Commit | Line | Data |
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1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
1da177e4 LT |
6 | * This file contains the driver for the Cyclades async multiport |
7 | * serial boards. | |
8 | * | |
9 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
10 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 11 | * |
ebdb5135 | 12 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
13 | * |
14 | * Much of the design and some of the code came from serial.c | |
15 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
16 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
17 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 18 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 19 | * |
1da177e4 LT |
20 | */ |
21 | ||
ebdb5135 | 22 | #define CY_VERSION "2.6" |
096dcfce | 23 | |
1da177e4 LT |
24 | /* If you need to install more boards than NR_CARDS, change the constant |
25 | in the definition below. No other change is necessary to support up to | |
26 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
27 | ||
02f1175c | 28 | #define NR_CARDS 4 |
1da177e4 LT |
29 | |
30 | /* | |
31 | If the total number of ports is larger than NR_PORTS, change this | |
32 | constant in the definition below. No other change is necessary to | |
33 | support more boards/ports. */ | |
34 | ||
02f1175c | 35 | #define NR_PORTS 256 |
1da177e4 | 36 | |
1da177e4 LT |
37 | #define ZO_V1 0 |
38 | #define ZO_V2 1 | |
39 | #define ZE_V1 2 | |
40 | ||
41 | #define SERIAL_PARANOIA_CHECK | |
42 | #undef CY_DEBUG_OPEN | |
43 | #undef CY_DEBUG_THROTTLE | |
44 | #undef CY_DEBUG_OTHER | |
45 | #undef CY_DEBUG_IO | |
46 | #undef CY_DEBUG_COUNT | |
47 | #undef CY_DEBUG_DTR | |
1da177e4 LT |
48 | #undef CY_DEBUG_INTERRUPTS |
49 | #undef CY_16Y_HACK | |
50 | #undef CY_ENABLE_MONITORING | |
51 | #undef CY_PCI_DEBUG | |
52 | ||
1da177e4 | 53 | /* |
15ed6cc0 | 54 | * Include section |
1da177e4 | 55 | */ |
1da177e4 LT |
56 | #include <linux/module.h> |
57 | #include <linux/errno.h> | |
58 | #include <linux/signal.h> | |
59 | #include <linux/sched.h> | |
60 | #include <linux/timer.h> | |
61 | #include <linux/interrupt.h> | |
62 | #include <linux/tty.h> | |
33f0f88f | 63 | #include <linux/tty_flip.h> |
1da177e4 LT |
64 | #include <linux/serial.h> |
65 | #include <linux/major.h> | |
66 | #include <linux/string.h> | |
67 | #include <linux/fcntl.h> | |
68 | #include <linux/ptrace.h> | |
69 | #include <linux/cyclades.h> | |
70 | #include <linux/mm.h> | |
71 | #include <linux/ioport.h> | |
72 | #include <linux/init.h> | |
73 | #include <linux/delay.h> | |
74 | #include <linux/spinlock.h> | |
75 | #include <linux/bitops.h> | |
054f5b0a | 76 | #include <linux/firmware.h> |
9f56fad7 | 77 | #include <linux/device.h> |
5a0e3ad6 | 78 | #include <linux/slab.h> |
1da177e4 | 79 | |
15ed6cc0 | 80 | #include <linux/io.h> |
15ed6cc0 | 81 | #include <linux/uaccess.h> |
1da177e4 | 82 | |
1da177e4 LT |
83 | #include <linux/kernel.h> |
84 | #include <linux/pci.h> | |
85 | ||
86 | #include <linux/stat.h> | |
87 | #include <linux/proc_fs.h> | |
444697d6 | 88 | #include <linux/seq_file.h> |
1da177e4 | 89 | |
02f1175c | 90 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
1da177e4 | 91 | |
1da177e4 LT |
92 | #ifndef SERIAL_XMIT_SIZE |
93 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
94 | #endif | |
1da177e4 LT |
95 | |
96 | #define STD_COM_FLAGS (0) | |
97 | ||
054f5b0a JS |
98 | /* firmware stuff */ |
99 | #define ZL_MAX_BLOCKS 16 | |
100 | #define DRIVER_VERSION 0x02010203 | |
101 | #define RAM_SIZE 0x80000 | |
102 | ||
054f5b0a JS |
103 | enum zblock_type { |
104 | ZBLOCK_PRG = 0, | |
105 | ZBLOCK_FPGA = 1 | |
106 | }; | |
107 | ||
108 | struct zfile_header { | |
109 | char name[64]; | |
110 | char date[32]; | |
111 | char aux[32]; | |
112 | u32 n_config; | |
113 | u32 config_offset; | |
114 | u32 n_blocks; | |
115 | u32 block_offset; | |
116 | u32 reserved[9]; | |
117 | } __attribute__ ((packed)); | |
118 | ||
119 | struct zfile_config { | |
120 | char name[64]; | |
121 | u32 mailbox; | |
122 | u32 function; | |
123 | u32 n_blocks; | |
124 | u32 block_list[ZL_MAX_BLOCKS]; | |
125 | } __attribute__ ((packed)); | |
126 | ||
127 | struct zfile_block { | |
128 | u32 type; | |
129 | u32 file_offset; | |
130 | u32 ram_offset; | |
131 | u32 size; | |
132 | } __attribute__ ((packed)); | |
133 | ||
1da177e4 LT |
134 | static struct tty_driver *cy_serial_driver; |
135 | ||
136 | #ifdef CONFIG_ISA | |
137 | /* This is the address lookup table. The driver will probe for | |
138 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
139 | driver to probe addresses at a different address, add it to | |
140 | this table. If the driver is probing some other board and | |
141 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
142 | */ |
143 | ||
144 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
145 | 0xD0000, |
146 | 0xD2000, | |
147 | 0xD4000, | |
148 | 0xD6000, | |
149 | 0xD8000, | |
150 | 0xDA000, | |
151 | 0xDC000, | |
152 | 0xDE000, | |
153 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 154 | }; |
02f1175c | 155 | |
fe971071 | 156 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 | 157 | |
3046d50e JS |
158 | static long maddr[NR_CARDS]; |
159 | static int irq[NR_CARDS]; | |
1da177e4 LT |
160 | |
161 | module_param_array(maddr, long, NULL, 0); | |
162 | module_param_array(irq, int, NULL, 0); | |
1da177e4 | 163 | |
02f1175c | 164 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
165 | |
166 | /* This is the per-card data structure containing address, irq, number of | |
167 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
168 | */ | |
169 | static struct cyclades_card cy_card[NR_CARDS]; | |
170 | ||
02f1175c | 171 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 172 | |
1da177e4 LT |
173 | /* |
174 | * This is used to look up the divisor speeds and the timeouts | |
175 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 176 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
177 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
178 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
179 | * HI VHI | |
180 | * 20 | |
181 | */ | |
ebdb5135 | 182 | static const int baud_table[] = { |
02f1175c JS |
183 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
184 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
185 | 230400, 0 | |
186 | }; | |
187 | ||
ebdb5135 | 188 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
189 | /* value => 00 01 02 03 04 */ |
190 | /* divide by 8 32 128 512 2048 */ | |
191 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
192 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
193 | }; | |
194 | ||
ebdb5135 | 195 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
196 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
197 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
198 | }; | |
199 | ||
ebdb5135 | 200 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
201 | /* value => 00 01 02 03 04 */ |
202 | /* divide by 8 32 128 512 2048 */ | |
203 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
204 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
205 | 0x00 | |
206 | }; | |
207 | ||
ebdb5135 | 208 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
209 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
210 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
211 | 0x21 | |
212 | }; | |
213 | ||
ebdb5135 | 214 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
215 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
216 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
217 | 0x07 | |
218 | }; | |
1da177e4 LT |
219 | |
220 | /* | |
221 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
222 | * The cyclades_port structure member rflow and the vector rflow_thr |
223 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
224 | * data loss even when the system interrupt latency is too high. These flags | |
225 | * are to be used only with very special applications. Setting these flags | |
226 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
227 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
228 | * cables. |
229 | */ | |
230 | ||
ebdb5135 | 231 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
232 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
233 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
234 | 0x0a | |
235 | }; | |
1da177e4 LT |
236 | |
237 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
238 | * address order. This look-up table overcomes that problem. | |
239 | */ | |
f0eefdc3 | 240 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
241 | 0x0400, |
242 | 0x0800, | |
243 | 0x0C00, | |
244 | 0x0200, | |
245 | 0x0600, | |
246 | 0x0A00, | |
247 | 0x0E00 | |
248 | }; | |
1da177e4 LT |
249 | |
250 | /* PCI related definitions */ | |
251 | ||
1da177e4 | 252 | #ifdef CONFIG_PCI |
ebdb5135 | 253 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
254 | /* PCI < 1Mb */ |
255 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
256 | /* PCI > 1Mb */ | |
257 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
258 | /* 4Y PCI < 1Mb */ | |
259 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
260 | /* 4Y PCI > 1Mb */ | |
261 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
262 | /* 8Y PCI < 1Mb */ | |
263 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
264 | /* 8Y PCI > 1Mb */ | |
265 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
266 | /* Z PCI < 1Mb */ | |
267 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
268 | /* Z PCI > 1Mb */ | |
269 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 270 | { } /* end of table */ |
02f1175c | 271 | }; |
893de2df | 272 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
273 | #endif |
274 | ||
275 | static void cy_start(struct tty_struct *); | |
d13549f8 | 276 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 277 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
278 | #ifdef CONFIG_ISA |
279 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 280 | #endif /* CONFIG_ISA */ |
1da177e4 | 281 | |
1da177e4 LT |
282 | #ifndef CONFIG_CYZ_INTR |
283 | static void cyz_poll(unsigned long); | |
284 | ||
285 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
286 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
287 | ||
8d06afab | 288 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 289 | |
02f1175c | 290 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
291 | static void cyz_rx_restart(unsigned long); |
292 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 293 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 294 | |
3aeea5b9 JS |
295 | static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
296 | { | |
297 | struct cyclades_card *card = port->card; | |
298 | ||
299 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
300 | } | |
301 | ||
302 | static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) | |
303 | { | |
304 | struct cyclades_card *card = port->card; | |
305 | ||
306 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
307 | } | |
308 | ||
2693f485 JS |
309 | static inline bool cy_is_Z(struct cyclades_card *card) |
310 | { | |
311 | return card->num_chips == (unsigned int)-1; | |
312 | } | |
313 | ||
314 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
315 | { | |
316 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
317 | } | |
318 | ||
319 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
320 | { | |
321 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
322 | } | |
323 | ||
324 | static inline bool cyz_is_loaded(struct cyclades_card *card) | |
325 | { | |
326 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
327 | ||
328 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
329 | readl(&fw_id->signature) == ZFIRM_ID; | |
330 | } | |
331 | ||
02f1175c | 332 | static inline int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 333 | const char *name, const char *routine) |
1da177e4 LT |
334 | { |
335 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 336 | if (!info) { |
21719191 JS |
337 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
338 | "in %s\n", name, routine); | |
02f1175c JS |
339 | return 1; |
340 | } | |
341 | ||
02f1175c | 342 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
343 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
344 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
345 | return 1; |
346 | } | |
1da177e4 | 347 | #endif |
02f1175c | 348 | return 0; |
ebdb5135 | 349 | } |
1da177e4 | 350 | |
1da177e4 LT |
351 | /***********************************************************/ |
352 | /********* Start of block of Cyclom-Y specific code ********/ | |
353 | ||
354 | /* This routine waits up to 1000 micro-seconds for the previous | |
355 | command to the Cirrus chip to complete and then issues the | |
356 | new command. An error is returned if the previous command | |
357 | didn't finish within the time limit. | |
358 | ||
359 | This function is only called from inside spinlock-protected code. | |
360 | */ | |
3aeea5b9 | 361 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 362 | { |
3aeea5b9 | 363 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 364 | unsigned int i; |
1da177e4 | 365 | |
02f1175c JS |
366 | /* Check to see that the previous command has completed */ |
367 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 368 | if (readb(ccr) == 0) |
02f1175c | 369 | break; |
02f1175c | 370 | udelay(10L); |
1da177e4 | 371 | } |
02f1175c JS |
372 | /* if the CCR never cleared, the previous command |
373 | didn't finish within the "reasonable time" */ | |
374 | if (i == 100) | |
096dcfce | 375 | return -1; |
1da177e4 | 376 | |
02f1175c | 377 | /* Issue the new command */ |
3aeea5b9 | 378 | cy_writeb(ccr, cmd); |
1da177e4 | 379 | |
096dcfce | 380 | return 0; |
3aeea5b9 JS |
381 | } |
382 | ||
383 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
384 | { | |
385 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
386 | port->card->bus_index); | |
387 | } | |
1da177e4 LT |
388 | |
389 | #ifdef CONFIG_ISA | |
390 | /* ISA interrupt detection code */ | |
15ed6cc0 | 391 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 392 | { |
02f1175c JS |
393 | int irq; |
394 | unsigned long irqs, flags; | |
395 | int save_xir, save_car; | |
396 | int index = 0; /* IRQ probing is only for ISA */ | |
397 | ||
398 | /* forget possible initially masked and pending IRQ */ | |
399 | irq = probe_irq_off(probe_irq_on()); | |
400 | ||
401 | /* Clear interrupts on the board first */ | |
402 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
403 | /* Cy_ClrIntr is 0x1800 */ | |
404 | ||
405 | irqs = probe_irq_on(); | |
406 | /* Wait ... */ | |
f6e208c1 | 407 | msleep(5); |
02f1175c JS |
408 | |
409 | /* Enable the Tx interrupts on the CD1400 */ | |
410 | local_irq_save(flags); | |
411 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 412 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
413 | |
414 | cy_writeb(address + (CyCAR << index), 0); | |
415 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 416 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
417 | local_irq_restore(flags); |
418 | ||
419 | /* Wait ... */ | |
f6e208c1 | 420 | msleep(5); |
02f1175c JS |
421 | |
422 | /* Check which interrupt is in use */ | |
423 | irq = probe_irq_off(irqs); | |
424 | ||
425 | /* Clean up */ | |
db05c3b1 JS |
426 | save_xir = (u_char) readb(address + (CyTIR << index)); |
427 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
428 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
429 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 430 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
431 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
432 | cy_writeb(address + (CyCAR << index), (save_car)); | |
433 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
434 | /* Cy_ClrIntr is 0x1800 */ | |
435 | ||
436 | return (irq > 0) ? irq : 0; | |
1da177e4 | 437 | } |
02f1175c | 438 | #endif /* CONFIG_ISA */ |
1da177e4 | 439 | |
ce97a097 JS |
440 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
441 | void __iomem *base_addr) | |
e941027f JS |
442 | { |
443 | struct cyclades_port *info; | |
444 | struct tty_struct *tty; | |
65f76a82 | 445 | int len, index = cinfo->bus_index; |
3aeea5b9 | 446 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 447 | |
e941027f | 448 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 449 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 450 | #endif |
ce97a097 | 451 | /* determine the channel & change to that context */ |
65f76a82 JS |
452 | save_xir = readb(base_addr + (CyRIR << index)); |
453 | channel = save_xir & CyIRChannel; | |
ce97a097 | 454 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
455 | save_car = cyy_readb(info, CyCAR); |
456 | cyy_writeb(info, CyCAR, save_xir); | |
457 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 458 | |
d13549f8 | 459 | tty = tty_port_tty_get(&info->port); |
ce97a097 | 460 | /* if there is nowhere to put the data, discard it */ |
d13549f8 | 461 | if (tty == NULL) { |
3aeea5b9 JS |
462 | if (ivr == CyIVRRxEx) { /* exception */ |
463 | data = cyy_readb(info, CyRDSR); | |
ce97a097 | 464 | } else { /* normal character reception */ |
3aeea5b9 | 465 | char_count = cyy_readb(info, CyRDCR); |
ce97a097 | 466 | while (char_count--) |
3aeea5b9 | 467 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
468 | } |
469 | goto end; | |
470 | } | |
471 | /* there is an open port for this data */ | |
3aeea5b9 JS |
472 | if (ivr == CyIVRRxEx) { /* exception */ |
473 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
474 | |
475 | /* For statistics only */ | |
476 | if (data & CyBREAK) | |
477 | info->icount.brk++; | |
478 | else if (data & CyFRAME) | |
479 | info->icount.frame++; | |
480 | else if (data & CyPARITY) | |
481 | info->icount.parity++; | |
482 | else if (data & CyOVERRUN) | |
483 | info->icount.overrun++; | |
484 | ||
485 | if (data & info->ignore_status_mask) { | |
486 | info->icount.rx++; | |
d13549f8 | 487 | tty_kref_put(tty); |
ce97a097 JS |
488 | return; |
489 | } | |
490 | if (tty_buffer_request_room(tty, 1)) { | |
491 | if (data & info->read_status_mask) { | |
492 | if (data & CyBREAK) { | |
493 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
494 | cyy_readb(info, CyRDSR), |
495 | TTY_BREAK); | |
ce97a097 | 496 | info->icount.rx++; |
77451e53 | 497 | if (info->port.flags & ASYNC_SAK) |
ce97a097 JS |
498 | do_SAK(tty); |
499 | } else if (data & CyFRAME) { | |
15ed6cc0 | 500 | tty_insert_flip_char(tty, |
3aeea5b9 JS |
501 | cyy_readb(info, CyRDSR), |
502 | TTY_FRAME); | |
ce97a097 JS |
503 | info->icount.rx++; |
504 | info->idle_stats.frame_errs++; | |
505 | } else if (data & CyPARITY) { | |
506 | /* Pieces of seven... */ | |
507 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
508 | cyy_readb(info, CyRDSR), |
509 | TTY_PARITY); | |
ce97a097 JS |
510 | info->icount.rx++; |
511 | info->idle_stats.parity_errs++; | |
512 | } else if (data & CyOVERRUN) { | |
513 | tty_insert_flip_char(tty, 0, | |
514 | TTY_OVERRUN); | |
515 | info->icount.rx++; | |
516 | /* If the flip buffer itself is | |
517 | overflowing, we still lose | |
518 | the next incoming character. | |
519 | */ | |
520 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
521 | cyy_readb(info, CyRDSR), |
522 | TTY_FRAME); | |
02f1175c | 523 | info->icount.rx++; |
02f1175c | 524 | info->idle_stats.overruns++; |
ce97a097 JS |
525 | /* These two conditions may imply */ |
526 | /* a normal read should be done. */ | |
527 | /* } else if(data & CyTIMEOUT) { */ | |
528 | /* } else if(data & CySPECHAR) { */ | |
529 | } else { | |
530 | tty_insert_flip_char(tty, 0, | |
531 | TTY_NORMAL); | |
532 | info->icount.rx++; | |
02f1175c | 533 | } |
ce97a097 JS |
534 | } else { |
535 | tty_insert_flip_char(tty, 0, TTY_NORMAL); | |
536 | info->icount.rx++; | |
537 | } | |
538 | } else { | |
539 | /* there was a software buffer overrun and nothing | |
540 | * could be done about it!!! */ | |
541 | info->icount.buf_overrun++; | |
542 | info->idle_stats.overruns++; | |
543 | } | |
544 | } else { /* normal character reception */ | |
545 | /* load # chars available from the chip */ | |
3aeea5b9 | 546 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
547 | |
548 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
549 | ++info->mon.int_count; |
