blob: ff16b0eaa2c27b6614b44803bb5949cdf566e2ac [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];
Tejun Heocbcdd872007-08-18 13:14:55 +090073 unsigned long raw_base;
74 unsigned long raw_ioc_base;
Russell Kingf95637d2007-05-10 19:32:36 +010075};
76
Russell King73b6a2b2007-05-03 09:55:52 +010077#define ICS_TYPE_A3IN 0
78#define ICS_TYPE_A3USER 1
79#define ICS_TYPE_V6 3
80#define ICS_TYPE_V5 15
81#define ICS_TYPE_NOTYPE ((unsigned int)-1)
82
83/* ---------------- Version 5 PCB Support Functions --------------------- */
84/* Prototype: pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
85 * Purpose : enable interrupts from card
86 */
87static void pata_icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
88{
89 struct pata_icside_state *state = ec->irq_data;
90
91 writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
92}
93
94/* Prototype: pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
95 * Purpose : disable interrupts from card
96 */
97static void pata_icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
98{
99 struct pata_icside_state *state = ec->irq_data;
100
101 readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
102}
103
104static const expansioncard_ops_t pata_icside_ops_arcin_v5 = {
105 .irqenable = pata_icside_irqenable_arcin_v5,
106 .irqdisable = pata_icside_irqdisable_arcin_v5,
107};
108
109
110/* ---------------- Version 6 PCB Support Functions --------------------- */
111/* Prototype: pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
112 * Purpose : enable interrupts from card
113 */
114static void pata_icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
115{
116 struct pata_icside_state *state = ec->irq_data;
117 void __iomem *base = state->irq_port;
118
119 if (!state->port[0].disabled)
120 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
121 if (!state->port[1].disabled)
122 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
123}
124
125/* Prototype: pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
126 * Purpose : disable interrupts from card
127 */
128static void pata_icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
129{
130 struct pata_icside_state *state = ec->irq_data;
131
132 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
133 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
134}
135
136/* Prototype: pata_icside_irqprobe(struct expansion_card *ec)
137 * Purpose : detect an active interrupt from card
138 */
139static int pata_icside_irqpending_arcin_v6(struct expansion_card *ec)
140{
141 struct pata_icside_state *state = ec->irq_data;
142
143 return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
144 readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
145}
146
147static const expansioncard_ops_t pata_icside_ops_arcin_v6 = {
148 .irqenable = pata_icside_irqenable_arcin_v6,
149 .irqdisable = pata_icside_irqdisable_arcin_v6,
150 .irqpending = pata_icside_irqpending_arcin_v6,
151};
152
153
154/*
155 * SG-DMA support.
156 *
157 * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
158 * There is only one DMA controller per card, which means that only
159 * one drive can be accessed at one time. NOTE! We do not enforce that
160 * here, but we rely on the main IDE driver spotting that both
161 * interfaces use the same IRQ, which should guarantee this.
162 */
163
164/*
165 * Configure the IOMD to give the appropriate timings for the transfer
166 * mode being requested. We take the advice of the ATA standards, and
167 * calculate the cycle time based on the transfer mode, and the EIDE
168 * MW DMA specs that the drive provides in the IDENTIFY command.
169 *
170 * We have the following IOMD DMA modes to choose from:
171 *
172 * Type Active Recovery Cycle
173 * A 250 (250) 312 (550) 562 (800)
174 * B 187 (200) 250 (550) 437 (750)
175 * C 125 (125) 125 (375) 250 (500)
176 * D 62 (50) 125 (375) 187 (425)
177 *
178 * (figures in brackets are actual measured timings on DIOR/DIOW)
179 *
180 * However, we also need to take care of the read/write active and
181 * recovery timings:
182 *
183 * Read Write
184 * Mode Active -- Recovery -- Cycle IOMD type
185 * MW0 215 50 215 480 A
186 * MW1 80 50 50 150 C
187 * MW2 70 25 25 120 C
188 */
189static void pata_icside_set_dmamode(struct ata_port *ap, struct ata_device *adev)
190{
191 struct pata_icside_state *state = ap->host->private_data;
192 struct ata_timing t;
193 unsigned int cycle;
194 char iomd_type;
195
196 /*
197 * DMA is based on a 16MHz clock
198 */
199 if (ata_timing_compute(adev, adev->dma_mode, &t, 1000, 1))
200 return;
201
202 /*
203 * Choose the IOMD cycle timing which ensure that the interface
204 * satisfies the measured active, recovery and cycle times.
