blob: 0f67f1abbbd3b214793009d150cf2558b87704cc [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 {
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 void __iomem *irq_port;
69 void __iomem *ioc_base;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +020070 unsigned int sel;
Linus Torvalds1da177e2005-04-16 15:20:36 -070071 unsigned int type;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +020072 struct ide_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073};
74
75#define ICS_TYPE_A3IN 0
76#define ICS_TYPE_A3USER 1
77#define ICS_TYPE_V6 3
78#define ICS_TYPE_V5 15
79#define ICS_TYPE_NOTYPE ((unsigned int)-1)
80
81/* ---------------- Version 5 PCB Support Functions --------------------- */
82/* Prototype: icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
83 * Purpose : enable interrupts from card
84 */
85static void icside_irqenable_arcin_v5 (struct expansion_card *ec, int irqnr)
86{
87 struct icside_state *state = ec->irq_data;
88
89 writeb(0, state->irq_port + ICS_ARCIN_V5_INTROFFSET);
90}
91
92/* Prototype: icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
93 * Purpose : disable interrupts from card
94 */
95static void icside_irqdisable_arcin_v5 (struct expansion_card *ec, int irqnr)
96{
97 struct icside_state *state = ec->irq_data;
98
99 readb(state->irq_port + ICS_ARCIN_V5_INTROFFSET);
100}
101
102static const expansioncard_ops_t icside_ops_arcin_v5 = {
103 .irqenable = icside_irqenable_arcin_v5,
104 .irqdisable = icside_irqdisable_arcin_v5,
105};
106
107
108/* ---------------- Version 6 PCB Support Functions --------------------- */
109/* Prototype: icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
110 * Purpose : enable interrupts from card
111 */
112static void icside_irqenable_arcin_v6 (struct expansion_card *ec, int irqnr)
113{
114 struct icside_state *state = ec->irq_data;
115 void __iomem *base = state->irq_port;
116
Bartlomiej Zolnierkiewiczdff88172009-06-07 15:37:06 +0200117 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_1);
118 readb(base + ICS_ARCIN_V6_INTROFFSET_2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Bartlomiej Zolnierkiewiczdff88172009-06-07 15:37:06 +0200120 writeb(0, base + ICS_ARCIN_V6_INTROFFSET_2);
121 readb(base + ICS_ARCIN_V6_INTROFFSET_1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122}
123
124/* Prototype: icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
125 * Purpose : disable interrupts from card
126 */
127static void icside_irqdisable_arcin_v6 (struct expansion_card *ec, int irqnr)
128{
129 struct icside_state *state = ec->irq_data;
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_1);
132 readb(state->irq_port + ICS_ARCIN_V6_INTROFFSET_2);
133}
134
135/* Prototype: icside_irqprobe(struct expansion_card *ec)
136 * Purpose : detect an active interrupt from card
137 */
138static int icside_irqpending_arcin_v6(struct expansion_card *ec)
139{
140 struct icside_state *state = ec->irq_data;
141
142 return readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_1) & 1 ||
143 readb(state->irq_port + ICS_ARCIN_V6_INTRSTAT_2) & 1;
144}
145
146static const expansioncard_ops_t icside_ops_arcin_v6 = {
147 .irqenable = icside_irqenable_arcin_v6,
148 .irqdisable = icside_irqdisable_arcin_v6,
149 .irqpending = icside_irqpending_arcin_v6,
150};
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152#ifdef CONFIG_BLK_DEV_IDEDMA_ICS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153/*
154 * SG-DMA support.
155 *
156 * Similar to the BM-DMA, but we use the RiscPCs IOMD DMA controllers.
157 * There is only one DMA controller per card, which means that only
158 * one drive can be accessed at one time. NOTE! We do not enforce that
159 * here, but we rely on the main IDE driver spotting that both
160 * interfaces use the same IRQ, which should guarantee this.
161 */
162
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163/*
164 * Configure the IOMD to give the appropriate timings for the transfer
165 * mode being requested. We take the advice of the ATA standards, and
166 * calculate the cycle time based on the transfer mode, and the EIDE
167 * MW DMA specs that the drive provides in the IDENTIFY command.
