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26a940e2 | 1 | /* |
26a940e2 PP |
2 | * BRIEF MODULE DESCRIPTION |
3 | * AMD Alchemy Au1xxx IDE interface routines over the Static Bus | |
4 | * | |
5 | * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it under | |
8 | * the terms of the GNU General Public License as published by the Free Software | |
9 | * Foundation; either version 2 of the License, or (at your option) any later | |
10 | * version. | |
11 | * | |
12 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, | |
13 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
14 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR | |
15 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
16 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
17 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
18 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
19 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
20 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
21 | * POSSIBILITY OF SUCH DAMAGE. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License along with | |
24 | * this program; if not, write to the Free Software Foundation, Inc., | |
25 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | * | |
27 | * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE | |
28 | * Interface and Linux Device Driver" Application Note. | |
29 | */ | |
26a940e2 PP |
30 | #include <linux/types.h> |
31 | #include <linux/module.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/delay.h> | |
8f29e650 | 34 | #include <linux/platform_device.h> |
26a940e2 PP |
35 | #include <linux/init.h> |
36 | #include <linux/ide.h> | |
fabd3a22 | 37 | #include <linux/scatterlist.h> |
26a940e2 | 38 | |
26a940e2 PP |
39 | #include <asm/mach-au1x00/au1xxx.h> |
40 | #include <asm/mach-au1x00/au1xxx_dbdma.h> | |
26a940e2 PP |
41 | #include <asm/mach-au1x00/au1xxx_ide.h> |
42 | ||
43 | #define DRV_NAME "au1200-ide" | |
8f29e650 | 44 | #define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" |
26a940e2 | 45 | |
8f29e650 JC |
46 | /* enable the burstmode in the dbdma */ |
47 | #define IDE_AU1XXX_BURSTMODE 1 | |
26a940e2 | 48 | |
8f29e650 | 49 | static _auide_hwif auide_hwif; |
26a940e2 | 50 | |
26a940e2 PP |
51 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
52 | ||
8f29e650 | 53 | void auide_insw(unsigned long port, void *addr, u32 count) |
26a940e2 | 54 | { |
8f29e650 JC |
55 | _auide_hwif *ahwif = &auide_hwif; |
56 | chan_tab_t *ctp; | |
57 | au1x_ddma_desc_t *dp; | |
26a940e2 | 58 | |
8f29e650 JC |
59 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
60 | DDMA_FLAGS_NOIE)) { | |
eb63963a | 61 | printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); |
8f29e650 JC |
62 | return; |
63 | } | |
64 | ctp = *((chan_tab_t **)ahwif->rx_chan); | |
65 | dp = ctp->cur_ptr; | |
66 | while (dp->dscr_cmd0 & DSCR_CMD0_V) | |
67 | ; | |
68 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); | |
26a940e2 PP |
69 | } |
70 | ||
8f29e650 | 71 | void auide_outsw(unsigned long port, void *addr, u32 count) |
26a940e2 | 72 | { |
8f29e650 JC |
73 | _auide_hwif *ahwif = &auide_hwif; |
74 | chan_tab_t *ctp; | |
75 | au1x_ddma_desc_t *dp; | |
26a940e2 | 76 | |
8f29e650 JC |
77 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
78 | count << 1, DDMA_FLAGS_NOIE)) { | |