205 */
206 if (t.active <= 50 && t.recover <= 375 && t.cycle <= 425)
207 iomd_type = 'D', cycle = 187;
208 else if (t.active <= 125 && t.recover <= 375 && t.cycle <= 500)
209 iomd_type = 'C', cycle = 250;
210 else if (t.active <= 200 && t.recover <= 550 && t.cycle <= 750)
211 iomd_type = 'B', cycle = 437;
212 else
213 iomd_type = 'A', cycle = 562;
214
215 ata_dev_printk(adev, KERN_INFO, "timings: act %dns rec %dns cyc %dns (%c)\n",
216 t.active, t.recover, t.cycle, iomd_type);
217
218 state->port[ap->port_no].speed[adev->devno] = cycle;
219}
220
221static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc)
222{
223 struct ata_port *ap = qc->ap;
224 struct pata_icside_state *state = ap->host->private_data;
225 struct scatterlist *sg, *rsg = state->sg;
226 unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE;
Tejun Heoff2aeb12007-12-05 16:43:11 +0900227 unsigned int si;
Russell King73b6a2b2007-05-03 09:55:52 +0100228
229 /*
230 * We are simplex; BUG if we try to fiddle with DMA
231 * while it's active.
232 */
233 BUG_ON(dma_channel_active(state->dma));
234
235 /*
236 * Copy ATAs scattered sg list into a contiguous array of sg
237 */
Tejun Heoff2aeb12007-12-05 16:43:11 +0900238 for_each_sg(qc->sg, sg, qc->n_elem, si) {
Russell King73b6a2b2007-05-03 09:55:52 +0100239 memcpy(rsg, sg, sizeof(*sg));
240 rsg++;
241 }
242
243 /*
244 * Route the DMA signals to the correct interface
245 */
246 writeb(state->port[ap->port_no].port_sel, state->ioc_base);
247
248 set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]);
249 set_dma_sg(state->dma, state->sg, rsg - state->sg);
250 set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ);
251
252 /* issue r/w command */
253 ap->ops->exec_command(ap, &qc->tf);
254}
255
256static void pata_icside_bmdma_start(struct ata_queued_cmd *qc)
257{
258 struct ata_port *ap = qc->ap;
259 struct pata_icside_state *state = ap->host->private_data;
260
261 BUG_ON(dma_channel_active(state->dma));
262 enable_dma(state->dma);
263}
264
265static void pata_icside_bmdma_stop(struct ata_queued_cmd *qc)
266{
267 struct ata_port *ap = qc->ap;
268 struct pata_icside_state *state = ap->host->private_data;
269
270 disable_dma(state->dma);
271
272 /* see ata_bmdma_stop */
273 ata_altstatus(ap);
274}
275
276static u8 pata_icside_bmdma_status(struct ata_port *ap)
277{
278 struct pata_icside_state *state = ap->host->private_data;
279 void __iomem *irq_port;
280
281 irq_port = state->irq_port + (ap->port_no ? ICS_ARCIN_V6_INTRSTAT_2 :
282 ICS_ARCIN_V6_INTRSTAT_1);
283
284 return readb(irq_port) & 1 ? ATA_DMA_INTR : 0;
285}
286
Russell Kingf95637d2007-05-10 19:32:36 +0100287static int icside_dma_init(struct pata_icside_info *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100288{
Russell Kingf95637d2007-05-10 19:32:36 +0100289 struct pata_icside_state *state = info->state;
290 struct expansion_card *ec = info->ec;
Russell King73b6a2b2007-05-03 09:55:52 +0100291 int i;
292
293 for (i = 0; i < ATA_MAX_DEVICES; i++) {
294 state->port[0].speed[i] = 480;
295 state->port[1].speed[i] = 480;
296 }
297
298 if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
299 state->dma = ec->dma;
Russell Kingf95637d2007-05-10 19:32:36 +0100300 info->mwdma_mask = 0x07; /* MW0..2 */
Russell King73b6a2b2007-05-03 09:55:52 +0100301 }
