Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (c) 1996-2004 Russell King. |
3 | * | |
4 | * Please note that this platform does not support 32-bit IDE IO. | |
5 | */ | |
6 | ||
1da177e4 LT |
7 | #include <linux/string.h> |
8 | #include <linux/module.h> | |
9 | #include <linux/ioport.h> | |
10 | #include <linux/slab.h> | |
11 | #include <linux/blkdev.h> | |
12 | #include <linux/errno.h> | |
1da177e4 LT |
13 | #include <linux/ide.h> |
14 | #include <linux/dma-mapping.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/scatterlist.h> | |
ba5b55d0 | 18 | #include <linux/io.h> |
1da177e4 LT |
19 | |
20 | #include <asm/dma.h> | |
21 | #include <asm/ecard.h> | |
1da177e4 | 22 | |
67717e22 BZ |
23 | #define DRV_NAME "icside" |
24 | ||
1da177e4 LT |
25 | #define ICS_IDENT_OFFSET 0x2280 |
26 | ||
27 | #define ICS_ARCIN_V5_INTRSTAT 0x0000 | |
28 | #define ICS_ARCIN_V5_INTROFFSET 0x0004 | |
29 | #define ICS_ARCIN_V5_IDEOFFSET 0x2800 | |
30 | #define ICS_ARCIN_V5_IDEALTOFFSET 0x2b80 | |
31 | #define ICS_ARCIN_V5_IDESTEPPING 6 | |
32 | ||
33 | #define ICS_ARCIN_V6_IDEOFFSET_1 0x2000 | |
34 | #define ICS_ARCIN_V6_INTROFFSET_1 0x2200 | |
35 | #define ICS_ARCIN_V6_INTRSTAT_1 0x2290 | |
36 | #define ICS_ARCIN_V6_IDEALTOFFSET_1 0x2380 | |
37 | #define ICS_ARCIN_V6_IDEOFFSET_2 0x3000 | |
38 | #define ICS_ARCIN_V6_INTROFFSET_2 0x3200 | |
39 | #define ICS_ARCIN_V6_INTRSTAT_2 0x3290 | |
40 | #define ICS_ARCIN_V6_IDEALTOFFSET_2 0x3380 | |
41 | #define ICS_ARCIN_V6_IDESTEPPING 6 | |
42 | ||
43 | struct cardinfo { | |
44 | unsigned int dataoffset; | |
45 | unsigned int ctrloffset; | |
46 | unsigned int stepping; | |
47 | }; | |
48 | ||
49 | static struct cardinfo icside_cardinfo_v5 = { | |
50 | .dataoffset = ICS_ARCIN_V5_IDEOFFSET, | |
51 | .ctrloffset = ICS_ARCIN_V5_IDEALTOFFSET, | |
52 | .stepping = ICS_ARCIN_V5_IDESTEPPING, | |
53 | }; | |
54 | ||
55 | static struct cardinfo icside_cardinfo_v6_1 = { | |
56 | .dataoffset = ICS_ARCIN_V6_IDEOFFSET_1, | |
57 | .ctrloffset = ICS_ARCIN_V6_IDEALTOFFSET_1, | |
58 | .stepping = ICS_ARCIN_V6_IDESTEPPING, | |
59 | }; | |
60 | ||
61 | static struct cardinfo icside_cardinfo_v6_2 = { | |
62 | .dataoffset = ICS_ARCIN_V6_IDEOFFSET_2, | |
63 | .ctrloffset = ICS_ARCIN_V6_IDEALTOFFSET_2, | |
64 | .stepping = ICS_ARCIN_V6_IDESTEPPING, | |
65 | }; | |
66 | ||
67 | struct icside_state { | |
1da177e4 LT |
68 | void __iomem *irq_port; |
69 | void __iomem *ioc_base; | |
26839f09 | 70 | unsigned int sel; |
1da177e4 | 71 | unsigned int type; |
48c3c107 | 72 | struct ide_host *host; |
1da177e4 LT |
73 | }; |
74 | ||
75 | #define ICS_TYPE_A3IN 0 | |
76 | #define ICS_TYPE_A3USER 1 | |
77 | #define ICS_TYPE_V6 3 | |
78 | #define ICS_TYPE_V5 15 | |
79 | #define ICS_TYPE_NOTYPE ((unsigned int)-1) | |
80 | ||
81 | /* ---------------- Version 5 PCB Support Functions --------------------- */ | |
82 | /* Prototype: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr) | |
83 | * Purpose : enable interrupts from card | |
84 | */ | |
85 | static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr) | |
86 | { | |
87 | struct icside_state *state = ec->irq_data; | |
88 | ||
89 | writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET); | |
90 | } | |
91 | ||