eb63963a | 79 | printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); |
8f29e650 JC |
80 | return; |
81 | } | |
82 | ctp = *((chan_tab_t **)ahwif->tx_chan); | |
83 | dp = ctp->cur_ptr; | |
84 | while (dp->dscr_cmd0 & DSCR_CMD0_V) | |
85 | ; | |
86 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); | |
26a940e2 PP |
87 | } |
88 | ||
adb1af98 | 89 | static void au1xxx_input_data(ide_drive_t *drive, struct ide_cmd *cmd, |
70f91e0d BZ |
90 | void *buf, unsigned int len) |
91 | { | |
92 | auide_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); | |
93 | } | |
94 | ||
adb1af98 | 95 | static void au1xxx_output_data(ide_drive_t *drive, struct ide_cmd *cmd, |
70f91e0d BZ |
96 | void *buf, unsigned int len) |
97 | { | |
98 | auide_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); | |
99 | } | |
26a940e2 | 100 | #endif |
26a940e2 | 101 | |
26bcb879 | 102 | static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio) |
26a940e2 | 103 | { |
88b2b32b | 104 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
8f29e650 JC |
105 | |
106 | /* set pio mode! */ | |
107 | switch(pio) { | |
108 | case 0: | |
109 | mem_sttime = SBC_IDE_TIMING(PIO0); | |
110 | ||
111 | /* set configuration for RCS2# */ | |
112 | mem_stcfg |= TS_MASK; | |
113 | mem_stcfg &= ~TCSOE_MASK; | |
114 | mem_stcfg &= ~TOECS_MASK; | |
115 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; | |
116 | break; | |
117 | ||
118 | case 1: | |
119 | mem_sttime = SBC_IDE_TIMING(PIO1); | |
120 | ||
121 | /* set configuration for RCS2# */ | |
122 | mem_stcfg |= TS_MASK; | |
123 | mem_stcfg &= ~TCSOE_MASK; | |
124 | mem_stcfg &= ~TOECS_MASK; | |
125 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; | |
126 | break; | |
127 | ||
128 | case 2: | |
129 | mem_sttime = SBC_IDE_TIMING(PIO2); | |
130 | ||
131 | /* set configuration for RCS2# */ | |
132 | mem_stcfg &= ~TS_MASK; | |
133 | mem_stcfg &= ~TCSOE_MASK; | |
134 | mem_stcfg &= ~TOECS_MASK; | |
135 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; | |
136 | break; | |
137 | ||
138 | case 3: | |
139 | mem_sttime = SBC_IDE_TIMING(PIO3); | |
140 | ||
141 | /* set configuration for RCS2# */ | |
142 | mem_stcfg &= ~TS_MASK; | |
143 | mem_stcfg &= ~TCSOE_MASK; | |
144 | mem_stcfg &= ~TOECS_MASK; | |
145 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; | |
146 | ||
147 | break; | |
148 | ||
149 | case 4: | |
150 | mem_sttime = SBC_IDE_TIMING(PIO4); | |
151 | ||
152 | /* set configuration for RCS2# */ | |
153 | mem_stcfg &= ~TS_MASK; | |
154 | mem_stcfg &= ~TCSOE_MASK; | |
155 | mem_stcfg &= ~TOECS_MASK; | |
156 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; | |
157 | break; | |
158 | } | |
159 | ||
160 | au_writel(mem_sttime,MEM_STTIME2); | |
161 | au_writel(mem_stcfg,MEM_STCFG2); | |
26a940e2 PP |
162 | } |
163 | ||
88b2b32b | 164 | static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed) |
26a940e2 | 165 | { |
88b2b32b | 166 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
26a940e2 | 167 | |
8f29e650 | 168 | switch(speed) { |
26a940e2 | 169 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
8f29e650 JC |
170 | case XFER_MW_DMA_2: |
171 | mem_sttime = SBC_IDE_TIMING(MDMA2); | |
172 | ||
173 | /* set configuration for RCS2# */ | |
174 | mem_stcfg &= ~TS_MASK; | |
175 | mem_stcfg &= ~TCSOE_MASK; | |
176 | mem_stcfg &= ~TOECS_MASK; | |
177 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; | |
