 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2314 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2315 | #ifdef CY_DEBUG_DTR |
21719191 | 2316 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2317 | #endif |
02f1175c JS |
2318 | } else { |
2319 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2320 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2321 | #ifdef CY_DEBUG_DTR |
21719191 | 2322 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2323 | #endif |
02f1175c | 2324 | } |
1da177e4 | 2325 | |
15ed6cc0 | 2326 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2327 | if (retval != 0) { |
21719191 JS |
2328 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2329 | "was %x\n", info->line, retval); | |
02f1175c | 2330 | } |
1da177e4 | 2331 | |
d13549f8 | 2332 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2333 | } |
02f1175c | 2334 | } /* set_line_char */ |
1da177e4 | 2335 | |
6c28181c | 2336 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2337 | struct serial_struct __user *retinfo) |
1da177e4 | 2338 | { |
875b206b | 2339 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2340 | struct serial_struct tmp = { |
2341 | .type = info->type, | |
2342 | .line = info->line, | |
2343 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2344 | cinfo->first_line, | |
2345 | .irq = cinfo->irq, | |
2346 | .flags = info->port.flags, | |
2347 | .close_delay = info->port.close_delay, | |
2348 | .closing_wait = info->port.closing_wait, | |
2349 | .baud_base = info->baud, | |
2350 | .custom_divisor = info->custom_divisor, | |
2351 | .hub6 = 0, /*!!! */ | |
2352 | }; | |
02f1175c | 2353 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2354 | } |
1da177e4 LT |
2355 | |
2356 | static int | |
d13549f8 | 2357 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2358 | struct serial_struct __user *new_info) |
1da177e4 | 2359 | { |
02f1175c | 2360 | struct serial_struct new_serial; |
02f1175c JS |
2361 | |
2362 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2363 | return -EFAULT; | |
02f1175c JS |
2364 | |
2365 | if (!capable(CAP_SYS_ADMIN)) { | |
44b7d1b3 | 2366 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2367 | new_serial.baud_base != info->baud || |
2368 | (new_serial.flags & ASYNC_FLAGS & | |
2369 | ~ASYNC_USR_MASK) != | |
77451e53 | 2370 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
02f1175c | 2371 | return -EPERM; |
77451e53 | 2372 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2373 | (new_serial.flags & ASYNC_USR_MASK); |
2374 | info->baud = new_serial.baud_base; | |
2375 | info->custom_divisor = new_serial.custom_divisor; | |
2376 | goto check_and_exit; | |
2377 | } | |
2378 | ||
2379 | /* | |
2380 | * OK, past this point, all the error checking has been done. | |
2381 | * At this point, we start making changes..... | |
2382 | */ | |
2383 | ||
2384 | info->baud = new_serial.baud_base; | |
2385 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2386 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2387 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2388 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2389 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2390 | |
2391 | check_and_exit: | |
77451e53 | 2392 | if (info->port.flags & ASYNC_INITIALIZED) { |
d13549f8 | 2393 | cy_set_line_char(info, tty); |
02f1175c JS |
2394 | return 0; |
2395 | } else { | |
d13549f8 | 2396 | return cy_startup(info, tty); |
02f1175c JS |
2397 | } |
2398 | } /* set_serial_info */ | |
1da177e4 LT |
2399 | |
2400 | /* | |
2401 | * get_lsr_info - get line status register info | |
2402 | * | |
2403 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2404 | * is emptied. On bus types like RS485, the transmitter must | |
2405 | * release the bus after transmitting. This must be done when | |
2406 | * the transmit shift register is empty, not be done when the | |
2407 | * transmit holding register is empty. This functionality | |
2408 | * allows an RS485 driver to be written in user space. | |
2409 | */ | |
15ed6cc0 | 2410 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2411 | { |
3aeea5b9 | 2412 | struct cyclades_card *card = info->card; |
02f1175c JS |
2413 | unsigned int result; |
2414 | unsigned long flags; | |
3aeea5b9 | 2415 | u8 status; |
1da177e4 | 2416 | |
2693f485 | 2417 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2418 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2419 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2420 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2421 | result = (status ? 0 : TIOCSER_TEMT); |
2422 | } else { | |
2423 | /* Not supported yet */ | |
2424 | return -EINVAL; | |
2425 | } | |
2426 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
2427 | } |
2428 | ||
02f1175c | 2429 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 2430 | { |
cab9bdd1 | 2431 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2432 | struct cyclades_card *card; |
3aeea5b9 | 2433 | int result; |
02f1175c | 2434 | |
bf9d8929 | 2435 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2436 | return -ENODEV; |
1da177e4 | 2437 | |
02f1175c | 2438 | card = info->card; |
0d348729 JS |
2439 | |
2440 | lock_kernel(); | |
2693f485 | 2441 | if (!cy_is_Z(card)) { |
0d348729 | 2442 | unsigned long flags; |
3aeea5b9 JS |
2443 | int channel = info->line - card->first_line; |
2444 | u8 status; | |
1da177e4 | 2445 | |
9fa1b3b1 | 2446 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2447 | cyy_writeb(info, CyCAR, channel & 0x03); |
2448 | status = cyy_readb(info, CyMSVR1); | |
2449 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2450 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2451 | |
2452 | if (info->rtsdtr_inv) { | |
2453 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2454 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2455 | } else { | |
2456 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2457 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2458 | } | |
2459 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2460 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2461 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2462 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2463 | } else { |
0d348729 JS |
2464 | u32 lstatus; |
2465 | ||
2466 | if (!cyz_is_loaded(card)) { | |
2467 | result = -ENODEV; | |
2468 | goto end; | |
02f1175c | 2469 | } |
1da177e4 | 2470 | |
0d348729 JS |
2471 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2472 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2473 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2474 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2475 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2476 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2477 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2478 | } |
0d348729 | 2479 | end: |
7b130c0e | 2480 | unlock_kernel(); |
02f1175c JS |
2481 | return result; |
2482 | } /* cy_tiomget */ | |
1da177e4 LT |
2483 | |
2484 | static int | |
2485 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 2486 | unsigned int set, unsigned int clear) |
1da177e4 | 2487 | { |
cab9bdd1 | 2488 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2489 | struct cyclades_card *card; |
02f1175c | 2490 | unsigned long flags; |
02f1175c | 2491 | |
bf9d8929 | 2492 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2493 | return -ENODEV; |
2494 | ||
2495 | card = info->card; | |
2693f485 | 2496 | if (!cy_is_Z(card)) { |
4d768200 JS |
2497 | spin_lock_irqsave(&card->card_lock, flags); |
2498 | cyy_change_rts_dtr(info, set, clear); | |
2499 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2500 | } else { |
0d348729 JS |
2501 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2502 | int retval, channel = info->line - card->first_line; | |
2503 | u32 rs; | |
2504 | ||
2505 | if (!cyz_is_loaded(card)) | |
2506 | return -ENODEV; | |
2507 | ||
2508 | spin_lock_irqsave(&card->card_lock, flags); | |
2509 | rs = readl(&ch_ctrl->rs_control); | |
2510 | if (set & TIOCM_RTS) | |
2511 | rs |= C_RS_RTS; | |
2512 | if (clear & TIOCM_RTS) | |
2513 | rs &= ~C_RS_RTS; | |
2514 | if (set & TIOCM_DTR) { | |
2515 | rs |= C_RS_DTR; | |
1da177e4 | 2516 | #ifdef CY_DEBUG_DTR |
0d348729 | 2517 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2518 | #endif |
0d348729 JS |
2519 | } |
2520 | if (clear & TIOCM_DTR) { | |
2521 | rs &= ~C_RS_DTR; | |
1da177e4 | 2522 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2523 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2524 | "Z DTR\n"); | |
1da177e4 | 2525 | #endif |
02f1175c | 2526 | } |
0d348729 | 2527 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2528 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2529 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2530 | if (retval != 0) { |
21719191 JS |
2531 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2532 | "was %x\n", info->line, retval); | |
02f1175c | 2533 | } |
1da177e4 | 2534 | } |
02f1175c | 2535 | return 0; |
0d348729 | 2536 | } |
1da177e4 LT |
2537 | |
2538 | /* | |
2539 | * cy_break() --- routine which turns the break handling on or off | |
2540 | */ | |
9e98966c | 2541 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2542 | { |