92 | /* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr) | |
93 | * Purpose : disable interrupts from card | |
94 | */ | |
95 | static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr) | |
96 | { | |
97 | struct icside_state *state = ec->irq_data; | |
98 | ||
99 | readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET); | |
100 | } | |
101 | ||
102 | static const expansioncard_ops_t icside_ops_arcin_v5 = { | |
103 | .irqenable = icside_irqenable_arcin_v5, | |
104 | .irqdisable = icside_irqdisable_arcin_v5, | |
105 | }; | |
106 | ||
107 | ||
108 | /* ---------------- Version 6 PCB Support Functions --------------------- */ | |
109 | /* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr) | |
110 | * Purpose : enable interrupts from card | |
111 | */ | |
112 | static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr) | |
113 | { | |
114 | struct icside_state *state = ec->irq_data; | |
115 | void __iomem *base = state->irq_port; | |
116 | ||
dff8817b BZ |
117 | writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1); |
118 | readb(base + ICS_ARCIN_V6_INTROFFSET_2); | |
1da177e4 | 119 | |
dff8817b BZ |
120 | writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2); |
121 | readb(base + ICS_ARCIN_V6_INTROFFSET_1); | |
1da177e4 LT |
122 | } |
123 | ||
124 | /* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr) | |
125 | * Purpose : disable interrupts from card | |
126 | */ | |
127 | static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr) | |
128 | { | |
129 | struct icside_state *state = ec->irq_data; | |
130 | ||
1da177e4 LT |
131 | readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1); |
132 | readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2); | |
133 | } | |
134 | ||
135 | /* Prototype: icside_irqprobe(struct expansion_card *ec) | |
136 | * Purpose : detect an active interrupt from card | |
137 | */ | |
138 | static int icside_irqpending_arcin_v6(struct expansion_card *ec) | |
139 | { | |
140 | struct icside_state *state = ec->irq_data; | |
141 | ||
142 | return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 || | |
143 | readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1; | |
144 | } | |
145 | ||
146 | static const expansioncard_ops_t icside_ops_arcin_v6 = { | |
147 | .irqenable = icside_irqenable_arcin_v6, | |
148 | .irqdisable = icside_irqdisable_arcin_v6, | |
149 | .irqpending = icside_irqpending_arcin_v6, | |
150 | }; | |
151 | ||
1da177e4 | 152 | #ifdef CONFIG_BLK_DEV_IDEDMA_ICS |
1da177e4 LT |
153 | /* |
154 | * SG-DMA support. | |
155 | * | |
156 | * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers. | |
157 | * There is only one DMA controller per card, which means that only | |
158 | * one drive can be accessed at one time. NOTE! We do not enforce that | |
159 | * here, but we rely on the main IDE driver spotting that both | |
160 | * interfaces use the same IRQ, which should guarantee this. | |
161 | */ | |
162 | ||
1da177e4 LT |
163 | /* |
164 | * Configure the IOMD to give the appropriate timings for the transfer | |
165 | * mode being requested. We take the advice of the ATA standards, and | |
166 | * calculate the cycle time based on the transfer mode, and the EIDE | |
167 | * MW DMA specs that the drive provides in the IDENTIFY command. | |