550 | info->mon.char_count += char_count; | |
551 | if (char_count > info->mon.char_max) | |
552 | info->mon.char_max = char_count; | |
553 | info->mon.char_last = char_count; | |
e941027f | 554 | #endif |
ce97a097 JS |
555 | len = tty_buffer_request_room(tty, char_count); |
556 | while (len--) { | |
3aeea5b9 | 557 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
558 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
559 | info->idle_stats.recv_bytes++; | |
560 | info->icount.rx++; | |
e941027f | 561 | #ifdef CY_16Y_HACK |
ce97a097 | 562 | udelay(10L); |
e941027f | 563 | #endif |
e941027f | 564 | } |
ce97a097 | 565 | info->idle_stats.recv_idle = jiffies; |
e941027f | 566 | } |
ce97a097 | 567 | tty_schedule_flip(tty); |
d13549f8 | 568 | tty_kref_put(tty); |
ce97a097 JS |
569 | end: |
570 | /* end of service */ | |
3aeea5b9 JS |
571 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
572 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 573 | } |
e941027f | 574 | |
65f76a82 | 575 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
576 | void __iomem *base_addr) |
577 | { | |
578 | struct cyclades_port *info; | |
d13549f8 | 579 | struct tty_struct *tty; |
65f76a82 JS |
580 | int char_count, index = cinfo->bus_index; |
581 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
582 | |
583 | /* Since we only get here when the transmit buffer | |
584 | is empty, we know we can always stuff a dozen | |
585 | characters. */ | |
e941027f | 586 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 587 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
588 | #endif |
589 | ||
ce97a097 | 590 | /* determine the channel & change to that context */ |
65f76a82 JS |
591 | save_xir = readb(base_addr + (CyTIR << index)); |
592 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
593 | save_car = readb(base_addr + (CyCAR << index)); |
594 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
595 | ||
ce97a097 | 596 | info = &cinfo->ports[channel + chip * 4]; |
d13549f8 JS |
597 | tty = tty_port_tty_get(&info->port); |
598 | if (tty == NULL) { | |
3aeea5b9 | 599 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
600 | goto end; |
601 | } | |
02f1175c | 602 | |
ce97a097 JS |
603 | /* load the on-chip space for outbound data */ |
604 | char_count = info->xmit_fifo_size; | |
02f1175c | 605 | |
ce97a097 JS |
606 | if (info->x_char) { /* send special char */ |
607 | outch = info->x_char; | |
3aeea5b9 | 608 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
609 | char_count--; |
610 | info->icount.tx++; | |
611 | info->x_char = 0; | |
612 | } | |
02f1175c | 613 | |
ce97a097 JS |
614 | if (info->breakon || info->breakoff) { |
615 | if (info->breakon) { | |
3aeea5b9 JS |
616 | cyy_writeb(info, CyTDR, 0); |
617 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
618 | info->breakon = 0; |
619 | char_count -= 2; | |
e941027f | 620 | } |
ce97a097 | 621 | if (info->breakoff) { |
3aeea5b9 JS |
622 | cyy_writeb(info, CyTDR, 0); |
623 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
624 | info->breakoff = 0; |
625 | char_count -= 2; | |
e941027f | 626 | } |
ce97a097 | 627 | } |
02f1175c | 628 | |
ce97a097 JS |
629 | while (char_count-- > 0) { |
630 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
631 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
632 | cyy_writeb(info, CySRER, | |
633 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 634 | } else { |
3aeea5b9 JS |
635 | cyy_writeb(info, CySRER, CyTxMpty | |
636 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 637 | } |
ce97a097 JS |
638 | goto done; |
639 | } | |
77451e53 | 640 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
641 | cyy_writeb(info, CySRER, |
642 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
643 | goto done; |
644 | } | |
d13549f8 | 645 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
646 | cyy_writeb(info, CySRER, |
647 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
648 | goto done; |
649 | } | |
650 | /* Because the Embedded Transmit Commands have been enabled, | |
651 | * we must check to see if the escape character, NULL, is being | |
652 | * sent. If it is, we must ensure that there is room for it to | |
653 | * be doubled in the output stream. Therefore we no longer | |
654 | * advance the pointer when the character is fetched, but | |
655 | * rather wait until after the check for a NULL output | |
656 | * character. This is necessary because there may not be room | |
657 | * for the two chars needed to send a NULL.) | |
658 | */ | |
77451e53 | 659 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
660 | if (outch) { |
661 | info->xmit_cnt--; | |
662 | info->xmit_tail = (info->xmit_tail + 1) & | |
663 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 664 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
665 | info->icount.tx++; |
666 | } else { | |
667 | if (char_count > 1) { | |
02f1175c JS |
668 | info->xmit_cnt--; |
669 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 670 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
671 | cyy_writeb(info, CyTDR, outch); |
672 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 673 | info->icount.tx++; |
ce97a097 | 674 | char_count--; |
02f1175c | 675 | } |
e941027f | 676 | } |
e941027f JS |
677 | } |
678 | ||
ce97a097 | 679 | done: |
d13549f8 JS |
680 | tty_wakeup(tty); |
681 | tty_kref_put(tty); | |
ce97a097 JS |
682 | end: |
683 | /* end of service */ | |
3aeea5b9 JS |
684 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
685 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 686 | } |
02f1175c | 687 | |
ce97a097 JS |
688 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
689 | void __iomem *base_addr) | |
690 | { | |
691 | struct cyclades_port *info; | |
d13549f8 | 692 | struct tty_struct *tty; |
65f76a82 JS |
693 | int index = cinfo->bus_index; |
694 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
695 | |
696 | /* determine the channel & change to that context */ | |
65f76a82 JS |
697 | save_xir = readb(base_addr + (CyMIR << index)); |
698 | channel = save_xir & CyIRChannel; | |
ce97a097 | 699 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
700 | save_car = cyy_readb(info, CyCAR); |
701 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 702 | |
3aeea5b9 JS |
703 | mdm_change = cyy_readb(info, CyMISR); |
704 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 705 | |
d13549f8 JS |
706 | tty = tty_port_tty_get(&info->port); |
707 | if (!tty) | |
ce97a097 JS |
708 | goto end; |
709 | ||
710 | if (mdm_change & CyANY_DELTA) { | |
711 | /* For statistics only */ | |
712 | if (mdm_change & CyDCD) | |
713 | info->icount.dcd++; | |
714 | if (mdm_change & CyCTS) | |
715 | info->icount.cts++; | |
716 | if (mdm_change & CyDSR) | |
717 | info->icount.dsr++; | |
718 | if (mdm_change & CyRI) | |
719 | info->icount.rng++; | |
720 | ||
bdc04e31 | 721 | wake_up_interruptible(&info->port.delta_msr_wait); |
ce97a097 JS |
722 | } |
723 | ||
77451e53 | 724 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
174e6fe0 JS |
725 | if (mdm_status & CyDCD) |
726 | wake_up_interruptible(&info->port.open_wait); | |
727 | else | |
d13549f8 | 728 | tty_hangup(tty); |
ce97a097 | 729 | } |
77451e53 | 730 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
d13549f8 | 731 | if (tty->hw_stopped) { |
ce97a097 JS |
732 | if (mdm_status & CyCTS) { |
733 | /* cy_start isn't used | |
734 | because... !!! */ | |
d13549f8 | 735 | tty->hw_stopped = 0; |
3aeea5b9 JS |
736 | cyy_writeb(info, CySRER, |
737 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 738 | tty_wakeup(tty); |
02f1175c | 739 | } |
ce97a097 JS |
740 | } else { |
741 | if (!(mdm_status & CyCTS)) { | |
742 | /* cy_stop isn't used | |
743 | because ... !!! */ | |
d13549f8 | 744 | tty->hw_stopped = 1; |
3aeea5b9 JS |
745 | cyy_writeb(info, CySRER, |
746 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 747 | } |
e941027f | 748 | } |
e941027f | 749 | } |
ce97a097 JS |
750 | /* if (mdm_change & CyDSR) { |
751 | } | |
752 | if (mdm_change & CyRI) { | |
753 | }*/ | |
d13549f8 | 754 | tty_kref_put(tty); |
ce97a097 JS |
755 | end: |
756 | /* end of service */ | |
3aeea5b9 JS |
757 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
758 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
759 | } |
760 | ||
1da177e4 LT |
761 | /* The real interrupt service routine is called |
762 | whenever the card wants its hand held--chars | |
763 | received, out buffer empty, modem change, etc. | |
764 | */ | |
02f1175c | 765 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 766 | { |
02f1175c | 767 | int status; |
f7429034 | 768 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 769 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 770 | unsigned int chip, too_many, had_work; |
02f1175c | 771 | int index; |
02f1175c | 772 | |
f7429034 | 773 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 774 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
775 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
776 | irq); | |
1da177e4 | 777 | #endif |
02f1175c JS |
778 | return IRQ_NONE; /* spurious interrupt */ |
779 | } | |
780 | ||
781 | card_base_addr = cinfo->base_addr; | |
782 | index = cinfo->bus_index; | |
783 | ||
f1e83c6c JS |
784 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
785 | if (unlikely(card_base_addr == NULL)) | |
786 | return IRQ_HANDLED; | |
787 | ||
02f1175c JS |
788 | /* This loop checks all chips in the card. Make a note whenever |
789 | _any_ chip had some work to do, as this is considered an | |
790 | indication that there will be more to do. Only when no chip | |
791 | has any work does this outermost loop exit. | |
792 | */ | |
793 | do { | |
794 | had_work = 0; | |
795 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
796 | base_addr = cinfo->base_addr + | |
797 | (cy_chip_offset[chip] << index); | |
798 | too_many = 0; | |
db05c3b1 | 799 | while ((status = readb(base_addr + |
02f1175c JS |
800 | (CySVRR << index))) != 0x00) { |
801 | had_work++; | |
802 | /* The purpose of the following test is to ensure that | |
803 | no chip can monopolize the driver. This forces the | |
804 | chips to be checked in a round-robin fashion (after | |
805 | draining each of a bunch (1000) of characters). | |
806 | */ | |
ce97a097 | 807 | if (1000 < too_many++) |
02f1175c | 808 | break; |
1c0a387c | 809 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
810 | if (status & CySRReceive) /* rx intr */ |
811 | cyy_chip_rx(cinfo, chip, base_addr); | |
812 | if (status & CySRTransmit) /* tx intr */ | |
813 | cyy_chip_tx(cinfo, chip, base_addr); | |
814 | if (status & CySRModem) /* modem intr */ | |
815 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 816 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
817 | } |
818 | } | |
819 | } while (had_work); | |
820 | ||
821 | /* clear interrupts */ | |
822 | spin_lock(&cinfo->card_lock); | |
823 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
824 | /* Cy_ClrIntr is 0x1800 */ | |
825 | spin_unlock(&cinfo->card_lock); | |
826 | return IRQ_HANDLED; | |
827 | } /* cyy_interrupt */ | |
1da177e4 | 828 | |
4d768200 JS |
829 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
830 | unsigned int clear) | |
831 | { | |
832 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 833 | int channel = info->line - card->first_line; |
0d348729 | 834 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 835 | |
4d768200 | 836 | channel &= 0x03; |
4d768200 | 837 | |
0d348729 JS |
838 | if (info->rtsdtr_inv) { |
839 | msvrr = CyMSVR2; | |
840 | msvrd = CyMSVR1; | |
841 | rts = CyDTR; | |
842 | dtr = CyRTS; | |
843 | } else { | |
844 | msvrr = CyMSVR1; | |
845 | msvrd = CyMSVR2; | |
846 | rts = CyRTS; | |
847 | dtr = CyDTR; | |
848 | } | |
4d768200 | 849 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
850 | cyy_writeb(info, CyCAR, channel); |
851 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
852 | } |
853 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
854 | cyy_writeb(info, CyCAR, channel); |
855 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
856 | } |
857 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
858 | cyy_writeb(info, CyCAR, channel); |
859 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
860 | #ifdef CY_DEBUG_DTR |
861 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
862 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
863 | cyy_readb(info, CyMSVR1), |
864 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
865 | #endif |
866 | } | |
867 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
868 | cyy_writeb(info, CyCAR, channel); |
869 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
870 | #ifdef CY_DEBUG_DTR |
871 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
872 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
873 | cyy_readb(info, CyMSVR1), |
874 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
875 | #endif |
876 | } | |
877 | } | |
878 | ||
1da177e4 LT |
879 | /***********************************************************/ |
880 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 881 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
882 | /***********************************************************/ |
883 | ||
884 | static int | |
02f1175c | 885 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 886 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 887 | { |
f0eefdc3 | 888 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
889 | unsigned long loc_doorbell; |
890 | ||
97e87f8e | 891 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
892 | if (loc_doorbell) { |
893 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
894 | *channel = readl(&board_ctrl->fwcmd_channel); |
895 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 896 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
897 | return 1; |
898 | } | |
899 | return 0; | |
900 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
901 | |
902 | static int | |
02f1175c | 903 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 904 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 905 | { |
f0eefdc3 | 906 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 907 | __u32 __iomem *pci_doorbell; |
65f76a82 | 908 | unsigned int index; |
02f1175c | 909 | |
2693f485 | 910 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 911 | return -1; |
15ed6cc0 | 912 | |
02f1175c | 913 | index = 0; |
97e87f8e | 914 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 915 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 916 | if (index++ == 1000) |
db05c3b1 | 917 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
918 | udelay(50L); |
919 | } | |
920 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
921 | cy_writel(&board_ctrl->hcmd_param, param); | |
922 | cy_writel(pci_doorbell, (long)cmd); | |
923 | ||
096dcfce | 924 | return 0; |
02f1175c | 925 | } /* cyz_issue_cmd */ |
1da177e4 | 926 | |
f0eefdc3 | 927 | static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 928 | { |
f0eefdc3 | 929 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 930 | struct cyclades_card *cinfo = info->card; |
65f76a82 | 931 | unsigned int char_count; |
02f1175c | 932 | int len; |
1da177e4 | 933 | #ifdef BLOCKMOVE |
ce71b0ff | 934 | unsigned char *buf; |
1da177e4 | 935 | #else |
02f1175c | 936 | char data; |
1da177e4 | 937 | #endif |
ad39c300 | 938 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 939 | |
db05c3b1 JS |
940 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
941 | rx_put = readl(&buf_ctrl->rx_put); | |
942 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
943 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
944 | if (rx_put >= rx_get) |
945 | char_count = rx_put - rx_get; | |
946 | else | |
947 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 948 | |
02f1175c | 949 | if (char_count) { |
1da177e4 | 950 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
951 | info->mon.int_count++; |
952 | info->mon.char_count += char_count; | |
953 | if (char_count > info->mon.char_max) | |
954 | info->mon.char_max = char_count; | |
955 | info->mon.char_last = char_count; | |
1da177e4 | 956 | #endif |
f7429034 | 957 | if (tty == NULL) { |
02f1175c JS |
958 | /* flush received characters */ |
959 | new_rx_get = (new_rx_get + char_count) & | |
960 | (rx_bufsize - 1); | |
961 | info->rflush_count++; | |
962 | } else { | |
1da177e4 | 963 | #ifdef BLOCKMOVE |
02f1175c JS |
964 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
965 | for performance, but because of buffer boundaries, there | |
966 | may be several steps to the operation */ | |
ce71b0ff JS |
967 | while (1) { |
968 | len = tty_prepare_flip_string(tty, &buf, | |
969 | char_count); | |
970 | if (!len) | |
971 | break; | |
972 | ||
973 | len = min_t(unsigned int, min(len, char_count), | |
974 | rx_bufsize - new_rx_get); | |
975 | ||
976 | memcpy_fromio(buf, cinfo->base_addr + | |
977 | rx_bufaddr + new_rx_get, len); | |
978 | ||
979 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 980 | (rx_bufsize - 1); |
ce71b0ff JS |
981 | char_count -= len; |
982 | info->icount.rx += len; | |
983 | info->idle_stats.recv_bytes += len; | |
02f1175c | 984 | } |
1da177e4 | 985 | #else |
02f1175c JS |
986 | len = tty_buffer_request_room(tty, char_count); |
987 | while (len--) { | |
db05c3b1 | 988 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c | 989 | new_rx_get); |
15ed6cc0 AC |
990 | new_rx_get = (new_rx_get + 1) & |
991 | (rx_bufsize - 1); | |
02f1175c JS |
992 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
993 | info->idle_stats.recv_bytes++; | |
994 | info->icount.rx++; | |
995 | } | |
1da177e4 LT |
996 | #endif |
997 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
998 | /* Recalculate the number of chars in the RX buffer and issue |
999 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1000 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1001 | if (rx_put >= rx_get) |
1002 | char_count = rx_put - rx_get; | |
1003 | else | |
1004 | char_count = rx_put - rx_get + rx_bufsize; | |
65f76a82 | 1005 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
ebafeeff JS |
1006 | !timer_pending(&cyz_rx_full_timer[ |
1007 | info->line])) | |
1008 | mod_timer(&cyz_rx_full_timer[info->line], | |
1009 | jiffies + 1); | |
1da177e4 | 1010 | #endif |
02f1175c JS |
1011 | info->idle_stats.recv_idle = jiffies; |
1012 | tty_schedule_flip(tty); | |
1013 | } | |
1014 | /* Update rx_get */ | |
1015 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1016 | } |
1da177e4 LT |
1017 | } |
1018 | ||
f0eefdc3 | 1019 | static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1020 | { |
f0eefdc3 | 1021 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1022 | struct cyclades_card *cinfo = info->card; |
65f76a82 JS |
1023 | u8 data; |
1024 | unsigned int char_count; | |
1da177e4 | 1025 | #ifdef BLOCKMOVE |
02f1175c | 1026 | int small_count; |
1da177e4 | 1027 | #endif |
ad39c300 | 1028 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1029 | |
02f1175c JS |
1030 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1031 | return; | |
1da177e4 | 1032 | |
db05c3b1 JS |
1033 | tx_get = readl(&buf_ctrl->tx_get); |
1034 | tx_put = readl(&buf_ctrl->tx_put); | |
1035 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1036 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1037 | if (tx_put >= tx_get) |
1038 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1039 | else | |
1040 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1041 | |
02f1175c | 1042 | if (char_count) { |
1da177e4 | 1043 | |
f7429034 | 1044 | if (tty == NULL) |
02f1175c | 1045 | goto ztxdone; |
1da177e4 | 1046 | |
02f1175c JS |
1047 | if (info->x_char) { /* send special char */ |
1048 | data = info->x_char; | |
1da177e4 | 1049 | |
02f1175c JS |
1050 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1051 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1052 | info->x_char = 0; | |
1053 | char_count--; | |
1054 | info->icount.tx++; | |
02f1175c | 1055 | } |
1da177e4 | 1056 | #ifdef BLOCKMOVE |
02f1175c JS |
1057 | while (0 < (small_count = min_t(unsigned int, |
1058 | tx_bufsize - tx_put, min_t(unsigned int, | |
1059 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1060 | min_t(unsigned int, info->xmit_cnt, | |
1061 | char_count))))) { | |
1062 | ||
1063 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1064 | tx_put), | |