cab9bdd1 | 2543 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2544 | struct cyclades_card *card; |
02f1175c | 2545 | unsigned long flags; |
9e98966c | 2546 | int retval = 0; |
1da177e4 | 2547 | |
02f1175c | 2548 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2549 | return -EINVAL; |
1da177e4 | 2550 | |
9fa1b3b1 JS |
2551 | card = info->card; |
2552 | ||
2553 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2554 | if (!cy_is_Z(card)) { |
02f1175c JS |
2555 | /* Let the transmit ISR take care of this (since it |
2556 | requires stuffing characters into the output stream). | |
2557 | */ | |
2558 | if (break_state == -1) { | |
2559 | if (!info->breakon) { | |
2560 | info->breakon = 1; | |
2561 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2562 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2563 | start_xmit(info); |
9fa1b3b1 | 2564 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2565 | } |
2566 | } | |
2567 | } else { | |
2568 | if (!info->breakoff) { | |
2569 | info->breakoff = 1; | |
2570 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2571 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2572 | start_xmit(info); |
9fa1b3b1 | 2573 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2574 | } |
2575 | } | |
1da177e4 | 2576 | } |
1da177e4 | 2577 | } else { |
02f1175c | 2578 | if (break_state == -1) { |
9fa1b3b1 JS |
2579 | retval = cyz_issue_cmd(card, |
2580 | info->line - card->first_line, | |
02f1175c JS |
2581 | C_CM_SET_BREAK, 0L); |
2582 | if (retval != 0) { | |
21719191 JS |
2583 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2584 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2585 | } |
2586 | } else { | |
9fa1b3b1 JS |
2587 | retval = cyz_issue_cmd(card, |
2588 | info->line - card->first_line, | |
02f1175c JS |
2589 | C_CM_CLR_BREAK, 0L); |
2590 | if (retval != 0) { | |
21719191 JS |
2591 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2592 | "on ttyC%d was %x\n", info->line, | |
2593 | retval); | |
02f1175c | 2594 | } |
1da177e4 | 2595 | } |
1da177e4 | 2596 | } |
9fa1b3b1 | 2597 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2598 | return retval; |
02f1175c | 2599 | } /* cy_break */ |
1da177e4 | 2600 | |
02f1175c | 2601 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2602 | { |
3aeea5b9 | 2603 | struct cyclades_card *card = info->card; |
02f1175c | 2604 | unsigned long flags; |
1da177e4 | 2605 | |
2693f485 | 2606 | if (!cy_is_Z(card)) { |
02f1175c JS |
2607 | info->cor3 &= ~CyREC_FIFO; |
2608 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2609 | |
9fa1b3b1 | 2610 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2611 | cyy_writeb(info, CyCOR3, info->cor3); |
2612 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2613 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2614 | } |
2615 | return 0; | |
2616 | } /* set_threshold */ | |
1da177e4 | 2617 | |
15ed6cc0 AC |
2618 | static int get_threshold(struct cyclades_port *info, |
2619 | unsigned long __user *value) | |
1da177e4 | 2620 | { |
3aeea5b9 | 2621 | struct cyclades_card *card = info->card; |
1da177e4 | 2622 | |
2693f485 | 2623 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2624 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2625 | return put_user(tmp, value); |
02f1175c | 2626 | } |
f7429034 | 2627 | return 0; |
02f1175c | 2628 | } /* get_threshold */ |
1da177e4 | 2629 | |
02f1175c | 2630 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2631 | { |
3aeea5b9 | 2632 | struct cyclades_card *card = info->card; |
02f1175c | 2633 | unsigned long flags; |
1da177e4 | 2634 | |
2693f485 | 2635 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2636 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2637 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2638 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2639 | } |
2640 | return 0; | |
2641 | } /* set_timeout */ | |
1da177e4 | 2642 | |
15ed6cc0 AC |
2643 | static int get_timeout(struct cyclades_port *info, |
2644 | unsigned long __user *value) | |
1da177e4 | 2645 | { |
3aeea5b9 | 2646 | struct cyclades_card *card = info->card; |
1da177e4 | 2647 | |
2693f485 | 2648 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2649 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2650 | return put_user(tmp, value); |
02f1175c | 2651 | } |
f7429034 | 2652 | return 0; |
02f1175c | 2653 | } /* get_timeout */ |
1da177e4 | 2654 | |
6c28181c JS |
2655 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2656 | struct cyclades_icount *cprev) | |
1da177e4 | 2657 | { |
6c28181c JS |
2658 | struct cyclades_icount cnow; |
2659 | unsigned long flags; | |
2660 | int ret; | |
1da177e4 | 2661 | |
6c28181c JS |
2662 | spin_lock_irqsave(&info->card->card_lock, flags); |
2663 | cnow = info->icount; /* atomic copy */ | |
2664 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2665 | ||
2666 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2667 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2668 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2669 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2670 | ||
2671 | *cprev = cnow; | |
2672 | ||
2673 | return ret; | |
2674 | } | |
1da177e4 LT |
2675 | |
2676 | /* | |
2677 | * This routine allows the tty driver to implement device- | |
2678 | * specific ioctl's. If the ioctl number passed in cmd is | |
2679 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2680 | */ | |
2681 | static int | |
02f1175c JS |
2682 | cy_ioctl(struct tty_struct *tty, struct file *file, |
2683 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 2684 | { |
cab9bdd1 | 2685 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2686 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2687 | int ret_val = 0; |
2688 | unsigned long flags; | |
2689 | void __user *argp = (void __user *)arg; | |
2690 | ||
2691 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2692 | return -ENODEV; | |
1da177e4 LT |
2693 | |
2694 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2695 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2696 | info->line, cmd, arg); | |
1da177e4 | 2697 | #endif |
7b130c0e | 2698 | lock_kernel(); |
1da177e4 | 2699 | |
02f1175c JS |
2700 | switch (cmd) { |
2701 | case CYGETMON: | |
6c28181c JS |
2702 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2703 | ret_val = -EFAULT; | |
2704 | break; | |
2705 | } | |
2706 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2707 | break; |
2708 | case CYGETTHRESH: | |
2709 | ret_val = get_threshold(info, argp); | |
2710 | break; | |
2711 | case CYSETTHRESH: | |
2712 | ret_val = set_threshold(info, arg); | |
2713 | break; | |
2714 | case CYGETDEFTHRESH: | |
6c28181c JS |
2715 | ret_val = put_user(info->default_threshold, |
2716 | (unsigned long __user *)argp); | |
02f1175c JS |
2717 | break; |
2718 | case CYSETDEFTHRESH: | |
6c28181c | 2719 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2720 | break; |
2721 | case CYGETTIMEOUT: | |
2722 | ret_val = get_timeout(info, argp); | |
2723 | break; | |
2724 | case CYSETTIMEOUT: | |
2725 | ret_val = set_timeout(info, arg); | |
2726 | break; | |
2727 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2728 | ret_val = put_user(info->default_timeout, |
2729 | (unsigned long __user *)argp); | |
02f1175c JS |
2730 | break; |
2731 | case CYSETDEFTIMEOUT: | |
6c28181c | 2732 | info->default_timeout = arg & 0xff; |
02f1175c | 2733 | break; |
1da177e4 | 2734 | case CYSETRFLOW: |
02f1175c | 2735 | info->rflow = (int)arg; |
02f1175c | 2736 | break; |
1da177e4 | 2737 | case CYGETRFLOW: |
02f1175c JS |
2738 | ret_val = info->rflow; |
2739 | break; | |
1da177e4 | 2740 | case CYSETRTSDTR_INV: |
02f1175c | 2741 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2742 | break; |
1da177e4 | 2743 | case CYGETRTSDTR_INV: |
02f1175c JS |
2744 | ret_val = info->rtsdtr_inv; |
2745 | break; | |
1da177e4 | 2746 | case CYGETCD1400VER: |
02f1175c JS |
2747 | ret_val = info->chip_rev; |
2748 | break; | |
1da177e4 LT |
2749 | #ifndef CONFIG_CYZ_INTR |
2750 | case CYZSETPOLLCYCLE: | |
02f1175c | 2751 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2752 | break; |
1da177e4 | 2753 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2754 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2755 | break; | |
2756 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2757 | case CYSETWAIT: |
44b7d1b3 | 2758 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2759 | break; |
1da177e4 | 2760 | case CYGETWAIT: |
44b7d1b3 | 2761 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2762 | break; |
2763 | case TIOCGSERIAL: | |
6c28181c | 2764 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2765 | break; |
2766 | case TIOCSSERIAL: | |
d13549f8 | 2767 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2768 | break; |
2769 | case TIOCSERGETLSR: /* Get line status register */ | |
2770 | ret_val = get_lsr_info(info, argp); | |
2771 | break; | |
2772 | /* | |
2773 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2774 | * - mask passed in arg for lines of interest | |
2775 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2776 | * Caller should use TIOCGICOUNT to see which one it was | |
2777 | */ | |
1da177e4 | 2778 | case TIOCMIWAIT: |