168 | * | |
169 | * We have the following IOMD DMA modes to choose from: | |
170 | * | |
171 | * Type Active Recovery Cycle | |
172 | * A 250 (250) 312 (550) 562 (800) | |
173 | * B 187 250 437 | |
174 | * C 125 (125) 125 (375) 250 (500) | |
175 | * D 62 125 187 | |
176 | * | |
177 | * (figures in brackets are actual measured timings) | |
178 | * | |
179 | * However, we also need to take care of the read/write active and | |
180 | * recovery timings: | |
181 | * | |
182 | * Read Write | |
183 | * Mode Active -- Recovery -- Cycle IOMD type | |
184 | * MW0 215 50 215 480 A | |
185 | * MW1 80 50 50 150 C | |
186 | * MW2 70 25 25 120 C | |
187 | */ | |
8776168c | 188 | static void icside_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
1da177e4 | 189 | { |
5bfb151f JR |
190 | unsigned long cycle_time; |
191 | int use_dma_info = 0; | |
8776168c | 192 | const u8 xfer_mode = drive->dma_mode; |
1da177e4 | 193 | |
1da177e4 LT |
194 | switch (xfer_mode) { |
195 | case XFER_MW_DMA_2: | |
196 | cycle_time = 250; | |
197 | use_dma_info = 1; | |
198 | break; | |
199 | ||
200 | case XFER_MW_DMA_1: | |
201 | cycle_time = 250; | |
202 | use_dma_info = 1; | |
203 | break; | |
204 | ||
205 | case XFER_MW_DMA_0: | |
206 | cycle_time = 480; | |
207 | break; | |
208 | ||
209 | case XFER_SW_DMA_2: | |
210 | case XFER_SW_DMA_1: | |
211 | case XFER_SW_DMA_0: | |
212 | cycle_time = 480; | |
213 | break; | |
214 | } | |
215 | ||
216 | /* | |
217 | * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should | |
218 | * take care to note the values in the ID... | |
219 | */ | |
4dde4492 BZ |
220 | if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time) |
221 | cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME]; | |
1da177e4 | 222 | |
5bfb151f | 223 | ide_set_drivedata(drive, (void *)cycle_time); |
1da177e4 | 224 | |
1da177e4 | 225 | printk("%s: %s selected (peak %dMB/s)\n", drive->name, |
5bfb151f JR |
226 | ide_xfer_verbose(xfer_mode), |
227 | 2000 / (unsigned long)ide_get_drivedata(drive)); | |
1da177e4 LT |
228 | } |
229 | ||
ac95beed BZ |
230 | static const struct ide_port_ops icside_v6_port_ops = { |
231 | .set_dma_mode = icside_set_dma_mode, | |
ac95beed BZ |
232 | }; |
233 | ||
15ce926a | 234 | static void icside_dma_host_set(ide_drive_t *drive, int on) |
1da177e4 | 235 | { |
1da177e4 LT |
236 | } |
237 | ||
1da177e4 LT |
238 | static int icside_dma_end(ide_drive_t *drive) |
239 | { | |
898ec223 | 240 | ide_hwif_t *hwif = drive->hwif; |
f8341c1c | 241 | struct expansion_card *ec = ECARD_DEV(hwif->dev); |
1da177e4 | 242 | |
f8341c1c | 243 | disable_dma(ec->dma); |
1da177e4 | 244 | |
f8341c1c | 245 | return get_dma_residue(ec->dma) != 0; |
1da177e4 LT |
246 | } |
247 | ||
248 | static void icside_dma_start(ide_drive_t *drive) | |
249 | { | |
898ec223 | 250 | ide_hwif_t *hwif = drive->hwif; |
f8341c1c | 251 | struct expansion_card *ec = ECARD_DEV(hwif->dev); |
1da177e4 LT |
252 | |
253 | /* We can not enable DMA on both channels simultaneously. */ | |
f8341c1c BZ |
254 | BUG_ON(dma_channel_active(ec->dma)); |
255 | enable_dma(ec->dma); | |
1da177e4 LT |
256 | } |
257 | ||
22981694 | 258 | static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) |
1da177e4 | 259 | { |