302
303 return 0;
304}
305
306
Russell King73b6a2b2007-05-03 09:55:52 +0100307static struct scsi_host_template pata_icside_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900308 ATA_BASE_SHT(DRV_NAME),
Russell King73b6a2b2007-05-03 09:55:52 +0100309 .sg_tablesize = PATA_ICSIDE_MAX_SG,
Russell King73b6a2b2007-05-03 09:55:52 +0100310 .dma_boundary = ~0, /* no dma boundaries */
Russell King73b6a2b2007-05-03 09:55:52 +0100311};
312
Al Viroc15fcaf2007-10-14 01:12:39 +0100313static void pata_icside_postreset(struct ata_link *link, unsigned int *classes)
Russell King73b6a2b2007-05-03 09:55:52 +0100314{
Al Viroc15fcaf2007-10-14 01:12:39 +0100315 struct ata_port *ap = link->ap;
Russell King73b6a2b2007-05-03 09:55:52 +0100316 struct pata_icside_state *state = ap->host->private_data;
317
Russell Kingeba84482007-08-06 16:10:54 +0100318 if (classes[0] != ATA_DEV_NONE || classes[1] != ATA_DEV_NONE)
Al Viroc15fcaf2007-10-14 01:12:39 +0100319 return ata_std_postreset(link, classes);
Russell King73b6a2b2007-05-03 09:55:52 +0100320
321 state->port[ap->port_no].disabled = 1;
322
323 if (state->type == ICS_TYPE_V6) {
324 /*
325 * Disable interrupts from this port, otherwise we
326 * receive spurious interrupts from the floating
327 * interrupt line.
328 */
329 void __iomem *irq_port = state->irq_port +
330 (ap->port_no ? ICS_ARCIN_V6_INTROFFSET_2 : ICS_ARCIN_V6_INTROFFSET_1);
331 readb(irq_port);
332 }
333}
334
Russell Kingeba84482007-08-06 16:10:54 +0100335static void pata_icside_error_handler(struct ata_port *ap)
336{
337 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, NULL,
338 pata_icside_postreset);
339}
340
Russell King73b6a2b2007-05-03 09:55:52 +0100341static struct ata_port_operations pata_icside_port_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900342 .inherits = &ata_sff_port_ops,
Russell King73b6a2b2007-05-03 09:55:52 +0100343 /* no need to build any PRD tables for DMA */
344 .qc_prep = ata_noop_qc_prep,
Tejun Heo029cfd62008-03-25 12:22:49 +0900345 .data_xfer = ata_data_xfer_noirq,
346 .bmdma_setup = pata_icside_bmdma_setup,
347 .bmdma_start = pata_icside_bmdma_start,
Russell King73b6a2b2007-05-03 09:55:52 +0100348 .bmdma_stop = pata_icside_bmdma_stop,
349 .bmdma_status = pata_icside_bmdma_status,
Tejun Heo029cfd62008-03-25 12:22:49 +0900350
351 .cable_detect = ata_cable_40wire,
352 .set_dmamode = pata_icside_set_dmamode,
353 .error_handler = pata_icside_error_handler,
354 .post_internal_cmd = pata_icside_bmdma_stop,
Russell King73b6a2b2007-05-03 09:55:52 +0100355};
356
Russell Kingf95637d2007-05-10 19:32:36 +0100357static void __devinit
Tejun Heocbcdd872007-08-18 13:14:55 +0900358pata_icside_setup_ioaddr(struct ata_port *ap, void __iomem *base,
Al Viroc15fcaf2007-10-14 01:12:39 +0100359 struct pata_icside_info *info,
360 const struct portinfo *port)
Russell King73b6a2b2007-05-03 09:55:52 +0100361{
Tejun Heocbcdd872007-08-18 13:14:55 +0900362 struct ata_ioports *ioaddr = &ap->ioaddr;
Al Viroc15fcaf2007-10-14 01:12:39 +0100363 void __iomem *cmd = base + port->dataoffset;
Russell King73b6a2b2007-05-03 09:55:52 +0100364
365 ioaddr->cmd_addr = cmd;
Al Viroc15fcaf2007-10-14 01:12:39 +0100366 ioaddr->data_addr = cmd + (ATA_REG_DATA << port->stepping);
367 ioaddr->error_addr = cmd + (ATA_REG_ERR << port->stepping);