178 | ||
8f29e650 JC |
179 | break; |
180 | case XFER_MW_DMA_1: | |
181 | mem_sttime = SBC_IDE_TIMING(MDMA1); | |
182 | ||
183 | /* set configuration for RCS2# */ | |
184 | mem_stcfg &= ~TS_MASK; | |
185 | mem_stcfg &= ~TCSOE_MASK; | |
186 | mem_stcfg &= ~TOECS_MASK; | |
187 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; | |
188 | ||
8f29e650 JC |
189 | break; |
190 | case XFER_MW_DMA_0: | |
191 | mem_sttime = SBC_IDE_TIMING(MDMA0); | |
192 | ||
193 | /* set configuration for RCS2# */ | |
194 | mem_stcfg |= TS_MASK; | |
195 | mem_stcfg &= ~TCSOE_MASK; | |
196 | mem_stcfg &= ~TOECS_MASK; | |
197 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; | |
198 | ||
8f29e650 | 199 | break; |
26a940e2 | 200 | #endif |
8f29e650 | 201 | } |
a523a175 | 202 | |
8f29e650 JC |
203 | au_writel(mem_sttime,MEM_STTIME2); |
204 | au_writel(mem_stcfg,MEM_STCFG2); | |
26a940e2 PP |
205 | } |
206 | ||
207 | /* | |
208 | * Multi-Word DMA + DbDMA functions | |
209 | */ | |
26a940e2 | 210 | |
8f29e650 | 211 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
22981694 | 212 | static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd) |
26a940e2 | 213 | { |
898ec223 | 214 | ide_hwif_t *hwif = drive->hwif; |
a536f326 | 215 | _auide_hwif *ahwif = &auide_hwif; |
8f29e650 | 216 | struct scatterlist *sg; |
22981694 BZ |
217 | int i = cmd->sg_nents, count = 0; |
218 | int iswrite = !!(cmd->tf_flags & IDE_TFLAG_WRITE); | |
8f29e650 | 219 | |
8f29e650 JC |
220 | /* Save for interrupt context */ |
221 | ahwif->drive = drive; | |
222 | ||
8f29e650 JC |
223 | /* fill the descriptors */ |
224 | sg = hwif->sg_table; | |
225 | while (i && sg_dma_len(sg)) { | |
226 | u32 cur_addr; | |
227 | u32 cur_len; | |
228 | ||
229 | cur_addr = sg_dma_address(sg); | |
230 | cur_len = sg_dma_len(sg); | |
231 | ||
232 | while (cur_len) { | |
233 | u32 flags = DDMA_FLAGS_NOIE; | |
234 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; | |
235 | ||
236 | if (++count >= PRD_ENTRIES) { | |
237 | printk(KERN_WARNING "%s: DMA table too small\n", | |
238 | drive->name); | |
239 | goto use_pio_instead; | |
240 | } | |
241 | ||
242 | /* Lets enable intr for the last descriptor only */ | |
243 | if (1==i) | |
244 | flags = DDMA_FLAGS_IE; | |
245 | else | |
246 | flags = DDMA_FLAGS_NOIE; | |
247 | ||
248 | if (iswrite) { | |
249 | if(!put_source_flags(ahwif->tx_chan, | |
45711f1a | 250 | (void*) sg_virt(sg), |
8f29e650 JC |
251 | tc, flags)) { |
252 | printk(KERN_ERR "%s failed %d\n", | |
eb63963a | 253 | __func__, __LINE__); |
26a940e2 | 254 | } |
8f29e650 | 255 | } else |
26a940e2 | 256 | { |
8f29e650 | 257 | if(!put_dest_flags(ahwif->rx_chan, |
45711f1a | 258 | (void*) sg_virt(sg), |
8f29e650 JC |
259 | tc, flags)) { |
260 | printk(KERN_ERR "%s failed %d\n", | |
eb63963a | 261 | __func__, __LINE__); |
26a940e2 | 262 | } |
8f29e650 | 263 | } |
26a940e2 | 264 | |
8f29e650 JC |
265 | cur_addr += tc; |
266 | cur_len -= tc; | |
267 | } | |
55c16a70 | 268 | sg = sg_next(sg); |
8f29e650 JC |
269 | i--; |
270 | } | |
26a940e2 | 271 | |
8f29e650 JC |
272 | if (count) |
273 | return 1; | |
26a940e2 | 274 | |
8f29e650 | 275 | use_pio_instead: |
062f9f02 | 276 | ide_destroy_dmatable(drive); |
26a940e2 | 277 | |
8f29e650 | 278 | return 0; /* revert to PIO for this request */ |
26a940e2 PP |
279 | } |
280 | ||