898ec223 | 260 | ide_hwif_t *hwif = drive->hwif; |
f8341c1c | 261 | struct expansion_card *ec = ECARD_DEV(hwif->dev); |
26839f09 | 262 | struct icside_state *state = ecard_get_drvdata(ec); |
1da177e4 LT |
263 | unsigned int dma_mode; |
264 | ||
22981694 | 265 | if (cmd->tf_flags & IDE_TFLAG_WRITE) |
1da177e4 LT |
266 | dma_mode = DMA_MODE_WRITE; |
267 | else | |
268 | dma_mode = DMA_MODE_READ; | |
269 | ||
270 | /* | |
271 | * We can not enable DMA on both channels. | |
272 | */ | |
f8341c1c | 273 | BUG_ON(dma_channel_active(ec->dma)); |
1da177e4 | 274 | |
1da177e4 LT |
275 | /* |
276 | * Route the DMA signals to the correct interface. | |
277 | */ | |
26839f09 | 278 | writeb(state->sel | hwif->channel, state->ioc_base); |
1da177e4 LT |
279 | |
280 | /* | |
281 | * Select the correct timing for this drive. | |
282 | */ | |
5bfb151f | 283 | set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive)); |
1da177e4 LT |
284 | |
285 | /* | |
286 | * Tell the DMA engine about the SG table and | |
287 | * data direction. | |
288 | */ | |
22981694 | 289 | set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents); |
f8341c1c | 290 | set_dma_mode(ec->dma, dma_mode); |
1da177e4 | 291 | |
1da177e4 LT |
292 | return 0; |
293 | } | |
294 | ||
1da177e4 LT |
295 | static int icside_dma_test_irq(ide_drive_t *drive) |
296 | { | |
898ec223 | 297 | ide_hwif_t *hwif = drive->hwif; |
26839f09 BZ |
298 | struct expansion_card *ec = ECARD_DEV(hwif->dev); |
299 | struct icside_state *state = ecard_get_drvdata(ec); | |
1da177e4 LT |
300 | |
301 | return readb(state->irq_port + | |
302 | (hwif->channel ? | |
303 | ICS_ARCIN_V6_INTRSTAT_2 : | |
304 | ICS_ARCIN_V6_INTRSTAT_1)) & 1; | |
305 | } | |
306 | ||
91432f48 | 307 | static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d) |
1da177e4 | 308 | { |
1da177e4 LT |
309 | hwif->dmatable_cpu = NULL; |
310 | hwif->dmatable_dma = 0; | |
1da177e4 | 311 | |
91432f48 | 312 | return 0; |
1da177e4 | 313 | } |
5e37bdc0 | 314 | |
f37afdac | 315 | static const struct ide_dma_ops icside_v6_dma_ops = { |
5e37bdc0 BZ |
316 | .dma_host_set = icside_dma_host_set, |
317 | .dma_setup = icside_dma_setup, | |
5e37bdc0 BZ |
318 | .dma_start = icside_dma_start, |
319 | .dma_end = icside_dma_end, | |
320 | .dma_test_irq = icside_dma_test_irq, | |
de23ec9c | 321 | .dma_lost_irq = ide_dma_lost_irq, |
5e37bdc0 BZ |
322 | }; |
323 | #else | |
324 | #define icside_v6_dma_ops NULL | |
1da177e4 LT |
325 | #endif |
326 | ||
91432f48 BZ |
327 | static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d) |
328 | { | |
329 | return -EOPNOTSUPP; | |
330 | } | |
331 | ||
9f36d314 | 332 | static void icside_setup_ports(struct ide_hw *hw, void __iomem *base, |
b25afdf1 | 333 | struct cardinfo *info, struct expansion_card *ec) |
1da177e4 LT |
334 | { |
335 | unsigned long port = (unsigned long)base + info->dataoffset; | |
1da177e4 | 336 | |
b25afdf1 BZ |
337 | hw->io_ports.data_addr = port; |
338 | hw->io_ports.error_addr = port + (1 << info->stepping); | |
339 | hw->io_ports.nsect_addr = port + (2 << info->stepping); | |
340 | hw->io_ports.lbal_addr = port + (3 << info->stepping); | |
341 | hw->io_ports.lbam_addr = port + (4 << info->stepping); | |
342 | hw->io_ports.lbah_addr = port + (5 << info->stepping); | |