77451e53 | 1065 | &info->port.xmit_buf[info->xmit_tail], |
02f1175c JS |
1066 | small_count); |
1067 | ||
1068 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1069 | char_count -= small_count; | |
1070 | info->icount.tx += small_count; | |
1071 | info->xmit_cnt -= small_count; | |
1072 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1073 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1074 | } |
1da177e4 | 1075 | #else |
02f1175c | 1076 | while (info->xmit_cnt && char_count) { |
77451e53 | 1077 | data = info->port.xmit_buf[info->xmit_tail]; |
02f1175c JS |
1078 | info->xmit_cnt--; |
1079 | info->xmit_tail = (info->xmit_tail + 1) & | |
1080 | (SERIAL_XMIT_SIZE - 1); | |
1081 | ||
1082 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1083 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1084 | char_count--; | |
1085 | info->icount.tx++; | |
02f1175c | 1086 | } |
1da177e4 | 1087 | #endif |
ebafeeff | 1088 | tty_wakeup(tty); |
7fa57a0c | 1089 | ztxdone: |
02f1175c JS |
1090 | /* Update tx_put */ |
1091 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1092 | } |
1da177e4 LT |
1093 | } |
1094 | ||
02f1175c | 1095 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1096 | { |
f0eefdc3 | 1097 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
1098 | struct tty_struct *tty; |
1099 | struct cyclades_port *info; | |
101b8159 | 1100 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1101 | __u8 cmd; |
02f1175c JS |
1102 | int special_count; |
1103 | int delta_count; | |
1104 | ||
db05c3b1 | 1105 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1106 | |
1107 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1108 | special_count = 0; | |
1109 | delta_count = 0; | |
dd025c0c | 1110 | info = &cinfo->ports[channel]; |
d13549f8 | 1111 | tty = tty_port_tty_get(&info->port); |
15ed6cc0 | 1112 | if (tty == NULL) |
02f1175c | 1113 | continue; |
f7429034 | 1114 | |
02f1175c JS |
1115 | switch (cmd) { |
1116 | case C_CM_PR_ERROR: | |
1117 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1118 | info->icount.rx++; | |
1119 | special_count++; | |
1120 | break; | |
1121 | case C_CM_FR_ERROR: | |
1122 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1123 | info->icount.rx++; | |
1124 | special_count++; | |
1125 | break; | |
1126 | case C_CM_RXBRK: | |
1127 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1128 | info->icount.rx++; | |
1129 | special_count++; | |
1130 | break; | |
1131 | case C_CM_MDCD: | |
1132 | info->icount.dcd++; | |
1133 | delta_count++; | |
77451e53 | 1134 | if (info->port.flags & ASYNC_CHECK_CD) { |
f0eefdc3 JS |
1135 | u32 dcd = fw_ver > 241 ? param : |
1136 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1137 | if (dcd & C_RS_DCD) |
77451e53 | 1138 | wake_up_interruptible(&info->port.open_wait); |
174e6fe0 | 1139 | else |
d13549f8 | 1140 | tty_hangup(tty); |
02f1175c JS |
1141 | } |
1142 | break; | |
1143 | case C_CM_MCTS: | |
1144 | info->icount.cts++; | |
1145 | delta_count++; | |
1146 | break; | |
1147 | case C_CM_MRI: | |
1148 | info->icount.rng++; | |
1149 | delta_count++; | |
1150 | break; | |
1151 | case C_CM_MDSR: | |
1152 | info->icount.dsr++; | |
1153 | delta_count++; | |
1154 | break; | |
1da177e4 | 1155 | #ifdef Z_WAKE |
02f1175c | 1156 | case C_CM_IOCTLW: |
ebafeeff | 1157 | complete(&info->shutdown_wait); |
02f1175c | 1158 | break; |
1da177e4 LT |
1159 | #endif |
1160 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1161 | case C_CM_RXHIWM: |
1162 | case C_CM_RXNNDT: | |
1163 | case C_CM_INTBACK2: | |
1164 | /* Reception Interrupt */ | |
1da177e4 | 1165 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1166 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1167 | "port %ld\n", info->card, channel); | |
1da177e4 | 1168 | #endif |
f0eefdc3 | 1169 | cyz_handle_rx(info, tty); |
02f1175c JS |
1170 | break; |
1171 | case C_CM_TXBEMPTY: | |
1172 | case C_CM_TXLOWWM: | |
1173 | case C_CM_INTBACK: | |
1174 | /* Transmission Interrupt */ | |
1da177e4 | 1175 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1176 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1177 | "port %ld\n", info->card, channel); | |
1da177e4 | 1178 | #endif |
f0eefdc3 | 1179 | cyz_handle_tx(info, tty); |
02f1175c JS |
1180 | break; |
1181 | #endif /* CONFIG_CYZ_INTR */ | |
1182 | case C_CM_FATAL: | |
1183 | /* should do something with this !!! */ | |
1184 | break; | |
1185 | default: | |
1186 | break; | |
1187 | } | |
1188 | if (delta_count) | |
bdc04e31 | 1189 | wake_up_interruptible(&info->port.delta_msr_wait); |
02f1175c JS |
1190 | if (special_count) |
1191 | tty_schedule_flip(tty); | |
d13549f8 | 1192 | tty_kref_put(tty); |
1da177e4 | 1193 | } |
1da177e4 LT |
1194 | } |
1195 | ||
1196 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1197 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1198 | { |
f7429034 | 1199 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1200 | |
2693f485 | 1201 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1202 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1203 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1204 | "(IRQ%d).\n", irq); | |
1da177e4 | 1205 | #endif |
02f1175c JS |
1206 | return IRQ_NONE; |
1207 | } | |
1da177e4 | 1208 | |
02f1175c JS |
1209 | /* Handle the interrupts */ |
1210 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1211 | |
02f1175c JS |
1212 | return IRQ_HANDLED; |
1213 | } /* cyz_interrupt */ | |
1da177e4 | 1214 | |
02f1175c | 1215 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1216 | { |
02f1175c | 1217 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1218 | struct cyclades_card *card = info->card; |
02f1175c | 1219 | int retval; |
875b206b | 1220 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1221 | unsigned long flags; |
1222 | ||
9fa1b3b1 | 1223 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1224 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1225 | if (retval != 0) { |
21719191 | 1226 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1227 | info->line, retval); |
1228 | } | |
9fa1b3b1 | 1229 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1230 | } |
1231 | ||
02f1175c | 1232 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1233 | |
02f1175c | 1234 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1235 | { |
02f1175c JS |
1236 | struct cyclades_card *cinfo; |
1237 | struct cyclades_port *info; | |
b7050906 | 1238 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1239 | unsigned int port, card; |
1da177e4 | 1240 | |
02f1175c JS |
1241 | for (card = 0; card < NR_CARDS; card++) { |
1242 | cinfo = &cy_card[card]; | |
1243 | ||
2693f485 | 1244 | if (!cy_is_Z(cinfo)) |
02f1175c | 1245 | continue; |
2693f485 | 1246 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1247 | continue; |
1248 | ||
1da177e4 | 1249 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1250 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1251 | cinfo->intr_enabled = 1; |
1252 | continue; | |
1253 | } | |
1da177e4 | 1254 | |
02f1175c | 1255 | cyz_handle_cmd(cinfo); |
1da177e4 | 1256 | |
02f1175c | 1257 | for (port = 0; port < cinfo->nports; port++) { |
d13549f8 JS |
1258 | struct tty_struct *tty; |
1259 | ||
dd025c0c | 1260 | info = &cinfo->ports[port]; |
d13549f8 JS |
1261 | tty = tty_port_tty_get(&info->port); |
1262 | /* OK to pass NULL to the handle functions below. | |
1263 | They need to drop the data in that case. */ | |
1264 | ||
02f1175c | 1265 | if (!info->throttle) |
f0eefdc3 JS |
1266 | cyz_handle_rx(info, tty); |
1267 | cyz_handle_tx(info, tty); | |
d13549f8 | 1268 | tty_kref_put(tty); |
02f1175c JS |
1269 | } |
1270 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1271 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1272 | } |
b7050906 | 1273 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1274 | } /* cyz_poll */ |
1da177e4 | 1275 | |
02f1175c | 1276 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1277 | |
1278 | /********** End of block of Cyclades-Z specific code *********/ | |
1279 | /***********************************************************/ | |
1280 | ||
1da177e4 LT |
1281 | /* This is called whenever a port becomes active; |
1282 | interrupts are enabled and DTR & RTS are turned on. | |
1283 | */ | |
d13549f8 | 1284 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1285 | { |
875b206b | 1286 | struct cyclades_card *card; |
02f1175c JS |
1287 | unsigned long flags; |
1288 | int retval = 0; | |
cc7fdf49 | 1289 | int channel; |
02f1175c | 1290 | unsigned long page; |
1da177e4 | 1291 | |
02f1175c | 1292 | card = info->card; |
875b206b | 1293 | channel = info->line - card->first_line; |
1da177e4 | 1294 | |
02f1175c JS |
1295 | page = get_zeroed_page(GFP_KERNEL); |
1296 | if (!page) | |
1297 | return -ENOMEM; | |
1da177e4 | 1298 | |
9fa1b3b1 | 1299 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1300 | |
cc7fdf49 | 1301 | if (info->port.flags & ASYNC_INITIALIZED) |
02f1175c | 1302 | goto errout; |
1da177e4 | 1303 | |
02f1175c | 1304 | if (!info->type) { |
d13549f8 | 1305 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1306 | goto errout; |
1307 | } | |
1da177e4 | 1308 | |
77451e53 | 1309 | if (info->port.xmit_buf) |
02f1175c JS |
1310 | free_page(page); |
1311 | else | |
77451e53 | 1312 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1313 | |
9fa1b3b1 | 1314 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1315 | |
d13549f8 | 1316 | cy_set_line_char(info, tty); |
1da177e4 | 1317 | |
2693f485 | 1318 | if (!cy_is_Z(card)) { |
02f1175c | 1319 | channel &= 0x03; |
1da177e4 | 1320 | |
9fa1b3b1 | 1321 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1322 | |
3aeea5b9 | 1323 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1324 | |
3aeea5b9 | 1325 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1326 | (info->default_timeout ? info->default_timeout : 0x02)); |
1327 | /* 10ms rx timeout */ | |
1da177e4 | 1328 | |
3aeea5b9 | 1329 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1330 | |
4d768200 | 1331 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1332 | |
3aeea5b9 | 1333 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1334 | } else { |
f0eefdc3 | 1335 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1336 | |
2693f485 | 1337 | if (!cyz_is_loaded(card)) |
02f1175c | 1338 | return -ENODEV; |
1da177e4 | 1339 | |
1da177e4 | 1340 | #ifdef CY_DEBUG_OPEN |
21719191 | 1341 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1342 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1343 | #endif |
9fa1b3b1 | 1344 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1345 | |
f0eefdc3 | 1346 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1347 | #ifdef Z_WAKE |
1348 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1349 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1350 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1351 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1352 | #else |
f0eefdc3 | 1353 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1354 | C_IN_IOCTLW | C_IN_MDCD); |
1355 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1356 | #else |
1357 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1358 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1359 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1360 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1361 | #else |
f0eefdc3 | 1362 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1363 | #endif /* CONFIG_CYZ_INTR */ |
1364 | #endif /* Z_WAKE */ | |
1365 | ||
875b206b | 1366 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1367 | if (retval != 0) { |
21719191 JS |
1368 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1369 | "%x\n", info->line, retval); | |
02f1175c | 1370 | } |
1da177e4 | 1371 | |
02f1175c | 1372 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1373 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1374 | if (retval != 0) { |
21719191 JS |
1375 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1376 | "%x\n", info->line, retval); | |
02f1175c | 1377 | } |
1da177e4 | 1378 | |
02f1175c JS |
1379 | /* set timeout !!! */ |
1380 | /* set RTS and DTR !!! */ | |
4d768200 | 1381 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1382 | |
02f1175c | 1383 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1384 | } |
02f1175c | 1385 | |
cc7fdf49 | 1386 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1387 | |
cc7fdf49 JS |
1388 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1389 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1390 | info->breakon = info->breakoff = 0; | |
1391 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1392 | info->idle_stats.in_use = | |
1393 | info->idle_stats.recv_idle = | |
1394 | info->idle_stats.xmit_idle = jiffies; | |
1395 | ||
1396 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1397 | |
1398 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1399 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1400 | #endif |
1401 | return 0; | |
1402 | ||
1403 | errout: | |
9fa1b3b1 | 1404 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1405 | free_page(page); |
1da177e4 | 1406 | return retval; |
02f1175c | 1407 | } /* startup */ |
1da177e4 | 1408 | |
02f1175c | 1409 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1410 | { |
3aeea5b9 | 1411 | struct cyclades_card *card = info->card; |
02f1175c | 1412 | unsigned long flags; |
3aeea5b9 | 1413 | int channel = info->line - card->first_line; |
1da177e4 | 1414 | |
2693f485 | 1415 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1416 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1417 | cyy_writeb(info, CyCAR, channel & 0x03); |
1418 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1419 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1420 | } else { |
1da177e4 | 1421 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1422 | int retval; |
1da177e4 | 1423 | |
9fa1b3b1 | 1424 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1425 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1426 | if (retval != 0) { |
21719191 JS |
1427 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1428 | "%x\n", info->line, retval); | |
02f1175c | 1429 | } |
9fa1b3b1 | 1430 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1431 | #else /* CONFIG_CYZ_INTR */ |
1432 | /* Don't have to do anything at this time */ | |
1433 | #endif /* CONFIG_CYZ_INTR */ | |
1434 | } | |
1435 | } /* start_xmit */ | |
1da177e4 LT |
1436 | |
1437 | /* | |
1438 | * This routine shuts down a serial port; interrupts are disabled, | |
1439 | * and DTR is dropped if the hangup on close termio flag is on. | |
1440 | */ | |
d13549f8 | 1441 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1442 | { |
875b206b | 1443 | struct cyclades_card *card; |
02f1175c | 1444 | unsigned long flags; |
02f1175c | 1445 | |
77451e53 | 1446 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 1447 | return; |
02f1175c JS |
1448 | |
1449 | card = info->card; | |
2693f485 | 1450 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1451 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1452 | |
1453 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
bdc04e31 | 1454 | wake_up_interruptible(&info->port.delta_msr_wait); |
1da177e4 | 1455 | |
77451e53 | 1456 | if (info->port.xmit_buf) { |
02f1175c | 1457 | unsigned char *temp; |
77451e53 AC |
1458 | temp = info->port.xmit_buf; |
1459 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1460 | free_page((unsigned long)temp); |
1461 | } | |
adc8d746 | 1462 | if (tty->termios.c_cflag & HUPCL) |
4d768200 JS |
1463 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); |
1464 | ||
3aeea5b9 | 1465 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1466 | /* it may be appropriate to clear _XMIT at |
1467 | some later date (after testing)!!! */ | |
1468 | ||
d13549f8 | 1469 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1470 | info->port.flags &= ~ASYNC_INITIALIZED; |
9fa1b3b1 | 1471 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1472 | } else { |
1da177e4 | 1473 | #ifdef CY_DEBUG_OPEN |
0e7f4194 | 1474 | int channel = info->line - card->first_line; |
21719191 | 1475 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1476 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1477 | #endif |
1478 | ||
2693f485 | 1479 | if (!cyz_is_loaded(card)) |
02f1175c | 1480 | return; |
1da177e4 | 1481 | |
9fa1b3b1 | 1482 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1483 | |
77451e53 | 1484 | if (info->port.xmit_buf) { |
02f1175c | 1485 | unsigned char *temp; |
77451e53 AC |
1486 | temp = info->port.xmit_buf; |
1487 | info->port.xmit_buf = NULL; | |
02f1175c | 1488 | free_page((unsigned long)temp); |
1da177e4 | 1489 | } |
02f1175c | 1490 | |
adc8d746 | 1491 | if (tty->termios.c_cflag & HUPCL) |
4d768200 | 1492 | tty_port_lower_dtr_rts(&info->port); |
1da177e4 | 1493 | |
d13549f8 | 1494 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1495 | info->port.flags &= ~ASYNC_INITIALIZED; |
02f1175c | 1496 | |
9fa1b3b1 | 1497 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1498 | } |
1da177e4 LT |
1499 | |
1500 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1501 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1502 | #endif |
02f1175c | 1503 | } /* shutdown */ |
1da177e4 LT |
1504 | |
1505 | /* | |
1506 | * ------------------------------------------------------------ | |
1507 | * cy_open() and friends | |
1508 | * ------------------------------------------------------------ | |
1509 | */ | |
1510 | ||
1da177e4 LT |
1511 | /* |
1512 | * This routine is called whenever a serial port is opened. It | |
1513 | * performs the serial-specific initialization for the tty structure. | |
1514 | */ | |
02f1175c | 1515 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1516 | { |
02f1175c | 1517 | struct cyclades_port *info; |
410235fd | 1518 | unsigned int i, line = tty->index; |
65f76a82 | 1519 | int retval; |
1da177e4 | 1520 | |
dd025c0c JS |
1521 | for (i = 0; i < NR_CARDS; i++) |
1522 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1523 | line >= cy_card[i].first_line) | |
1524 | break; | |
1525 | if (i >= NR_CARDS) | |
1526 | return -ENODEV; | |
1527 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1528 | if (info->line < 0) |
02f1175c | 1529 | return -ENODEV; |
1da177e4 | 1530 | |
02f1175c JS |
1531 | /* If the card's firmware hasn't been loaded, |
1532 | treat it as absent from the system. This | |
1533 | will make the user pay attention. | |
1534 | */ | |
2693f485 | 1535 | if (cy_is_Z(info->card)) { |
875b206b | 1536 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1537 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1538 | ||
2693f485 JS |
1539 | if (!cyz_is_loaded(cinfo)) { |
1540 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1541 | readl(&firm_id->signature) == |
1542 | ZFIRM_HLT) { | |
21719191 JS |
1543 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1544 | "need an external power supply for " | |
1545 | "this number of ports.\nFirmware " | |
1546 | "halted.\n"); | |
02f1175c | 1547 | } else { |
21719191 JS |
1548 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1549 | "yet loaded\n"); | |
02f1175c JS |
1550 | } |
1551 | return -ENODEV; | |
1552 | } | |
1553 | #ifdef CONFIG_CYZ_INTR | |
1554 | else { | |
1555 | /* In case this Z board is operating in interrupt mode, its | |
1556 | interrupts should be enabled as soon as the first open | |
1557 | happens to one of its ports. */ | |
1558 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1559 | u16 intr; |
02f1175c | 1560 | |
02f1175c | 1561 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1562 | intr = readw(&cinfo->ctl_addr.p9060-> |
1563 | intr_ctrl_stat) | 0x0900; | |
1564 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1565 | intr_ctrl_stat, intr); | |
02f1175c JS |
1566 | /* Enable interrupts on the FW */ |
1567 | retval = cyz_issue_cmd(cinfo, 0, | |
1568 | C_CM_IRQ_ENBL, 0L); | |
1569 | if (retval != 0) { | |
21719191 JS |
1570 | printk(KERN_ERR "cyc:IRQ enable retval " |
1571 | "was %x\n", retval); | |
02f1175c | 1572 | } |
02f1175c JS |
1573 | cinfo->intr_enabled = 1; |
1574 | } | |
1da177e4 | 1575 | } |
02f1175c JS |
1576 | #endif /* CONFIG_CYZ_INTR */ |
1577 | /* Make sure this Z port really exists in hardware */ | |
1578 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1579 | return -ENODEV; | |
