blob: c5269fa1f73328980bce11497850ba4d6497b281 [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{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100169 ide_hwif_t *hwif = drive->hwif;
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{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100287 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100288 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100290 disable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100292 return get_dma_residue(ec->dma) != 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293}
294
295static void icside_dma_start(ide_drive_t *drive)
296{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100297 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100298 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
300 /* We can not enable DMA on both channels simultaneously. */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100301 BUG_ON(dma_channel_active(ec->dma));
302 enable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303}
304
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100305static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100307 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100308 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200309 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 unsigned int dma_mode;
311
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100312 if (cmd->tf_flags & IDE_TFLAG_WRITE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 dma_mode = DMA_MODE_WRITE;
314 else
315 dma_mode = DMA_MODE_READ;
316
317 /*
318 * We can not enable DMA on both channels.
319 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100320 BUG_ON(dma_channel_active(ec->dma));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 /*
323 * Ensure that we have the right interrupt routed.
324 */
325 icside_maskproc(drive, 0);
326
327 /*
328 * Route the DMA signals to the correct interface.
329 */
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200330 writeb(state->sel | hwif->channel, state->ioc_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
332 /*
333 * Select the correct timing for this drive.
334 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100335 set_dma_speed(ec->dma, drive->drive_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
337 /*
338 * Tell the DMA engine about the SG table and
339 * data direction.
340 */
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100341 set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100342 set_dma_mode(ec->dma, dma_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 return 0;
345}
346
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347static int icside_dma_test_irq(ide_drive_t *drive)
348{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100349 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200350 struct expansion_card *ec = ECARD_DEV(hwif->dev);
351 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
353 return readb(state->irq_port +
354 (hwif->channel ?
355 ICS_ARCIN_V6_INTRSTAT_2 :
356 ICS_ARCIN_V6_INTRSTAT_1)) & 1;
357}
358
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200359static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 hwif->dmatable_cpu = NULL;
362 hwif->dmatable_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200364 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365}
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200366
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200367static const struct ide_dma_ops icside_v6_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200368 .dma_host_set = icside_dma_host_set,
369 .dma_setup = icside_dma_setup,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200370 .dma_start = icside_dma_start,
371 .dma_end = icside_dma_end,
372 .dma_test_irq = icside_dma_test_irq,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200373 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200374};
375#else
376#define icside_v6_dma_ops NULL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377#endif
378
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200379static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
380{
381 return -EOPNOTSUPP;
382}
383
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200384static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200385 struct cardinfo *info, struct expansion_card *ec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386{
387 unsigned long port = (unsigned long)base + info->dataoffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200389 hw->io_ports.data_addr = port;
390 hw->io_ports.error_addr = port + (1 << info->stepping);
391 hw->io_ports.nsect_addr = port + (2 << info->stepping);
392 hw->io_ports.lbal_addr = port + (3 << info->stepping);
393 hw->io_ports.lbam_addr = port + (4 << info->stepping);
394 hw->io_ports.lbah_addr = port + (5 << info->stepping);
395 hw->io_ports.device_addr = port + (6 << info->stepping);
396 hw->io_ports.status_addr = port + (7 << info->stepping);
397 hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200399 hw->irq = ec->irq;
400 hw->dev = &ec->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401}
402