9fa1b3b1 | 2779 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2780 | /* note the counters on entry */ |
2c7fea99 | 2781 | cnow = info->icount; |
9fa1b3b1 | 2782 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
bdc04e31 | 2783 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
6c28181c | 2784 | cy_cflags_changed(info, arg, &cnow)); |
2c7fea99 | 2785 | break; |
1da177e4 | 2786 | |
02f1175c JS |
2787 | /* |
2788 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2789 | * Return: write counters to the user passed counter struct | |
2790 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2791 | * RI where only 0->1 is counted. | |
2792 | */ | |
6c28181c JS |
2793 | case TIOCGICOUNT: { |
2794 | struct serial_icounter_struct sic = { }; | |
2795 | ||
9fa1b3b1 | 2796 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2797 | cnow = info->icount; |
9fa1b3b1 | 2798 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
6c28181c JS |
2799 | |
2800 | sic.cts = cnow.cts; | |
2801 | sic.dsr = cnow.dsr; | |
2802 | sic.rng = cnow.rng; | |
2803 | sic.dcd = cnow.dcd; | |
2804 | sic.rx = cnow.rx; | |
2805 | sic.tx = cnow.tx; | |
2806 | sic.frame = cnow.frame; | |
2807 | sic.overrun = cnow.overrun; | |
2808 | sic.parity = cnow.parity; | |
2809 | sic.brk = cnow.brk; | |
2810 | sic.buf_overrun = cnow.buf_overrun; | |
2811 | ||
2812 | if (copy_to_user(argp, &sic, sizeof(sic))) | |
2813 | ret_val = -EFAULT; | |
02f1175c | 2814 | break; |
6c28181c | 2815 | } |
02f1175c JS |
2816 | default: |
2817 | ret_val = -ENOIOCTLCMD; | |
2818 | } | |
7b130c0e | 2819 | unlock_kernel(); |
1da177e4 LT |
2820 | |
2821 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2822 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2823 | #endif |
02f1175c JS |
2824 | return ret_val; |
2825 | } /* cy_ioctl */ | |
1da177e4 LT |
2826 | |
2827 | /* | |
2828 | * This routine allows the tty driver to be notified when | |
2829 | * device's termios settings have changed. Note that a | |
2830 | * well-designed tty driver should be prepared to accept the case | |
2831 | * where old == NULL, and try to do something rational. | |
2832 | */ | |
02f1175c | 2833 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2834 | { |
cab9bdd1 | 2835 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2836 | |
2837 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2838 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2839 | #endif |
2840 | ||
d13549f8 | 2841 | cy_set_line_char(info, tty); |
02f1175c JS |
2842 | |
2843 | if ((old_termios->c_cflag & CRTSCTS) && | |
2844 | !(tty->termios->c_cflag & CRTSCTS)) { | |
2845 | tty->hw_stopped = 0; | |
2846 | cy_start(tty); | |
2847 | } | |
1da177e4 | 2848 | #if 0 |
02f1175c JS |
2849 | /* |
2850 | * No need to wake up processes in open wait, since they | |
2851 | * sample the CLOCAL flag once, and don't recheck it. | |
2852 | * XXX It's not clear whether the current behavior is correct | |
2853 | * or not. Hence, this may change..... | |
2854 | */ | |
2855 | if (!(old_termios->c_cflag & CLOCAL) && | |
2856 | (tty->termios->c_cflag & CLOCAL)) | |
77451e53 | 2857 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2858 | #endif |
02f1175c | 2859 | } /* cy_set_termios */ |
1da177e4 LT |
2860 | |
2861 | /* This function is used to send a high-priority XON/XOFF character to | |
2862 | the device. | |
2863 | */ | |
02f1175c | 2864 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2865 | { |
cab9bdd1 | 2866 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2867 | struct cyclades_card *card; |
2868 | int channel; | |
1da177e4 | 2869 | |
02f1175c | 2870 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2871 | return; |
2872 | ||
02f1175c | 2873 | info->x_char = ch; |
1da177e4 LT |
2874 | |
2875 | if (ch) | |
02f1175c | 2876 | cy_start(tty); |
1da177e4 LT |
2877 | |
2878 | card = info->card; | |
875b206b | 2879 | channel = info->line - card->first_line; |
1da177e4 | 2880 | |
2693f485 | 2881 | if (cy_is_Z(card)) { |
02f1175c | 2882 | if (ch == STOP_CHAR(tty)) |
875b206b | 2883 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2884 | else if (ch == START_CHAR(tty)) |
875b206b | 2885 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2886 | } |
2887 | } | |
2888 | ||
2889 | /* This routine is called by the upper-layer tty layer to signal | |
2890 | that incoming characters should be throttled because the input | |
2891 | buffers are close to full. | |
2892 | */ | |
02f1175c | 2893 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2894 | { |
cab9bdd1 | 2895 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2896 | struct cyclades_card *card; |
02f1175c | 2897 | unsigned long flags; |
1da177e4 LT |
2898 | |
2899 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 2900 | char buf[64]; |
1da177e4 | 2901 | |
21719191 | 2902 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 2903 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
2904 | #endif |
2905 | ||
15ed6cc0 | 2906 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2907 | return; |
02f1175c JS |
2908 | |
2909 | card = info->card; | |
2910 | ||
2911 | if (I_IXOFF(tty)) { | |
2693f485 | 2912 | if (!cy_is_Z(card)) |
02f1175c JS |
2913 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2914 | else | |
2915 | info->throttle = 1; | |
2916 | } | |
1da177e4 | 2917 | |
02f1175c | 2918 | if (tty->termios->c_cflag & CRTSCTS) { |
2693f485 | 2919 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2920 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2921 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2922 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2923 | } else { |
2924 | info->throttle = 1; | |
2925 | } | |
2926 | } | |
02f1175c | 2927 | } /* cy_throttle */ |
1da177e4 LT |
2928 | |
2929 | /* | |
2930 | * This routine notifies the tty driver that it should signal | |
2931 | * that characters can now be sent to the tty without fear of | |
2932 | * overrunning the input buffers of the line disciplines. | |
2933 | */ | |
02f1175c | 2934 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2935 | { |
cab9bdd1 | 2936 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2937 | struct cyclades_card *card; |
02f1175c | 2938 | unsigned long flags; |
1da177e4 LT |
2939 | |
2940 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
2941 | char buf[64]; |
2942 | ||
21719191 | 2943 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
15ed6cc0 | 2944 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
2945 | #endif |
2946 | ||
15ed6cc0 | 2947 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2948 | return; |
1da177e4 | 2949 | |
02f1175c JS |
2950 | if (I_IXOFF(tty)) { |
2951 | if (info->x_char) | |
2952 | info->x_char = 0; | |
2953 | else | |
2954 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2955 | } |
1da177e4 | 2956 | |
02f1175c JS |
2957 | if (tty->termios->c_cflag & CRTSCTS) { |
2958 | card = info->card; | |
2693f485 | 2959 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2960 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2961 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2962 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2963 | } else { |
2964 | info->throttle = 0; | |
2965 | } | |
2966 | } | |
02f1175c | 2967 | } /* cy_unthrottle */ |
1da177e4 LT |
2968 | |
2969 | /* cy_start and cy_stop provide software output flow control as a | |
2970 | function of XON/XOFF, software CTS, and other such stuff. | |
2971 | */ | |
02f1175c | 2972 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2973 | { |
02f1175c | 2974 | struct cyclades_card *cinfo; |
cab9bdd1 | 2975 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2976 | int channel; |
02f1175c | 2977 | unsigned long flags; |
1da177e4 LT |
2978 | |
2979 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2980 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2981 | #endif |
2982 | ||
02f1175c JS |
2983 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2984 | return; | |
1da177e4 | 2985 | |
875b206b | 2986 | cinfo = info->card; |
02f1175c | 2987 | channel = info->line - cinfo->first_line; |
2693f485 | 2988 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2989 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2990 | cyy_writeb(info, CyCAR, channel & 0x03); |
2991 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 2992 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2993 | } |
02f1175c | 2994 | } /* cy_stop */ |
1da177e4 | 2995 | |
02f1175c | 2996 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 2997 | { |
02f1175c | 2998 | struct cyclades_card *cinfo; |
cab9bdd1 | 2999 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 3000 | int channel; |
02f1175c | 3001 | unsigned long flags; |
1da177e4 LT |
3002 | |
3003 | #ifdef CY_DEBUG_OTHER | |
21719191 | 3004 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
3005 | #endif |
3006 | ||
02f1175c JS |
3007 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
3008 | return; | |
1da177e4 | 3009 | |
875b206b | 3010 | cinfo = info->card; |
02f1175c | 3011 | channel = info->line - cinfo->first_line; |
2693f485 | 3012 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 3013 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3014 | cyy_writeb(info, CyCAR, channel & 0x03); |