343 | hw->io_ports.device_addr = port + (6 << info->stepping); | |
344 | hw->io_ports.status_addr = port + (7 << info->stepping); | |
345 | hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset; | |
346 | ||
347 | hw->irq = ec->irq; | |
348 | hw->dev = &ec->dev; | |
1da177e4 LT |
349 | } |
350 | ||
33050ec7 BZ |
351 | static const struct ide_port_info icside_v5_port_info = { |
352 | .host_flags = IDE_HFLAG_NO_DMA, | |
29e52cf7 | 353 | .chipset = ide_acorn, |
33050ec7 BZ |
354 | }; |
355 | ||
d16d7667 | 356 | static int __devinit |
1da177e4 LT |
357 | icside_register_v5(struct icside_state *state, struct expansion_card *ec) |
358 | { | |
1da177e4 | 359 | void __iomem *base; |
48c3c107 | 360 | struct ide_host *host; |
9f36d314 | 361 | struct ide_hw hw, *hws[] = { &hw }; |
8a69580e | 362 | int ret; |
1da177e4 | 363 | |
10bdaaa0 | 364 | base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0); |
1da177e4 LT |
365 | if (!base) |
366 | return -ENOMEM; | |
367 | ||
368 | state->irq_port = base; | |
369 | ||
370 | ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT; | |
371 | ec->irqmask = 1; | |
c7b87f3d RK |
372 | |
373 | ecard_setirq(ec, &icside_ops_arcin_v5, state); | |
1da177e4 LT |
374 | |
375 | /* | |
376 | * Be on the safe side - disable interrupts | |
377 | */ | |
378 | icside_irqdisable_arcin_v5(ec, 0); | |
379 | ||
b25afdf1 BZ |
380 | icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec); |
381 | ||
dca39830 | 382 | host = ide_host_alloc(&icside_v5_port_info, hws, 1); |
48c3c107 | 383 | if (host == NULL) |
1da177e4 | 384 | return -ENODEV; |
1da177e4 | 385 | |
48c3c107 | 386 | state->host = host; |
1da177e4 | 387 | |
26839f09 BZ |
388 | ecard_set_drvdata(ec, state); |
389 | ||
33050ec7 | 390 | ret = ide_host_register(host, &icside_v5_port_info, hws); |
8a69580e BZ |
391 | if (ret) |
392 | goto err_free; | |
1da177e4 LT |
393 | |
394 | return 0; | |
8a69580e BZ |
395 | err_free: |
396 | ide_host_free(host); | |
397 | ecard_set_drvdata(ec, NULL); | |
398 | return ret; | |
1da177e4 LT |
399 | } |
400 | ||
c413b9b9 | 401 | static const struct ide_port_info icside_v6_port_info __initdata = { |
91432f48 | 402 | .init_dma = icside_dma_off_init, |
5e37bdc0 | 403 | .dma_ops = &icside_v6_dma_ops, |
c5dd43ec | 404 | .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO, |
c413b9b9 BZ |
405 | .mwdma_mask = ATA_MWDMA2, |
406 | .swdma_mask = ATA_SWDMA2, | |
29e52cf7 | 407 | .chipset = ide_acorn, |
c413b9b9 BZ |
408 | }; |
409 | ||
d16d7667 | 410 | static int __devinit |
1da177e4 LT |
411 | icside_register_v6(struct icside_state *state, struct expansion_card *ec) |
412 | { | |
1da177e4 | 413 | void __iomem *ioc_base, *easi_base; |
48c3c107 | 414 | struct ide_host *host; |
1da177e4 LT |
415 | unsigned int sel = 0; |
416 | int ret; | |
9f36d314 | 417 | struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] }; |
c413b9b9 | 418 | struct ide_port_info d = icside_v6_port_info; |
1da177e4 | 419 | |
10bdaaa0 | 420 | ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0); |
1da177e4 LT |
421 | if (!ioc_base) { |
422 | ret = -ENOMEM; | |
423 | goto out; | |
424 | } | |
425 | ||
426 | easi_base = ioc_base; | |
427 | ||
428 | if (ecard_resource_flags(ec, ECARD_RES_EASI)) { | |