1da177e4 | 1580 | } |
1da177e4 | 1581 | #ifdef CY_DEBUG_OTHER |
21719191 | 1582 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1583 | #endif |
02f1175c | 1584 | tty->driver_data = info; |
15ed6cc0 | 1585 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1586 | return -ENODEV; |
15ed6cc0 | 1587 | |
1da177e4 | 1588 | #ifdef CY_DEBUG_OPEN |
21719191 | 1589 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1590 | info->port.count); |
1da177e4 | 1591 | #endif |
77451e53 | 1592 | info->port.count++; |
1da177e4 | 1593 | #ifdef CY_DEBUG_COUNT |
21719191 | 1594 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1595 | current->pid, info->port.count); |
1da177e4 | 1596 | #endif |
1da177e4 | 1597 | |
02f1175c JS |
1598 | /* |
1599 | * If the port is the middle of closing, bail out now | |
1600 | */ | |
77451e53 | 1601 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
89c8d91e | 1602 | wait_event_interruptible_tty(tty, info->port.close_wait, |
77451e53 AC |
1603 | !(info->port.flags & ASYNC_CLOSING)); |
1604 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
02f1175c | 1605 | } |
1da177e4 | 1606 | |
02f1175c JS |
1607 | /* |
1608 | * Start up serial port | |
1609 | */ | |
d13549f8 | 1610 | retval = cy_startup(info, tty); |
15ed6cc0 | 1611 | if (retval) |
02f1175c | 1612 | return retval; |
1da177e4 | 1613 | |
f0737579 | 1614 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1615 | if (retval) { |
1da177e4 | 1616 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1617 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1618 | "with %d\n", retval); | |
1da177e4 | 1619 | #endif |
02f1175c JS |
1620 | return retval; |
1621 | } | |
1da177e4 | 1622 | |
02f1175c | 1623 | info->throttle = 0; |
d13549f8 | 1624 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1625 | |
02f1175c | 1626 | #ifdef CY_DEBUG_OPEN |
21719191 | 1627 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1628 | #endif |
1629 | return 0; | |
1630 | } /* cy_open */ | |
1da177e4 LT |
1631 | |
1632 | /* | |
1633 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1634 | */ | |
02f1175c | 1635 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1636 | { |
875b206b | 1637 | struct cyclades_card *card; |
cab9bdd1 | 1638 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1639 | unsigned long orig_jiffies; |
1640 | int char_time; | |
1641 | ||
1642 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1643 | return; | |
1644 | ||
1645 | if (info->xmit_fifo_size == 0) | |
1646 | return; /* Just in case.... */ | |
1da177e4 | 1647 | |
02f1175c JS |
1648 | orig_jiffies = jiffies; |
1649 | /* | |
1650 | * Set the check interval to be 1/5 of the estimated time to | |
1651 | * send a single character, and make it at least 1. The check | |
1652 | * interval should also be less than the timeout. | |
1653 | * | |
1654 | * Note: we have to use pretty tight timings here to satisfy | |
1655 | * the NIST-PCTS. | |
1656 | */ | |
1657 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1658 | char_time = char_time / 5; | |
1659 | if (char_time <= 0) | |
1660 | char_time = 1; | |
1661 | if (timeout < 0) | |
1662 | timeout = 0; | |
1663 | if (timeout) | |
1664 | char_time = min(char_time, timeout); | |
1665 | /* | |
1666 | * If the transmitter hasn't cleared in twice the approximate | |
1667 | * amount of time to send the entire FIFO, it probably won't | |
1668 | * ever clear. This assumes the UART isn't doing flow | |
1669 | * control, which is currently the case. Hence, if it ever | |
1670 | * takes longer than info->timeout, this is probably due to a | |
1671 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1672 | * 2*info->timeout. | |
1673 | */ | |
1674 | if (!timeout || timeout > 2 * info->timeout) | |
1675 | timeout = 2 * info->timeout; | |
8bab534b | 1676 | |
02f1175c | 1677 | card = info->card; |
2693f485 | 1678 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1679 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
02f1175c JS |
1680 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1681 | break; | |
1682 | if (timeout && time_after(jiffies, orig_jiffies + | |
1683 | timeout)) | |
1684 | break; | |
1685 | } | |
1da177e4 | 1686 | } |
02f1175c JS |
1687 | /* Run one more char cycle */ |
1688 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 LT |
1689 | } |
1690 | ||
978e595f AC |
1691 | static void cy_flush_buffer(struct tty_struct *tty) |
1692 | { | |
1693 | struct cyclades_port *info = tty->driver_data; | |
1694 | struct cyclades_card *card; | |
1695 | int channel, retval; | |
1696 | unsigned long flags; | |
1697 | ||
1698 | #ifdef CY_DEBUG_IO | |
1699 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1700 | #endif | |
1701 | ||
1702 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1703 | return; | |
1704 | ||
1705 | card = info->card; | |
1706 | channel = info->line - card->first_line; | |
1707 | ||
1708 | spin_lock_irqsave(&card->card_lock, flags); | |
1709 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1710 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1711 | ||
2693f485 | 1712 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1713 | buffers as well */ |
1714 | spin_lock_irqsave(&card->card_lock, flags); | |
1715 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1716 | if (retval != 0) { | |
1717 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1718 | "was %x\n", info->line, retval); | |
1719 | } | |
1720 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1721 | } | |
1722 | tty_wakeup(tty); | |
1723 | } /* cy_flush_buffer */ | |
1724 | ||
1725 | ||
e936ffd5 | 1726 | static void cy_do_close(struct tty_port *port) |
1da177e4 | 1727 | { |
e936ffd5 AC |
1728 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
1729 | port); | |
9fa1b3b1 | 1730 | struct cyclades_card *card; |
02f1175c | 1731 | unsigned long flags; |
3aeea5b9 | 1732 | int channel; |
1da177e4 | 1733 | |
9fa1b3b1 | 1734 | card = info->card; |
3aeea5b9 | 1735 | channel = info->line - card->first_line; |
9fa1b3b1 | 1736 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1737 | |
2693f485 | 1738 | if (!cy_is_Z(card)) { |
02f1175c | 1739 | /* Stop accepting input */ |
3aeea5b9 JS |
1740 | cyy_writeb(info, CyCAR, channel & 0x03); |
1741 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
77451e53 | 1742 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
1743 | /* Waiting for on-board buffers to be empty before |
1744 | closing the port */ | |
9fa1b3b1 | 1745 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 | 1746 | cy_wait_until_sent(port->tty, info->timeout); |
9fa1b3b1 | 1747 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1748 | } |
1749 | } else { | |
1750 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1751 | /* Waiting for on-board buffers to be empty before closing |
1752 | the port */ | |
f0eefdc3 | 1753 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1754 | int retval; |
1755 | ||
f0eefdc3 | 1756 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1757 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1758 | if (retval != 0) { |
21719191 JS |
1759 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1760 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1761 | } |
9fa1b3b1 | 1762 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1763 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1764 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1765 | } |
1da177e4 | 1766 | #endif |
02f1175c | 1767 | } |
9fa1b3b1 | 1768 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 AC |
1769 | cy_shutdown(info, port->tty); |
1770 | } | |
1da177e4 | 1771 | |
e936ffd5 AC |
1772 | /* |
1773 | * This routine is called when a particular tty device is closed. | |
1774 | */ | |
1775 | static void cy_close(struct tty_struct *tty, struct file *filp) | |
1776 | { | |
1777 | struct cyclades_port *info = tty->driver_data; | |
1778 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) | |
1779 | return; | |
1780 | tty_port_close(&info->port, tty, filp); | |
02f1175c | 1781 | } /* cy_close */ |
1da177e4 LT |
1782 | |
1783 | /* This routine gets called when tty_write has put something into | |
1784 | * the write_queue. The characters may come from user space or | |
1785 | * kernel space. | |
1786 | * | |
1787 | * This routine will return the number of characters actually | |
1788 | * accepted for writing. | |
1789 | * | |
1790 | * If the port is not already transmitting stuff, start it off by | |
1791 | * enabling interrupts. The interrupt service routine will then | |
1792 | * ensure that the characters are sent. | |
1793 | * If the port is already active, there is no need to kick it. | |
1794 | * | |
1795 | */ | |
02f1175c | 1796 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1797 | { |
cab9bdd1 | 1798 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1799 | unsigned long flags; |
1800 | int c, ret = 0; | |
1da177e4 LT |
1801 | |
1802 | #ifdef CY_DEBUG_IO | |
21719191 | 1803 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1804 | #endif |
1805 | ||
15ed6cc0 | 1806 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1807 | return 0; |
1da177e4 | 1808 | |
77451e53 | 1809 | if (!info->port.xmit_buf) |
02f1175c | 1810 | return 0; |
1da177e4 | 1811 | |
9fa1b3b1 | 1812 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1813 | while (1) { |
1a4e2351 HH |
1814 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1815 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1816 | |
1817 | if (c <= 0) | |
1818 | break; | |
1819 | ||
77451e53 | 1820 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1821 | info->xmit_head = (info->xmit_head + c) & |
1822 | (SERIAL_XMIT_SIZE - 1); | |
1823 | info->xmit_cnt += c; | |
1824 | buf += c; | |
1825 | count -= c; | |
1826 | ret += c; | |
1827 | } | |
9fa1b3b1 | 1828 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1829 | |
1830 | info->idle_stats.xmit_bytes += ret; | |
1831 | info->idle_stats.xmit_idle = jiffies; | |
1832 | ||
15ed6cc0 | 1833 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1834 | start_xmit(info); |
15ed6cc0 | 1835 | |
02f1175c JS |
1836 | return ret; |
1837 | } /* cy_write */ | |
1da177e4 LT |
1838 | |
1839 | /* | |
1840 | * This routine is called by the kernel to write a single | |
1841 | * character to the tty device. If the kernel uses this routine, | |
1842 | * it must call the flush_chars() routine (if defined) when it is | |
1843 | * done stuffing characters into the driver. If there is no room | |
1844 | * in the queue, the character is ignored. | |
1845 | */ | |
76b25a55 | 1846 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1847 | { |
cab9bdd1 | 1848 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1849 | unsigned long flags; |
1da177e4 LT |
1850 | |
1851 | #ifdef CY_DEBUG_IO | |
21719191 | 1852 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1853 | #endif |
1854 | ||
02f1175c | 1855 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1856 | return 0; |
1da177e4 | 1857 | |
77451e53 | 1858 | if (!info->port.xmit_buf) |
76b25a55 | 1859 | return 0; |
1da177e4 | 1860 | |
9fa1b3b1 | 1861 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1862 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1863 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1864 | return 0; |
02f1175c | 1865 | } |
1da177e4 | 1866 | |
77451e53 | 1867 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1868 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1869 | info->xmit_cnt++; | |
1da177e4 LT |
1870 | info->idle_stats.xmit_bytes++; |
1871 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1872 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1873 | return 1; |
02f1175c | 1874 | } /* cy_put_char */ |
1da177e4 LT |
1875 | |
1876 | /* | |
1877 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1878 | * series of characters to the tty device using put_char(). |
1da177e4 | 1879 | */ |
02f1175c | 1880 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1881 | { |
cab9bdd1 | 1882 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1883 | |
1da177e4 | 1884 | #ifdef CY_DEBUG_IO |
21719191 | 1885 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1886 | #endif |
1887 | ||
02f1175c JS |
1888 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1889 | return; | |
1da177e4 | 1890 | |
02f1175c | 1891 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1892 | !info->port.xmit_buf) |
02f1175c | 1893 | return; |
1da177e4 | 1894 | |
02f1175c JS |
1895 | start_xmit(info); |
1896 | } /* cy_flush_chars */ | |
1da177e4 LT |
1897 | |
1898 | /* | |
1899 | * This routine returns the numbers of characters the tty driver | |
1900 | * will accept for queuing to be written. This number is subject | |
1901 | * to change as output buffers get emptied, or if the output flow | |
1902 | * control is activated. | |
1903 | */ | |
02f1175c | 1904 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1905 | { |
cab9bdd1 | 1906 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1907 | int ret; |
1908 | ||
1da177e4 | 1909 | #ifdef CY_DEBUG_IO |
21719191 | 1910 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1911 | #endif |
1912 | ||
02f1175c JS |
1913 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1914 | return 0; | |
1915 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1916 | if (ret < 0) | |
1917 | ret = 0; | |
1918 | return ret; | |
1919 | } /* cy_write_room */ | |
1da177e4 | 1920 | |
02f1175c | 1921 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1922 | { |
cab9bdd1 | 1923 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1924 | |
02f1175c JS |
1925 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1926 | return 0; | |
1927 | ||
1da177e4 | 1928 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1929 | if (!cy_is_Z(info->card)) { |
02f1175c | 1930 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1931 | #ifdef CY_DEBUG_IO |
21719191 JS |
1932 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1933 | info->line, info->xmit_cnt); | |
1da177e4 | 1934 | #endif |
02f1175c | 1935 | return info->xmit_cnt; |
1da177e4 | 1936 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1937 | } else { |
f0eefdc3 | 1938 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1939 | int char_count; |
ad39c300 | 1940 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1941 | |
db05c3b1 JS |
1942 | tx_get = readl(&buf_ctrl->tx_get); |
1943 | tx_put = readl(&buf_ctrl->tx_put); | |
1944 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1945 | if (tx_put >= tx_get) |
1946 | char_count = tx_put - tx_get; | |
1947 | else | |
1948 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1949 | #ifdef CY_DEBUG_IO |
21719191 JS |
1950 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1951 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1952 | #endif |
096dcfce | 1953 | return info->xmit_cnt + char_count; |
02f1175c JS |
1954 | } |
1955 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1956 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1957 | |
1958 | /* | |
1959 | * ------------------------------------------------------------ | |
1960 | * cy_ioctl() and friends | |
1961 | * ------------------------------------------------------------ | |
1962 | */ | |
1963 | ||
1a86b5e3 | 1964 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1965 | { |
02f1175c | 1966 | int co, co_val, bpr; |
1a86b5e3 | 1967 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 1968 | 25000000); |
1da177e4 | 1969 | |
02f1175c JS |
1970 | if (baud == 0) { |
1971 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
1972 | return; | |
1973 | } | |
1da177e4 | 1974 | |
02f1175c JS |
1975 | /* determine which prescaler to use */ |
1976 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
1977 | if (cy_clock / co_val / baud > 63) | |
1978 | break; | |
1979 | } | |
1da177e4 | 1980 | |
02f1175c JS |
1981 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
1982 | if (bpr > 255) | |
1983 | bpr = 255; | |
1da177e4 | 1984 | |
02f1175c JS |
1985 | info->tbpr = info->rbpr = bpr; |
1986 | info->tco = info->rco = co; | |
1da177e4 LT |
1987 | } |
1988 | ||
1989 | /* | |
1990 | * This routine finds or computes the various line characteristics. | |
1991 | * It used to be called config_setup | |
1992 | */ | |
d13549f8 | 1993 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1994 | { |
875b206b | 1995 | struct cyclades_card *card; |
02f1175c | 1996 | unsigned long flags; |
3aeea5b9 | 1997 | int channel; |
02f1175c | 1998 | unsigned cflag, iflag; |
02f1175c JS |
1999 | int baud, baud_rate = 0; |
2000 | int i; | |
2001 | ||
15ed6cc0 | 2002 | if (info->line == -1) |
02f1175c | 2003 | return; |
15ed6cc0 | 2004 | |
adc8d746 AC |
2005 | cflag = tty->termios.c_cflag; |
2006 | iflag = tty->termios.c_iflag; | |
1da177e4 | 2007 | |
02f1175c JS |
2008 | /* |
2009 | * Set up the tty->alt_speed kludge | |
2010 | */ | |
d13549f8 JS |
2011 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
2012 | tty->alt_speed = 57600; | |
2013 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2014 | tty->alt_speed = 115200; | |
2015 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2016 | tty->alt_speed = 230400; | |
2017 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2018 | tty->alt_speed = 460800; | |
02f1175c JS |
2019 | |
2020 | card = info->card; | |
875b206b | 2021 | channel = info->line - card->first_line; |
02f1175c | 2022 | |
2693f485 | 2023 | if (!cy_is_Z(card)) { |
46fb7825 JS |
2024 | u32 cflags; |
2025 | ||
02f1175c | 2026 | /* baud rate */ |
d13549f8 | 2027 | baud = tty_get_baud_rate(tty); |
77451e53 | 2028 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2029 | ASYNC_SPD_CUST) { |
2030 | if (info->custom_divisor) | |
2031 | baud_rate = info->baud / info->custom_divisor; | |
2032 | else | |
2033 | baud_rate = info->baud; | |
2034 | } else if (baud > CD1400_MAX_SPEED) { | |
2035 | baud = CD1400_MAX_SPEED; | |
2036 | } | |
2037 | /* find the baud index */ | |
2038 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2039 | if (baud == baud_table[i]) |
02f1175c | 2040 | break; |
02f1175c | 2041 | } |
15ed6cc0 | 2042 | if (i == 20) |
02f1175c | 2043 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2044 | |
77451e53 | 2045 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2046 | ASYNC_SPD_CUST) { |
2047 | cyy_baud_calc(info, baud_rate); | |
2048 | } else { | |
2049 | if (info->chip_rev >= CD1400_REV_J) { | |
2050 | /* It is a CD1400 rev. J or later */ | |
2051 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2052 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2053 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2054 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2055 | } else { | |
2056 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2057 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2058 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2059 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2060 | } | |
2061 | } | |
2062 | if (baud_table[i] == 134) { | |
2063 | /* get it right for 134.5 baud */ | |
2064 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2065 | 2; | |
77451e53 | 2066 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2067 | ASYNC_SPD_CUST) { |
2068 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2069 | baud_rate) + 2; | |
2070 | } else if (baud_table[i]) { | |
2071 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2072 | baud_table[i]) + 2; | |
2073 | /* this needs to be propagated into the card info */ | |
2074 | } else { | |
2075 | info->timeout = 0; | |
2076 | } | |
2077 | /* By tradition (is it a standard?) a baud rate of zero | |
2078 | implies the line should be/has been closed. A bit | |
2079 | later in this routine such a test is performed. */ | |
2080 | ||
2081 | /* byte size and parity */ | |
2082 | info->cor5 = 0; | |
2083 | info->cor4 = 0; | |
2084 | /* receive threshold */ | |
2085 | info->cor3 = (info->default_threshold ? | |
2086 | info->default_threshold : baud_cor3[i]); | |
2087 | info->cor2 = CyETC; | |
2088 | switch (cflag & CSIZE) { | |
2089 | case CS5: | |
2090 | info->cor1 = Cy_5_BITS; | |
2091 | break; | |
2092 | case CS6: | |
2093 | info->cor1 = Cy_6_BITS; | |
2094 | break; | |
2095 | case CS7: | |
2096 | info->cor1 = Cy_7_BITS; | |
2097 | break; | |
2098 | case CS8: | |
2099 | info->cor1 = Cy_8_BITS; | |
2100 | break; | |
2101 | } | |
15ed6cc0 | 2102 | if (cflag & CSTOPB) |
