blob: 321d98b0bed299a1a73e738e9d40bc308af80ef0 [file] [log] [blame]
Russell King73b6a2b2007-05-03 09:55:52 +01001#include <linux/kernel.h>
2#include <linux/module.h>
3#include <linux/init.h>
4#include <linux/blkdev.h>
5#include <scsi/scsi_host.h>
6#include <linux/ata.h>
7#include <linux/libata.h>
8
9#include <asm/dma.h>
10#include <asm/ecard.h>
11
12#define DRV_NAME "pata_icside"
13
14#define ICS_IDENT_OFFSET 0x2280
15
16#define ICS_ARCIN_V5_INTRSTAT 0x0000
17#define ICS_ARCIN_V5_INTROFFSET 0x0004
18
19#define ICS_ARCIN_V6_INTROFFSET_1 0x2200
20#define ICS_ARCIN_V6_INTRSTAT_1 0x2290
21#define ICS_ARCIN_V6_INTROFFSET_2 0x3200
22#define ICS_ARCIN_V6_INTRSTAT_2 0x3290
23
24struct portinfo {
25 unsigned int dataoffset;
26 unsigned int ctrloffset;
27 unsigned int stepping;
28};
29
30static const struct portinfo pata_icside_portinfo_v5 = {
31 .dataoffset = 0x2800,
32 .ctrloffset = 0x2b80,
33 .stepping = 6,
34};
35
36static const struct portinfo pata_icside_portinfo_v6_1 = {
37 .dataoffset = 0x2000,
38 .ctrloffset = 0x2380,
39 .stepping = 6,
40};
41
42static const struct portinfo pata_icside_portinfo_v6_2 = {
43 .dataoffset = 0x3000,
44 .ctrloffset = 0x3380,
45 .stepping = 6,
46};
47
48#define PATA_ICSIDE_MAX_SG 128
49
50struct pata_icside_state {
51 void __iomem *irq_port;
52 void __iomem *ioc_base;
53 unsigned int type;
54 unsigned int dma;
55 struct {
56 u8 port_sel;
57 u8 disabled;
58 unsigned int speed[ATA_MAX_DEVICES];
59 } port[2];
60 struct scatterlist sg[PATA_ICSIDE_MAX_SG];
61};
62
Russell Kingf95637d2007-05-10 19:32:36 +010063struct pata_icside_info {
64 struct pata_icside_state *state;
65 struct expansion_card *ec;
66 void __iomem *base;
67 void __iomem *irqaddr;
68 unsigned int irqmask;
69 const expansioncard_ops_t *irqops;
70 unsigned int mwdma_mask;
71 unsigned int nr_ports;
72 const struct portinfo *port[2];
73};
74
Russell King73b6a2b2007-05-03 09:55:52 +010075#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: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
83 * Purpose : enable interrupts from card
84 */
85static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
86{
87 struct pata_icside_state *state = ec->irq_data;
88
89 writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
90}
91
92/* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
93 * Purpose : disable interrupts from card
94 */
95static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
96{
97 struct pata_icside_state *state = ec->irq_data;
98
99 readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
100}
101
102static const expansioncard_ops_t pata_icside_ops_arcin_v5 = {
103 .irqenable = pata_icside_irqenable_arcin_v5,
104 .irqdisable = pata_icside_irqdisable_arcin_v5,
105};
106
107
108/* ---------------- Version 6 PCB Support Functions --------------------- */
109/* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
110 * Purpose : enable interrupts from card
111 */
112static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
113{
114 struct pata_icside_state *state = ec->irq_data;
115 void __iomem *base = state->irq_port;
116
117 if (!state->port[0].disabled)
118 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
119 if (!state->port[1].disabled)
120 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
121}
122
123/* Prototype: pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
124 * Purpose : disable interrupts from card
125 */
126static void pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
127{
128 struct pata_icside_state *state = ec->irq_data;
129
130 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
131 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
132}
133
134/* Prototype: pata_icside_irqprobe(struct expansion_card *ec)
135 * Purpose : detect an active interrupt from card
136 */
137static int pata_icside_irqpending_arcin_v6(struct expansion_card *ec)
138{
139 struct pata_icside_state *state = ec->irq_data;
140
141 return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
142 readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
143}
144
145static const expansioncard_ops_t pata_icside_ops_arcin_v6 = {
146 .irqenable = pata_icside_irqenable_arcin_v6,
147 .irqdisable = pata_icside_irqdisable_arcin_v6,
148 .irqpending = pata_icside_irqpending_arcin_v6,
149};
150
151
152/*
153 * SG-DMA support.