168 *
169 * We have the following IOMD DMA modes to choose from:
170 *
171 * Type Active Recovery Cycle
172 * A 250 (250) 312 (550) 562 (800)
173 * B 187 250 437
174 * C 125 (125) 125 (375) 250 (500)
175 * D 62 125 187
176 *
177 * (figures in brackets are actual measured timings)
178 *
179 * However, we also need to take care of the read/write active and
180 * recovery timings:
181 *
182 * Read Write
183 * Mode Active -- Recovery -- Cycle IOMD type
184 * MW0 215 50 215 480 A
185 * MW1 80 50 50 150 C
186 * MW2 70 25 25 120 C
187 */
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200188static void icside_set_dma_mode(ide_drive_t *drive, const u8 xfer_mode)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189{
Joao Ramos5bfb1512009-06-15 22:13:44 +0200190 unsigned long cycle_time;
191 int use_dma_info = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 switch (xfer_mode) {
194 case XFER_MW_DMA_2:
195 cycle_time = 250;
196 use_dma_info = 1;
197 break;
198
199 case XFER_MW_DMA_1:
200 cycle_time = 250;
201 use_dma_info = 1;
202 break;
203
204 case XFER_MW_DMA_0:
205 cycle_time = 480;
206 break;
207
208 case XFER_SW_DMA_2:
209 case XFER_SW_DMA_1:
210 case XFER_SW_DMA_0:
211 cycle_time = 480;
212 break;
213 }
214
215 /*
216 * If we're going to be doing MW_DMA_1 or MW_DMA_2, we should
217 * take care to note the values in the ID...
218 */
Bartlomiej Zolnierkiewicz4dde4492008-10-10 22:39:19 +0200219 if (use_dma_info && drive->id[ATA_ID_EIDE_DMA_TIME] > cycle_time)
220 cycle_time = drive->id[ATA_ID_EIDE_DMA_TIME];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
Joao Ramos5bfb1512009-06-15 22:13:44 +0200222 ide_set_drivedata(drive, (void *)cycle_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224 printk("%s: %s selected (peak %dMB/s)\n", drive->name,
Joao Ramos5bfb1512009-06-15 22:13:44 +0200225 ide_xfer_verbose(xfer_mode),
226 2000 / (unsigned long)ide_get_drivedata(drive));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227}
228
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200229static const struct ide_port_ops icside_v6_port_ops = {
230 .set_dma_mode = icside_set_dma_mode,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200231};
232
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100233static void icside_dma_host_set(ide_drive_t *drive, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235}
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237static int icside_dma_end(ide_drive_t *drive)
238{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100239 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100240 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100242 disable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100244 return get_dma_residue(ec->dma) != 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245}
246
247static void icside_dma_start(ide_drive_t *drive)
248{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100249 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100250 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251
252 /* We can not enable DMA on both channels simultaneously. */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100253 BUG_ON(dma_channel_active(ec->dma));
254 enable_dma(ec->dma);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255}
256
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100257static int icside_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100259 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100260 struct expansion_card *ec = ECARD_DEV(hwif->dev);
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200261 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 unsigned int dma_mode;
263
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100264 if (cmd->tf_flags & IDE_TFLAG_WRITE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 dma_mode = DMA_MODE_WRITE;
266 else
267 dma_mode = DMA_MODE_READ;
268
269 /*
270 * We can not enable DMA on both channels.
271 */
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100272 BUG_ON(dma_channel_active(ec->dma));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 * Route the DMA signals to the correct interface.
276 */
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200277 writeb(state->sel | hwif->channel, state->ioc_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
279 /*
280 * Select the correct timing for this drive.
281 */
Joao Ramos5bfb1512009-06-15 22:13:44 +0200282 set_dma_speed(ec->dma, (unsigned long)ide_get_drivedata(drive));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283
284 /*
285 * Tell the DMA engine about the SG table and
286 * data direction.