281 | static int auide_dma_end(ide_drive_t *drive) | |
282 | { | |
e295b8d2 | 283 | ide_destroy_dmatable(drive); |
26a940e2 | 284 | |
8f29e650 | 285 | return 0; |
26a940e2 PP |
286 | } |
287 | ||
288 | static void auide_dma_start(ide_drive_t *drive ) | |
289 | { | |
26a940e2 PP |
290 | } |
291 | ||
26a940e2 | 292 | |
22981694 | 293 | static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd) |
b65fac32 | 294 | { |
22981694 BZ |
295 | if (auide_build_dmatable(drive, cmd) == 0) { |
296 | ide_map_sg(drive, cmd); | |
8f29e650 JC |
297 | return 1; |
298 | } | |
26a940e2 | 299 | |
8f29e650 JC |
300 | drive->waiting_for_dma = 1; |
301 | return 0; | |
26a940e2 PP |
302 | } |
303 | ||
26a940e2 | 304 | static int auide_dma_test_irq(ide_drive_t *drive) |
c67c216d | 305 | { |
8f29e650 JC |
306 | /* If dbdma didn't execute the STOP command yet, the |
307 | * active bit is still set | |
26a940e2 | 308 | */ |
8f29e650 JC |
309 | drive->waiting_for_dma++; |
310 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { | |
311 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ | |
26a940e2 | 312 | complete\n", drive->name); |
8f29e650 JC |
313 | return 1; |
314 | } | |
315 | udelay(10); | |
316 | return 0; | |
26a940e2 PP |
317 | } |
318 | ||
15ce926a | 319 | static void auide_dma_host_set(ide_drive_t *drive, int on) |
26a940e2 | 320 | { |
26a940e2 PP |
321 | } |
322 | ||
53e62d3a | 323 | static void auide_ddma_tx_callback(int irq, void *param) |
26a940e2 | 324 | { |
8f29e650 JC |
325 | _auide_hwif *ahwif = (_auide_hwif*)param; |
326 | ahwif->drive->waiting_for_dma = 0; | |
26a940e2 PP |
327 | } |
328 | ||
53e62d3a | 329 | static void auide_ddma_rx_callback(int irq, void *param) |
26a940e2 | 330 | { |
8f29e650 JC |
331 | _auide_hwif *ahwif = (_auide_hwif*)param; |
332 | ahwif->drive->waiting_for_dma = 0; | |
333 | } | |
334 | ||
335 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ | |
26a940e2 | 336 | |
8f29e650 JC |
337 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
338 | { | |
339 | dev->dev_id = dev_id; | |
fcbd3b4b | 340 | dev->dev_physaddr = (u32)IDE_PHYS_ADDR; |
8f29e650 JC |
341 | dev->dev_intlevel = 0; |
342 | dev->dev_intpolarity = 0; | |
343 | dev->dev_tsize = tsize; | |
344 | dev->dev_devwidth = devwidth; | |
345 | dev->dev_flags = flags; | |
26a940e2 PP |
346 | } |
347 | ||
5e37bdc0 | 348 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
f37afdac | 349 | static const struct ide_dma_ops au1xxx_dma_ops = { |
5e37bdc0 BZ |
350 | .dma_host_set = auide_dma_host_set, |
351 | .dma_setup = auide_dma_setup, | |
5e37bdc0 BZ |
352 | .dma_start = auide_dma_start, |
353 | .dma_end = auide_dma_end, | |
354 | .dma_test_irq = auide_dma_test_irq, | |
de23ec9c | 355 | .dma_lost_irq = ide_dma_lost_irq, |
5e37bdc0 BZ |
356 | }; |
357 | ||
85528659 BZ |
358 | static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d) |
359 | { | |
a536f326 | 360 | _auide_hwif *auide = &auide_hwif; |
8f29e650 JC |
361 | dbdev_tab_t source_dev_tab, target_dev_tab; |
362 | u32 dev_id, tsize, devwidth, flags; | |
26a940e2 | 363 | |
fcbd3b4b | 364 | dev_id = IDE_DDMA_REQ; |
26a940e2 | 365 | |
f629b38b BZ |
366 | tsize = 8; /* 1 */ |
367 | devwidth = 32; /* 16 */ | |
26a940e2 | 368 | |
8f29e650 JC |
369 | #ifdef IDE_AU1XXX_BURSTMODE |
370 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; | |
26a940e2 | 371 | #else |