154 *
155 * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
156 * There is only one DMA controller per card, which means that only
157 * one drive can be accessed at one time. NOTE! We do not enforce that
158 * here, but we rely on the main IDE driver spotting that both
159 * interfaces use the same IRQ, which should guarantee this.
160 */
161
162/*
163 * Configure the IOMD to give the appropriate timings for the transfer
164 * mode being requested. We take the advice of the ATA standards, and
165 * calculate the cycle time based on the transfer mode, and the EIDE
166 * MW DMA specs that the drive provides in the IDENTIFY command.
167 *
168 * We have the following IOMD DMA modes to choose from:
169 *
170 * Type Active Recovery Cycle
171 * A 250 (250) 312 (550) 562 (800)
172 * B 187 (200) 250 (550) 437 (750)
173 * C 125 (125) 125 (375) 250 (500)
174 * D 62 (50) 125 (375) 187 (425)
175 *
176 * (figures in brackets are actual measured timings on DIOR/DIOW)
177 *
178 * However, we also need to take care of the read/write active and
179 * recovery timings:
180 *
181 * Read Write
182 * Mode Active -- Recovery -- Cycle IOMD type
183 * MW0 215 50 215 480 A
184 * MW1 80 50 50 150 C
185 * MW2 70 25 25 120 C
186 */
187static void pata_icside_set_dmamode(struct ata_port *ap, struct ata_device *adev)
188{
189 struct pata_icside_state *state = ap->host->private_data;
190 struct ata_timing t;
191 unsigned int cycle;
192 char iomd_type;
193
194 /*
195 * DMA is based on a 16MHz clock
196 */
197 if (ata_timing_compute(adev, adev->dma_mode, &t, 1000, 1))
198 return;
199
200 /*
201 * Choose the IOMD cycle timing which ensure that the interface
202 * satisfies the measured active, recovery and cycle times.
203 */
204 if (t.active <= 50 && t.recover <= 375 && t.cycle <= 425)
205 iomd_type = 'D', cycle = 187;
206 else if (t.active <= 125 && t.recover <= 375 && t.cycle <= 500)
207 iomd_type = 'C', cycle = 250;
208 else if (t.active <= 200 && t.recover <= 550 && t.cycle <= 750)
209 iomd_type = 'B', cycle = 437;
210 else
211 iomd_type = 'A', cycle = 562;
212
213 ata_dev_printk(adev, KERN_INFO, "timings: act %dns rec %dns cyc %dns (%c)\n",
214 t.active, t.recover, t.cycle, iomd_type);
215
216 state->port[ap->port_no].speed[adev->devno] = cycle;
217}
218
219static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc)
220{
221 struct ata_port *ap = qc->ap;
222 struct pata_icside_state *state = ap->host->private_data;
223 struct scatterlist *sg, *rsg = state->sg;
224 unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE;
225
226 /*
227 * We are simplex; BUG if we try to fiddle with DMA
228 * while it's active.
