blob: 8716066a2f2b79c1ddeb1236a9b2091d7bd62f63 [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 {
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +000068 unsigned int channel;
69 unsigned int enabled;
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 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
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000119 state->enabled = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000121 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 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131}
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
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000140 state->enabled = 0;
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 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
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000163/*
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 = drive->hwif;
170 struct expansion_card *ec = ECARD_DEV(hwif->dev);
171 struct icside_state *state = ecard_get_drvdata(ec);
172 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
197static 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 Zolnierkiewicz87761682010-01-19 01:45:29 -0800237static void icside_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238{
Joao Ramos5bfb1512009-06-15 22:13:44 +0200239 unsigned long cycle_time;
240 int use_dma_info = 0;
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800241 const u8 xfer_mode = drive->dma_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 switch (xfer_mode) {
244 case XFER_MW_DMA_2:
245 cycle_time = 250;
246 use_dma_info = 1;
247 break;
248
249 case XFER_MW_DMA_1:
250 cycle_time = 250;
251 use_dma_info = 1;
252 break;
253
254 case XFER_MW_DMA_0:
255 cycle_time = 480;
256 break;
257
258 case XFER_SW_DMA_2:
259 case XFER_SW_DMA_1:
260 case XFER_SW_DMA_0:
261 cycle_time = 480;
262 break;
263 }
264
265 /*
266 * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
267 * take care to note the values in the ID...
268 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200269 if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
270 cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
Joao Ramos5bfb1512009-06-15 22:13:44 +0200272 ide_set_drivedata(drive, (void *)cycle_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 printk("%s: %s selected (peak %dMB/s)\n", drive->name,
Joao Ramos5bfb1512009-06-15 22:13:44 +0200275 ide_xfer_verbose(xfer_mode),
276 2000 / (unsigned long)ide_get_drivedata(drive));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277}
278
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200279static const struct ide_port_ops icside_v6_port_ops = {
280 .set_dma_mode = icside_set_dma_mode,
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000281 .maskproc = icside_maskproc,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200282};
283
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100284static void icside_dma_host_set(ide_drive_t *drive, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286}
287
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288static int icside_dma_end(ide_drive_t *drive)
289{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100290 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100291 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100293 disable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100295 return get_dma_residue(ec->dma) != 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
298static void icside_dma_start(ide_drive_t *drive)
299{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100300 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100301 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302
303 /* We can not enable DMA on both channels simultaneously. */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100304 BUG_ON(dma_channel_active(ec->dma));
305 enable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306}
307
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100308static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100310 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100311 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200312 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 unsigned int dma_mode;
314
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100315 if (cmd->tf_flags & IDE_TFLAG_WRITE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 dma_mode = DMA_MODE_WRITE;
317 else
318 dma_mode = DMA_MODE_READ;
319
320 /*
321 * We can not enable DMA on both channels.
322 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100323 BUG_ON(dma_channel_active(ec->dma));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 /*
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000326 * Ensure that we have the right interrupt routed.
327 */
328 icside_maskproc(drive, 0);
329
330 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 * Route the DMA signals to the correct interface.
332 */
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200333 writeb(state->sel | hwif->channel, state->ioc_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334
335 /*
336 * Select the correct timing for this drive.
337 */
Joao Ramos5bfb1512009-06-15 22:13:44 +0200338 set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 /*
341 * Tell the DMA engine about the SG table and
342 * data direction.
343 */
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100344 set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100345 set_dma_mode(ec->dma, dma_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 return 0;
348}
349
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350static int icside_dma_test_irq(ide_drive_t *drive)
351{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100352 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200353 struct expansion_card *ec = ECARD_DEV(hwif->dev);
354 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
356 return readb(state->irq_port +
357 (hwif->channel ?