287 */
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100288 set_dma_sg(ec->dma, hwif->sg_table, cmd->sg_nents);
Bartlomiej Zolnierkiewiczf8341c12008-02-01 23:09:32 +0100289 set_dma_mode(ec->dma, dma_mode);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 return 0;
292}
293
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294static int icside_dma_test_irq(ide_drive_t *drive)
295{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100296 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200297 struct expansion_card *ec = ECARD_DEV(hwif->dev);
298 struct icside_state *state = ecard_get_drvdata(ec);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
300 return readb(state->irq_port +
301 (hwif->channel ?
302 ICS_ARCIN_V6_INTRSTAT_2 :
303 ICS_ARCIN_V6_INTRSTAT_1)) & 1;
304}
305
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200306static int icside_dma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 hwif->dmatable_cpu = NULL;
309 hwif->dmatable_dma = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200311 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312}
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200313
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200314static const struct ide_dma_ops icside_v6_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200315 .dma_host_set = icside_dma_host_set,
316 .dma_setup = icside_dma_setup,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200317 .dma_start = icside_dma_start,
318 .dma_end = icside_dma_end,
319 .dma_test_irq = icside_dma_test_irq,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200320 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200321};
322#else
323#define icside_v6_dma_ops NULL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324#endif
325
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200326static int icside_dma_off_init(ide_hwif_t *hwif, const struct ide_port_info *d)
327{
328 return -EOPNOTSUPP;
329}
330
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200331static void icside_setup_ports(struct ide_hw *hw, void __iomem *base,
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200332 struct cardinfo *info, struct expansion_card *ec)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333{
334 unsigned long port = (unsigned long)base + info->dataoffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200336 hw->io_ports.data_addr = port;
337 hw->io_ports.error_addr = port + (1 << info->stepping);
338 hw->io_ports.nsect_addr = port + (2 << info->stepping);
339 hw->io_ports.lbal_addr = port + (3 << info->stepping);
340 hw->io_ports.lbam_addr = port + (4 << info->stepping);
341 hw->io_ports.lbah_addr = port + (5 << info->stepping);
342 hw->io_ports.device_addr = port + (6 << info->stepping);
343 hw->io_ports.status_addr = port + (7 << info->stepping);
344 hw->io_ports.ctl_addr = (unsigned long)base + info->ctrloffset;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200346 hw->irq = ec->irq;
347 hw->dev = &ec->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348}
349
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100350static const struct ide_port_info icside_v5_port_info = {
351 .host_flags = IDE_HFLAG_NO_DMA,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200352 .chipset = ide_acorn,
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100353};
354
Al Virod16d7662008-11-22 17:34:34 +0000355static int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356icside_register_v5(struct icside_state *state, struct expansion_card *ec)
357{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 void __iomem *base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200359 struct ide_host *host;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200360 struct ide_hw hw, *hws[] = { &hw };
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200361 int ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
Russell King10bdaaa2007-05-10 18:40:51 +0100363 base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 if (!base)
365 return -ENOMEM;
366
367 state->irq_port = base;
368
369 ec->irqaddr = base + ICS_ARCIN_V5_INTRSTAT;
370 ec->irqmask = 1;
Russell Kingc7b87f32007-05-10 16:46:13 +0100371
372 ecard_setirq(ec, &icside_ops_arcin_v5, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373
374 /*
375 * Be on the safe side - disable interrupts
376 */
377 icside_irqdisable_arcin_v5(ec, 0);
378
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200379 icside_setup_ports(&hw, base, &icside_cardinfo_v5, ec);
380