229 */
230 BUG_ON(dma_channel_active(state->dma));
231
232 /*
233 * Copy ATAs scattered sg list into a contiguous array of sg
234 */
235 ata_for_each_sg(sg, qc) {
236 memcpy(rsg, sg, sizeof(*sg));
237 rsg++;
238 }
239
240 /*
241 * Route the DMA signals to the correct interface
242 */
243 writeb(state->port[ap->port_no].port_sel, state->ioc_base);
244
245 set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]);
246 set_dma_sg(state->dma, state->sg, rsg - state->sg);
247 set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ);
248
249 /* issue r/w command */
250 ap->ops->exec_command(ap, &qc->tf);
251}
252
253static void pata_icside_bmdma_start(struct ata_queued_cmd *qc)
254{
255 struct ata_port *ap = qc->ap;
256 struct pata_icside_state *state = ap->host->private_data;
257
258 BUG_ON(dma_channel_active(state->dma));
259 enable_dma(state->dma);
260}
261
262static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
263{
264 struct ata_port *ap = qc->ap;
265 struct pata_icside_state *state = ap->host->private_data;
266
267 disable_dma(state->dma);
268
269 /* see ata_bmdma_stop */
270 ata_altstatus(ap);
271}
272
273static u8 pata_icside_bmdma_status(struct ata_port *ap)
274{
275 struct pata_icside_state *state = ap->host->private_data;
276 void __iomem *irq_port;
277
278 irq_port = state->irq_port + (ap->port_no ? ICS_ARCIN_V6_INTRSTAT_2 :
279 ICS_ARCIN_V6_INTRSTAT_1);
280
281 return readb(irq_port) & 1 ? ATA_DMA_INTR : 0;
282}
283
Russell Kingf95637d2007-05-10 19:32:36 +0100284static int icside_dma_init(struct pata_icside_info *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100285{
Russell Kingf95637d2007-05-10 19:32:36 +0100286 struct pata_icside_state *state = info->state;
287 struct expansion_card *ec = info->ec;
Russell King73b6a2b2007-05-03 09:55:52 +0100288 int i;
289
290 for (i = 0; i < ATA_MAX_DEVICES; i++) {
291 state->port[0].speed[i] = 480;
292 state->port[1].speed[i] = 480;
293 }
294
295 if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
296 state->dma = ec->dma;
Russell Kingf95637d2007-05-10 19:32:36 +0100297 info->mwdma_mask = 0x07; /* MW0..2 */
Russell King73b6a2b2007-05-03 09:55:52 +0100298 }
299
300 return 0;
301}
302
303
304static int pata_icside_port_start(struct ata_port *ap)
305{
306 /* No PRD to alloc */
307 return ata_pad_alloc(ap, ap->dev);
308}
309
310static struct scsi_host_template pata_icside_sht = {
311 .module = THIS_MODULE,
312 .name = DRV_NAME,
313 .ioctl = ata_scsi_ioctl,
314 .queuecommand = ata_scsi_queuecmd,
315 .can_queue = ATA_DEF_QUEUE,
316 .this_id = ATA_SHT_THIS_ID,
317 .sg_tablesize = PATA_ICSIDE_MAX_SG,
318 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
319 .emulated = ATA_SHT_EMULATED,
320 .use_clustering = ATA_SHT_USE_CLUSTERING,
321 .proc_name = DRV_NAME,
322 .dma_boundary = ~0, /* no dma boundaries */
323 .slave_configure = ata_scsi_slave_config,
324 .slave_destroy = ata_scsi_slave_destroy,
325 .bios_param = ata_std_bios_param,
326};
327
328/* wish this was exported from libata-core */
329static void ata_dummy_noret(struct ata_port *port)
330{
331}
332
333/*
334 * We need to shut down unused ports to prevent spurious interrupts.
335 * FIXME: the libata core doesn't call this function for PATA interfaces.
336 */
337static void pata_icside_port_disable(struct ata_port *ap)
338{
339 struct pata_icside_state *state = ap->host->private_data;
340
341 ata_port_printk(ap, KERN_ERR, "disabling icside port\n");
342
343 ata_port_disable(ap);
344
345 state->port[ap->port_no].disabled = 1;
346
347 if (state->type == ICS_TYPE_V6) {
348 /*
349 * Disable interrupts from this port, otherwise we
350 * receive spurious interrupts from the floating
351 * interrupt line.