368 ioaddr->feature_addr = cmd + (ATA_REG_FEATURE << port->stepping);
369 ioaddr->nsect_addr = cmd + (ATA_REG_NSECT << port->stepping);
370 ioaddr->lbal_addr = cmd + (ATA_REG_LBAL << port->stepping);
371 ioaddr->lbam_addr = cmd + (ATA_REG_LBAM << port->stepping);
372 ioaddr->lbah_addr = cmd + (ATA_REG_LBAH << port->stepping);
373 ioaddr->device_addr = cmd + (ATA_REG_DEVICE << port->stepping);
374 ioaddr->status_addr = cmd + (ATA_REG_STATUS << port->stepping);
375 ioaddr->command_addr = cmd + (ATA_REG_CMD << port->stepping);
Russell King73b6a2b2007-05-03 09:55:52 +0100376
Al Viroc15fcaf2007-10-14 01:12:39 +0100377 ioaddr->ctl_addr = base + port->ctrloffset;
Russell King73b6a2b2007-05-03 09:55:52 +0100378 ioaddr->altstatus_addr = ioaddr->ctl_addr;
Tejun Heocbcdd872007-08-18 13:14:55 +0900379
380 ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx",
Al Viroc15fcaf2007-10-14 01:12:39 +0100381 info->raw_base + port->dataoffset,
382 info->raw_base + port->ctrloffset);
Tejun Heocbcdd872007-08-18 13:14:55 +0900383
384 if (info->raw_ioc_base)
385 ata_port_desc(ap, "iocbase 0x%lx", info->raw_ioc_base);
Russell King73b6a2b2007-05-03 09:55:52 +0100386}
387
Russell Kingf95637d2007-05-10 19:32:36 +0100388static int __devinit pata_icside_register_v5(struct pata_icside_info *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100389{
Russell Kingf95637d2007-05-10 19:32:36 +0100390 struct pata_icside_state *state = info->state;
Russell King73b6a2b2007-05-03 09:55:52 +0100391 void __iomem *base;
392
Russell King10bdaaa2007-05-10 18:40:51 +0100393 base = ecardm_iomap(info->ec, ECARD_RES_MEMC, 0, 0);
Russell King73b6a2b2007-05-03 09:55:52 +0100394 if (!base)
395 return -ENOMEM;
396
397 state->irq_port = base;
398
Russell Kingf95637d2007-05-10 19:32:36 +0100399 info->base = base;
400 info->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
401 info->irqmask = 1;
402 info->irqops = &pata_icside_ops_arcin_v5;
403 info->nr_ports = 1;
404 info->port[0] = &pata_icside_portinfo_v5;
Russell King73b6a2b2007-05-03 09:55:52 +0100405
Al Viroc15fcaf2007-10-14 01:12:39 +0100406 info->raw_base = ecard_resource_start(info->ec, ECARD_RES_MEMC);
Tejun Heocbcdd872007-08-18 13:14:55 +0900407
Russell King73b6a2b2007-05-03 09:55:52 +0100408 return 0;
409}
410
Russell Kingf95637d2007-05-10 19:32:36 +0100411static int __devinit pata_icside_register_v6(struct pata_icside_info *info)
Russell King73b6a2b2007-05-03 09:55:52 +0100412{
Russell Kingf95637d2007-05-10 19:32:36 +0100413 struct pata_icside_state *state = info->state;
414 struct expansion_card *ec = info->ec;
Russell King73b6a2b2007-05-03 09:55:52 +0100415 void __iomem *ioc_base, *easi_base;
416 unsigned int sel = 0;
Russell King73b6a2b2007-05-03 09:55:52 +0100417
Russell King10bdaaa2007-05-10 18:40:51 +0100418 ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
419 if (!ioc_base)
420 return -ENOMEM;
Russell King73b6a2b2007-05-03 09:55:52 +0100421
422 easi_base = ioc_base;
423
424 if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
Russell King10bdaaa2007-05-10 18:40:51 +0100425 easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
426 if (!easi_base)
427 return -ENOMEM;
Russell King73b6a2b2007-05-03 09:55:52 +0100428
429 /*
430 * Enable access to the EASI region.
