blob: 2d848010499dfed1997e0f0eed459cb0cff847ec [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (c) 1996-2004 Russell King.
3 *
4 * Please note that this platform does not support 32-bit IDE IO.
5 */
6
Linus Torvalds1da177e2005-04-16 15:20:36 -07007#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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#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>
Al Viroba5b55d2007-07-15 21:01:32 +010018#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019
20#include <asm/dma.h>
21#include <asm/ecard.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
Bartlomiej Zolnierkiewicz67717e22008-07-16 20:33:44 +020023#define DRV_NAME "icside"
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#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
43struct cardinfo {
44 unsigned int dataoffset;
45 unsigned int ctrloffset;
46 unsigned int stepping;
47};
48
49static 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
55static 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
61static 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
67struct icside_state {
68 unsigned int channel;
69 unsigned int enabled;
70 void __iomem *irq_port;
71 void __iomem *ioc_base;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +020072 unsigned int sel;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 unsigned int type;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +020074 struct ide_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -070075};
76
77#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: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
85 * Purpose : enable interrupts from card
86 */
87static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
88{
89 struct icside_state *state = ec->irq_data;
90
91 writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
92}
93
94/* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
95 * Purpose : disable interrupts from card
96 */
97static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
98{
99 struct icside_state *state = ec->irq_data;
100
101 readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
102}
103
104static const expansioncard_ops_t icside_ops_arcin_v5 = {
105 .irqenable = icside_irqenable_arcin_v5,
106 .irqdisable = icside_irqdisable_arcin_v5,
107};
108
109
110/* ---------------- Version 6 PCB Support Functions --------------------- */
111/* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
112 * Purpose : enable interrupts from card
113 */
114static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
115{
116 struct icside_state *state = ec->irq_data;
117 void __iomem *base = state->irq_port;
118
119 state->enabled = 1;
120
121 switch (state->channel) {
122 case 0:
123 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
124 readb(base + ICS_ARCIN_V6_INTROFFSET_2);
125 break;
126 case 1:
127 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
128 readb(base + ICS_ARCIN_V6_INTROFFSET_1);
129 break;
130 }
131}
132
133/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
134 * Purpose : disable interrupts from card
135 */
136static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
137{
138 struct icside_state *state = ec->irq_data;
139
140 state->enabled = 0;
141
142 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
143 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
144}
145
146/* Prototype: icside_irqprobe(struct expansion_card *ec)
147 * Purpose : detect an active interrupt from card
148 */
149static int icside_irqpending_arcin_v6(struct expansion_card *ec)
150{
151 struct icside_state *state = ec->irq_data;
152
153 return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
154 readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
155}
156
157static const expansioncard_ops_t icside_ops_arcin_v6 = {
158 .irqenable = icside_irqenable_arcin_v6,
159 .irqdisable = icside_irqdisable_arcin_v6,
160 .irqpending = icside_irqpending_arcin_v6,
161};
162
163/*
164 * Handle routing of interrupts. This is called before
165 * we write the command to the drive.
166 */
167static void icside_maskproc(ide_drive_t *drive, int mask)
168{
169 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200170 struct expansion_card *ec = ECARD_DEV(hwif->dev);
171 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 unsigned long flags;
173
174 local_irq_save(flags);
175
176 state->channel = hwif->channel;
177
178 if (state->enabled && !mask) {
179 switch (hwif->channel) {
180 case 0:
181 writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
182 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
183 break;
184 case 1:
185 writeb(0, state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
186 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
187 break;
188 }
189 } else {
190 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
191 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
192 }
193
194 local_irq_restore(flags);
195}
196
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200197static const struct ide_port_ops icside_v6_no_dma_port_ops = {
198 .maskproc = icside_maskproc,
199};
200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202/*
203 * SG-DMA support.
204 *
205 * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
206 * There is only one DMA controller per card, which means that only
207 * one drive can be accessed at one time. NOTE! We do not enforce that
208 * here, but we rely on the main IDE driver spotting that both
209 * interfaces use the same IRQ, which should guarantee this.
210 */
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212/*
213 * Configure the IOMD to give the appropriate timings for the transfer
214 * mode being requested. We take the advice of the ATA standards, and
215 * calculate the cycle time based on the transfer mode, and the EIDE
216 * MW DMA specs that the drive provides in the IDENTIFY command.