352 */
353 void __iomem *irq_port = state->irq_port +
354 (ap->port_no ? ICS_ARCIN_V6_INTROFFSET_2 : ICS_ARCIN_V6_INTROFFSET_1);
355 readb(irq_port);
356 }
357}
358
359static u8 pata_icside_irq_ack(struct ata_port *ap, unsigned int chk_drq)
360{
361 unsigned int bits = chk_drq ? ATA_BUSY | ATA_DRQ : ATA_BUSY;
362 u8 status;
363
364 status = ata_busy_wait(ap, bits, 1000);
365 if (status & bits)
366 if (ata_msg_err(ap))
367 printk(KERN_ERR "abnormal status 0x%X\n", status);
368
369 if (ata_msg_intr(ap))
370 printk(KERN_INFO "%s: irq ack: drv_stat 0x%X\n",
371 __FUNCTION__, status);
372
373 return status;
374}
375
376static struct ata_port_operations pata_icside_port_ops = {
377 .port_disable = pata_icside_port_disable,
378
379 .set_dmamode = pata_icside_set_dmamode,
380
381 .tf_load = ata_tf_load,
382 .tf_read = ata_tf_read,
383 .exec_command = ata_exec_command,
384 .check_status = ata_check_status,
385 .dev_select = ata_std_dev_select,
386
Russell Kingf95637d2007-05-10 19:32:36 +0100387 .cable_detect = ata_cable_40wire,
388
Russell King73b6a2b2007-05-03 09:55:52 +0100389 .bmdma_setup = pata_icside_bmdma_setup,
390 .bmdma_start = pata_icside_bmdma_start,
391
392 .data_xfer = ata_data_xfer_noirq,
393
394 /* no need to build any PRD tables for DMA */
395 .qc_prep = ata_noop_qc_prep,
396 .qc_issue = ata_qc_issue_prot,
397
398 .freeze = ata_bmdma_freeze,
399 .thaw = ata_bmdma_thaw,
400 .error_handler = ata_bmdma_error_handler,
401 .post_internal_cmd = pata_icside_bmdma_stop,
402
Russell King73b6a2b2007-05-03 09:55:52 +0100403 .irq_clear = ata_dummy_noret,
404 .irq_on = ata_irq_on,
405 .irq_ack = pata_icside_irq_ack,
406
407 .port_start = pata_icside_port_start,
408
409 .bmdma_stop = pata_icside_bmdma_stop,
410 .bmdma_status = pata_icside_bmdma_status,
411};
412
Russell Kingf95637d2007-05-10 19:32:36 +0100413static void __devinit
414pata_icside_setup_ioaddr(struct ata_ioports *ioaddr, void __iomem *base,
415 const struct portinfo *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100416{
Russell King73b6a2b2007-05-03 09:55:52 +0100417 void __iomem *cmd = base + info->dataoffset;
418
419 ioaddr->cmd_addr = cmd;
420 ioaddr->data_addr = cmd + (ATA_REG_DATA << info->stepping);
421 ioaddr->error_addr = cmd + (ATA_REG_ERR << info->stepping);
422 ioaddr->feature_addr = cmd + (ATA_REG_FEATURE << info->stepping);
423 ioaddr->nsect_addr = cmd + (ATA_REG_NSECT << info->stepping);
424 ioaddr->lbal_addr = cmd + (ATA_REG_LBAL << info->stepping);
425 ioaddr->lbam_addr = cmd + (ATA_REG_LBAM << info->stepping);
426 ioaddr->lbah_addr = cmd + (ATA_REG_LBAH << info->stepping);
427 ioaddr->device_addr = cmd + (ATA_REG_DEVICE << info->stepping);
428 ioaddr->status_addr = cmd + (ATA_REG_STATUS << info->stepping);
429 ioaddr->command_addr = cmd + (ATA_REG_CMD << info->stepping);
430
431 ioaddr->ctl_addr = base + info->ctrloffset;
432 ioaddr->altstatus_addr = ioaddr->ctl_addr;
433}
434
Russell Kingf95637d2007-05-10 19:32:36 +0100435static int __devinit pata_icside_register_v5(struct pata_icside_info *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100436{
Russell Kingf95637d2007-05-10 19:32:36 +0100437 struct pata_icside_state *state = info->state;
Russell King73b6a2b2007-05-03 09:55:52 +0100438 void __iomem *base;
439
Russell King10bdaaa2007-05-10 18:40:51 +0100440 base = ecardm_iomap(info->ec, ECARD_RES_MEMC, 0, 0);
Russell King73b6a2b2007-05-03 09:55:52 +0100441 if (!base)
442 return -ENOMEM;
443
444 state->irq_port = base;
445
Russell Kingf95637d2007-05-10 19:32:36 +0100446 info->base = base;
447 info->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
448 info->irqmask = 1;
449 info->irqops = &pata_icside_ops_arcin_v5;
450 info->nr_ports = 1;
451 info->port[0] = &pata_icside_portinfo_v5;
Russell King73b6a2b2007-05-03 09:55:52 +0100452
453 return 0;
454}
455
Russell Kingf95637d2007-05-10 19:32:36 +0100456static int __devinit pata_icside_register_v6(struct pata_icside_info *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100457{
Russell Kingf95637d2007-05-10 19:32:36 +0100458 struct pata_icside_state *state = info->state;
459 struct expansion_card *ec = info->ec;
Russell King73b6a2b2007-05-03 09:55:52 +0100460 void __iomem *ioc_base, *easi_base;
461 unsigned int sel = 0;
Russell King73b6a2b2007-05-03 09:55:52 +0100462
Russell King10bdaaa2007-05-10 18:40:51 +0100463 ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
464 if (!ioc_base)
465 return -ENOMEM;
Russell King73b6a2b2007-05-03 09:55:52 +0100466
467 easi_base = ioc_base;
468
469 if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
Russell King10bdaaa2007-05-10 18:40:51 +0100470 easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
471 if (!easi_base)
472 return -ENOMEM;
Russell King73b6a2b2007-05-03 09:55:52 +0100473
474 /*
475 * Enable access to the EASI region.