10bdaaa0 | 429 | easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0); |
1da177e4 LT |
430 | if (!easi_base) { |
431 | ret = -ENOMEM; | |
10bdaaa0 | 432 | goto out; |
1da177e4 LT |
433 | } |
434 | ||
435 | /* | |
436 | * Enable access to the EASI region. | |
437 | */ | |
438 | sel = 1 << 5; | |
439 | } | |
440 | ||
441 | writeb(sel, ioc_base); | |
442 | ||
c7b87f3d | 443 | ecard_setirq(ec, &icside_ops_arcin_v6, state); |
1da177e4 LT |
444 | |
445 | state->irq_port = easi_base; | |
446 | state->ioc_base = ioc_base; | |
26839f09 | 447 | state->sel = sel; |
1da177e4 LT |
448 | |
449 | /* | |
450 | * Be on the safe side - disable interrupts | |
451 | */ | |
452 | icside_irqdisable_arcin_v6(ec, 0); | |
453 | ||
b25afdf1 BZ |
454 | icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec); |
455 | icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec); | |
456 | ||
dca39830 | 457 | host = ide_host_alloc(&d, hws, 2); |
48c3c107 | 458 | if (host == NULL) |
b25afdf1 | 459 | return -ENODEV; |
1da177e4 | 460 | |
48c3c107 | 461 | state->host = host; |
1da177e4 | 462 | |
26839f09 | 463 | ecard_set_drvdata(ec, state); |
1da177e4 | 464 | |
67717e22 | 465 | if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) { |
91432f48 | 466 | d.init_dma = icside_dma_init; |
9c391bae | 467 | d.port_ops = &icside_v6_port_ops; |
5e37bdc0 | 468 | d.dma_ops = NULL; |
91432f48 | 469 | } |
1da177e4 | 470 | |
d224b626 | 471 | ret = ide_host_register(host, &d, hws); |
8a69580e BZ |
472 | if (ret) |
473 | goto err_free; | |
1da177e4 LT |
474 | |
475 | return 0; | |
8a69580e BZ |
476 | err_free: |
477 | ide_host_free(host); | |
478 | if (d.dma_ops) | |
479 | free_dma(ec->dma); | |
480 | ecard_set_drvdata(ec, NULL); | |
481 | out: | |
1da177e4 LT |
482 | return ret; |
483 | } | |
484 | ||
485 | static int __devinit | |
486 | icside_probe(struct expansion_card *ec, const struct ecard_id *id) | |
487 | { | |
488 | struct icside_state *state; | |
489 | void __iomem *idmem; | |
490 | int ret; | |
491 | ||
492 | ret = ecard_request_resources(ec); | |
493 | if (ret) | |
494 | goto out; | |
495 | ||
cc60d8ba | 496 | state = kzalloc(sizeof(struct icside_state), GFP_KERNEL); |
1da177e4 LT |
497 | if (!state) { |
498 | ret = -ENOMEM; | |
499 | goto release; | |
500 | } | |
501 | ||
1da177e4 | 502 | state->type = ICS_TYPE_NOTYPE; |
1da177e4 | 503 | |
10bdaaa0 | 504 | idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0); |
1da177e4 LT |
505 | if (idmem) { |
506 | unsigned int type; | |
507 | ||
508 | type = readb(idmem + ICS_IDENT_OFFSET) & 1; | |
509 | type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1; | |
510 | type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2; | |
511 | type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3; | |
10bdaaa0 | 512 | ecardm_iounmap(ec, idmem); |
1da177e4 LT |
513 | |
514 | state->type = type; | |
515 | } | |
516 | ||
517 | switch (state->type) { | |
518 | case ICS_TYPE_A3IN: | |
519 | dev_warn(&ec->dev, "A3IN unsupported\n"); | |
520 | ret = -ENODEV; | |
521 | break; | |
522 | ||
523 | case ICS_TYPE_A3USER: | |
524 | dev_warn(&ec->dev, "A3USER unsupported\n"); | |
525 | ret = -ENODEV; | |
526 | break; | |
527 | ||
528 | case ICS_TYPE_V5: | |
529 | ret = icside_register_v5(state, ec); | |