02f1175c | 2103 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2104 | |
02f1175c | 2105 | if (cflag & PARENB) { |
15ed6cc0 | 2106 | if (cflag & PARODD) |
02f1175c | 2107 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2108 | else |
02f1175c | 2109 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2110 | } else |
02f1175c | 2111 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2112 | |
2113 | /* CTS flow control flag */ | |
2114 | if (cflag & CRTSCTS) { | |
77451e53 | 2115 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
2116 | info->cor2 |= CyCtsAE; |
2117 | } else { | |
77451e53 | 2118 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2119 | info->cor2 &= ~CyCtsAE; |
2120 | } | |
2121 | if (cflag & CLOCAL) | |
77451e53 | 2122 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 2123 | else |
77451e53 | 2124 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2125 | |
2126 | /*********************************************** | |
2127 | The hardware option, CyRtsAO, presents RTS when | |
2128 | the chip has characters to send. Since most modems | |
2129 | use RTS as reverse (inbound) flow control, this | |
2130 | option is not used. If inbound flow control is | |
2131 | necessary, DTR can be programmed to provide the | |
2132 | appropriate signals for use with a non-standard | |
2133 | cable. Contact Marcio Saito for details. | |
2134 | ***********************************************/ | |
2135 | ||
02f1175c | 2136 | channel &= 0x03; |
1da177e4 | 2137 | |
9fa1b3b1 | 2138 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2139 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2140 | |
2141 | /* tx and rx baud rate */ | |
2142 | ||
3aeea5b9 JS |
2143 | cyy_writeb(info, CyTCOR, info->tco); |
2144 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2145 | cyy_writeb(info, CyRCOR, info->rco); | |
2146 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2147 | |
2148 | /* set line characteristics according configuration */ | |
2149 | ||
3aeea5b9 JS |
2150 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2151 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2152 | cyy_writeb(info, CyCOR1, info->cor1); | |
2153 | cyy_writeb(info, CyCOR2, info->cor2); | |
2154 | cyy_writeb(info, CyCOR3, info->cor3); | |
2155 | cyy_writeb(info, CyCOR4, info->cor4); | |
2156 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2157 | |
3aeea5b9 JS |
2158 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2159 | CyCOR3ch); | |
02f1175c | 2160 | |
15ed6cc0 | 2161 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2162 | cyy_writeb(info, CyCAR, channel); |
2163 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2164 | (info->default_timeout ? info->default_timeout : 0x02)); |
2165 | /* 10ms rx timeout */ | |
2166 | ||
46fb7825 JS |
2167 | cflags = CyCTS; |
2168 | if (!C_CLOCAL(tty)) | |
2169 | cflags |= CyDSR | CyRI | CyDCD; | |
2170 | /* without modem intr */ | |
2171 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2172 | /* act on 1->0 modem transitions */ | |
2173 | if ((cflag & CRTSCTS) && info->rflow) | |
2174 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2175 | else | |
2176 | cyy_writeb(info, CyMCOR1, cflags); | |
2177 | /* act on 0->1 modem transitions */ | |
2178 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2179 | |
4d768200 JS |
2180 | if (i == 0) /* baud rate is zero, turn off line */ |
2181 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2182 | else | |
2183 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2184 | |
d13549f8 | 2185 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2186 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2187 | |
1da177e4 | 2188 | } else { |
f0eefdc3 | 2189 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2190 | __u32 sw_flow; |
02f1175c | 2191 | int retval; |
1da177e4 | 2192 | |
2693f485 | 2193 | if (!cyz_is_loaded(card)) |
02f1175c | 2194 | return; |
1da177e4 | 2195 | |
02f1175c | 2196 | /* baud rate */ |
d13549f8 | 2197 | baud = tty_get_baud_rate(tty); |
77451e53 | 2198 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2199 | ASYNC_SPD_CUST) { |
2200 | if (info->custom_divisor) | |
2201 | baud_rate = info->baud / info->custom_divisor; | |
2202 | else | |
2203 | baud_rate = info->baud; | |
2204 | } else if (baud > CYZ_MAX_SPEED) { | |
2205 | baud = CYZ_MAX_SPEED; | |
2206 | } | |
2207 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2208 | ||
2209 | if (baud == 134) { | |
2210 | /* get it right for 134.5 baud */ | |
2211 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2212 | 2; | |
77451e53 | 2213 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2214 | ASYNC_SPD_CUST) { |
2215 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2216 | baud_rate) + 2; | |
2217 | } else if (baud) { | |
2218 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2219 | baud) + 2; | |
2220 | /* this needs to be propagated into the card info */ | |
2221 | } else { | |
2222 | info->timeout = 0; | |
2223 | } | |
1da177e4 | 2224 | |
02f1175c JS |
2225 | /* byte size and parity */ |
2226 | switch (cflag & CSIZE) { | |
2227 | case CS5: | |
2228 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2229 | break; | |
2230 | case CS6: | |
2231 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2232 | break; | |
2233 | case CS7: | |
2234 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2235 | break; | |
2236 | case CS8: | |
2237 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2238 | break; | |
2239 | } | |
2240 | if (cflag & CSTOPB) { | |
2241 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2242 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2243 | } else { |
2244 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2245 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2246 | } |
2247 | if (cflag & PARENB) { | |
15ed6cc0 | 2248 | if (cflag & PARODD) |
02f1175c | 2249 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2250 | else |
02f1175c | 2251 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2252 | } else |
02f1175c | 2253 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2254 | |
02f1175c JS |
2255 | /* CTS flow control flag */ |
2256 | if (cflag & CRTSCTS) { | |
2257 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2258 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2259 | } else { |
db05c3b1 JS |
2260 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2261 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2262 | } |
2263 | /* As the HW flow control is done in firmware, the driver | |
2264 | doesn't need to care about it */ | |
77451e53 | 2265 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2266 | |
2267 | /* XON/XOFF/XANY flow control flags */ | |
2268 | sw_flow = 0; | |
2269 | if (iflag & IXON) { | |
2270 | sw_flow |= C_FL_OXX; | |
2271 | if (iflag & IXANY) | |
2272 | sw_flow |= C_FL_OIXANY; | |
2273 | } | |
2274 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2275 | ||
875b206b | 2276 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2277 | if (retval != 0) { |
21719191 JS |
2278 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2279 | "was %x\n", info->line, retval); | |
02f1175c JS |
2280 | } |
2281 | ||
2282 | /* CD sensitivity */ | |
15ed6cc0 | 2283 | if (cflag & CLOCAL) |
77451e53 | 2284 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 2285 | else |
77451e53 | 2286 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 2287 | |
02f1175c JS |
2288 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2289 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2290 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2291 | #ifdef CY_DEBUG_DTR |
21719191 | 2292 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2293 | #endif |
02f1175c JS |
2294 | } else { |
2295 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2296 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2297 | #ifdef CY_DEBUG_DTR |
21719191 | 2298 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2299 | #endif |
02f1175c | 2300 | } |
1da177e4 | 2301 | |
15ed6cc0 | 2302 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2303 | if (retval != 0) { |
21719191 JS |
2304 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2305 | "was %x\n", info->line, retval); | |
02f1175c | 2306 | } |
1da177e4 | 2307 | |
d13549f8 | 2308 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2309 | } |
02f1175c | 2310 | } /* set_line_char */ |
1da177e4 | 2311 | |
6c28181c | 2312 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2313 | struct serial_struct __user *retinfo) |
1da177e4 | 2314 | { |
875b206b | 2315 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2316 | struct serial_struct tmp = { |
2317 | .type = info->type, | |
2318 | .line = info->line, | |
2319 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2320 | cinfo->first_line, | |
2321 | .irq = cinfo->irq, | |
2322 | .flags = info->port.flags, | |
2323 | .close_delay = info->port.close_delay, | |
2324 | .closing_wait = info->port.closing_wait, | |
2325 | .baud_base = info->baud, | |
2326 | .custom_divisor = info->custom_divisor, | |
2327 | .hub6 = 0, /*!!! */ | |
2328 | }; | |
02f1175c | 2329 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2330 | } |
1da177e4 LT |
2331 | |
2332 | static int | |
d13549f8 | 2333 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2334 | struct serial_struct __user *new_info) |
1da177e4 | 2335 | { |
02f1175c | 2336 | struct serial_struct new_serial; |
25c3cdf8 | 2337 | int ret; |
02f1175c JS |
2338 | |
2339 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2340 | return -EFAULT; | |
02f1175c | 2341 | |
25c3cdf8 | 2342 | mutex_lock(&info->port.mutex); |
02f1175c | 2343 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 | 2344 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2345 | new_serial.baud_base != info->baud || |
2346 | (new_serial.flags & ASYNC_FLAGS & | |
2347 | ~ASYNC_USR_MASK) != | |
77451e53 | 2348 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
25c3cdf8 AC |
2349 | { |
2350 | mutex_unlock(&info->port.mutex); | |
02f1175c | 2351 | return -EPERM; |
25c3cdf8 | 2352 | } |
77451e53 | 2353 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2354 | (new_serial.flags & ASYNC_USR_MASK); |
2355 | info->baud = new_serial.baud_base; | |
2356 | info->custom_divisor = new_serial.custom_divisor; | |
2357 | goto check_and_exit; | |
2358 | } | |
2359 | ||
2360 | /* | |
2361 | * OK, past this point, all the error checking has been done. | |
2362 | * At this point, we start making changes..... | |
2363 | */ | |
2364 | ||
2365 | info->baud = new_serial.baud_base; | |
2366 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2367 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2368 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2369 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2370 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2371 | |
2372 | check_and_exit: | |
77451e53 | 2373 | if (info->port.flags & ASYNC_INITIALIZED) { |
d13549f8 | 2374 | cy_set_line_char(info, tty); |
25c3cdf8 | 2375 | ret = 0; |
02f1175c | 2376 | } else { |
25c3cdf8 | 2377 | ret = cy_startup(info, tty); |
02f1175c | 2378 | } |
25c3cdf8 AC |
2379 | mutex_unlock(&info->port.mutex); |
2380 | return ret; | |
02f1175c | 2381 | } /* set_serial_info */ |
1da177e4 LT |
2382 | |
2383 | /* | |
2384 | * get_lsr_info - get line status register info | |
2385 | * | |
2386 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2387 | * is emptied. On bus types like RS485, the transmitter must | |
2388 | * release the bus after transmitting. This must be done when | |
2389 | * the transmit shift register is empty, not be done when the | |
2390 | * transmit holding register is empty. This functionality | |
2391 | * allows an RS485 driver to be written in user space. | |
2392 | */ | |
15ed6cc0 | 2393 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2394 | { |
3aeea5b9 | 2395 | struct cyclades_card *card = info->card; |
02f1175c JS |
2396 | unsigned int result; |
2397 | unsigned long flags; | |
3aeea5b9 | 2398 | u8 status; |
1da177e4 | 2399 | |
2693f485 | 2400 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2401 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2402 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2403 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2404 | result = (status ? 0 : TIOCSER_TEMT); |
2405 | } else { | |
2406 | /* Not supported yet */ | |
2407 | return -EINVAL; | |
2408 | } | |
dbca36ea | 2409 | return put_user(result, value); |
1da177e4 LT |
2410 | } |
2411 | ||
60b33c13 | 2412 | static int cy_tiocmget(struct tty_struct *tty) |
1da177e4 | 2413 | { |
cab9bdd1 | 2414 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2415 | struct cyclades_card *card; |
3aeea5b9 | 2416 | int result; |
02f1175c | 2417 | |
bf9d8929 | 2418 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2419 | return -ENODEV; |
1da177e4 | 2420 | |
02f1175c | 2421 | card = info->card; |
0d348729 | 2422 | |
2693f485 | 2423 | if (!cy_is_Z(card)) { |
0d348729 | 2424 | unsigned long flags; |
3aeea5b9 JS |
2425 | int channel = info->line - card->first_line; |
2426 | u8 status; | |
1da177e4 | 2427 | |
9fa1b3b1 | 2428 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2429 | cyy_writeb(info, CyCAR, channel & 0x03); |
2430 | status = cyy_readb(info, CyMSVR1); | |
2431 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2432 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2433 | |
2434 | if (info->rtsdtr_inv) { | |
2435 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2436 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2437 | } else { | |
2438 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2439 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2440 | } | |
2441 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2442 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2443 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2444 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2445 | } else { |
0d348729 JS |
2446 | u32 lstatus; |
2447 | ||
2448 | if (!cyz_is_loaded(card)) { | |
2449 | result = -ENODEV; | |
2450 | goto end; | |
02f1175c | 2451 | } |
1da177e4 | 2452 | |
0d348729 JS |
2453 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2454 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2455 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2456 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2457 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2458 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2459 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2460 | } |
0d348729 | 2461 | end: |
02f1175c JS |
2462 | return result; |
2463 | } /* cy_tiomget */ | |
1da177e4 LT |
2464 | |
2465 | static int | |
20b9d177 | 2466 | cy_tiocmset(struct tty_struct *tty, |
02f1175c | 2467 | unsigned int set, unsigned int clear) |
1da177e4 | 2468 | { |
cab9bdd1 | 2469 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2470 | struct cyclades_card *card; |
02f1175c | 2471 | unsigned long flags; |
02f1175c | 2472 | |
bf9d8929 | 2473 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2474 | return -ENODEV; |
2475 | ||
2476 | card = info->card; | |
2693f485 | 2477 | if (!cy_is_Z(card)) { |
4d768200 JS |
2478 | spin_lock_irqsave(&card->card_lock, flags); |
2479 | cyy_change_rts_dtr(info, set, clear); | |
2480 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2481 | } else { |
0d348729 JS |
2482 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2483 | int retval, channel = info->line - card->first_line; | |
2484 | u32 rs; | |
2485 | ||
2486 | if (!cyz_is_loaded(card)) | |
2487 | return -ENODEV; | |
2488 | ||
2489 | spin_lock_irqsave(&card->card_lock, flags); | |
2490 | rs = readl(&ch_ctrl->rs_control); | |
2491 | if (set & TIOCM_RTS) | |
2492 | rs |= C_RS_RTS; | |
2493 | if (clear & TIOCM_RTS) | |
2494 | rs &= ~C_RS_RTS; | |
2495 | if (set & TIOCM_DTR) { | |
2496 | rs |= C_RS_DTR; | |
1da177e4 | 2497 | #ifdef CY_DEBUG_DTR |
0d348729 | 2498 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2499 | #endif |
0d348729 JS |
2500 | } |
2501 | if (clear & TIOCM_DTR) { | |
2502 | rs &= ~C_RS_DTR; | |
1da177e4 | 2503 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2504 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2505 | "Z DTR\n"); | |
1da177e4 | 2506 | #endif |
02f1175c | 2507 | } |
0d348729 | 2508 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2509 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2510 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2511 | if (retval != 0) { |
21719191 JS |
2512 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2513 | "was %x\n", info->line, retval); | |
02f1175c | 2514 | } |
1da177e4 | 2515 | } |
02f1175c | 2516 | return 0; |
0d348729 | 2517 | } |
1da177e4 LT |
2518 | |
2519 | /* | |
2520 | * cy_break() --- routine which turns the break handling on or off | |
2521 | */ | |
9e98966c | 2522 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2523 | { |
cab9bdd1 | 2524 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2525 | struct cyclades_card *card; |
02f1175c | 2526 | unsigned long flags; |
9e98966c | 2527 | int retval = 0; |
1da177e4 | 2528 | |
02f1175c | 2529 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2530 | return -EINVAL; |
1da177e4 | 2531 | |
9fa1b3b1 JS |
2532 | card = info->card; |
2533 | ||
2534 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2535 | if (!cy_is_Z(card)) { |
02f1175c JS |
2536 | /* Let the transmit ISR take care of this (since it |
2537 | requires stuffing characters into the output stream). | |
2538 | */ | |
2539 | if (break_state == -1) { | |
2540 | if (!info->breakon) { | |
2541 | info->breakon = 1; | |
2542 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2543 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2544 | start_xmit(info); |
9fa1b3b1 | 2545 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2546 | } |
2547 | } | |
2548 | } else { | |
2549 | if (!info->breakoff) { | |
2550 | info->breakoff = 1; | |
2551 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2552 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2553 | start_xmit(info); |
9fa1b3b1 | 2554 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2555 | } |
2556 | } | |
1da177e4 | 2557 | } |
1da177e4 | 2558 | } else { |
02f1175c | 2559 | if (break_state == -1) { |
9fa1b3b1 JS |
2560 | retval = cyz_issue_cmd(card, |
2561 | info->line - card->first_line, | |
02f1175c JS |
2562 | C_CM_SET_BREAK, 0L); |
2563 | if (retval != 0) { | |
21719191 JS |
2564 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2565 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2566 | } |
2567 | } else { | |
9fa1b3b1 JS |
2568 | retval = cyz_issue_cmd(card, |
2569 | info->line - card->first_line, | |
02f1175c JS |
2570 | C_CM_CLR_BREAK, 0L); |
2571 | if (retval != 0) { | |
21719191 JS |
2572 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2573 | "on ttyC%d was %x\n", info->line, | |
2574 | retval); | |
02f1175c | 2575 | } |
1da177e4 | 2576 | } |
1da177e4 | 2577 | } |
9fa1b3b1 | 2578 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2579 | return retval; |
02f1175c | 2580 | } /* cy_break */ |
1da177e4 | 2581 | |
02f1175c | 2582 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2583 | { |
3aeea5b9 | 2584 | struct cyclades_card *card = info->card; |
02f1175c | 2585 | unsigned long flags; |
1da177e4 | 2586 | |
2693f485 | 2587 | if (!cy_is_Z(card)) { |
02f1175c JS |
2588 | info->cor3 &= ~CyREC_FIFO; |
2589 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2590 | |
9fa1b3b1 | 2591 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2592 | cyy_writeb(info, CyCOR3, info->cor3); |
2593 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2594 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2595 | } |
2596 | return 0; | |
2597 | } /* set_threshold */ | |
1da177e4 | 2598 | |
15ed6cc0 AC |
2599 | static int get_threshold(struct cyclades_port *info, |
2600 | unsigned long __user *value) | |
1da177e4 | 2601 | { |
3aeea5b9 | 2602 | struct cyclades_card *card = info->card; |
1da177e4 | 2603 | |
2693f485 | 2604 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2605 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2606 | return put_user(tmp, value); |
02f1175c | 2607 | } |
f7429034 | 2608 | return 0; |
02f1175c | 2609 | } /* get_threshold */ |
1da177e4 | 2610 | |