476 */
477 sel = 1 << 5;
478 }
479
480 writeb(sel, ioc_base);
481
Russell King73b6a2b2007-05-03 09:55:52 +0100482 state->irq_port = easi_base;
483 state->ioc_base = ioc_base;
484 state->port[0].port_sel = sel;
485 state->port[1].port_sel = sel | 1;
486
487 /*
Russell King73b6a2b2007-05-03 09:55:52 +0100488 * FIXME: work around libata's aversion to calling port_disable.
489 * This permanently disables interrupts on port 0 - bad luck if
490 * you have a drive on that port.
491 */
492 state->port[0].disabled = 1;
493
Russell Kingf95637d2007-05-10 19:32:36 +0100494 info->base = easi_base;
495 info->irqops = &pata_icside_ops_arcin_v6;
496 info->nr_ports = 2;
497 info->port[0] = &pata_icside_portinfo_v6_1;
498 info->port[1] = &pata_icside_portinfo_v6_2;
Russell King73b6a2b2007-05-03 09:55:52 +0100499
Russell Kingf95637d2007-05-10 19:32:36 +0100500 return icside_dma_init(info);
501}
502
503static int __devinit pata_icside_add_ports(struct pata_icside_info *info)
504{
505 struct expansion_card *ec = info->ec;
506 struct ata_host *host;
507 int i;
508
509 if (info->irqaddr) {
510 ec->irqaddr = info->irqaddr;
511 ec->irqmask = info->irqmask;
512 }
513 if (info->irqops)
514 ecard_setirq(ec, info->irqops, info->state);
515
516 /*
517 * Be on the safe side - disable interrupts
518 */
519 ec->ops->irqdisable(ec, ec->irq);
520
521 host = ata_host_alloc(&ec->dev, info->nr_ports);
522 if (!host)
523 return -ENOMEM;
524
525 host->private_data = info->state;
526 host->flags = ATA_HOST_SIMPLEX;
527
528 for (i = 0; i < info->nr_ports; i++) {
529 struct ata_port *ap = host->ports[i];
530
531 ap->pio_mask = 0x1f;
532 ap->mwdma_mask = info->mwdma_mask;
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400533 ap->flags |= ATA_FLAG_SLAVE_POSS;
Russell Kingf95637d2007-05-10 19:32:36 +0100534 ap->ops = &pata_icside_port_ops;
535
536 pata_icside_setup_ioaddr(&ap->ioaddr, info->base, info->port[i]);
537 }
538
539 return ata_host_activate(host, ec->irq, ata_interrupt, 0,
540 &pata_icside_sht);
Russell King73b6a2b2007-05-03 09:55:52 +0100541}
542
543static int __devinit
544pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
545{
546 struct pata_icside_state *state;
Russell Kingf95637d2007-05-10 19:32:36 +0100547 struct pata_icside_info info;
Russell King73b6a2b2007-05-03 09:55:52 +0100548 void __iomem *idmem;
549 int ret;
550
551 ret = ecard_request_resources(ec);
552 if (ret)
553 goto out;
554
Russell Kingf95637d2007-05-10 19:32:36 +0100555 state = devm_kzalloc(&ec->dev, sizeof(*state), GFP_KERNEL);
Russell King73b6a2b2007-05-03 09:55:52 +0100556 if (!state) {
557 ret = -ENOMEM;
558 goto release;
559 }
560
561 state->type = ICS_TYPE_NOTYPE;
562 state->dma = NO_DMA;
563
Russell King10bdaaa2007-05-10 18:40:51 +0100564 idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Russell King73b6a2b2007-05-03 09:55:52 +0100565 if (idmem) {
566 unsigned int type;
567
568 type = readb(idmem + ICS_IDENT_OFFSET) & 1;
569 type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
570 type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
571 type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
Russell King10bdaaa2007-05-10 18:40:51 +0100572 ecardm_iounmap(ec, idmem);
Russell King73b6a2b2007-05-03 09:55:52 +0100573
574 state->type = type;
575 }
576
Russell Kingf95637d2007-05-10 19:32:36 +0100577 memset(&info, 0, sizeof(info));