530 | break; | |
531 | ||
532 | case ICS_TYPE_V6: | |
533 | ret = icside_register_v6(state, ec); | |
534 | break; | |
535 | ||
536 | default: | |
537 | dev_warn(&ec->dev, "unknown interface type\n"); | |
538 | ret = -ENODEV; | |
539 | break; | |
540 | } | |
541 | ||
26839f09 | 542 | if (ret == 0) |
1da177e4 | 543 | goto out; |
1da177e4 LT |
544 | |
545 | kfree(state); | |
546 | release: | |
547 | ecard_release_resources(ec); | |
548 | out: | |
549 | return ret; | |
550 | } | |
551 | ||
552 | static void __devexit icside_remove(struct expansion_card *ec) | |
553 | { | |
554 | struct icside_state *state = ecard_get_drvdata(ec); | |
555 | ||
556 | switch (state->type) { | |
557 | case ICS_TYPE_V5: | |
558 | /* FIXME: tell IDE to stop using the interface */ | |
559 | ||
560 | /* Disable interrupts */ | |
561 | icside_irqdisable_arcin_v5(ec, 0); | |
562 | break; | |
563 | ||
564 | case ICS_TYPE_V6: | |
565 | /* FIXME: tell IDE to stop using the interface */ | |
566 | if (ec->dma != NO_DMA) | |
567 | free_dma(ec->dma); | |
568 | ||
569 | /* Disable interrupts */ | |
570 | icside_irqdisable_arcin_v6(ec, 0); | |
571 | ||
572 | /* Reset the ROM pointer/EASI selection */ | |
573 | writeb(0, state->ioc_base); | |
574 | break; | |
575 | } | |
576 | ||
577 | ecard_set_drvdata(ec, NULL); | |
1da177e4 | 578 | |
1da177e4 LT |
579 | kfree(state); |
580 | ecard_release_resources(ec); | |
581 | } | |
582 | ||
583 | static void icside_shutdown(struct expansion_card *ec) | |
584 | { | |
585 | struct icside_state *state = ecard_get_drvdata(ec); | |
586 | unsigned long flags; | |
587 | ||
588 | /* | |
589 | * Disable interrupts from this card. We need to do | |
590 | * this before disabling EASI since we may be accessing | |
591 | * this register via that region. | |
592 | */ | |
593 | local_irq_save(flags); | |
594 | ec->ops->irqdisable(ec, 0); | |
595 | local_irq_restore(flags); | |
596 | ||
597 | /* | |
598 | * Reset the ROM pointer so that we can read the ROM | |
599 | * after a soft reboot. This also disables access to | |
600 | * the IDE taskfile via the EASI region. | |
601 | */ | |
602 | if (state->ioc_base) | |
603 | writeb(0, state->ioc_base); | |
604 | } | |
605 | ||
606 | static const struct ecard_id icside_ids[] = { | |
607 | { MANU_ICS, PROD_ICS_IDE }, | |
608 | { MANU_ICS2, PROD_ICS2_IDE }, | |
609 | { 0xffff, 0xffff } | |
610 | }; | |
611 | ||
612 | static struct ecard_driver icside_driver = { | |
613 | .probe = icside_probe, | |
614 | .remove = __devexit_p(icside_remove), | |
615 | .shutdown = icside_shutdown, | |
616 | .id_table = icside_ids, | |
617 | .drv = { | |
618 | .name = "icside", | |
619 | }, | |
620 | }; | |
621 | ||
622 | static int __init icside_init(void) | |
623 | { | |
624 | return ecard_register_driver(&icside_driver); | |
625 | } | |
626 | ||
1137fb67 | 627 | static void __exit icside_exit(void) |
8e27cb11 | 628 | { |
1137fb67 | 629 | ecard_remove_driver(&icside_driver); |
8e27cb11 BZ |
630 | } |
631 | ||
1da177e4 LT |
632 | MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>"); |
633 | MODULE_LICENSE("GPL"); | |
634 | MODULE_DESCRIPTION("ICS IDE driver"); | |
635 | ||
636 | module_init(icside_init); | |
8e27cb11 | 637 | module_exit(icside_exit); |