02f1175c | 2611 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2612 | { |
3aeea5b9 | 2613 | struct cyclades_card *card = info->card; |
02f1175c | 2614 | unsigned long flags; |
1da177e4 | 2615 | |
2693f485 | 2616 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2617 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2618 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2619 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2620 | } |
2621 | return 0; | |
2622 | } /* set_timeout */ | |
1da177e4 | 2623 | |
15ed6cc0 AC |
2624 | static int get_timeout(struct cyclades_port *info, |
2625 | unsigned long __user *value) | |
1da177e4 | 2626 | { |
3aeea5b9 | 2627 | struct cyclades_card *card = info->card; |
1da177e4 | 2628 | |
2693f485 | 2629 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2630 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2631 | return put_user(tmp, value); |
02f1175c | 2632 | } |
f7429034 | 2633 | return 0; |
02f1175c | 2634 | } /* get_timeout */ |
1da177e4 | 2635 | |
6c28181c JS |
2636 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2637 | struct cyclades_icount *cprev) | |
1da177e4 | 2638 | { |
6c28181c JS |
2639 | struct cyclades_icount cnow; |
2640 | unsigned long flags; | |
2641 | int ret; | |
1da177e4 | 2642 | |
6c28181c JS |
2643 | spin_lock_irqsave(&info->card->card_lock, flags); |
2644 | cnow = info->icount; /* atomic copy */ | |
2645 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2646 | ||
2647 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2648 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2649 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2650 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2651 | ||
2652 | *cprev = cnow; | |
2653 | ||
2654 | return ret; | |
2655 | } | |
1da177e4 LT |
2656 | |
2657 | /* | |
2658 | * This routine allows the tty driver to implement device- | |
2659 | * specific ioctl's. If the ioctl number passed in cmd is | |
2660 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2661 | */ | |
2662 | static int | |
6caa76b7 | 2663 | cy_ioctl(struct tty_struct *tty, |
02f1175c | 2664 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2665 | { |
cab9bdd1 | 2666 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2667 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2668 | int ret_val = 0; |
2669 | unsigned long flags; | |
2670 | void __user *argp = (void __user *)arg; | |
2671 | ||
2672 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2673 | return -ENODEV; | |
1da177e4 LT |
2674 | |
2675 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2676 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2677 | info->line, cmd, arg); | |
1da177e4 LT |
2678 | #endif |
2679 | ||
02f1175c JS |
2680 | switch (cmd) { |
2681 | case CYGETMON: | |
6c28181c JS |
2682 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2683 | ret_val = -EFAULT; | |
2684 | break; | |
2685 | } | |
2686 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2687 | break; |
2688 | case CYGETTHRESH: | |
2689 | ret_val = get_threshold(info, argp); | |
2690 | break; | |
2691 | case CYSETTHRESH: | |
2692 | ret_val = set_threshold(info, arg); | |
2693 | break; | |
2694 | case CYGETDEFTHRESH: | |
6c28181c JS |
2695 | ret_val = put_user(info->default_threshold, |
2696 | (unsigned long __user *)argp); | |
02f1175c JS |
2697 | break; |
2698 | case CYSETDEFTHRESH: | |
6c28181c | 2699 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2700 | break; |
2701 | case CYGETTIMEOUT: | |
2702 | ret_val = get_timeout(info, argp); | |
2703 | break; | |
2704 | case CYSETTIMEOUT: | |
2705 | ret_val = set_timeout(info, arg); | |
2706 | break; | |
2707 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2708 | ret_val = put_user(info->default_timeout, |
2709 | (unsigned long __user *)argp); | |
02f1175c JS |
2710 | break; |
2711 | case CYSETDEFTIMEOUT: | |
6c28181c | 2712 | info->default_timeout = arg & 0xff; |
02f1175c | 2713 | break; |
1da177e4 | 2714 | case CYSETRFLOW: |
02f1175c | 2715 | info->rflow = (int)arg; |
02f1175c | 2716 | break; |
1da177e4 | 2717 | case CYGETRFLOW: |
02f1175c JS |
2718 | ret_val = info->rflow; |
2719 | break; | |
1da177e4 | 2720 | case CYSETRTSDTR_INV: |
02f1175c | 2721 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2722 | break; |
1da177e4 | 2723 | case CYGETRTSDTR_INV: |
02f1175c JS |
2724 | ret_val = info->rtsdtr_inv; |
2725 | break; | |
1da177e4 | 2726 | case CYGETCD1400VER: |
02f1175c JS |
2727 | ret_val = info->chip_rev; |
2728 | break; | |
1da177e4 LT |
2729 | #ifndef CONFIG_CYZ_INTR |
2730 | case CYZSETPOLLCYCLE: | |
02f1175c | 2731 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2732 | break; |
1da177e4 | 2733 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2734 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2735 | break; | |
2736 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2737 | case CYSETWAIT: |
44b7d1b3 | 2738 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2739 | break; |
1da177e4 | 2740 | case CYGETWAIT: |
44b7d1b3 | 2741 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2742 | break; |
2743 | case TIOCGSERIAL: | |
6c28181c | 2744 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2745 | break; |
2746 | case TIOCSSERIAL: | |
d13549f8 | 2747 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2748 | break; |
2749 | case TIOCSERGETLSR: /* Get line status register */ | |
2750 | ret_val = get_lsr_info(info, argp); | |
2751 | break; | |
2752 | /* | |
2753 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2754 | * - mask passed in arg for lines of interest | |
2755 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2756 | * Caller should use TIOCGICOUNT to see which one it was | |
2757 | */ | |
1da177e4 | 2758 | case TIOCMIWAIT: |
9fa1b3b1 | 2759 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2760 | /* note the counters on entry */ |
2c7fea99 | 2761 | cnow = info->icount; |
9fa1b3b1 | 2762 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
bdc04e31 | 2763 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
6c28181c | 2764 | cy_cflags_changed(info, arg, &cnow)); |
2c7fea99 | 2765 | break; |
1da177e4 | 2766 | |
02f1175c JS |
2767 | /* |
2768 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2769 | * Return: write counters to the user passed counter struct | |
2770 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2771 | * RI where only 0->1 is counted. | |
2772 | */ | |
02f1175c JS |
2773 | default: |
2774 | ret_val = -ENOIOCTLCMD; | |
2775 | } | |
1da177e4 LT |
2776 | |
2777 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2778 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2779 | #endif |
02f1175c JS |
2780 | return ret_val; |
2781 | } /* cy_ioctl */ | |
1da177e4 | 2782 | |
0587102c AC |
2783 | static int cy_get_icount(struct tty_struct *tty, |
2784 | struct serial_icounter_struct *sic) | |
2785 | { | |
2786 | struct cyclades_port *info = tty->driver_data; | |
2787 | struct cyclades_icount cnow; /* Used to snapshot */ | |
2788 | unsigned long flags; | |
2789 | ||
2790 | spin_lock_irqsave(&info->card->card_lock, flags); | |
2791 | cnow = info->icount; | |
2792 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2793 | ||
2794 | sic->cts = cnow.cts; | |
2795 | sic->dsr = cnow.dsr; | |
2796 | sic->rng = cnow.rng; | |
2797 | sic->dcd = cnow.dcd; | |
2798 | sic->rx = cnow.rx; | |
2799 | sic->tx = cnow.tx; | |
2800 | sic->frame = cnow.frame; | |
2801 | sic->overrun = cnow.overrun; | |
2802 | sic->parity = cnow.parity; | |
2803 | sic->brk = cnow.brk; | |
2804 | sic->buf_overrun = cnow.buf_overrun; | |
2805 | return 0; | |
2806 | } | |
2807 | ||
1da177e4 LT |
2808 | /* |
2809 | * This routine allows the tty driver to be notified when | |
2810 | * device's termios settings have changed. Note that a | |
2811 | * well-designed tty driver should be prepared to accept the case | |
2812 | * where old == NULL, and try to do something rational. | |
2813 | */ | |
02f1175c | 2814 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2815 | { |
cab9bdd1 | 2816 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2817 | |
2818 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2819 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2820 | #endif |
2821 | ||
d13549f8 | 2822 | cy_set_line_char(info, tty); |
02f1175c JS |
2823 | |
2824 | if ((old_termios->c_cflag & CRTSCTS) && | |
adc8d746 | 2825 | !(tty->termios.c_cflag & CRTSCTS)) { |
02f1175c JS |
2826 | tty->hw_stopped = 0; |
2827 | cy_start(tty); | |
2828 | } | |
1da177e4 | 2829 | #if 0 |
02f1175c JS |
2830 | /* |
2831 | * No need to wake up processes in open wait, since they | |
2832 | * sample the CLOCAL flag once, and don't recheck it. | |
2833 | * XXX It's not clear whether the current behavior is correct | |
2834 | * or not. Hence, this may change..... | |
2835 | */ | |
2836 | if (!(old_termios->c_cflag & CLOCAL) && | |
adc8d746 | 2837 | (tty->termios.c_cflag & CLOCAL)) |
77451e53 | 2838 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2839 | #endif |
02f1175c | 2840 | } /* cy_set_termios */ |
1da177e4 LT |
2841 | |
2842 | /* This function is used to send a high-priority XON/XOFF character to | |
2843 | the device. | |
2844 | */ | |
02f1175c | 2845 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2846 | { |
cab9bdd1 | 2847 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2848 | struct cyclades_card *card; |
2849 | int channel; | |
1da177e4 | 2850 | |
02f1175c | 2851 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2852 | return; |
2853 | ||
02f1175c | 2854 | info->x_char = ch; |
1da177e4 LT |
2855 | |
2856 | if (ch) | |
02f1175c | 2857 | cy_start(tty); |
1da177e4 LT |
2858 | |
2859 | card = info->card; | |
875b206b | 2860 | channel = info->line - card->first_line; |
1da177e4 | 2861 | |
2693f485 | 2862 | if (cy_is_Z(card)) { |
02f1175c | 2863 | if (ch == STOP_CHAR(tty)) |
875b206b | 2864 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2865 | else if (ch == START_CHAR(tty)) |
875b206b | 2866 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2867 | } |
2868 | } | |
2869 | ||
2870 | /* This routine is called by the upper-layer tty layer to signal | |
2871 | that incoming characters should be throttled because the input | |
2872 | buffers are close to full. | |
2873 | */ | |
02f1175c | 2874 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2875 | { |
cab9bdd1 | 2876 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2877 | struct cyclades_card *card; |
02f1175c | 2878 | unsigned long flags; |
1da177e4 LT |
2879 | |
2880 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 2881 | char buf[64]; |
1da177e4 | 2882 | |
21719191 | 2883 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 2884 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
2885 | #endif |
2886 | ||
15ed6cc0 | 2887 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2888 | return; |
02f1175c JS |
2889 | |
2890 | card = info->card; | |
2891 | ||
2892 | if (I_IXOFF(tty)) { | |
2693f485 | 2893 | if (!cy_is_Z(card)) |
02f1175c JS |
2894 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2895 | else | |
2896 | info->throttle = 1; | |
2897 | } | |
1da177e4 | 2898 | |
adc8d746 | 2899 | if (tty->termios.c_cflag & CRTSCTS) { |
2693f485 | 2900 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2901 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2902 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2903 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2904 | } else { |
2905 | info->throttle = 1; | |
2906 | } | |
2907 | } | |
02f1175c | 2908 | } /* cy_throttle */ |
1da177e4 LT |
2909 | |
2910 | /* | |
2911 | * This routine notifies the tty driver that it should signal | |
2912 | * that characters can now be sent to the tty without fear of | |
2913 | * overrunning the input buffers of the line disciplines. | |
2914 | */ | |
02f1175c | 2915 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2916 | { |
cab9bdd1 | 2917 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2918 | struct cyclades_card *card; |
02f1175c | 2919 | unsigned long flags; |
1da177e4 LT |
2920 | |
2921 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
2922 | char buf[64]; |
2923 | ||
21719191 | 2924 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
15ed6cc0 | 2925 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
2926 | #endif |
2927 | ||
15ed6cc0 | 2928 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2929 | return; |
1da177e4 | 2930 | |
02f1175c JS |
2931 | if (I_IXOFF(tty)) { |
2932 | if (info->x_char) | |
2933 | info->x_char = 0; | |
2934 | else | |
2935 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2936 | } |
1da177e4 | 2937 | |
adc8d746 | 2938 | if (tty->termios.c_cflag & CRTSCTS) { |
02f1175c | 2939 | card = info->card; |
2693f485 | 2940 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2941 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2942 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2943 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2944 | } else { |
2945 | info->throttle = 0; | |
2946 | } | |
2947 | } | |
02f1175c | 2948 | } /* cy_unthrottle */ |
1da177e4 LT |
2949 | |
2950 | /* cy_start and cy_stop provide software output flow control as a | |
2951 | function of XON/XOFF, software CTS, and other such stuff. | |
2952 | */ | |
02f1175c | 2953 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2954 | { |
02f1175c | 2955 | struct cyclades_card *cinfo; |
cab9bdd1 | 2956 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2957 | int channel; |
02f1175c | 2958 | unsigned long flags; |
1da177e4 LT |
2959 | |
2960 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2961 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2962 | #endif |
2963 | ||
02f1175c JS |
2964 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2965 | return; | |
1da177e4 | 2966 | |
875b206b | 2967 | cinfo = info->card; |
02f1175c | 2968 | channel = info->line - cinfo->first_line; |
2693f485 | 2969 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2970 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2971 | cyy_writeb(info, CyCAR, channel & 0x03); |
2972 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 2973 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2974 | } |
02f1175c | 2975 | } /* cy_stop */ |
1da177e4 | 2976 | |
02f1175c | 2977 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 2978 | { |
02f1175c | 2979 | struct cyclades_card *cinfo; |
cab9bdd1 | 2980 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2981 | int channel; |
02f1175c | 2982 | unsigned long flags; |
1da177e4 LT |
2983 | |
2984 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2985 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
2986 | #endif |
2987 | ||
02f1175c JS |
2988 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
2989 | return; | |
1da177e4 | 2990 | |
875b206b | 2991 | cinfo = info->card; |
02f1175c | 2992 | channel = info->line - cinfo->first_line; |
2693f485 | 2993 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2994 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2995 | cyy_writeb(info, CyCAR, channel & 0x03); |
2996 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 2997 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2998 | } |
02f1175c | 2999 | } /* cy_start */ |
1da177e4 | 3000 | |
1da177e4 LT |
3001 | /* |
3002 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
3003 | */ | |
02f1175c | 3004 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 3005 | { |
cab9bdd1 | 3006 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 3007 | |
1da177e4 | 3008 | #ifdef CY_DEBUG_OTHER |
21719191 | 3009 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
3010 | #endif |
3011 | ||
02f1175c JS |
3012 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
3013 | return; | |
1da177e4 | 3014 | |
02f1175c | 3015 | cy_flush_buffer(tty); |
d13549f8 | 3016 | cy_shutdown(info, tty); |
174e6fe0 | 3017 | tty_port_hangup(&info->port); |
02f1175c | 3018 | } /* cy_hangup */ |
1da177e4 | 3019 | |
f0737579 JS |
3020 | static int cyy_carrier_raised(struct tty_port *port) |
3021 | { | |
3022 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3023 | port); | |
3024 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
3025 | unsigned long flags; |
3026 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
3027 | u32 cd; |
3028 | ||
f0737579 | 3029 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3030 | cyy_writeb(info, CyCAR, channel & 0x03); |
3031 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
3032 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3033 | ||
3034 | return cd; | |
3035 | } | |
3036 | ||
3037 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
3038 | { | |
3039 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3040 | port); | |
3041 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 3042 | unsigned long flags; |
f0737579 JS |
3043 | |
3044 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3045 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3046 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3047 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3048 | } | |
3049 | ||
3050 | static int cyz_carrier_raised(struct tty_port *port) | |
3051 | { | |
3052 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3053 | port); | |
f0737579 | 3054 | |
f0eefdc3 | 3055 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3056 | } |
3057 | ||
3058 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3059 | { | |
3060 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3061 | port); | |
3062 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3063 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3064 | int ret, channel = info->line - cinfo->first_line; |
3065 | u32 rs; | |
3066 | ||
f0eefdc3 | 3067 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3068 | if (raise) |
3069 | rs |= C_RS_RTS | C_RS_DTR; | |
3070 | else | |
3071 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3072 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3073 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3074 | if (ret != 0) | |
3075 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3076 | __func__, info->line, ret); | |
3077 | #ifdef CY_DEBUG_DTR | |
3078 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3079 | #endif | |
3080 | } | |
3081 | ||
3082 | static const struct tty_port_operations cyy_port_ops = { | |
3083 | .carrier_raised = cyy_carrier_raised, | |
3084 | .dtr_rts = cyy_dtr_rts, | |
e936ffd5 | 3085 | .shutdown = cy_do_close, |
f0737579 JS |
3086 | }; |
3087 | ||
3088 | static const struct tty_port_operations cyz_port_ops = { | |
3089 | .carrier_raised = cyz_carrier_raised, | |
3090 | .dtr_rts = cyz_dtr_rts, | |
e936ffd5 | 3091 | .shutdown = cy_do_close, |
f0737579 JS |
3092 | }; |
3093 | ||
1da177e4 LT |
3094 | /* |
3095 | * --------------------------------------------------------------------- | |
3096 | * cy_init() and friends | |
3097 | * | |
3098 | * cy_init() is called at boot-time to initialize the serial driver. | |
3099 | * --------------------------------------------------------------------- | |
3100 | */ | |
3101 | ||
dd025c0c | 3102 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3103 | { |
3104 | struct cyclades_port *info; | |
f0eefdc3 | 3105 | unsigned int channel, port; |
0809e267 | 3106 | |
3046d50e | 3107 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3108 | cinfo->intr_enabled = 0; |
3046d50e | 3109 | |
963118ee JS |
3110 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3111 | GFP_KERNEL); | |
dd025c0c JS |
3112 | if (cinfo->ports == NULL) { |
3113 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3114 | return -ENOMEM; | |
3115 | } | |
3116 | ||
f0eefdc3 JS |
3117 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3118 | channel++, port++) { | |
3119 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3120 | tty_port_init(&info->port); |
3046d50e | 3121 | info->magic = CYCLADES_MAGIC; |
875b206b | 3122 | info->card = cinfo; |
3046d50e | 3123 | info->line = port; |
3046d50e | 3124 | |
44b7d1b3 AC |
3125 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3126 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 3127 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 3128 | init_completion(&info->shutdown_wait); |
3046d50e | 3129 | |
2693f485 | 3130 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3131 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3132 | struct ZFW_CTRL *zfw_ctrl; | |