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100403static const struct ide_port_info icside_v5_port_info = {
404 .host_flags = IDE_HFLAG_NO_DMA,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200405 .chipset = ide_acorn,
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100406};
407
Al Virod16d7662008-11-22 17:34:34 +0000408static int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409icside_register_v5(struct icside_state *state, struct expansion_card *ec)
410{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 void __iomem *base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200412 struct ide_host *host;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200413 struct ide_hw hw, *hws[] = { &hw };
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200414 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415
Russell King10bdaaa2007-05-10 18:40:51 +0100416 base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 if (!base)
418 return -ENOMEM;
419
420 state->irq_port = base;
421
422 ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
423 ec->irqmask = 1;
Russell Kingc7b87f32007-05-10 16:46:13 +0100424
425 ecard_setirq(ec, &icside_ops_arcin_v5, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426
427 /*
428 * Be on the safe side - disable interrupts
429 */
430 icside_irqdisable_arcin_v5(ec, 0);
431
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200432 icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
433
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200434 host = ide_host_alloc(&icside_v5_port_info, hws, 1);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200435 if (host == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200438 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200440 ecard_set_drvdata(ec, state);
441
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100442 ret = ide_host_register(host, &icside_v5_port_info, hws);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200443 if (ret)
444 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445
446 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200447err_free:
448 ide_host_free(host);
449 ecard_set_drvdata(ec, NULL);
450 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451}
452
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100453static const struct ide_port_info icside_v6_port_info __initdata = {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200454 .init_dma = icside_dma_off_init,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200455 .port_ops = &icside_v6_no_dma_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200456 .dma_ops = &icside_v6_dma_ops,
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +0200457 .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100458 .mwdma_mask = ATA_MWDMA2,
459 .swdma_mask = ATA_SWDMA2,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200460 .chipset = ide_acorn,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100461};
462
Al Virod16d7662008-11-22 17:34:34 +0000463static int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464icside_register_v6(struct icside_state *state, struct expansion_card *ec)
465{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 void __iomem *ioc_base, *easi_base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200467 struct ide_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 unsigned int sel = 0;
469 int ret;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200470 struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100471 struct ide_port_info d = icside_v6_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472
Russell King10bdaaa2007-05-10 18:40:51 +0100473 ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 if (!ioc_base) {
475 ret = -ENOMEM;
476 goto out;
477 }
478
479 easi_base = ioc_base;
480
481 if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
Russell King10bdaaa2007-05-10 18:40:51 +0100482 easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 if (!easi_base) {
484 ret = -ENOMEM;
Russell King10bdaaa2007-05-10 18:40:51 +0100485 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 }
487
488 /*
489 * Enable access to the EASI region.
490 */
491 sel = 1 << 5;
492 }
493
494 writeb(sel, ioc_base);
495
Russell Kingc7b87f32007-05-10 16:46:13 +0100496 ecard_setirq(ec, &icside_ops_arcin_v6, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497
498 state->irq_port = easi_base;
499 state->ioc_base = ioc_base;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200500 state->sel = sel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
502 /*
503 * Be on the safe side - disable interrupts
504 */
505 icside_irqdisable_arcin_v6(ec, 0);
506
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200507 icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
508 icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
509
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200510 host = ide_host_alloc(&d, hws, 2);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200511 if (host == NULL)
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200512 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200514 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200516 ecard_set_drvdata(ec, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517