358 ICS_ARCIN_V6_INTRSTAT_2 :
359 ICS_ARCIN_V6_INTRSTAT_1)) & 1;
360}
361
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200362static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 hwif->dmatable_cpu = NULL;
365 hwif->dmatable_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200367 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368}
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200369
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200370static const struct ide_dma_ops icside_v6_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200371 .dma_host_set = icside_dma_host_set,
372 .dma_setup = icside_dma_setup,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200373 .dma_start = icside_dma_start,
374 .dma_end = icside_dma_end,
375 .dma_test_irq = icside_dma_test_irq,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200376 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200377};
378#else
379#define icside_v6_dma_ops NULL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380#endif
381
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200382static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
383{
384 return -EOPNOTSUPP;
385}
386
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200387static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200388 struct cardinfo *info, struct expansion_card *ec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389{
390 unsigned long port = (unsigned long)base + info->dataoffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200392 hw->io_ports.data_addr = port;
393 hw->io_ports.error_addr = port + (1 << info->stepping);
394 hw->io_ports.nsect_addr = port + (2 << info->stepping);
395 hw->io_ports.lbal_addr = port + (3 << info->stepping);
396 hw->io_ports.lbam_addr = port + (4 << info->stepping);
397 hw->io_ports.lbah_addr = port + (5 << info->stepping);
398 hw->io_ports.device_addr = port + (6 << info->stepping);
399 hw->io_ports.status_addr = port + (7 << info->stepping);
400 hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200402 hw->irq = ec->irq;
403 hw->dev = &ec->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404}
405
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100406static const struct ide_port_info icside_v5_port_info = {
407 .host_flags = IDE_HFLAG_NO_DMA,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200408 .chipset = ide_acorn,
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100409};
410
Al Virod16d7662008-11-22 17:34:34 +0000411static int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412icside_register_v5(struct icside_state *state, struct expansion_card *ec)
413{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 void __iomem *base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200415 struct ide_host *host;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200416 struct ide_hw hw, *hws[] = { &hw };
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200417 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
Russell King10bdaaa2007-05-10 18:40:51 +0100419 base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 if (!base)
421 return -ENOMEM;
422
423 state->irq_port = base;
424
425 ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
426 ec->irqmask = 1;
Russell Kingc7b87f32007-05-10 16:46:13 +0100427
428 ecard_setirq(ec, &icside_ops_arcin_v5, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
430 /*
431 * Be on the safe side - disable interrupts
432 */
433 icside_irqdisable_arcin_v5(ec, 0);
434
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200435 icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
436
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200437 host = ide_host_alloc(&icside_v5_port_info, hws, 1);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200438 if (host == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200441 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200443 ecard_set_drvdata(ec, state);
444
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100445 ret = ide_host_register(host, &icside_v5_port_info, hws);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200446 if (ret)
447 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448
449 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200450err_free:
451 ide_host_free(host);
452 ecard_set_drvdata(ec, NULL);
453 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454}
455
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100456static const struct ide_port_info icside_v6_port_info __initdata = {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200457 .init_dma = icside_dma_off_init,
Bartlomiej Zolnierkiewiczf75d4a22010-01-05 07:07:27 +0000458 .port_ops = &icside_v6_no_dma_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200459 .dma_ops = &icside_v6_dma_ops,
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +0200460 .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100461 .mwdma_mask = ATA_MWDMA2,
462 .swdma_mask = ATA_SWDMA2,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200463 .chipset = ide_acorn,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100464};
465
Al Virod16d7662008-11-22 17:34:34 +0000466static int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467icside_register_v6(struct icside_state *state, struct expansion_card *ec)
468{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 void __iomem *ioc_base, *easi_base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200470 struct ide_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471 unsigned int sel = 0;
472 int ret;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200473 struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100474 struct ide_port_info d = icside_v6_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
Russell King10bdaaa2007-05-10 18:40:51 +0100476 ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477 if (!ioc_base) {
478 ret = -ENOMEM;
479 goto out;
480 }
481
482 easi_base = ioc_base;
483
484 if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
Russell King10bdaaa2007-05-10 18:40:51 +0100485 easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 if (!easi_base) {
487 ret = -ENOMEM;
Russell King10bdaaa2007-05-10 18:40:51 +0100488 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700489 }
490
491 /*
492 * Enable access to the EASI region.