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200381 host = ide_host_alloc(&icside_v5_port_info, hws, 1);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200382 if (host == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200385 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200387 ecard_set_drvdata(ec, state);
388
Bartlomiej Zolnierkiewicz33050ec2009-03-27 12:46:17 +0100389 ret = ide_host_register(host, &icside_v5_port_info, hws);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200390 if (ret)
391 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392
393 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200394err_free:
395 ide_host_free(host);
396 ecard_set_drvdata(ec, NULL);
397 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398}
399
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100400static const struct ide_port_info icside_v6_port_info __initdata = {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200401 .init_dma = icside_dma_off_init,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200402 .dma_ops = &icside_v6_dma_ops,
Bartlomiej Zolnierkiewiczc5dd43e2008-04-28 23:44:37 +0200403 .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_MMIO,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100404 .mwdma_mask = ATA_MWDMA2,
405 .swdma_mask = ATA_SWDMA2,
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200406 .chipset = ide_acorn,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100407};
408
Al Virod16d7662008-11-22 17:34:34 +0000409static int __devinit
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410icside_register_v6(struct icside_state *state, struct expansion_card *ec)
411{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 void __iomem *ioc_base, *easi_base;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200413 struct ide_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 unsigned int sel = 0;
415 int ret;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200416 struct ide_hw hw[2], *hws[] = { &hw[0], &hw[1] };
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100417 struct ide_port_info d = icside_v6_port_info;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418
Russell King10bdaaa2007-05-10 18:40:51 +0100419 ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 if (!ioc_base) {
421 ret = -ENOMEM;
422 goto out;
423 }
424
425 easi_base = ioc_base;
426
427 if (ecard_resource_flags(ec, ECARD_RES_EASI)) {
Russell King10bdaaa2007-05-10 18:40:51 +0100428 easi_base = ecardm_iomap(ec, ECARD_RES_EASI, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 if (!easi_base) {
430 ret = -ENOMEM;
Russell King10bdaaa2007-05-10 18:40:51 +0100431 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 }
433
434 /*
435 * Enable access to the EASI region.
436 */
437 sel = 1 << 5;
438 }
439
440 writeb(sel, ioc_base);
441
Russell Kingc7b87f32007-05-10 16:46:13 +0100442 ecard_setirq(ec, &icside_ops_arcin_v6, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443
444 state->irq_port = easi_base;
445 state->ioc_base = ioc_base;
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200446 state->sel = sel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
448 /*
449 * Be on the safe side - disable interrupts
450 */
451 icside_irqdisable_arcin_v6(ec, 0);
452
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200453 icside_setup_ports(&hw[0], easi_base, &icside_cardinfo_v6_1, ec);
454 icside_setup_ports(&hw[1], easi_base, &icside_cardinfo_v6_2, ec);
455
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200456 host = ide_host_alloc(&d, hws, 2);
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200457 if (host == NULL)
Bartlomiej Zolnierkiewiczb25afdf2008-07-16 20:33:41 +0200458 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200460 state->host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200462 ecard_set_drvdata(ec, state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463
Bartlomiej Zolnierkiewicz67717e22008-07-16 20:33:44 +0200464 if (ec->dma != NO_DMA && !request_dma(ec->dma, DRV_NAME)) {
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200465 d.init_dma = icside_dma_init;
Al Viro9c391ba2008-04-27 15:38:23 +0200466 d.port_ops = &icside_v6_port_ops;
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200467 d.dma_ops = NULL;
Bartlomiej Zolnierkiewicz91432f42008-04-26 22:25:23 +0200468 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469
Bartlomiej Zolnierkiewiczd224b622009-02-02 20:12:23 +0100470 ret = ide_host_register(host, &d, hws);
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200471 if (ret)