3015 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 3016 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 3017 | } |
02f1175c | 3018 | } /* cy_start */ |
1da177e4 | 3019 | |
1da177e4 LT |
3020 | /* |
3021 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
3022 | */ | |
02f1175c | 3023 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 3024 | { |
cab9bdd1 | 3025 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 3026 | |
1da177e4 | 3027 | #ifdef CY_DEBUG_OTHER |
21719191 | 3028 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
3029 | #endif |
3030 | ||
02f1175c JS |
3031 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
3032 | return; | |
1da177e4 | 3033 | |
02f1175c | 3034 | cy_flush_buffer(tty); |
d13549f8 | 3035 | cy_shutdown(info, tty); |
174e6fe0 | 3036 | tty_port_hangup(&info->port); |
02f1175c | 3037 | } /* cy_hangup */ |
1da177e4 | 3038 | |
f0737579 JS |
3039 | static int cyy_carrier_raised(struct tty_port *port) |
3040 | { | |
3041 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3042 | port); | |
3043 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
3044 | unsigned long flags; |
3045 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
3046 | u32 cd; |
3047 | ||
f0737579 | 3048 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3049 | cyy_writeb(info, CyCAR, channel & 0x03); |
3050 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
3051 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3052 | ||
3053 | return cd; | |
3054 | } | |
3055 | ||
3056 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
3057 | { | |
3058 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3059 | port); | |
3060 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 3061 | unsigned long flags; |
f0737579 JS |
3062 | |
3063 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3064 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3065 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3066 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3067 | } | |
3068 | ||
3069 | static int cyz_carrier_raised(struct tty_port *port) | |
3070 | { | |
3071 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3072 | port); | |
f0737579 | 3073 | |
f0eefdc3 | 3074 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3075 | } |
3076 | ||
3077 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3078 | { | |
3079 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3080 | port); | |
3081 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3082 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3083 | int ret, channel = info->line - cinfo->first_line; |
3084 | u32 rs; | |
3085 | ||
f0eefdc3 | 3086 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3087 | if (raise) |
3088 | rs |= C_RS_RTS | C_RS_DTR; | |
3089 | else | |
3090 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3091 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3092 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3093 | if (ret != 0) | |
3094 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3095 | __func__, info->line, ret); | |
3096 | #ifdef CY_DEBUG_DTR | |
3097 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3098 | #endif | |
3099 | } | |
3100 | ||
3101 | static const struct tty_port_operations cyy_port_ops = { | |
3102 | .carrier_raised = cyy_carrier_raised, | |
3103 | .dtr_rts = cyy_dtr_rts, | |
e936ffd5 | 3104 | .shutdown = cy_do_close, |
f0737579 JS |
3105 | }; |
3106 | ||
3107 | static const struct tty_port_operations cyz_port_ops = { | |
3108 | .carrier_raised = cyz_carrier_raised, | |
3109 | .dtr_rts = cyz_dtr_rts, | |
e936ffd5 | 3110 | .shutdown = cy_do_close, |
f0737579 JS |
3111 | }; |
3112 | ||
1da177e4 LT |
3113 | /* |
3114 | * --------------------------------------------------------------------- | |
3115 | * cy_init() and friends | |
3116 | * | |
3117 | * cy_init() is called at boot-time to initialize the serial driver. | |
3118 | * --------------------------------------------------------------------- | |
3119 | */ | |
3120 | ||
dd025c0c | 3121 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3122 | { |
3123 | struct cyclades_port *info; | |
f0eefdc3 | 3124 | unsigned int channel, port; |
0809e267 | 3125 | |
3046d50e | 3126 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3127 | cinfo->intr_enabled = 0; |
3046d50e | 3128 | |
963118ee JS |
3129 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3130 | GFP_KERNEL); | |
dd025c0c JS |
3131 | if (cinfo->ports == NULL) { |
3132 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3133 | return -ENOMEM; | |
3134 | } | |
3135 | ||
f0eefdc3 JS |
3136 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3137 | channel++, port++) { | |
3138 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3139 | tty_port_init(&info->port); |
3046d50e | 3140 | info->magic = CYCLADES_MAGIC; |
875b206b | 3141 | info->card = cinfo; |
3046d50e | 3142 | info->line = port; |
3046d50e | 3143 | |
44b7d1b3 AC |
3144 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3145 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 3146 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 3147 | init_completion(&info->shutdown_wait); |
3046d50e | 3148 | |
2693f485 | 3149 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3150 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3151 | struct ZFW_CTRL *zfw_ctrl; | |
3152 | ||
f0737579 | 3153 | info->port.ops = &cyz_port_ops; |
0809e267 | 3154 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3155 | |
3156 | zfw_ctrl = cinfo->base_addr + | |
3157 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3158 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3159 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3160 | ||
101b8159 | 3161 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3162 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3163 | else | |
3046d50e | 3164 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3165 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3166 | setup_timer(&cyz_rx_full_timer[port], |
3167 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3168 | #endif |
3046d50e | 3169 | } else { |
f0eefdc3 | 3170 | unsigned short chip_number; |
963118ee | 3171 | int index = cinfo->bus_index; |
f0eefdc3 | 3172 | |
f0737579 | 3173 | info->port.ops = &cyy_port_ops; |
0809e267 | 3174 | info->type = PORT_CIRRUS; |
0809e267 | 3175 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3176 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3177 | info->cor2 = CyETC; |
3178 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3179 | |
f0eefdc3 | 3180 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3181 | info->u.cyy.base_addr = cinfo->base_addr + |
3182 | (cy_chip_offset[chip_number] << index); | |
3183 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3184 | |
3185 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3186 | /* It is a CD1400 rev. J or later */ |
3187 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3188 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3189 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3190 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3191 | info->rtsdtr_inv = 1; |
3192 | } else { | |
3193 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3194 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3195 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3196 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3197 | info->rtsdtr_inv = 0; |
3198 | } | |
3046d50e JS |
3199 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3200 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3201 | } |
3046d50e | 3202 | |
0809e267 | 3203 | } |
3046d50e JS |
3204 | |
3205 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3206 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3207 | mod_timer(&cyz_timerlist, jiffies + 1); |
3208 | #ifdef CY_PCI_DEBUG | |
3209 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3210 | #endif | |
3211 | } | |
3212 | #endif | |
dd025c0c | 3213 | return 0; |
0809e267 JS |
3214 | } |
3215 | ||
1da177e4 LT |
3216 | /* initialize chips on Cyclom-Y card -- return number of valid |
3217 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
3218 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
3219 | int index) | |
1da177e4 | 3220 | { |
02f1175c JS |
3221 | unsigned int chip_number; |
3222 | void __iomem *base_addr; | |
3223 | ||
3224 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3225 | /* Cy_HwReset is 0x1400 */ | |
3226 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3227 | /* Cy_ClrIntr is 0x1800 */ | |
3228 | udelay(500L); | |
3229 | ||
15ed6cc0 AC |
3230 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3231 | chip_number++) { | |
02f1175c JS |
3232 | base_addr = |
3233 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3234 | mdelay(1); | |
db05c3b1 | 3235 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3236 | /************* |
3237 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3238 | chip_number, (unsigned long)base_addr); | |
3239 | *************/ | |
3240 | return chip_number; | |
3241 | } | |
3242 | ||
3243 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3244 | udelay(10L); | |
3245 | ||