Bartlomiej Zolnierkiewicz67717e22008-07-16 20:33:44 +0200518 if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200519 d.init_dma = icside_dma_init;
Al Viro9c391ba2008-04-27 15:38:23 +0200520 d.port_ops = &icside_v6_port_ops;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200521 d.dma_ops = NULL;
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200522 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523
Bartlomiej Zolnierkiewiczd224b622009-02-02 20:12:23 +0100524 ret = ide_host_register(host, &d, hws);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200525 if (ret)
526 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527
528 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200529err_free:
530 ide_host_free(host);
531 if (d.dma_ops)
532 free_dma(ec->dma);
533 ecard_set_drvdata(ec, NULL);
534out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 return ret;
536}
537
538static int __devinit
539icside_probe(struct expansion_card *ec, const struct ecard_id *id)
540{
541 struct icside_state *state;
542 void __iomem *idmem;
543 int ret;
544
545 ret = ecard_request_resources(ec);
546 if (ret)
547 goto out;
548
Mariusz Kozlowskicc60d8b2007-08-01 23:46:44 +0200549 state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 if (!state) {
551 ret = -ENOMEM;
552 goto release;
553 }
554
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 state->type = ICS_TYPE_NOTYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556
Russell King10bdaaa2007-05-10 18:40:51 +0100557 idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 if (idmem) {
559 unsigned int type;
560
561 type = readb(idmem + ICS_IDENT_OFFSET) & 1;
562 type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
563 type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
564 type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
Russell King10bdaaa2007-05-10 18:40:51 +0100565 ecardm_iounmap(ec, idmem);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566
567 state->type = type;
568 }
569
570 switch (state->type) {
571 case ICS_TYPE_A3IN:
572 dev_warn(&ec->dev, "A3IN unsupported\n");
573 ret = -ENODEV;
574 break;
575
576 case ICS_TYPE_A3USER:
577 dev_warn(&ec->dev, "A3USER unsupported\n");
578 ret = -ENODEV;
579 break;
580
581 case ICS_TYPE_V5:
582 ret = icside_register_v5(state, ec);
583 break;
584
585 case ICS_TYPE_V6:
586 ret = icside_register_v6(state, ec);
587 break;
588
589 default:
590 dev_warn(&ec->dev, "unknown interface type\n");
591 ret = -ENODEV;
592 break;
593 }
594
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200595 if (ret == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597
598 kfree(state);
599 release:
600 ecard_release_resources(ec);
601 out:
602 return ret;
603}
604
605static void __devexit icside_remove(struct expansion_card *ec)
606{
607 struct icside_state *state = ecard_get_drvdata(ec);
608
609 switch (state->type) {
610 case ICS_TYPE_V5:
611 /* FIXME: tell IDE to stop using the interface */
612
613 /* Disable interrupts */
614 icside_irqdisable_arcin_v5(ec, 0);
615 break;
616
617 case ICS_TYPE_V6:
618 /* FIXME: tell IDE to stop using the interface */
619 if (ec->dma != NO_DMA)
620 free_dma(ec->dma);
621
622 /* Disable interrupts */
623 icside_irqdisable_arcin_v6(ec, 0);
624
625 /* Reset the ROM pointer/EASI selection */
626 writeb(0, state->ioc_base);
627 break;
628 }
629
630 ecard_set_drvdata(ec, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 kfree(state);
633 ecard_release_resources(ec);
634}
635
636static void icside_shutdown(struct expansion_card *ec)
637{
638 struct icside_state *state = ecard_get_drvdata(ec);
639 unsigned long flags;
640
641 /*
642 * Disable interrupts from this card. We need to do
643 * this before disabling EASI since we may be accessing
644 * this register via that region.
645 */
646 local_irq_save(flags);
647 ec->ops->irqdisable(ec, 0);
648 local_irq_restore(flags);
649
650 /*
651 * Reset the ROM pointer so that we can read the ROM
652 * after a soft reboot. This also disables access to
653 * the IDE taskfile via the EASI region.
654 */
655 if (state->ioc_base)
656 writeb(0, state->ioc_base);
657}
658
659static const struct ecard_id icside_ids[] = {
660 { MANU_ICS, PROD_ICS_IDE },
661 { MANU_ICS2, PROD_ICS2_IDE },
662 { 0xffff, 0xffff }
663};
664
665static struct ecard_driver icside_driver = {
666 .probe = icside_probe,
667 .remove = __devexit_p(icside_remove),
668 .shutdown = icside_shutdown,
669 .id_table = icside_ids,
670 .drv = {
671 .name = "icside",
672 },
673};
674
675static int __init icside_init(void)
676{
677 return ecard_register_driver(&icside_driver);
678}
679
Al Viro1137fb62008-10-26 05:40:26 +0000680static void __exit icside_exit(void)
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200681{
Al Viro1137fb62008-10-26 05:40:26 +0000682 ecard_remove_driver(&icside_driver);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200683}
684
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
686MODULE_LICENSE("GPL");
687MODULE_DESCRIPTION("ICS IDE driver");
688
689module_init(icside_init);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200690module_exit(icside_exit);