217 *
218 * We have the following IOMD DMA modes to choose from:
219 *
220 * Type Active Recovery Cycle
221 * A 250 (250) 312 (550) 562 (800)
222 * B 187 250 437
223 * C 125 (125) 125 (375) 250 (500)
224 * D 62 125 187
225 *
226 * (figures in brackets are actual measured timings)
227 *
228 * However, we also need to take care of the read/write active and
229 * recovery timings:
230 *
231 * Read Write
232 * Mode Active -- Recovery -- Cycle IOMD type
233 * MW0 215 50 215 480 A
234 * MW1 80 50 50 150 C
235 * MW2 70 25 25 120 C
236 */
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200237static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238{
Bartlomiej Zolnierkiewiczf44ae582007-10-11 23:54:00 +0200239 int cycle_time, use_dma_info = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 switch (xfer_mode) {
242 case XFER_MW_DMA_2:
243 cycle_time = 250;
244 use_dma_info = 1;
245 break;
246
247 case XFER_MW_DMA_1:
248 cycle_time = 250;
249 use_dma_info = 1;
250 break;
251
252 case XFER_MW_DMA_0:
253 cycle_time = 480;
254 break;
255
256 case XFER_SW_DMA_2:
257 case XFER_SW_DMA_1:
258 case XFER_SW_DMA_0:
259 cycle_time = 480;
260 break;
261 }
262
263 /*
264 * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
265 * take care to note the values in the ID...
266 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200267 if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
268 cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
270 drive->drive_data = cycle_time;
271
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 printk("%s: %s selected (peak %dMB/s)\n", drive->name,
273 ide_xfer_verbose(xfer_mode), 2000 / drive->drive_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274}
275
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200276static const struct ide_port_ops icside_v6_port_ops = {
277 .set_dma_mode = icside_set_dma_mode,
278 .maskproc = icside_maskproc,
279};
280
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100281static void icside_dma_host_set(ide_drive_t *drive, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283}
284
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285static int icside_dma_end(ide_drive_t *drive)
286{
287 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100288 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289
290 drive->waiting_for_dma = 0;
291
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100292 disable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293
294 /* Teardown mappings after DMA has completed. */
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +0100295 ide_destroy_dmatable(drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100297 return get_dma_residue(ec->dma) != 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298}
299
300static void icside_dma_start(ide_drive_t *drive)
301{
302 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100303 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
305 /* We can not enable DMA on both channels simultaneously. */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100306 BUG_ON(dma_channel_active(ec->dma));
307 enable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308}
309
310static int icside_dma_setup(ide_drive_t *drive)
311{
312 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100313 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200314 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 struct request *rq = hwif->hwgroup->rq;
316 unsigned int dma_mode;
317
318 if (rq_data_dir(rq))
319 dma_mode = DMA_MODE_WRITE;
320 else
321 dma_mode = DMA_MODE_READ;
322
323 /*
324 * We can not enable DMA on both channels.
325 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100326 BUG_ON(dma_channel_active(ec->dma));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +0100328 hwif->sg_nents = ide_build_sglist(drive, rq);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329
330 /*
331 * Ensure that we have the right interrupt routed.
332 */
333 icside_maskproc(drive, 0);
334
335 /*
336 * Route the DMA signals to the correct interface.
337 */
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200338 writeb(state->sel | hwif->channel, state->ioc_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 /*
341 * Select the correct timing for this drive.
342 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100343 set_dma_speed(ec->dma, drive->drive_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344
345 /*
346 * Tell the DMA engine about the SG table and
347 * data direction.
348 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100349 set_dma_sg(ec->dma, hwif->sg_table, hwif->sg_nents);
350 set_dma_mode(ec->dma, dma_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351
352 drive->waiting_for_dma = 1;
353
354 return 0;
355}
356
357static void icside_dma_exec_cmd(ide_drive_t *drive, u8 cmd)
358{
359 /* issue cmd to drive */
360 ide_execute_command(drive, cmd, ide_dma_intr, 2 * WAIT_CMD, NULL);
361}
362
363static int icside_dma_test_irq(ide_drive_t *drive)
364{
365 ide_hwif_t *hwif = HWIF(drive);
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200366 struct expansion_card *ec = ECARD_DEV(hwif->dev);
367 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368
369 return readb(state->irq_port +
370 (hwif->channel ?