472 goto err_free;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473
474 return 0;
Bartlomiej Zolnierkiewicz8a695802008-07-23 19:55:59 +0200475err_free:
476 ide_host_free(host);
477 if (d.dma_ops)
478 free_dma(ec->dma);
479 ecard_set_drvdata(ec, NULL);
480out:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 return ret;
482}
483
484static int __devinit
485icside_probe(struct expansion_card *ec, const struct ecard_id *id)
486{
487 struct icside_state *state;
488 void __iomem *idmem;
489 int ret;
490
491 ret = ecard_request_resources(ec);
492 if (ret)
493 goto out;
494
Mariusz Kozlowskicc60d8b2007-08-01 23:46:44 +0200495 state = kzalloc(sizeof(struct icside_state), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 if (!state) {
497 ret = -ENOMEM;
498 goto release;
499 }
500
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 state->type = ICS_TYPE_NOTYPE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502
Russell King10bdaaa2007-05-10 18:40:51 +0100503 idmem = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 if (idmem) {
505 unsigned int type;
506
507 type = readb(idmem + ICS_IDENT_OFFSET) & 1;
508 type |= (readb(idmem + ICS_IDENT_OFFSET + 4) & 1) << 1;
509 type |= (readb(idmem + ICS_IDENT_OFFSET + 8) & 1) << 2;
510 type |= (readb(idmem + ICS_IDENT_OFFSET + 12) & 1) << 3;
Russell King10bdaaa2007-05-10 18:40:51 +0100511 ecardm_iounmap(ec, idmem);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512
513 state->type = type;
514 }
515
516 switch (state->type) {
517 case ICS_TYPE_A3IN:
518 dev_warn(&ec->dev, "A3IN unsupported\n");
519 ret = -ENODEV;
520 break;
521
522 case ICS_TYPE_A3USER:
523 dev_warn(&ec->dev, "A3USER unsupported\n");
524 ret = -ENODEV;
525 break;
526
527 case ICS_TYPE_V5:
528 ret = icside_register_v5(state, ec);
529 break;
530
531 case ICS_TYPE_V6:
532 ret = icside_register_v6(state, ec);
533 break;
534
535 default:
536 dev_warn(&ec->dev, "unknown interface type\n");
537 ret = -ENODEV;
538 break;
539 }
540
Bartlomiej Zolnierkiewicz26839f02008-07-16 20:33:40 +0200541 if (ret == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543
544 kfree(state);
545 release:
546 ecard_release_resources(ec);
547 out:
548 return ret;
549}
550
551static void __devexit icside_remove(struct expansion_card *ec)
552{
553 struct icside_state *state = ecard_get_drvdata(ec);
554
555 switch (state->type) {
556 case ICS_TYPE_V5:
557 /* FIXME: tell IDE to stop using the interface */
558
559 /* Disable interrupts */
560 icside_irqdisable_arcin_v5(ec, 0);
561 break;
562
563 case ICS_TYPE_V6:
564 /* FIXME: tell IDE to stop using the interface */
565 if (ec->dma != NO_DMA)
566 free_dma(ec->dma);
567
568 /* Disable interrupts */
569 icside_irqdisable_arcin_v6(ec, 0);
570
571 /* Reset the ROM pointer/EASI selection */
572 writeb(0, state->ioc_base);
573 break;
574 }
575
576 ecard_set_drvdata(ec, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 kfree(state);
579 ecard_release_resources(ec);
580}
581
582static void icside_shutdown(struct expansion_card *ec)
583{
584 struct icside_state *state = ecard_get_drvdata(ec);
585 unsigned long flags;
586
587 /*
588 * Disable interrupts from this card. We need to do
589 * this before disabling EASI since we may be accessing
590 * this register via that region.
591 */
592 local_irq_save(flags);
593 ec->ops->irqdisable(ec, 0);
594 local_irq_restore(flags);
595
596 /*
597 * Reset the ROM pointer so that we can read the ROM
598 * after a soft reboot. This also disables access to
599 * the IDE taskfile via the EASI region.
600 */
601 if (state->ioc_base)
602 writeb(0, state->ioc_base);
603}
604
605static const struct ecard_id icside_ids[] = {
606 { MANU_ICS, PROD_ICS_IDE },
607 { MANU_ICS2, PROD_ICS2_IDE },
608 { 0xffff, 0xffff }
609};
610
611static struct ecard_driver icside_driver = {
612 .probe = icside_probe,
613 .remove = __devexit_p(icside_remove),
614 .shutdown = icside_shutdown,
615 .id_table = icside_ids,
616 .drv = {
617 .name = "icside",
618 },
619};
620
621static int __init icside_init(void)
622{
623 return ecard_register_driver(&icside_driver);
624}
625
Al Viro1137fb62008-10-26 05:40:26 +0000626static void __exit icside_exit(void)
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200627{
Al Viro1137fb62008-10-26 05:40:26 +0000628 ecard_remove_driver(&icside_driver);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200629}
630
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
632MODULE_LICENSE("GPL");
633MODULE_DESCRIPTION("ICS IDE driver");
634
635module_init(icside_init);
Bartlomiej Zolnierkiewicz8e27cb12008-07-24 22:53:27 +0200636module_exit(icside_exit);