3246 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3247 | cannot distinguish between references to chip 0 and a non- | |
3248 | existent chip 4. If the preceding clearing of the supposed | |
3249 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3250 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3251 | */ | |
db05c3b1 | 3252 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3253 | (cy_chip_offset[0] << index) + |
3254 | (CyGFRCR << index)) == 0) { | |
3255 | return chip_number; | |
3256 | } | |
3257 | ||
3258 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3259 | mdelay(1); | |
3260 | ||
db05c3b1 | 3261 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3262 | /* |
3263 | printk(" chip #%d at %#6lx is not responding ", | |
3264 | chip_number, (unsigned long)base_addr); | |
3265 | printk("(GFRCR stayed 0)\n", | |
3266 | */ | |
3267 | return chip_number; | |
3268 | } | |
db05c3b1 | 3269 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3270 | 0x40) { |
3271 | /* | |
3272 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3273 | "%#2x)\n", | |
3274 | chip_number, (unsigned long)base_addr, | |
3275 | base_addr[CyGFRCR<<index]); | |
3276 | */ | |
3277 | return chip_number; | |
3278 | } | |
3279 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3280 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3281 | /* It is a CD1400 rev. J or later */ |
3282 | /* Impossible to reach 5ms with this chip. | |
3283 | Changed to 2ms instead (f = 500 Hz). */ | |
3284 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3285 | } else { | |
3286 | /* f = 200 Hz */ | |
3287 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3288 | } | |
1da177e4 | 3289 | |
02f1175c JS |
3290 | /* |
3291 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3292 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3293 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3294 | */ |
3295 | } | |
3296 | return chip_number; | |
3297 | } /* cyy_init_card */ | |
1da177e4 LT |
3298 | |
3299 | /* | |
3300 | * --------------------------------------------------------------------- | |
3301 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3302 | * sets global variables and return the number of ISA boards found. | |
3303 | * --------------------------------------------------------------------- | |
3304 | */ | |
02f1175c | 3305 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3306 | { |
3307 | #ifdef CONFIG_ISA | |
02f1175c JS |
3308 | unsigned short cy_isa_irq, nboard; |
3309 | void __iomem *cy_isa_address; | |
3310 | unsigned short i, j, cy_isa_nchan; | |
02f1175c | 3311 | int isparam = 0; |
1da177e4 | 3312 | |
02f1175c | 3313 | nboard = 0; |
1da177e4 | 3314 | |
1da177e4 | 3315 | /* Check for module parameters */ |
02f1175c JS |
3316 | for (i = 0; i < NR_CARDS; i++) { |
3317 | if (maddr[i] || i) { | |
3318 | isparam = 1; | |
3319 | cy_isa_addresses[i] = maddr[i]; | |
3320 | } | |
3321 | if (!maddr[i]) | |
3322 | break; | |
1da177e4 | 3323 | } |
1da177e4 | 3324 | |
02f1175c JS |
3325 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3326 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3327 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3328 | if (isa_address == 0x0000) |
096dcfce | 3329 | return nboard; |
1da177e4 | 3330 | |
02f1175c | 3331 | /* probe for CD1400... */ |
cd989b3a | 3332 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3333 | if (cy_isa_address == NULL) { |
3334 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3335 | "address\n"); | |
3336 | continue; | |
3337 | } | |
02f1175c JS |
3338 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3339 | cyy_init_card(cy_isa_address, 0); | |
3340 | if (cy_isa_nchan == 0) { | |
3137553d | 3341 | iounmap(cy_isa_address); |
02f1175c JS |
3342 | continue; |
3343 | } | |
20904363 | 3344 | |
196b3167 | 3345 | if (isparam && i < NR_CARDS && irq[i]) |
02f1175c | 3346 | cy_isa_irq = irq[i]; |
1da177e4 | 3347 | else |
02f1175c JS |
3348 | /* find out the board's irq by probing */ |
3349 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3350 | if (cy_isa_irq == 0) { | |
21719191 JS |
3351 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3352 | "IRQ could not be detected.\n", | |
02f1175c | 3353 | (unsigned long)cy_isa_address); |
3137553d | 3354 | iounmap(cy_isa_address); |
02f1175c JS |
3355 | continue; |
3356 | } | |
3357 | ||
3358 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3359 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3360 | "more channels are available. Change NR_PORTS " | |
3361 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3362 | (unsigned long)cy_isa_address); |
3137553d | 3363 | iounmap(cy_isa_address); |
096dcfce | 3364 | return nboard; |
02f1175c JS |
3365 | } |
3366 | /* fill the next cy_card structure available */ | |
3367 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 3368 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
3369 | break; |
3370 | } | |
3371 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3372 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3373 | "more cards can be used. Change NR_CARDS in " | |
3374 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3375 | (unsigned long)cy_isa_address); |
3137553d | 3376 | iounmap(cy_isa_address); |
096dcfce | 3377 | return nboard; |
02f1175c JS |
3378 | } |
3379 | ||
3380 | /* allocate IRQ */ | |
3381 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
3382 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
3383 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3384 | "could not allocate IRQ#%d.\n", | |
3385 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3386 | iounmap(cy_isa_address); |
096dcfce | 3387 | return nboard; |
02f1175c JS |
3388 | } |
3389 | ||
3390 | /* set cy_card */ | |
3391 | cy_card[j].base_addr = cy_isa_address; | |
97e87f8e | 3392 | cy_card[j].ctl_addr.p9050 = NULL; |
02f1175c JS |
3393 | cy_card[j].irq = (int)cy_isa_irq; |
3394 | cy_card[j].bus_index = 0; | |
3395 | cy_card[j].first_line = cy_next_channel; | |
963118ee JS |
3396 | cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
3397 | cy_card[j].nports = cy_isa_nchan; | |
3137553d JS |
3398 | if (cy_init_card(&cy_card[j])) { |
3399 | cy_card[j].base_addr = NULL; | |
3400 | free_irq(cy_isa_irq, &cy_card[j]); | |
3401 | iounmap(cy_isa_address); | |
3402 | continue; | |
3403 | } | |
02f1175c JS |
3404 | nboard++; |
3405 | ||
21719191 JS |
3406 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3407 | "%d channels starting from port %d\n", | |
02f1175c JS |
3408 | j + 1, (unsigned long)cy_isa_address, |
3409 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3410 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3411 | ||
6ad1ccc1 JS |
3412 | for (j = cy_next_channel; |
3413 | j < cy_next_channel + cy_isa_nchan; j++) | |
3414 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
3415 | cy_next_channel += cy_isa_nchan; |
3416 | } | |
096dcfce | 3417 | return nboard; |
1da177e4 | 3418 | #else |
096dcfce | 3419 | return 0; |
02f1175c JS |
3420 | #endif /* CONFIG_ISA */ |
3421 | } /* cy_detect_isa */ | |
1da177e4 | 3422 | |
58936d8d | 3423 | #ifdef CONFIG_PCI |
054f5b0a JS |
3424 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
3425 | { | |
3426 | unsigned int a; | |
3427 | ||
3428 | for (a = 0; a < size && *str; a++, str++) | |
3429 | if (*str & 0x80) | |
3430 | return -EINVAL; | |
3431 | ||
3432 | for (; a < size; a++, str++) | |
3433 | if (*str) | |
3434 | return -EINVAL; | |
3435 | ||
3436 | return 0; | |
3437 | } | |
3438 | ||
f61e761e | 3439 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3440 | unsigned int size) |
3441 | { | |
3442 | for (; size > 0; size--) { | |
3443 | cy_writel(fpga, *data++); | |
3444 | udelay(10); | |
3445 | } | |
3446 | } | |
3447 | ||
3448 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
3449 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 3450 | { |
02f1175c | 3451 | /* Reset PLX */ |
054f5b0a | 3452 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3453 | udelay(100L); |
054f5b0a | 3454 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3455 | |
3456 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3457 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3458 | udelay(100L); |
054f5b0a JS |
3459 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3460 | ||
3461 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3462 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3463 | * registers. This will remain here until we find a permanent fix. | |
3464 | */ | |
3465 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3466 | } | |
3467 | ||
3468 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
3469 | const char *name, const u32 mailbox, void __iomem *base, | |
3470 | void __iomem *fpga) | |
3471 | { | |
f61e761e DW |
3472 | const void *ptr = fw->data; |
3473 | const struct zfile_header *h = ptr; | |
3474 | const struct zfile_config *c, *cs; | |
3475 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3476 | unsigned int a, tmp, len = fw->size; |
3477 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3478 | if (len < sizeof(*h)) { | |
3479 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3480 | return -EINVAL; | |