371 ICS_ARCIN_V6_INTRSTAT_2 :
372 ICS_ARCIN_V6_INTRSTAT_1)) & 1;
373}
374
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200375static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 hwif->dmatable_cpu = NULL;
378 hwif->dmatable_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200380 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381}
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200382
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200383static const struct ide_dma_ops icside_v6_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200384 .dma_host_set = icside_dma_host_set,
385 .dma_setup = icside_dma_setup,
386 .dma_exec_cmd = icside_dma_exec_cmd,
387 .dma_start = icside_dma_start,
388 .dma_end = icside_dma_end,
389 .dma_test_irq = icside_dma_test_irq,
Bartlomiej Zolnierkiewiczffa15a62008-10-13 21:39:46 +0200390 .dma_timeout = ide_dma_timeout,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200391 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200392};
393#else
394#define icside_v6_dma_ops NULL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395#endif
396
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200397static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
398{
399 return -EOPNOTSUPP;
400}
401
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200402static void icside_setup_ports(hw_regs_t *hw, void __iomem *base,
403 struct cardinfo *info, struct expansion_card *ec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404{
405 unsigned long port = (unsigned long)base + info->dataoffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200407 hw->io_ports.data_addr = port;
408 hw->io_ports.error_addr = port + (1 << info->stepping);
409 hw->io_ports.nsect_addr = port + (2 << info->stepping);
410 hw->io_ports.lbal_addr = port + (3 << info->stepping);
411 hw->io_ports.lbam_addr = port + (4 << info->stepping);
412 hw->io_ports.lbah_addr = port + (5 << info->stepping);
413 hw->io_ports.device_addr = port + (6 << info->stepping);
414 hw->io_ports.status_addr = port + (7 << info->stepping);
415 hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200417 hw->irq = ec->irq;
418 hw->dev = &ec->dev;
419 hw->chipset = ide_acorn;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420}
421
422static int __init
423icside_register_v5(struct icside_state *state, struct expansion_card *ec)
424{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 void __iomem *base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200426 struct ide_host *host;
Bartlomiej Zolnierkiewiczc97c6ac2008-07-23 19:55:50 +0200427 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200428 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
Russell King10bdaaa2007-05-10 18:40:51 +0100430 base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 if (!base)
432 return -ENOMEM;
433
434 state->irq_port = base;
435
436 ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
437 ec->irqmask = 1;
Russell Kingc7b87f32007-05-10 16:46:13 +0100438
439 ecard_setirq(ec, &icside_ops_arcin_v5, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
441 /*
442 * Be on the safe side - disable interrupts
443 */
444 icside_irqdisable_arcin_v5(ec, 0);
445
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200446 icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
447
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200448 host = ide_host_alloc(NULL, hws);
449 if (host == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200452 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200454 ecard_set_drvdata(ec, state);
455
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200456 ret = ide_host_register(host, NULL, hws);
457 if (ret)
458 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459
460 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200461err_free:
462 ide_host_free(host);
463 ecard_set_drvdata(ec, NULL);
464 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700465}
466
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100467static const struct ide_port_info icside_v6_port_info __initdata = {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200468 .init_dma = icside_dma_off_init,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200469 .port_ops = &icside_v6_no_dma_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200470 .dma_ops = &icside_v6_dma_ops,
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +0200471 .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100472 .mwdma_mask = ATA_MWDMA2,
473 .swdma_mask = ATA_SWDMA2,
474};
475
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476static int __init
477icside_register_v6(struct icside_state *state, struct expansion_card *ec)
478{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 void __iomem *ioc_base, *easi_base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200480 struct ide_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 unsigned int sel = 0;
482 int ret;
Bartlomiej Zolnierkiewiczc97c6ac2008-07-23 19:55:50 +0200483 hw_regs_t hw[2], *hws[] = { &hw[0], NULL, NULL, NULL };
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100484 struct ide_port_info d = icside_v6_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485
Russell King10bdaaa2007-05-10 18:40:51 +0100486 ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487 if (!ioc_base) {
488 ret = -ENOMEM;
489 goto out;
490 }
491
492 easi_base = ioc_base;
493
494 if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
Russell King10bdaaa2007-05-10 18:40:51 +0100495 easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 if (!easi_base) {
497 ret = -ENOMEM;
Russell King10bdaaa2007-05-10 18:40:51 +0100498 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 }
500
501 /*
502 * Enable access to the EASI region.