3133 | ||
f0737579 | 3134 | info->port.ops = &cyz_port_ops; |
0809e267 | 3135 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3136 | |
3137 | zfw_ctrl = cinfo->base_addr + | |
3138 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3139 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3140 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3141 | ||
101b8159 | 3142 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3143 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3144 | else | |
3046d50e | 3145 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3146 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3147 | setup_timer(&cyz_rx_full_timer[port], |
3148 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3149 | #endif |
3046d50e | 3150 | } else { |
f0eefdc3 | 3151 | unsigned short chip_number; |
963118ee | 3152 | int index = cinfo->bus_index; |
f0eefdc3 | 3153 | |
f0737579 | 3154 | info->port.ops = &cyy_port_ops; |
0809e267 | 3155 | info->type = PORT_CIRRUS; |
0809e267 | 3156 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3157 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3158 | info->cor2 = CyETC; |
3159 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3160 | |
f0eefdc3 | 3161 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3162 | info->u.cyy.base_addr = cinfo->base_addr + |
3163 | (cy_chip_offset[chip_number] << index); | |
3164 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3165 | |
3166 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3167 | /* It is a CD1400 rev. J or later */ |
3168 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3169 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3170 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3171 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3172 | info->rtsdtr_inv = 1; |
3173 | } else { | |
3174 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3175 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3176 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3177 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3178 | info->rtsdtr_inv = 0; |
3179 | } | |
3046d50e JS |
3180 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3181 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3182 | } |
3046d50e | 3183 | |
0809e267 | 3184 | } |
3046d50e JS |
3185 | |
3186 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3187 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3188 | mod_timer(&cyz_timerlist, jiffies + 1); |
3189 | #ifdef CY_PCI_DEBUG | |
3190 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3191 | #endif | |
3192 | } | |
3193 | #endif | |
dd025c0c | 3194 | return 0; |
0809e267 JS |
3195 | } |
3196 | ||
1da177e4 LT |
3197 | /* initialize chips on Cyclom-Y card -- return number of valid |
3198 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
3199 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
3200 | int index) | |
1da177e4 | 3201 | { |
02f1175c JS |
3202 | unsigned int chip_number; |
3203 | void __iomem *base_addr; | |
3204 | ||
3205 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3206 | /* Cy_HwReset is 0x1400 */ | |
3207 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3208 | /* Cy_ClrIntr is 0x1800 */ | |
3209 | udelay(500L); | |
3210 | ||
15ed6cc0 AC |
3211 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3212 | chip_number++) { | |
02f1175c JS |
3213 | base_addr = |
3214 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3215 | mdelay(1); | |
db05c3b1 | 3216 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3217 | /************* |
3218 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3219 | chip_number, (unsigned long)base_addr); | |
3220 | *************/ | |
3221 | return chip_number; | |
3222 | } | |
3223 | ||
3224 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3225 | udelay(10L); | |
3226 | ||
3227 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3228 | cannot distinguish between references to chip 0 and a non- | |
3229 | existent chip 4. If the preceding clearing of the supposed | |
3230 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3231 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3232 | */ | |
db05c3b1 | 3233 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3234 | (cy_chip_offset[0] << index) + |
3235 | (CyGFRCR << index)) == 0) { | |
3236 | return chip_number; | |
3237 | } | |
3238 | ||
3239 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3240 | mdelay(1); | |
3241 | ||
db05c3b1 | 3242 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3243 | /* |
3244 | printk(" chip #%d at %#6lx is not responding ", | |
3245 | chip_number, (unsigned long)base_addr); | |
3246 | printk("(GFRCR stayed 0)\n", | |
3247 | */ | |
3248 | return chip_number; | |
3249 | } | |
db05c3b1 | 3250 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3251 | 0x40) { |
3252 | /* | |
3253 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3254 | "%#2x)\n", | |
3255 | chip_number, (unsigned long)base_addr, | |
3256 | base_addr[CyGFRCR<<index]); | |
3257 | */ | |
3258 | return chip_number; | |
3259 | } | |
3260 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3261 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3262 | /* It is a CD1400 rev. J or later */ |
3263 | /* Impossible to reach 5ms with this chip. | |
3264 | Changed to 2ms instead (f = 500 Hz). */ | |
3265 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3266 | } else { | |
3267 | /* f = 200 Hz */ | |
3268 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3269 | } | |
1da177e4 | 3270 | |
02f1175c JS |
3271 | /* |
3272 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3273 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3274 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3275 | */ |
3276 | } | |
3277 | return chip_number; | |
3278 | } /* cyy_init_card */ | |
1da177e4 LT |
3279 | |
3280 | /* | |
3281 | * --------------------------------------------------------------------- | |
3282 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3283 | * sets global variables and return the number of ISA boards found. | |
3284 | * --------------------------------------------------------------------- | |
3285 | */ | |
02f1175c | 3286 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3287 | { |
3288 | #ifdef CONFIG_ISA | |
718c4ca1 | 3289 | struct cyclades_card *card; |
02f1175c JS |
3290 | unsigned short cy_isa_irq, nboard; |
3291 | void __iomem *cy_isa_address; | |
3292 | unsigned short i, j, cy_isa_nchan; | |
02f1175c | 3293 | int isparam = 0; |
1da177e4 | 3294 | |
02f1175c | 3295 | nboard = 0; |
1da177e4 | 3296 | |
1da177e4 | 3297 | /* Check for module parameters */ |
02f1175c JS |
3298 | for (i = 0; i < NR_CARDS; i++) { |
3299 | if (maddr[i] || i) { | |
3300 | isparam = 1; | |
3301 | cy_isa_addresses[i] = maddr[i]; | |
3302 | } | |
3303 | if (!maddr[i]) | |
3304 | break; | |
1da177e4 | 3305 | } |
1da177e4 | 3306 | |
02f1175c JS |
3307 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3308 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3309 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3310 | if (isa_address == 0x0000) |
096dcfce | 3311 | return nboard; |
1da177e4 | 3312 | |
02f1175c | 3313 | /* probe for CD1400... */ |
cd989b3a | 3314 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3315 | if (cy_isa_address == NULL) { |
3316 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3317 | "address\n"); | |
3318 | continue; | |
3319 | } | |
02f1175c JS |
3320 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3321 | cyy_init_card(cy_isa_address, 0); | |
3322 | if (cy_isa_nchan == 0) { | |
3137553d | 3323 | iounmap(cy_isa_address); |
02f1175c JS |
3324 | continue; |
3325 | } | |
20904363 | 3326 | |
196b3167 | 3327 | if (isparam && i < NR_CARDS && irq[i]) |
02f1175c | 3328 | cy_isa_irq = irq[i]; |
1da177e4 | 3329 | else |
02f1175c JS |
3330 | /* find out the board's irq by probing */ |
3331 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3332 | if (cy_isa_irq == 0) { | |
21719191 JS |
3333 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3334 | "IRQ could not be detected.\n", | |
02f1175c | 3335 | (unsigned long)cy_isa_address); |
3137553d | 3336 | iounmap(cy_isa_address); |
02f1175c JS |
3337 | continue; |
3338 | } | |
3339 | ||
3340 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3341 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3342 | "more channels are available. Change NR_PORTS " | |
3343 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3344 | (unsigned long)cy_isa_address); |
3137553d | 3345 | iounmap(cy_isa_address); |
096dcfce | 3346 | return nboard; |
02f1175c JS |
3347 | } |
3348 | /* fill the next cy_card structure available */ | |
3349 | for (j = 0; j < NR_CARDS; j++) { | |
718c4ca1 JS |
3350 | card = &cy_card[j]; |
3351 | if (card->base_addr == NULL) | |
02f1175c JS |
3352 | break; |
3353 | } | |
3354 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3355 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3356 | "more cards can be used. Change NR_CARDS in " | |
3357 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3358 | (unsigned long)cy_isa_address); |
3137553d | 3359 | iounmap(cy_isa_address); |
096dcfce | 3360 | return nboard; |
02f1175c JS |
3361 | } |
3362 | ||
3363 | /* allocate IRQ */ | |
3364 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
718c4ca1 | 3365 | 0, "Cyclom-Y", card)) { |
21719191 JS |
3366 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3367 | "could not allocate IRQ#%d.\n", | |
3368 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3369 | iounmap(cy_isa_address); |
096dcfce | 3370 | return nboard; |
02f1175c JS |
3371 | } |
3372 | ||
3373 | /* set cy_card */ | |
718c4ca1 JS |
3374 | card->base_addr = cy_isa_address; |
3375 | card->ctl_addr.p9050 = NULL; | |
3376 | card->irq = (int)cy_isa_irq; | |
3377 | card->bus_index = 0; | |
3378 | card->first_line = cy_next_channel; | |
3379 | card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; | |
3380 | card->nports = cy_isa_nchan; | |
3381 | if (cy_init_card(card)) { | |
3382 | card->base_addr = NULL; | |
3383 | free_irq(cy_isa_irq, card); | |
3137553d JS |
3384 | iounmap(cy_isa_address); |
3385 | continue; | |
3386 | } | |
02f1175c JS |
3387 | nboard++; |
3388 | ||
21719191 JS |
3389 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3390 | "%d channels starting from port %d\n", | |
02f1175c JS |
3391 | j + 1, (unsigned long)cy_isa_address, |
3392 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3393 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3394 | ||
6ad1ccc1 JS |
3395 | for (j = cy_next_channel; |
3396 | j < cy_next_channel + cy_isa_nchan; j++) | |
3397 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
3398 | cy_next_channel += cy_isa_nchan; |
3399 | } | |
096dcfce | 3400 | return nboard; |
1da177e4 | 3401 | #else |
096dcfce | 3402 | return 0; |
02f1175c JS |
3403 | #endif /* CONFIG_ISA */ |
3404 | } /* cy_detect_isa */ | |
1da177e4 | 3405 | |
58936d8d | 3406 | #ifdef CONFIG_PCI |
054f5b0a JS |
3407 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
3408 | { | |
3409 | unsigned int a; | |
3410 | ||
3411 | for (a = 0; a < size && *str; a++, str++) | |
3412 | if (*str & 0x80) | |
3413 | return -EINVAL; | |
3414 | ||
3415 | for (; a < size; a++, str++) | |
3416 | if (*str) | |
3417 | return -EINVAL; | |
3418 | ||
3419 | return 0; | |
3420 | } | |
3421 | ||
f61e761e | 3422 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3423 | unsigned int size) |
3424 | { | |
3425 | for (; size > 0; size--) { | |
3426 | cy_writel(fpga, *data++); | |
3427 | udelay(10); | |
3428 | } | |
3429 | } | |
3430 | ||
3431 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
3432 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 3433 | { |
02f1175c | 3434 | /* Reset PLX */ |
054f5b0a | 3435 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3436 | udelay(100L); |
054f5b0a | 3437 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3438 | |
3439 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3440 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3441 | udelay(100L); |
054f5b0a JS |
3442 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3443 | ||
3444 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3445 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3446 | * registers. This will remain here until we find a permanent fix. | |
3447 | */ | |
3448 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3449 | } | |
3450 | ||
3451 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
3452 | const char *name, const u32 mailbox, void __iomem *base, | |
3453 | void __iomem *fpga) | |
3454 | { | |
f61e761e DW |
3455 | const void *ptr = fw->data; |
3456 | const struct zfile_header *h = ptr; | |
3457 | const struct zfile_config *c, *cs; | |
3458 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3459 | unsigned int a, tmp, len = fw->size; |
3460 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3461 | if (len < sizeof(*h)) { | |
3462 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3463 | return -EINVAL; | |
3464 | } | |
3465 | ||
3466 | cs = ptr + h->config_offset; | |
3467 | bs = ptr + h->block_offset; | |
3468 | ||
3469 | if ((void *)(cs + h->n_config) > ptr + len || | |
3470 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3471 | printk(BAD_FW "too short"); | |
3472 | return -EINVAL; | |
3473 | } | |
3474 | ||
3475 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3476 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3477 | printk(BAD_FW "bad formatted header string\n"); | |
3478 | return -EINVAL; | |
3479 | } | |
3480 | ||
3481 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3482 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3483 | return -EINVAL; | |
3484 | } | |
3485 | ||
3486 | tmp = 0; | |
3487 | for (c = cs; c < cs + h->n_config; c++) { | |
3488 | for (a = 0; a < c->n_blocks; a++) | |
3489 | if (c->block_list[a] > h->n_blocks) { | |
3490 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3491 | return -EINVAL; | |
3492 | } | |
3493 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3494 | tmp++; | |
3495 | } | |
3496 | if (!tmp) { | |
3497 | printk(BAD_FW "nothing appropriate\n"); | |
3498 | return -EINVAL; | |
3499 | } | |
3500 | ||
3501 | for (b = bs; b < bs + h->n_blocks; b++) | |
3502 | if (b->file_offset + b->size > len) { | |
3503 | printk(BAD_FW "bad block data offset\n"); | |
3504 | return -EINVAL; | |
3505 | } | |
3506 | ||
3507 | /* everything is OK, let's seek'n'load it */ | |
3508 | for (c = cs; c < cs + h->n_config; c++) | |
3509 | if (c->mailbox == mailbox && c->function == 0) | |
3510 | break; | |
3511 | ||
3512 | for (a = 0; a < c->n_blocks; a++) { | |
3513 | b = &bs[c->block_list[a]]; | |
3514 | if (b->type == ZBLOCK_FPGA) { | |
3515 | if (fpga != NULL) | |
3516 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3517 | b->size); | |
3518 | } else { | |
3519 | if (base != NULL) | |
3520 | memcpy_toio(base + b->ram_offset, | |
3521 | ptr + b->file_offset, b->size); | |
3522 | } | |
3523 | } | |
3524 | #undef BAD_FW | |
3525 | return 0; | |
3526 | } | |
3527 | ||
3528 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
3529 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
3530 | { | |
3531 | const struct firmware *fw; | |
3532 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3533 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3534 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3535 | void __iomem *tmp; |
963118ee | 3536 | u32 mailbox, status, nchan; |
054f5b0a JS |
3537 | unsigned int i; |
3538 | int retval; | |
3539 | ||
3540 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3541 | if (retval) { | |
3542 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3543 | goto err; | |
3544 | } | |
3545 | ||
3546 | /* Check whether the firmware is already loaded and running. If | |
3547 | positive, skip this board */ | |
2693f485 | 3548 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3549 | u32 cntval = readl(base_addr + 0x190); |
3550 | ||
3551 | udelay(100); | |
3552 | if (cntval != readl(base_addr + 0x190)) { | |
3553 | /* FW counter is working, FW is running */ | |
3554 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3555 | "Skipping board.\n"); | |
3556 | retval = 0; | |
3557 | goto err_rel; | |
3558 | } | |
3559 | } | |
3560 | ||
3561 | /* start boot */ | |
3562 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3563 | ~0x00030800UL); | |
3564 | ||
3565 | mailbox = readl(&ctl_addr->mail_box_0); | |
3566 | ||
2693f485 | 3567 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3568 | /* stops CPU and set window to beginning of RAM */ |
3569 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3570 | cy_writel(&cust->cpu_stop, 0); | |
3571 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3572 | udelay(100); | |
3573 | } | |
3574 | ||
3575 | plx_init(pdev, irq, ctl_addr); | |
3576 | ||
3577 | if (mailbox != 0) { | |
3578 | /* load FPGA */ | |
3579 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3580 | base_addr); | |
3581 | if (retval) | |
3582 | goto err_rel; | |
2693f485 | 3583 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3584 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3585 | "not loaded\n"); | |
3586 | goto err_rel; | |
3587 | } | |
3588 | } | |
3589 | ||
3590 | /* stops CPU and set window to beginning of RAM */ | |
3591 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3592 | cy_writel(&cust->cpu_stop, 0); | |
3593 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3594 | udelay(100); | |
3595 | ||
3596 | /* clear memory */ | |
c4923b4f | 3597 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3598 | cy_writeb(tmp, 255); |
3599 | if (mailbox != 0) { | |
3600 | /* set window to last 512K of RAM */ | |
3601 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3602 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3603 | cy_writeb(tmp, 255); |
3604 | /* set window to beginning of RAM */ | |
3605 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3606 | } |
3607 | ||
3608 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3609 | release_firmware(fw); | |
3610 | if (retval) | |
3611 | goto err; | |
3612 | ||
3613 | /* finish boot and start boards */ | |
3614 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3615 | cy_writel(&cust->cpu_start, 0); | |
3616 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3617 | i = 0; | |
3618 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3619 | msleep(100); | |
3620 | if (status != ZFIRM_ID) { | |
3621 | if (status == ZFIRM_HLT) { | |
3622 | dev_err(&pdev->dev, "you need an external power supply " | |
3623 | "for this number of ports. Firmware halted and " | |
3624 | "board reset.\n"); | |
3625 | retval = -EIO; | |
3626 | goto err; | |
3627 | } | |
3628 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3629 | "some more time\n", status); | |
3630 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3631 | i++ < 200) | |
3632 | msleep(100); | |
3633 | if (status != ZFIRM_ID) { | |
3634 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3635 | "Giving up. (fid->signature = 0x%x)\n", | |
3636 | status); | |
3637 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3638 | "upgrading the FW, please power cycle the " | |
3639 | "system before loading the new FW to the " | |
3640 | "Cyclades-Z.\n"); | |
3641 | ||
2693f485 | 3642 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3643 | plx_init(pdev, irq, ctl_addr); |
3644 | ||
3645 | retval = -EIO; | |
3646 | goto err; | |
3647 | } | |
3648 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3649 | i / 10); | |
3650 | } | |
3651 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3652 | ||
3653 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3654 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3655 | base_addr + readl(&fid->zfwctrl_addr)); | |
3656 | ||
963118ee | 3657 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3658 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3659 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3660 | |
963118ee | 3661 | if (nchan == 0) { |
054f5b0a JS |
3662 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3663 | "check the connection between the Z host card and the " | |
3664 | "serial expanders.\n"); | |
3665 | ||