3481 | } | |
3482 | ||
3483 | cs = ptr + h->config_offset; | |
3484 | bs = ptr + h->block_offset; | |
3485 | ||
3486 | if ((void *)(cs + h->n_config) > ptr + len || | |
3487 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3488 | printk(BAD_FW "too short"); | |
3489 | return -EINVAL; | |
3490 | } | |
3491 | ||
3492 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3493 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3494 | printk(BAD_FW "bad formatted header string\n"); | |
3495 | return -EINVAL; | |
3496 | } | |
3497 | ||
3498 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3499 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3500 | return -EINVAL; | |
3501 | } | |
3502 | ||
3503 | tmp = 0; | |
3504 | for (c = cs; c < cs + h->n_config; c++) { | |
3505 | for (a = 0; a < c->n_blocks; a++) | |
3506 | if (c->block_list[a] > h->n_blocks) { | |
3507 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3508 | return -EINVAL; | |
3509 | } | |
3510 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3511 | tmp++; | |
3512 | } | |
3513 | if (!tmp) { | |
3514 | printk(BAD_FW "nothing appropriate\n"); | |
3515 | return -EINVAL; | |
3516 | } | |
3517 | ||
3518 | for (b = bs; b < bs + h->n_blocks; b++) | |
3519 | if (b->file_offset + b->size > len) { | |
3520 | printk(BAD_FW "bad block data offset\n"); | |
3521 | return -EINVAL; | |
3522 | } | |
3523 | ||
3524 | /* everything is OK, let's seek'n'load it */ | |
3525 | for (c = cs; c < cs + h->n_config; c++) | |
3526 | if (c->mailbox == mailbox && c->function == 0) | |
3527 | break; | |
3528 | ||
3529 | for (a = 0; a < c->n_blocks; a++) { | |
3530 | b = &bs[c->block_list[a]]; | |
3531 | if (b->type == ZBLOCK_FPGA) { | |
3532 | if (fpga != NULL) | |
3533 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3534 | b->size); | |
3535 | } else { | |
3536 | if (base != NULL) | |
3537 | memcpy_toio(base + b->ram_offset, | |
3538 | ptr + b->file_offset, b->size); | |
3539 | } | |
3540 | } | |
3541 | #undef BAD_FW | |
3542 | return 0; | |
3543 | } | |
3544 | ||
3545 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
3546 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
3547 | { | |
3548 | const struct firmware *fw; | |
3549 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3550 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3551 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3552 | void __iomem *tmp; |
963118ee | 3553 | u32 mailbox, status, nchan; |
054f5b0a JS |
3554 | unsigned int i; |
3555 | int retval; | |
3556 | ||
3557 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3558 | if (retval) { | |
3559 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3560 | goto err; | |
3561 | } | |
3562 | ||
3563 | /* Check whether the firmware is already loaded and running. If | |
3564 | positive, skip this board */ | |
2693f485 | 3565 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3566 | u32 cntval = readl(base_addr + 0x190); |
3567 | ||
3568 | udelay(100); | |
3569 | if (cntval != readl(base_addr + 0x190)) { | |
3570 | /* FW counter is working, FW is running */ | |
3571 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3572 | "Skipping board.\n"); | |
3573 | retval = 0; | |
3574 | goto err_rel; | |
3575 | } | |
3576 | } | |
3577 | ||
3578 | /* start boot */ | |
3579 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3580 | ~0x00030800UL); | |
3581 | ||
3582 | mailbox = readl(&ctl_addr->mail_box_0); | |
3583 | ||
2693f485 | 3584 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3585 | /* stops CPU and set window to beginning of RAM */ |
3586 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3587 | cy_writel(&cust->cpu_stop, 0); | |
3588 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3589 | udelay(100); | |
3590 | } | |
3591 | ||
3592 | plx_init(pdev, irq, ctl_addr); | |
3593 | ||
3594 | if (mailbox != 0) { | |
3595 | /* load FPGA */ | |
3596 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3597 | base_addr); | |
3598 | if (retval) | |
3599 | goto err_rel; | |
2693f485 | 3600 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3601 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3602 | "not loaded\n"); | |
3603 | goto err_rel; | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | /* stops CPU and set window to beginning of RAM */ | |
3608 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3609 | cy_writel(&cust->cpu_stop, 0); | |
3610 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3611 | udelay(100); | |
3612 | ||
3613 | /* clear memory */ | |
c4923b4f | 3614 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3615 | cy_writeb(tmp, 255); |
3616 | if (mailbox != 0) { | |
3617 | /* set window to last 512K of RAM */ | |
3618 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3619 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3620 | cy_writeb(tmp, 255); |
3621 | /* set window to beginning of RAM */ | |
3622 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3623 | } |
3624 | ||
3625 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3626 | release_firmware(fw); | |
3627 | if (retval) | |
3628 | goto err; | |
3629 | ||
3630 | /* finish boot and start boards */ | |
3631 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3632 | cy_writel(&cust->cpu_start, 0); | |
3633 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3634 | i = 0; | |
3635 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3636 | msleep(100); | |
3637 | if (status != ZFIRM_ID) { | |
3638 | if (status == ZFIRM_HLT) { | |
3639 | dev_err(&pdev->dev, "you need an external power supply " | |
3640 | "for this number of ports. Firmware halted and " | |
3641 | "board reset.\n"); | |
3642 | retval = -EIO; | |
3643 | goto err; | |
3644 | } | |
3645 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3646 | "some more time\n", status); | |
3647 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3648 | i++ < 200) | |
3649 | msleep(100); | |
3650 | if (status != ZFIRM_ID) { | |
3651 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3652 | "Giving up. (fid->signature = 0x%x)\n", | |
3653 | status); | |
3654 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3655 | "upgrading the FW, please power cycle the " | |
3656 | "system before loading the new FW to the " | |
3657 | "Cyclades-Z.\n"); | |
3658 | ||
2693f485 | 3659 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3660 | plx_init(pdev, irq, ctl_addr); |
3661 | ||
3662 | retval = -EIO; | |
3663 | goto err; | |
3664 | } | |
3665 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3666 | i / 10); | |
3667 | } | |
3668 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3669 | ||
3670 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3671 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3672 | base_addr + readl(&fid->zfwctrl_addr)); | |
3673 | ||
963118ee | 3674 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3675 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3676 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3677 | |
963118ee | 3678 | if (nchan == 0) { |
054f5b0a JS |
3679 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3680 | "check the connection between the Z host card and the " | |
3681 | "serial expanders.\n"); | |
3682 | ||
2693f485 | 3683 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3684 | plx_init(pdev, irq, ctl_addr); |
3685 | ||
3686 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3687 | "reset.\n"); | |
3688 | retval = 0; | |
3689 | goto err; | |
3690 | } | |
3691 | ||
3692 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3693 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3694 | ||
3695 | /* | |
3696 | Early firmware failed to start looking for commands. | |
3697 | This enables firmware interrupts for those commands. | |
3698 | */ | |
3699 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3700 | (1 << 17)); | |
3701 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3702 | 0x00030800UL); | |
3703 | ||
963118ee | 3704 | return nchan; |
054f5b0a JS |
3705 | err_rel: |
3706 | release_firmware(fw); | |
3707 | err: | |
3708 | return retval; | |
1da177e4 LT |
3709 | } |
3710 | ||
58936d8d JS |
3711 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
3712 | const struct pci_device_id *ent) | |
1da177e4 | 3713 | { |
3137553d JS |
3714 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3715 | char *card_name = NULL; | |
101b8159 | 3716 | u32 uninitialized_var(mailbox); |
3137553d JS |
3717 | unsigned int device_id, nchan = 0, card_no, i; |
3718 | unsigned char plx_ver; | |
3719 | int retval, irq; | |
02f1175c | 3720 | |
58936d8d JS |
3721 | retval = pci_enable_device(pdev); |
3722 | if (retval) { | |
3723 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3724 | goto err; |
58936d8d | 3725 | } |
1da177e4 | 3726 | |
58936d8d | 3727 | /* read PCI configuration area */ |
3137553d | 3728 | irq = pdev->irq; |
58936d8d | 3729 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3730 | |
3137553d JS |
3731 | #if defined(__alpha__) |
3732 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3733 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3734 | "addresses on Alpha systems.\n"); | |
3735 | retval = -EIO; | |
3736 | goto err_dis; | |
3737 | } | |
3738 | #endif | |