503 */
504 sel = 1 << 5;
505 }
506
507 writeb(sel, ioc_base);
508
Russell Kingc7b87f32007-05-10 16:46:13 +0100509 ecard_setirq(ec, &icside_ops_arcin_v6, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700510
511 state->irq_port = easi_base;
512 state->ioc_base = ioc_base;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200513 state->sel = sel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514
515 /*
516 * Be on the safe side - disable interrupts
517 */
518 icside_irqdisable_arcin_v6(ec, 0);
519
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200520 icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
521 icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
522
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200523 host = ide_host_alloc(&d, hws);
524 if (host == NULL)
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200525 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200527 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200529 ecard_set_drvdata(ec, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Bartlomiej Zolnierkiewicz67717e22008-07-16 20:33:44 +0200531 if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200532 d.init_dma = icside_dma_init;
Al Viro9c391ba2008-04-27 15:38:23 +0200533 d.port_ops = &icside_v6_port_ops;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200534 d.dma_ops = NULL;
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200535 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200537 ret = ide_host_register(host, NULL, hws);
538 if (ret)
539 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
541 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200542err_free:
543 ide_host_free(host);
544 if (d.dma_ops)
545 free_dma(ec->dma);
546 ecard_set_drvdata(ec, NULL);
547out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548 return ret;
549}
550
551static int __devinit
552icside_probe(struct expansion_card *ec, const struct ecard_id *id)
553{
554 struct icside_state *state;
555 void __iomem *idmem;
556 int ret;
557
558 ret = ecard_request_resources(ec);
559 if (ret)
560 goto out;
561
Mariusz Kozlowskicc60d8b2007-08-01 23:46:44 +0200562 state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 if (!state) {
564 ret = -ENOMEM;
565 goto release;
566 }
567
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 state->type = ICS_TYPE_NOTYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569
Russell King10bdaaa2007-05-10 18:40:51 +0100570 idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571 if (idmem) {
572 unsigned int type;
573
574 type = readb(idmem + ICS_IDENT_OFFSET) & 1;
575 type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
576 type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
577 type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
Russell King10bdaaa2007-05-10 18:40:51 +0100578 ecardm_iounmap(ec, idmem);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579
580 state->type = type;
581 }
582
583 switch (state->type) {
584 case ICS_TYPE_A3IN:
585 dev_warn(&ec->dev, "A3IN unsupported\n");
586 ret = -ENODEV;
587 break;
588
589 case ICS_TYPE_A3USER:
590 dev_warn(&ec->dev, "A3USER unsupported\n");
591 ret = -ENODEV;
592 break;
593
594 case ICS_TYPE_V5:
595 ret = icside_register_v5(state, ec);
596 break;
597
598 case ICS_TYPE_V6:
599 ret = icside_register_v6(state, ec);
600 break;
601
602 default:
603 dev_warn(&ec->dev, "unknown interface type\n");
604 ret = -ENODEV;
605 break;
606 }
607
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200608 if (ret == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610
611 kfree(state);
612 release:
613 ecard_release_resources(ec);
614 out:
615 return ret;
616}
617
618static void __devexit icside_remove(struct expansion_card *ec)
619{
620 struct icside_state *state = ecard_get_drvdata(ec);
621
622 switch (state->type) {
623 case ICS_TYPE_V5:
624 /* FIXME: tell IDE to stop using the interface */
625
626 /* Disable interrupts */
627 icside_irqdisable_arcin_v5(ec, 0);
628 break;
629
630 case ICS_TYPE_V6:
631 /* FIXME: tell IDE to stop using the interface */
632 if (ec->dma != NO_DMA)
633 free_dma(ec->dma);
634
635 /* Disable interrupts */
636 icside_irqdisable_arcin_v6(ec, 0);
637
638 /* Reset the ROM pointer/EASI selection */
639 writeb(0, state->ioc_base);
640 break;
641 }
642
643 ecard_set_drvdata(ec, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 kfree(state);
646 ecard_release_resources(ec);
647}
648
649static void icside_shutdown(struct expansion_card *ec)
650{
651 struct icside_state *state = ecard_get_drvdata(ec);
652 unsigned long flags;
653
654 /*
655 * Disable interrupts from this card. We need to do
656 * this before disabling EASI since we may be accessing
657 * this register via that region.
658 */
659 local_irq_save(flags);
660 ec->ops->irqdisable(ec, 0);
661 local_irq_restore(flags);
662
663 /*
664 * Reset the ROM pointer so that we can read the ROM
665 * after a soft reboot. This also disables access to
666 * the IDE taskfile via the EASI region.
667 */
668 if (state->ioc_base)
669 writeb(0, state->ioc_base);
670}
671
672static const struct ecard_id icside_ids[] = {
673 { MANU_ICS, PROD_ICS_IDE },
674 { MANU_ICS2, PROD_ICS2_IDE },
675 { 0xffff, 0xffff }
676};
677
678static struct ecard_driver icside_driver = {
679 .probe = icside_probe,
680 .remove = __devexit_p(icside_remove),
681 .shutdown = icside_shutdown,
682 .id_table = icside_ids,
683 .drv = {
684 .name = "icside",
685 },
686};
687
688static int __init icside_init(void)
689{
690 return ecard_register_driver(&icside_driver);
691}
692
Al Viro1137fb62008-10-26 05:40:26 +0000693static void __exit icside_exit(void)
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200694{
Al Viro1137fb62008-10-26 05:40:26 +0000695 ecard_remove_driver(&icside_driver);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200696}
697
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
699MODULE_LICENSE("GPL");
700MODULE_DESCRIPTION("ICS IDE driver");
701
702module_init(icside_init);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200703module_exit(icside_exit);