578 info.state = state;
579 info.ec = ec;
Russell King73b6a2b2007-05-03 09:55:52 +0100580
581 switch (state->type) {
582 case ICS_TYPE_A3IN:
583 dev_warn(&ec->dev, "A3IN unsupported\n");
584 ret = -ENODEV;
585 break;
586
587 case ICS_TYPE_A3USER:
588 dev_warn(&ec->dev, "A3USER unsupported\n");
589 ret = -ENODEV;
590 break;
591
592 case ICS_TYPE_V5:
Russell Kingf95637d2007-05-10 19:32:36 +0100593 ret = pata_icside_register_v5(&info);
Russell King73b6a2b2007-05-03 09:55:52 +0100594 break;
595
596 case ICS_TYPE_V6:
Russell Kingf95637d2007-05-10 19:32:36 +0100597 ret = pata_icside_register_v6(&info);
Russell King73b6a2b2007-05-03 09:55:52 +0100598 break;
599
600 default:
601 dev_warn(&ec->dev, "unknown interface type\n");
602 ret = -ENODEV;
603 break;
604 }
605
606 if (ret == 0)
Russell Kingf95637d2007-05-10 19:32:36 +0100607 ret = pata_icside_add_ports(&info);
Russell King73b6a2b2007-05-03 09:55:52 +0100608
609 if (ret == 0)
610 goto out;
611
Russell King73b6a2b2007-05-03 09:55:52 +0100612 release:
613 ecard_release_resources(ec);
614 out:
615 return ret;
616}
617
618static void pata_icside_shutdown(struct expansion_card *ec)
619{
620 struct ata_host *host = ecard_get_drvdata(ec);
621 unsigned long flags;
622
623 /*
624 * Disable interrupts from this card. We need to do
625 * this before disabling EASI since we may be accessing
626 * this register via that region.
627 */
628 local_irq_save(flags);
Russell Kingc7b87f32007-05-10 16:46:13 +0100629 ec->ops->irqdisable(ec, ec->irq);
Russell King73b6a2b2007-05-03 09:55:52 +0100630 local_irq_restore(flags);
631
632 /*
633 * Reset the ROM pointer so that we can read the ROM
634 * after a soft reboot. This also disables access to
635 * the IDE taskfile via the EASI region.
636 */
637 if (host) {
638 struct pata_icside_state *state = host->private_data;
639 if (state->ioc_base)
640 writeb(0, state->ioc_base);
641 }
642}
643
644static void __devexit pata_icside_remove(struct expansion_card *ec)
645{
646 struct ata_host *host = ecard_get_drvdata(ec);
647 struct pata_icside_state *state = host->private_data;
648
649 ata_host_detach(host);
650
651 pata_icside_shutdown(ec);
652
653 /*
654 * don't NULL out the drvdata - devres/libata wants it
655 * to free the ata_host structure.
656 */
Russell King73b6a2b2007-05-03 09:55:52 +0100657 if (state->dma != NO_DMA)
658 free_dma(state->dma);
Russell King73b6a2b2007-05-03 09:55:52 +0100659
Russell King73b6a2b2007-05-03 09:55:52 +0100660 ecard_release_resources(ec);
661}
662
663static const struct ecard_id pata_icside_ids[] = {
664 { MANU_ICS, PROD_ICS_IDE },
665 { MANU_ICS2, PROD_ICS2_IDE },
666 { 0xffff, 0xffff }
667};
668
669static struct ecard_driver pata_icside_driver = {
670 .probe = pata_icside_probe,
671 .remove = __devexit_p(pata_icside_remove),
672 .shutdown = pata_icside_shutdown,
673 .id_table = pata_icside_ids,
674 .drv = {
675 .name = DRV_NAME,
676 },
677};
678
679static int __init pata_icside_init(void)
680{
681 return ecard_register_driver(&pata_icside_driver);
682}
683
684static void __exit pata_icside_exit(void)
685{
686 ecard_remove_driver(&pata_icside_driver);
687}
688
689MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
690MODULE_LICENSE("GPL");
691MODULE_DESCRIPTION("ICS PATA driver");
692
693module_init(pata_icside_init);
694module_exit(pata_icside_exit);