3739 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3740 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3741 | "addresses\n"); | |
3742 | retval = -EIO; | |
3743 | goto err_dis; | |
3744 | } | |
3745 | ||
3746 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3747 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3748 | "it...\n"); | |
3749 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3750 | } | |
3751 | ||
3752 | retval = pci_request_regions(pdev, "cyclades"); | |
3753 | if (retval) { | |
3754 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3755 | goto err_dis; | |
3756 | } | |
3757 | ||
3758 | retval = -EIO; | |
58936d8d JS |
3759 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3760 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3761 | card_name = "Cyclom-Y"; |
1da177e4 | 3762 | |
24e6fd4c JS |
3763 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3764 | CyPCI_Yctl); | |
3137553d JS |
3765 | if (addr0 == NULL) { |
3766 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3767 | goto err_reg; | |
58936d8d | 3768 | } |
24e6fd4c JS |
3769 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3770 | CyPCI_Ywin); | |
3137553d JS |
3771 | if (addr2 == NULL) { |
3772 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3773 | goto err_unmap; | |
58936d8d | 3774 | } |
1da177e4 | 3775 | |
3137553d JS |
3776 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3777 | if (nchan == 0) { | |
21719191 JS |
3778 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3779 | "Serial-Modules\n"); | |
c847d47c | 3780 | goto err_unmap; |
58936d8d | 3781 | } |
58936d8d | 3782 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3783 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3784 | |
24e6fd4c JS |
3785 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3786 | CyPCI_Zctl); | |
3137553d JS |
3787 | if (addr0 == NULL) { |
3788 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3789 | goto err_reg; | |
3790 | } | |
58936d8d JS |
3791 | |
3792 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3793 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3794 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3795 | |
054f5b0a | 3796 | plx_init(pdev, irq, addr0); |
02f1175c | 3797 | |
101b8159 | 3798 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3799 | |
24e6fd4c JS |
3800 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3801 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3802 | if (addr2 == NULL) { |
3803 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3804 | goto err_unmap; | |
58936d8d JS |
3805 | } |
3806 | ||
3807 | if (mailbox == ZE_V1) { | |
3137553d | 3808 | card_name = "Cyclades-Ze"; |
58936d8d | 3809 | } else { |
3137553d | 3810 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3811 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3812 | if (mailbox == ZO_V1) { |
3813 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3814 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3815 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3816 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3817 | fpga_id)), (ulong)(0xff & | |
3818 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3819 | fpga_version))); | |
3820 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3821 | } else { | |
3822 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3823 | "Cyclades-Z board. FPGA not loaded\n"); | |
3824 | } | |
1da177e4 | 3825 | #endif |
3137553d JS |
3826 | /* The following clears the firmware id word. This |
3827 | ensures that the driver will not attempt to talk to | |
3828 | the board until it has been properly initialized. | |
3829 | */ | |
3830 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3831 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3832 | } |
ace08c3c JS |
3833 | |
3834 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3835 | if (retval <= 0) |
ace08c3c | 3836 | goto err_unmap; |
963118ee | 3837 | nchan = retval; |
3137553d JS |
3838 | } |
3839 | ||
3840 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3841 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3842 | "channels are available. Change NR_PORTS in " | |
3843 | "cyclades.c and recompile kernel.\n"); | |
3844 | goto err_unmap; | |
3845 | } | |
3846 | /* fill the next cy_card structure available */ | |
3847 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
3848 | if (cy_card[card_no].base_addr == NULL) | |
3849 | break; | |
3850 | } | |
3851 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3852 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3853 | "more cards can be used. Change NR_CARDS in " | |
3854 | "cyclades.c and recompile kernel.\n"); | |
3855 | goto err_unmap; | |
3856 | } | |
3857 | ||
3858 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3859 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3860 | /* allocate IRQ */ | |
3861 | retval = request_irq(irq, cyy_interrupt, | |
3862 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); | |
3863 | if (retval) { | |
3864 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3865 | goto err_unmap; | |
58936d8d | 3866 | } |
963118ee | 3867 | cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3868 | } else { |
f0eefdc3 JS |
3869 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3870 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3871 | ||
3872 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3873 | ||
101b8159 JS |
3874 | cy_card[card_no].hw_ver = mailbox; |
3875 | cy_card[card_no].num_chips = (unsigned int)-1; | |
f0eefdc3 | 3876 | cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; |
02f1175c | 3877 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3878 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3879 | if (irq != 0 && irq != 255) { |
3880 | retval = request_irq(irq, cyz_interrupt, | |
58936d8d | 3881 | IRQF_SHARED, "Cyclades-Z", |
3137553d | 3882 | &cy_card[card_no]); |
58936d8d | 3883 | if (retval) { |
21719191 | 3884 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3885 | goto err_unmap; |
02f1175c | 3886 | } |
58936d8d | 3887 | } |
02f1175c | 3888 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3889 | } |
02f1175c | 3890 | |
3137553d JS |
3891 | /* set cy_card */ |
3892 | cy_card[card_no].base_addr = addr2; | |
97e87f8e | 3893 | cy_card[card_no].ctl_addr.p9050 = addr0; |
3137553d JS |
3894 | cy_card[card_no].irq = irq; |
3895 | cy_card[card_no].bus_index = 1; | |
3896 | cy_card[card_no].first_line = cy_next_channel; | |
963118ee | 3897 | cy_card[card_no].nports = nchan; |
3137553d JS |
3898 | retval = cy_init_card(&cy_card[card_no]); |
3899 | if (retval) | |
3900 | goto err_null; | |
58936d8d | 3901 | |
3137553d | 3902 | pci_set_drvdata(pdev, &cy_card[card_no]); |
58936d8d | 3903 | |
3137553d JS |
3904 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3905 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3906 | /* enable interrupts in the PCI interface */ | |
3907 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3908 | switch (plx_ver) { | |
3909 | case PLX_9050: | |
3137553d JS |
3910 | cy_writeb(addr0 + 0x4c, 0x43); |
3911 | break; | |
3912 | ||
3913 | case PLX_9060: | |
3914 | case PLX_9080: | |
3915 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3916 | { |
3917 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3918 | plx_init(pdev, irq, ctl_addr); | |
3919 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3920 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3921 | break; |
3922 | } | |
97e87f8e | 3923 | } |
58936d8d JS |
3924 | } |
3925 | ||
3137553d JS |
3926 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3927 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
3928 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
3929 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
3930 | cy_next_channel += nchan; | |
3931 | ||
58936d8d | 3932 | return 0; |
3137553d JS |
3933 | err_null: |
3934 | cy_card[card_no].base_addr = NULL; | |
3935 | free_irq(irq, &cy_card[card_no]); | |
3936 | err_unmap: | |
24e6fd4c | 3937 | iounmap(addr0); |
3137553d | 3938 | if (addr2) |
24e6fd4c | 3939 | iounmap(addr2); |
3137553d JS |
3940 | err_reg: |
3941 | pci_release_regions(pdev); | |
3942 | err_dis: | |
3943 | pci_disable_device(pdev); | |
3944 | err: | |
3945 | return retval; | |
58936d8d | 3946 | } |
58936d8d | 3947 | |
6747cd93 | 3948 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3949 | { |
38d09093 | 3950 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 3951 | unsigned int i; |
38d09093 | 3952 | |
85c93fa9 | 3953 | /* non-Z with old PLX */ |
2693f485 | 3954 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3955 | PLX_9050) |
97e87f8e | 3956 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3957 | else |
3958 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3959 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3960 | #endif |
97e87f8e JS |
3961 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3962 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3963 | ~0x0900); | |
85c93fa9 | 3964 | |
24e6fd4c | 3965 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3966 | if (cinfo->ctl_addr.p9050) |
3967 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3968 | if (cinfo->irq |