2693f485 | 3666 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3667 | plx_init(pdev, irq, ctl_addr); |
3668 | ||
3669 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3670 | "reset.\n"); | |
3671 | retval = 0; | |
3672 | goto err; | |
3673 | } | |
3674 | ||
3675 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3676 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3677 | ||
3678 | /* | |
3679 | Early firmware failed to start looking for commands. | |
3680 | This enables firmware interrupts for those commands. | |
3681 | */ | |
3682 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3683 | (1 << 17)); | |
3684 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3685 | 0x00030800UL); | |
3686 | ||
963118ee | 3687 | return nchan; |
054f5b0a JS |
3688 | err_rel: |
3689 | release_firmware(fw); | |
3690 | err: | |
3691 | return retval; | |
1da177e4 LT |
3692 | } |
3693 | ||
58936d8d JS |
3694 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
3695 | const struct pci_device_id *ent) | |
1da177e4 | 3696 | { |
718c4ca1 | 3697 | struct cyclades_card *card; |
3137553d JS |
3698 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3699 | char *card_name = NULL; | |
101b8159 | 3700 | u32 uninitialized_var(mailbox); |
3137553d JS |
3701 | unsigned int device_id, nchan = 0, card_no, i; |
3702 | unsigned char plx_ver; | |
3703 | int retval, irq; | |
02f1175c | 3704 | |
58936d8d JS |
3705 | retval = pci_enable_device(pdev); |
3706 | if (retval) { | |
3707 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3708 | goto err; |
58936d8d | 3709 | } |
1da177e4 | 3710 | |
58936d8d | 3711 | /* read PCI configuration area */ |
3137553d | 3712 | irq = pdev->irq; |
58936d8d | 3713 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3714 | |
3137553d JS |
3715 | #if defined(__alpha__) |
3716 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3717 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3718 | "addresses on Alpha systems.\n"); | |
3719 | retval = -EIO; | |
3720 | goto err_dis; | |
3721 | } | |
3722 | #endif | |
3723 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3724 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3725 | "addresses\n"); | |
3726 | retval = -EIO; | |
3727 | goto err_dis; | |
3728 | } | |
3729 | ||
3730 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3731 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3732 | "it...\n"); | |
3733 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3734 | } | |
3735 | ||
3736 | retval = pci_request_regions(pdev, "cyclades"); | |
3737 | if (retval) { | |
3738 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3739 | goto err_dis; | |
3740 | } | |
3741 | ||
3742 | retval = -EIO; | |
58936d8d JS |
3743 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3744 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3745 | card_name = "Cyclom-Y"; |
1da177e4 | 3746 | |
24e6fd4c JS |
3747 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3748 | CyPCI_Yctl); | |
3137553d JS |
3749 | if (addr0 == NULL) { |
3750 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3751 | goto err_reg; | |
58936d8d | 3752 | } |
24e6fd4c JS |
3753 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3754 | CyPCI_Ywin); | |
3137553d JS |
3755 | if (addr2 == NULL) { |
3756 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3757 | goto err_unmap; | |
58936d8d | 3758 | } |
1da177e4 | 3759 | |
3137553d JS |
3760 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3761 | if (nchan == 0) { | |
21719191 JS |
3762 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3763 | "Serial-Modules\n"); | |
c847d47c | 3764 | goto err_unmap; |
58936d8d | 3765 | } |
58936d8d | 3766 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3767 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3768 | |
24e6fd4c JS |
3769 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3770 | CyPCI_Zctl); | |
3137553d JS |
3771 | if (addr0 == NULL) { |
3772 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3773 | goto err_reg; | |
3774 | } | |
58936d8d JS |
3775 | |
3776 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3777 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3778 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3779 | |
054f5b0a | 3780 | plx_init(pdev, irq, addr0); |
02f1175c | 3781 | |
101b8159 | 3782 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3783 | |
24e6fd4c JS |
3784 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3785 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3786 | if (addr2 == NULL) { |
3787 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3788 | goto err_unmap; | |
58936d8d JS |
3789 | } |
3790 | ||
3791 | if (mailbox == ZE_V1) { | |
3137553d | 3792 | card_name = "Cyclades-Ze"; |
58936d8d | 3793 | } else { |
3137553d | 3794 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3795 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3796 | if (mailbox == ZO_V1) { |
3797 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3798 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3799 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3800 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3801 | fpga_id)), (ulong)(0xff & | |
3802 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3803 | fpga_version))); | |
3804 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3805 | } else { | |
3806 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3807 | "Cyclades-Z board. FPGA not loaded\n"); | |
3808 | } | |
1da177e4 | 3809 | #endif |
3137553d JS |
3810 | /* The following clears the firmware id word. This |
3811 | ensures that the driver will not attempt to talk to | |
3812 | the board until it has been properly initialized. | |
3813 | */ | |
3814 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3815 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3816 | } |
ace08c3c JS |
3817 | |
3818 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3819 | if (retval <= 0) |
ace08c3c | 3820 | goto err_unmap; |
963118ee | 3821 | nchan = retval; |
3137553d JS |
3822 | } |
3823 | ||
3824 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3825 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3826 | "channels are available. Change NR_PORTS in " | |
3827 | "cyclades.c and recompile kernel.\n"); | |
3828 | goto err_unmap; | |
3829 | } | |
3830 | /* fill the next cy_card structure available */ | |
3831 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
718c4ca1 JS |
3832 | card = &cy_card[card_no]; |
3833 | if (card->base_addr == NULL) | |
3137553d JS |
3834 | break; |
3835 | } | |
3836 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3837 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3838 | "more cards can be used. Change NR_CARDS in " | |
3839 | "cyclades.c and recompile kernel.\n"); | |
3840 | goto err_unmap; | |
3841 | } | |
3842 | ||
3843 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3844 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3845 | /* allocate IRQ */ | |
3846 | retval = request_irq(irq, cyy_interrupt, | |
718c4ca1 | 3847 | IRQF_SHARED, "Cyclom-Y", card); |
3137553d JS |
3848 | if (retval) { |
3849 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3850 | goto err_unmap; | |
58936d8d | 3851 | } |
718c4ca1 | 3852 | card->num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3853 | } else { |
f0eefdc3 JS |
3854 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3855 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3856 | ||
3857 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3858 | ||
718c4ca1 JS |
3859 | card->hw_ver = mailbox; |
3860 | card->num_chips = (unsigned int)-1; | |
3861 | card->board_ctrl = &zfw_ctrl->board_ctrl; | |
02f1175c | 3862 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3863 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3864 | if (irq != 0 && irq != 255) { |
3865 | retval = request_irq(irq, cyz_interrupt, | |
718c4ca1 | 3866 | IRQF_SHARED, "Cyclades-Z", card); |
58936d8d | 3867 | if (retval) { |
21719191 | 3868 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3869 | goto err_unmap; |
02f1175c | 3870 | } |
58936d8d | 3871 | } |
02f1175c | 3872 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3873 | } |
02f1175c | 3874 | |
3137553d | 3875 | /* set cy_card */ |
718c4ca1 JS |
3876 | card->base_addr = addr2; |
3877 | card->ctl_addr.p9050 = addr0; | |
3878 | card->irq = irq; | |
3879 | card->bus_index = 1; | |
3880 | card->first_line = cy_next_channel; | |
3881 | card->nports = nchan; | |
3882 | retval = cy_init_card(card); | |
3137553d JS |
3883 | if (retval) |
3884 | goto err_null; | |
58936d8d | 3885 | |
718c4ca1 | 3886 | pci_set_drvdata(pdev, card); |
58936d8d | 3887 | |
3137553d JS |
3888 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3889 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3890 | /* enable interrupts in the PCI interface */ | |
3891 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3892 | switch (plx_ver) { | |
3893 | case PLX_9050: | |
3137553d JS |
3894 | cy_writeb(addr0 + 0x4c, 0x43); |
3895 | break; | |
3896 | ||
3897 | case PLX_9060: | |
3898 | case PLX_9080: | |
3899 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3900 | { |
3901 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3902 | plx_init(pdev, irq, ctl_addr); | |
3903 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3904 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3905 | break; |
3906 | } | |
97e87f8e | 3907 | } |
58936d8d JS |
3908 | } |
3909 | ||
3137553d JS |
3910 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3911 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
3912 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
3913 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
3914 | cy_next_channel += nchan; | |
3915 | ||
58936d8d | 3916 | return 0; |
3137553d | 3917 | err_null: |
718c4ca1 JS |
3918 | card->base_addr = NULL; |
3919 | free_irq(irq, card); | |
3137553d | 3920 | err_unmap: |
24e6fd4c | 3921 | iounmap(addr0); |
3137553d | 3922 | if (addr2) |
24e6fd4c | 3923 | iounmap(addr2); |
3137553d JS |
3924 | err_reg: |
3925 | pci_release_regions(pdev); | |
3926 | err_dis: | |
3927 | pci_disable_device(pdev); | |
3928 | err: | |
3929 | return retval; | |
58936d8d | 3930 | } |
58936d8d | 3931 | |
6747cd93 | 3932 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3933 | { |
38d09093 | 3934 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 3935 | unsigned int i; |
38d09093 | 3936 | |
85c93fa9 | 3937 | /* non-Z with old PLX */ |
2693f485 | 3938 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3939 | PLX_9050) |
97e87f8e | 3940 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3941 | else |
3942 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3943 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3944 | #endif |
97e87f8e JS |
3945 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3946 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3947 | ~0x0900); | |
85c93fa9 | 3948 | |
24e6fd4c | 3949 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3950 | if (cinfo->ctl_addr.p9050) |
3951 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3952 | if (cinfo->irq |
3953 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3954 | && !cy_is_Z(cinfo) |
38d09093 JS |
3955 | #endif /* CONFIG_CYZ_INTR */ |
3956 | ) | |
3957 | free_irq(cinfo->irq, cinfo); | |
3958 | pci_release_regions(pdev); | |
3959 | ||
3960 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
3961 | for (i = cinfo->first_line; i < cinfo->first_line + |
3962 | cinfo->nports; i++) | |
3963 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
3964 | cinfo->nports = 0; |
3965 | kfree(cinfo->ports); | |
38d09093 JS |
3966 | } |
3967 | ||
6747cd93 JS |
3968 | static struct pci_driver cy_pci_driver = { |
3969 | .name = "cyclades", | |
3970 | .id_table = cy_pci_dev_id, | |
3971 | .probe = cy_pci_probe, | |
3972 | .remove = __devexit_p(cy_pci_remove) | |
3973 | }; | |
3974 | #endif | |
3975 | ||
444697d6 | 3976 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 3977 | { |
02f1175c | 3978 | struct cyclades_port *info; |
dd025c0c | 3979 | unsigned int i, j; |
02f1175c JS |
3980 | __u32 cur_jifs = jiffies; |
3981 | ||
444697d6 | 3982 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
3983 | "IdleIn Overruns Ldisc\n"); |
3984 | ||
02f1175c | 3985 | /* Output one line for each known port */ |
dd025c0c JS |
3986 | for (i = 0; i < NR_CARDS; i++) |
3987 | for (j = 0; j < cy_card[i].nports; j++) { | |
3988 | info = &cy_card[i].ports[j]; | |
3989 | ||
d13549f8 JS |
3990 | if (info->port.count) { |
3991 | /* XXX is the ldisc num worth this? */ | |
3992 | struct tty_struct *tty; | |
3993 | struct tty_ldisc *ld; | |
3994 | int num = 0; | |
3995 | tty = tty_port_tty_get(&info->port); | |
3996 | if (tty) { | |
3997 | ld = tty_ldisc_ref(tty); | |
3998 | if (ld) { | |
3999 | num = ld->ops->num; | |
4000 | tty_ldisc_deref(ld); | |
4001 | } | |
4002 | tty_kref_put(tty); | |
4003 | } | |
444697d6 | 4004 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 4005 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
4006 | (cur_jifs - info->idle_stats.in_use) / |
4007 | HZ, info->idle_stats.xmit_bytes, | |
4008 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
4009 | HZ, info->idle_stats.recv_bytes, | |
4010 | (cur_jifs - info->idle_stats.recv_idle)/ | |
4011 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
4012 | num); |
4013 | } else | |
444697d6 | 4014 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
4015 | "%10lu %8lu %9lu %6ld\n", |
4016 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 4017 | } |
444697d6 AD |
4018 | return 0; |
4019 | } | |
4020 | ||
4021 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
4022 | { | |
4023 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
4024 | } |
4025 | ||
444697d6 AD |
4026 | static const struct file_operations cyclades_proc_fops = { |
4027 | .owner = THIS_MODULE, | |
4028 | .open = cyclades_proc_open, | |
4029 | .read = seq_read, | |
4030 | .llseek = seq_lseek, | |
4031 | .release = single_release, | |
4032 | }; | |
4033 | ||
1da177e4 LT |
4034 | /* The serial driver boot-time initialization code! |
4035 | Hardware I/O ports are mapped to character special devices on a | |
4036 | first found, first allocated manner. That is, this code searches | |
4037 | for Cyclom cards in the system. As each is found, it is probed | |
4038 | to discover how many chips (and thus how many ports) are present. | |
4039 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4040 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4041 | port mapping on a following card will shift. | |
4042 | ||
4043 | This approach is different from what is used in the other serial | |
4044 | device driver because the Cyclom is more properly a multiplexer, | |
4045 | not just an aggregation of serial ports on one card. | |
4046 | ||
4047 | If there are more cards with more ports than have been | |
4048 | statically allocated above, a warning is printed and the | |
4049 | extra ports are ignored. | |
4050 | */ | |
4051 | ||
b68e31d0 | 4052 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4053 | .open = cy_open, |
4054 | .close = cy_close, | |
4055 | .write = cy_write, | |
4056 | .put_char = cy_put_char, | |
4057 | .flush_chars = cy_flush_chars, | |
4058 | .write_room = cy_write_room, | |
4059 | .chars_in_buffer = cy_chars_in_buffer, | |
4060 | .flush_buffer = cy_flush_buffer, | |
4061 | .ioctl = cy_ioctl, | |
4062 | .throttle = cy_throttle, | |
4063 | .unthrottle = cy_unthrottle, | |
4064 | .set_termios = cy_set_termios, | |
4065 | .stop = cy_stop, | |
4066 | .start = cy_start, | |
4067 | .hangup = cy_hangup, | |
4068 | .break_ctl = cy_break, | |
4069 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4070 | .tiocmget = cy_tiocmget, |
4071 | .tiocmset = cy_tiocmset, | |
0587102c | 4072 | .get_icount = cy_get_icount, |
444697d6 | 4073 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4074 | }; |
4075 | ||
02f1175c | 4076 | static int __init cy_init(void) |
1da177e4 | 4077 | { |
dd025c0c | 4078 | unsigned int nboards; |
9dacf3b2 | 4079 | int retval = -ENOMEM; |
02f1175c JS |
4080 | |
4081 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4082 | if (!cy_serial_driver) | |
9dacf3b2 | 4083 | goto err; |
21719191 | 4084 | |
64a14b51 | 4085 | printk(KERN_INFO "Cyclades driver " CY_VERSION "\n"); |
02f1175c JS |
4086 | |
4087 | /* Initialize the tty_driver structure */ | |
4088 | ||
02f1175c JS |
4089 | cy_serial_driver->driver_name = "cyclades"; |
4090 | cy_serial_driver->name = "ttyC"; | |
4091 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4092 | cy_serial_driver->minor_start = 0; | |
4093 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4094 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4095 | cy_serial_driver->init_termios = tty_std_termios; | |
4096 | cy_serial_driver->init_termios.c_cflag = | |
4097 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4098 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4099 | tty_set_operations(cy_serial_driver, &cy_ops); |
4100 | ||
9dacf3b2 JS |
4101 | retval = tty_register_driver(cy_serial_driver); |
4102 | if (retval) { | |
4103 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4104 | goto err_frtty; | |
4105 | } | |
02f1175c | 4106 | |
02f1175c JS |
4107 | /* the code below is responsible to find the boards. Each different |
4108 | type of board has its own detection routine. If a board is found, | |
4109 | the next cy_card structure available is set by the detection | |
4110 | routine. These functions are responsible for checking the | |
4111 | availability of cy_card and cy_port data structures and updating | |
4112 | the cy_next_channel. */ | |
4113 | ||
4114 | /* look for isa boards */ | |
14a55a67 | 4115 | nboards = cy_detect_isa(); |
02f1175c | 4116 | |
6747cd93 | 4117 | #ifdef CONFIG_PCI |
02f1175c | 4118 | /* look for pci boards */ |
6747cd93 | 4119 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4120 | if (retval && !nboards) { |
4121 | tty_unregister_driver(cy_serial_driver); | |
4122 | goto err_frtty; | |
4123 | } | |
6747cd93 | 4124 | #endif |
9dacf3b2 JS |
4125 | |
4126 | return 0; | |
9dacf3b2 JS |
4127 | err_frtty: |
4128 | put_tty_driver(cy_serial_driver); | |
4129 | err: | |
4130 | return retval; | |
02f1175c | 4131 | } /* cy_init */ |
1da177e4 | 4132 | |
02f1175c | 4133 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4134 | { |
dd025c0c | 4135 | struct cyclades_card *card; |
65f76a82 | 4136 | unsigned int i, e1; |
1da177e4 LT |
4137 | |
4138 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4139 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4140 | #endif /* CONFIG_CYZ_INTR */ |
4141 | ||
15ed6cc0 AC |
4142 | e1 = tty_unregister_driver(cy_serial_driver); |
4143 | if (e1) | |
21719191 JS |
4144 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4145 | "driver(%d)\n", e1); | |
1da177e4 | 4146 | |
6747cd93 JS |
4147 | #ifdef CONFIG_PCI |
4148 | pci_unregister_driver(&cy_pci_driver); | |
4149 | #endif | |
4150 | ||
02f1175c | 4151 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4152 | card = &cy_card[i]; |
4153 | if (card->base_addr) { | |
85c93fa9 | 4154 | /* clear interrupt */ |
dd025c0c JS |
4155 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4156 | iounmap(card->base_addr); | |
97e87f8e JS |
4157 | if (card->ctl_addr.p9050) |
4158 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4159 | if (card->irq |
1da177e4 | 4160 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4161 | && !cy_is_Z(card) |
1da177e4 | 4162 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4163 | ) |
dd025c0c | 4164 | free_irq(card->irq, card); |
65f76a82 | 4165 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4166 | card->nports; e1++) |
6ad1ccc1 | 4167 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4168 | kfree(card->ports); |
02f1175c JS |
4169 | } |
4170 | } | |
f2462bfe JS |
4171 | |
4172 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4173 | } /* cy_cleanup_module */ |
4174 | ||
4175 | module_init(cy_init); | |
4176 | module_exit(cy_cleanup_module); | |
4177 | ||
4178 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4179 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4180 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
e6c4ef98 | 4181 | MODULE_FIRMWARE("cyzfirm.bin"); |