431 */
432 sel = 1 << 5;
433 }
434
435 writeb(sel, ioc_base);
436
Russell King73b6a2b2007-05-03 09:55:52 +0100437 state->irq_port = easi_base;
438 state->ioc_base = ioc_base;
439 state->port[0].port_sel = sel;
440 state->port[1].port_sel = sel | 1;
441
Russell Kingf95637d2007-05-10 19:32:36 +0100442 info->base = easi_base;
443 info->irqops = &pata_icside_ops_arcin_v6;
444 info->nr_ports = 2;
445 info->port[0] = &pata_icside_portinfo_v6_1;
446 info->port[1] = &pata_icside_portinfo_v6_2;
Russell King73b6a2b2007-05-03 09:55:52 +0100447
Tejun Heocbcdd872007-08-18 13:14:55 +0900448 info->raw_base = ecard_resource_start(ec, ECARD_RES_EASI);
449 info->raw_ioc_base = ecard_resource_start(ec, ECARD_RES_IOCFAST);
450
Russell Kingf95637d2007-05-10 19:32:36 +0100451 return icside_dma_init(info);
452}
453
454static int __devinit pata_icside_add_ports(struct pata_icside_info *info)
455{
456 struct expansion_card *ec = info->ec;
457 struct ata_host *host;
458 int i;
459
460 if (info->irqaddr) {
461 ec->irqaddr = info->irqaddr;
462 ec->irqmask = info->irqmask;
463 }
464 if (info->irqops)
465 ecard_setirq(ec, info->irqops, info->state);
466
467 /*
468 * Be on the safe side - disable interrupts
469 */
470 ec->ops->irqdisable(ec, ec->irq);
471
472 host = ata_host_alloc(&ec->dev, info->nr_ports);
473 if (!host)
474 return -ENOMEM;
475
476 host->private_data = info->state;
477 host->flags = ATA_HOST_SIMPLEX;
478
479 for (i = 0; i < info->nr_ports; i++) {
480 struct ata_port *ap = host->ports[i];
481
482 ap->pio_mask = 0x1f;
483 ap->mwdma_mask = info->mwdma_mask;
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400484 ap->flags |= ATA_FLAG_SLAVE_POSS;
Russell Kingf95637d2007-05-10 19:32:36 +0100485 ap->ops = &pata_icside_port_ops;
486
Al Viroc15fcaf2007-10-14 01:12:39 +0100487 pata_icside_setup_ioaddr(ap, info->base, info, info->port[i]);
Russell Kingf95637d2007-05-10 19:32:36 +0100488 }
489
490 return ata_host_activate(host, ec->irq, ata_interrupt, 0,
491 &pata_icside_sht);
Russell King73b6a2b2007-05-03 09:55:52 +0100492}
493
494static int __devinit
495pata_icside_probe(struct expansion_card *ec, const struct ecard_id *id)
496{
497 struct pata_icside_state *state;
Russell Kingf95637d2007-05-10 19:32:36 +0100498 struct pata_icside_info info;
Russell King73b6a2b2007-05-03 09:55:52 +0100499 void __iomem *idmem;
500 int ret;
501
502 ret = ecard_request_resources(ec);
503 if (ret)
504 goto out;
505
Russell Kingf95637d2007-05-10 19:32:36 +0100506 state = devm_kzalloc(&ec->dev, sizeof(*state), GFP_KERNEL);
Russell King73b6a2b2007-05-03 09:55:52 +0100507 if (!state) {
508 ret = -ENOMEM;
509 goto release;
510 }
511
512 state->type = ICS_TYPE_NOTYPE;
513 state->dma = NO_DMA;
514
Russell King10bdaaa2007-05-10 18:40:51 +0100515 idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Russell King73b6a2b2007-05-03 09:55:52 +0100516 if (idmem) {
517 unsigned int type;
518
519 type = readb(idmem + ICS_IDENT_OFFSET) & 1;
520 type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
521 type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
522 type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
Russell King10bdaaa2007-05-10 18:40:51 +0100523 ecardm_iounmap(ec, idmem);
Russell King73b6a2b2007-05-03 09:55:52 +0100524
525 state->type = type;
526 }
527
Russell Kingf95637d2007-05-10 19:32:36 +0100528 memset(&info, 0, sizeof(info));