493 */
494 sel = 1 << 5;
495 }
496
497 writeb(sel, ioc_base);
498
Russell Kingc7b87f32007-05-10 16:46:13 +0100499 ecard_setirq(ec, &icside_ops_arcin_v6, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500
501 state->irq_port = easi_base;
502 state->ioc_base = ioc_base;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200503 state->sel = sel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504
505 /*
506 * Be on the safe side - disable interrupts
507 */
508 icside_irqdisable_arcin_v6(ec, 0);
509
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200510 icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
511 icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
512
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200513 host = ide_host_alloc(&d, hws, 2);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200514 if (host == NULL)
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200515 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200517 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200519 ecard_set_drvdata(ec, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520
Bartlomiej Zolnierkiewicz67717e22008-07-16 20:33:44 +0200521 if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200522 d.init_dma = icside_dma_init;
Al Viro9c391ba2008-04-27 15:38:23 +0200523 d.port_ops = &icside_v6_port_ops;
Bartlomiej Zolnierkiewiczacc8dbe72011-10-12 04:45:34 +0000524 } else
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200525 d.dma_ops = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
Bartlomiej Zolnierkiewiczd224b622009-02-02 20:12:23 +0100527 ret = ide_host_register(host, &d, hws);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200528 if (ret)
529 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
531 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200532err_free:
533 ide_host_free(host);
534 if (d.dma_ops)
535 free_dma(ec->dma);
536 ecard_set_drvdata(ec, NULL);
537out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538 return ret;
539}
540
541static int __devinit
542icside_probe(struct expansion_card *ec, const struct ecard_id *id)
543{
544 struct icside_state *state;
545 void __iomem *idmem;
546 int ret;
547
548 ret = ecard_request_resources(ec);
549 if (ret)
550 goto out;
551
Mariusz Kozlowskicc60d8b2007-08-01 23:46:44 +0200552 state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 if (!state) {
554 ret = -ENOMEM;
555 goto release;
556 }
557
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 state->type = ICS_TYPE_NOTYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
Russell King10bdaaa2007-05-10 18:40:51 +0100560 idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 if (idmem) {
562 unsigned int type;
563
564 type = readb(idmem + ICS_IDENT_OFFSET) & 1;
565 type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
566 type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
567 type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
Russell King10bdaaa2007-05-10 18:40:51 +0100568 ecardm_iounmap(ec, idmem);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569
570 state->type = type;
571 }
572
573 switch (state->type) {
574 case ICS_TYPE_A3IN:
575 dev_warn(&ec->dev, "A3IN unsupported\n");
576 ret = -ENODEV;
577 break;
578
579 case ICS_TYPE_A3USER:
580 dev_warn(&ec->dev, "A3USER unsupported\n");
581 ret = -ENODEV;
582 break;
583
584 case ICS_TYPE_V5:
585 ret = icside_register_v5(state, ec);
586 break;
587
588 case ICS_TYPE_V6:
589 ret = icside_register_v6(state, ec);
590 break;
591
592 default:
593 dev_warn(&ec->dev, "unknown interface type\n");
594 ret = -ENODEV;
595 break;
596 }
597
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200598 if (ret == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
601 kfree(state);
602 release:
603 ecard_release_resources(ec);
604 out:
605 return ret;
606}
607
608static void __devexit icside_remove(struct expansion_card *ec)
609{
610 struct icside_state *state = ecard_get_drvdata(ec);
611
612 switch (state->type) {
613 case ICS_TYPE_V5:
614 /* FIXME: tell IDE to stop using the interface */
615
616 /* Disable interrupts */
617 icside_irqdisable_arcin_v5(ec, 0);
618 break;
619
620 case ICS_TYPE_V6:
621 /* FIXME: tell IDE to stop using the interface */
622 if (ec->dma != NO_DMA)
623 free_dma(ec->dma);
624
625 /* Disable interrupts */
626 icside_irqdisable_arcin_v6(ec, 0);
627
628 /* Reset the ROM pointer/EASI selection */
629 writeb(0, state->ioc_base);
630 break;
631 }
632
633 ecard_set_drvdata(ec, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 kfree(state);
636 ecard_release_resources(ec);
637}
638
639static void icside_shutdown(struct expansion_card *ec)
640{
641 struct icside_state *state = ecard_get_drvdata(ec);
642 unsigned long flags;
643
644 /*
645 * Disable interrupts from this card. We need to do
646 * this before disabling EASI since we may be accessing
647 * this register via that region.
648 */
649 local_irq_save(flags);
650 ec->ops->irqdisable(ec, 0);
651 local_irq_restore(flags);
652
653 /*
654 * Reset the ROM pointer so that we can read the ROM
655 * after a soft reboot. This also disables access to
656 * the IDE taskfile via the EASI region.
657 */
658 if (state->ioc_base)
659 writeb(0, state->ioc_base);
660}
661
662static const struct ecard_id icside_ids[] = {
663 { MANU_ICS, PROD_ICS_IDE },
664 { MANU_ICS2, PROD_ICS2_IDE },
665 { 0xffff, 0xffff }
666};
667
668static struct ecard_driver icside_driver = {
669 .probe = icside_probe,
670 .remove = __devexit_p(icside_remove),
671 .shutdown = icside_shutdown,
672 .id_table = icside_ids,
673 .drv = {
674 .name = "icside",
675 },
676};
677
678static int __init icside_init(void)
679{
680 return ecard_register_driver(&icside_driver);
681}
682
Al Viro1137fb62008-10-26 05:40:26 +0000683static void __exit icside_exit(void)
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200684{
Al Viro1137fb62008-10-26 05:40:26 +0000685 ecard_remove_driver(&icside_driver);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200686}
687
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
689MODULE_LICENSE("GPL");
690MODULE_DESCRIPTION("ICS IDE driver");
691
692module_init(icside_init);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200693module_exit(icside_exit);