3969 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3970 | && !cy_is_Z(cinfo) |
38d09093 JS |
3971 | #endif /* CONFIG_CYZ_INTR */ |
3972 | ) | |
3973 | free_irq(cinfo->irq, cinfo); | |
3974 | pci_release_regions(pdev); | |
3975 | ||
3976 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
3977 | for (i = cinfo->first_line; i < cinfo->first_line + |
3978 | cinfo->nports; i++) | |
3979 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
3980 | cinfo->nports = 0; |
3981 | kfree(cinfo->ports); | |
38d09093 JS |
3982 | } |
3983 | ||
6747cd93 JS |
3984 | static struct pci_driver cy_pci_driver = { |
3985 | .name = "cyclades", | |
3986 | .id_table = cy_pci_dev_id, | |
3987 | .probe = cy_pci_probe, | |
3988 | .remove = __devexit_p(cy_pci_remove) | |
3989 | }; | |
3990 | #endif | |
3991 | ||
444697d6 | 3992 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 3993 | { |
02f1175c | 3994 | struct cyclades_port *info; |
dd025c0c | 3995 | unsigned int i, j; |
02f1175c JS |
3996 | __u32 cur_jifs = jiffies; |
3997 | ||
444697d6 | 3998 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
3999 | "IdleIn Overruns Ldisc\n"); |
4000 | ||
02f1175c | 4001 | /* Output one line for each known port */ |
dd025c0c JS |
4002 | for (i = 0; i < NR_CARDS; i++) |
4003 | for (j = 0; j < cy_card[i].nports; j++) { | |
4004 | info = &cy_card[i].ports[j]; | |
4005 | ||
d13549f8 JS |
4006 | if (info->port.count) { |
4007 | /* XXX is the ldisc num worth this? */ | |
4008 | struct tty_struct *tty; | |
4009 | struct tty_ldisc *ld; | |
4010 | int num = 0; | |
4011 | tty = tty_port_tty_get(&info->port); | |
4012 | if (tty) { | |
4013 | ld = tty_ldisc_ref(tty); | |
4014 | if (ld) { | |
4015 | num = ld->ops->num; | |
4016 | tty_ldisc_deref(ld); | |
4017 | } | |
4018 | tty_kref_put(tty); | |
4019 | } | |
444697d6 | 4020 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 4021 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
4022 | (cur_jifs - info->idle_stats.in_use) / |
4023 | HZ, info->idle_stats.xmit_bytes, | |
4024 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
4025 | HZ, info->idle_stats.recv_bytes, | |
4026 | (cur_jifs - info->idle_stats.recv_idle)/ | |
4027 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
4028 | num); |
4029 | } else | |
444697d6 | 4030 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
4031 | "%10lu %8lu %9lu %6ld\n", |
4032 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 4033 | } |
444697d6 AD |
4034 | return 0; |
4035 | } | |
4036 | ||
4037 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
4038 | { | |
4039 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
4040 | } |
4041 | ||
444697d6 AD |
4042 | static const struct file_operations cyclades_proc_fops = { |
4043 | .owner = THIS_MODULE, | |
4044 | .open = cyclades_proc_open, | |
4045 | .read = seq_read, | |
4046 | .llseek = seq_lseek, | |
4047 | .release = single_release, | |
4048 | }; | |
4049 | ||
1da177e4 LT |
4050 | /* The serial driver boot-time initialization code! |
4051 | Hardware I/O ports are mapped to character special devices on a | |
4052 | first found, first allocated manner. That is, this code searches | |
4053 | for Cyclom cards in the system. As each is found, it is probed | |
4054 | to discover how many chips (and thus how many ports) are present. | |
4055 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4056 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4057 | port mapping on a following card will shift. | |
4058 | ||
4059 | This approach is different from what is used in the other serial | |
4060 | device driver because the Cyclom is more properly a multiplexer, | |
4061 | not just an aggregation of serial ports on one card. | |
4062 | ||
4063 | If there are more cards with more ports than have been | |
4064 | statically allocated above, a warning is printed and the | |
4065 | extra ports are ignored. | |
4066 | */ | |
4067 | ||
b68e31d0 | 4068 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4069 | .open = cy_open, |
4070 | .close = cy_close, | |
4071 | .write = cy_write, | |
4072 | .put_char = cy_put_char, | |
4073 | .flush_chars = cy_flush_chars, | |
4074 | .write_room = cy_write_room, | |
4075 | .chars_in_buffer = cy_chars_in_buffer, | |
4076 | .flush_buffer = cy_flush_buffer, | |
4077 | .ioctl = cy_ioctl, | |
4078 | .throttle = cy_throttle, | |
4079 | .unthrottle = cy_unthrottle, | |
4080 | .set_termios = cy_set_termios, | |
4081 | .stop = cy_stop, | |
4082 | .start = cy_start, | |
4083 | .hangup = cy_hangup, | |
4084 | .break_ctl = cy_break, | |
4085 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4086 | .tiocmget = cy_tiocmget, |
4087 | .tiocmset = cy_tiocmset, | |
444697d6 | 4088 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4089 | }; |
4090 | ||
02f1175c | 4091 | static int __init cy_init(void) |
1da177e4 | 4092 | { |
dd025c0c | 4093 | unsigned int nboards; |
9dacf3b2 | 4094 | int retval = -ENOMEM; |
02f1175c JS |
4095 | |
4096 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4097 | if (!cy_serial_driver) | |
9dacf3b2 | 4098 | goto err; |
21719191 JS |
4099 | |
4100 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
4101 | __DATE__, __TIME__); | |
02f1175c JS |
4102 | |
4103 | /* Initialize the tty_driver structure */ | |
4104 | ||
4105 | cy_serial_driver->owner = THIS_MODULE; | |
4106 | cy_serial_driver->driver_name = "cyclades"; | |
4107 | cy_serial_driver->name = "ttyC"; | |
4108 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4109 | cy_serial_driver->minor_start = 0; | |
4110 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4111 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4112 | cy_serial_driver->init_termios = tty_std_termios; | |
4113 | cy_serial_driver->init_termios.c_cflag = | |
4114 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4115 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4116 | tty_set_operations(cy_serial_driver, &cy_ops); |
4117 | ||
9dacf3b2 JS |
4118 | retval = tty_register_driver(cy_serial_driver); |
4119 | if (retval) { | |
4120 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4121 | goto err_frtty; | |
4122 | } | |
02f1175c | 4123 | |
02f1175c JS |
4124 | /* the code below is responsible to find the boards. Each different |
4125 | type of board has its own detection routine. If a board is found, | |
4126 | the next cy_card structure available is set by the detection | |
4127 | routine. These functions are responsible for checking the | |
4128 | availability of cy_card and cy_port data structures and updating | |
4129 | the cy_next_channel. */ | |
4130 | ||
4131 | /* look for isa boards */ | |
14a55a67 | 4132 | nboards = cy_detect_isa(); |
02f1175c | 4133 | |
6747cd93 | 4134 | #ifdef CONFIG_PCI |
02f1175c | 4135 | /* look for pci boards */ |
6747cd93 | 4136 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4137 | if (retval && !nboards) { |
4138 | tty_unregister_driver(cy_serial_driver); | |
4139 | goto err_frtty; | |
4140 | } | |
6747cd93 | 4141 | #endif |
9dacf3b2 JS |
4142 | |
4143 | return 0; | |
9dacf3b2 JS |
4144 | err_frtty: |
4145 | put_tty_driver(cy_serial_driver); | |
4146 | err: | |
4147 | return retval; | |
02f1175c | 4148 | } /* cy_init */ |
1da177e4 | 4149 | |
02f1175c | 4150 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4151 | { |
dd025c0c | 4152 | struct cyclades_card *card; |
65f76a82 | 4153 | unsigned int i, e1; |
1da177e4 LT |
4154 | |
4155 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4156 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4157 | #endif /* CONFIG_CYZ_INTR */ |
4158 | ||
15ed6cc0 AC |
4159 | e1 = tty_unregister_driver(cy_serial_driver); |
4160 | if (e1) | |
21719191 JS |
4161 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4162 | "driver(%d)\n", e1); | |
1da177e4 | 4163 | |
6747cd93 JS |
4164 | #ifdef CONFIG_PCI |
4165 | pci_unregister_driver(&cy_pci_driver); | |
4166 | #endif | |
4167 | ||
02f1175c | 4168 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4169 | card = &cy_card[i]; |
4170 | if (card->base_addr) { | |
85c93fa9 | 4171 | /* clear interrupt */ |
dd025c0c JS |
4172 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4173 | iounmap(card->base_addr); | |
97e87f8e JS |
4174 | if (card->ctl_addr.p9050) |
4175 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4176 | if (card->irq |
1da177e4 | 4177 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4178 | && !cy_is_Z(card) |
1da177e4 | 4179 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4180 | ) |
dd025c0c | 4181 | free_irq(card->irq, card); |
65f76a82 | 4182 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4183 | card->nports; e1++) |
6ad1ccc1 | 4184 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4185 | kfree(card->ports); |
02f1175c JS |
4186 | } |
4187 | } | |
f2462bfe JS |
4188 | |
4189 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4190 | } /* cy_cleanup_module */ |
4191 | ||
4192 | module_init(cy_init); | |
4193 | module_exit(cy_cleanup_module); | |
4194 | ||
4195 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4196 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4197 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
e6c4ef98 | 4198 | MODULE_FIRMWARE("cyzfirm.bin"); |