529 info.state = state;
530 info.ec = ec;
Russell King73b6a2b2007-05-03 09:55:52 +0100531
532 switch (state->type) {
533 case ICS_TYPE_A3IN:
534 dev_warn(&ec->dev, "A3IN unsupported\n");
535 ret = -ENODEV;
536 break;
537
538 case ICS_TYPE_A3USER:
539 dev_warn(&ec->dev, "A3USER unsupported\n");
540 ret = -ENODEV;
541 break;
542
543 case ICS_TYPE_V5:
Russell Kingf95637d2007-05-10 19:32:36 +0100544 ret = pata_icside_register_v5(&info);
Russell King73b6a2b2007-05-03 09:55:52 +0100545 break;
546
547 case ICS_TYPE_V6:
Russell Kingf95637d2007-05-10 19:32:36 +0100548 ret = pata_icside_register_v6(&info);
Russell King73b6a2b2007-05-03 09:55:52 +0100549 break;
550
551 default:
552 dev_warn(&ec->dev, "unknown interface type\n");
553 ret = -ENODEV;
554 break;
555 }
556
557 if (ret == 0)
Russell Kingf95637d2007-05-10 19:32:36 +0100558 ret = pata_icside_add_ports(&info);
Russell King73b6a2b2007-05-03 09:55:52 +0100559
560 if (ret == 0)
561 goto out;
562
Russell King73b6a2b2007-05-03 09:55:52 +0100563 release:
564 ecard_release_resources(ec);
565 out:
566 return ret;
567}
568
569static void pata_icside_shutdown(struct expansion_card *ec)
570{
571 struct ata_host *host = ecard_get_drvdata(ec);
572 unsigned long flags;
573
574 /*
575 * Disable interrupts from this card. We need to do
576 * this before disabling EASI since we may be accessing
577 * this register via that region.
578 */
579 local_irq_save(flags);
Russell Kingc7b87f32007-05-10 16:46:13 +0100580 ec->ops->irqdisable(ec, ec->irq);
Russell King73b6a2b2007-05-03 09:55:52 +0100581 local_irq_restore(flags);
582
583 /*
584 * Reset the ROM pointer so that we can read the ROM
585 * after a soft reboot. This also disables access to
586 * the IDE taskfile via the EASI region.
587 */
588 if (host) {
589 struct pata_icside_state *state = host->private_data;
590 if (state->ioc_base)
591 writeb(0, state->ioc_base);
592 }
593}
594
595static void __devexit pata_icside_remove(struct expansion_card *ec)
596{
597 struct ata_host *host = ecard_get_drvdata(ec);
598 struct pata_icside_state *state = host->private_data;
599
600 ata_host_detach(host);
601
602 pata_icside_shutdown(ec);
603
604 /*
605 * don't NULL out the drvdata - devres/libata wants it
606 * to free the ata_host structure.
607 */
Russell King73b6a2b2007-05-03 09:55:52 +0100608 if (state->dma != NO_DMA)
609 free_dma(state->dma);
Russell King73b6a2b2007-05-03 09:55:52 +0100610
Russell King73b6a2b2007-05-03 09:55:52 +0100611 ecard_release_resources(ec);
612}
613
614static const struct ecard_id pata_icside_ids[] = {
615 { MANU_ICS, PROD_ICS_IDE },
616 { MANU_ICS2, PROD_ICS2_IDE },
617 { 0xffff, 0xffff }
618};
619
620static struct ecard_driver pata_icside_driver = {
621 .probe = pata_icside_probe,
622 .remove = __devexit_p(pata_icside_remove),
623 .shutdown = pata_icside_shutdown,
624 .id_table = pata_icside_ids,
625 .drv = {
626 .name = DRV_NAME,
627 },
628};
629
630static int __init pata_icside_init(void)
631{
632 return ecard_register_driver(&pata_icside_driver);
633}
634
635static void __exit pata_icside_exit(void)
636{
637 ecard_remove_driver(&pata_icside_driver);
638}
639
640MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
641MODULE_LICENSE("GPL");
642MODULE_DESCRIPTION("ICS PATA driver");
643
644module_init(pata_icside_init);
645module_exit(pata_icside_exit);