8f29e650 | 372 | flags = DEV_FLAGS_SYNC; |
26a940e2 PP |
373 | #endif |
374 | ||
8f29e650 JC |
375 | /* setup dev_tab for tx channel */ |
376 | auide_init_dbdma_dev( &source_dev_tab, | |
377 | dev_id, | |
378 | tsize, devwidth, DEV_FLAGS_OUT | flags); | |
379 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
380 | ||
381 | auide_init_dbdma_dev( &source_dev_tab, | |
382 | dev_id, | |
383 | tsize, devwidth, DEV_FLAGS_IN | flags); | |
384 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
385 | ||
386 | /* We also need to add a target device for the DMA */ | |
387 | auide_init_dbdma_dev( &target_dev_tab, | |
388 | (u32)DSCR_CMD0_ALWAYS, | |
389 | tsize, devwidth, DEV_FLAGS_ANYUSE); | |
390 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); | |
391 | ||
392 | /* Get a channel for TX */ | |
393 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, | |
394 | auide->tx_dev_id, | |
395 | auide_ddma_tx_callback, | |
396 | (void*)auide); | |
397 | ||
398 | /* Get a channel for RX */ | |
399 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, | |
400 | auide->target_dev_id, | |
401 | auide_ddma_rx_callback, | |
402 | (void*)auide); | |
403 | ||
404 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, | |
405 | NUM_DESCRIPTORS); | |
406 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, | |
407 | NUM_DESCRIPTORS); | |
2bbd57ca BZ |
408 | |
409 | /* FIXME: check return value */ | |
410 | (void)ide_allocate_dma_engine(hwif); | |
8f29e650 JC |
411 | |
412 | au1xxx_dbdma_start( auide->tx_chan ); | |
413 | au1xxx_dbdma_start( auide->rx_chan ); | |
414 | ||
415 | return 0; | |
416 | } | |
26a940e2 | 417 | #else |
85528659 | 418 | static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d) |
8f29e650 | 419 | { |
a536f326 | 420 | _auide_hwif *auide = &auide_hwif; |
8f29e650 JC |
421 | dbdev_tab_t source_dev_tab; |
422 | int flags; | |
26a940e2 | 423 | |
8f29e650 JC |
424 | #ifdef IDE_AU1XXX_BURSTMODE |
425 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; | |
426 | #else | |
427 | flags = DEV_FLAGS_SYNC; | |
26a940e2 | 428 | #endif |
26a940e2 | 429 | |
8f29e650 JC |
430 | /* setup dev_tab for tx channel */ |
431 | auide_init_dbdma_dev( &source_dev_tab, | |
432 | (u32)DSCR_CMD0_ALWAYS, | |
433 | 8, 32, DEV_FLAGS_OUT | flags); | |
434 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
435 | ||
436 | auide_init_dbdma_dev( &source_dev_tab, | |
437 | (u32)DSCR_CMD0_ALWAYS, | |
438 | 8, 32, DEV_FLAGS_IN | flags); | |
439 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
440 | ||
441 | /* Get a channel for TX */ | |
442 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, | |
443 | auide->tx_dev_id, | |
444 | NULL, | |
445 | (void*)auide); | |
446 | ||
447 | /* Get a channel for RX */ | |
448 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, | |
449 | DSCR_CMD0_ALWAYS, | |
450 | NULL, | |
451 | (void*)auide); | |
452 | ||
453 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, | |
454 | NUM_DESCRIPTORS); | |
455 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, | |
456 | NUM_DESCRIPTORS); | |
457 | ||
458 | au1xxx_dbdma_start( auide->tx_chan ); | |
459 | au1xxx_dbdma_start( auide->rx_chan ); | |
460 | ||
461 | return 0; | |
26a940e2 | 462 | } |
8f29e650 | 463 | #endif |
26a940e2 PP |
464 | |
465 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) | |
466 | { | |
8f29e650 | 467 | int i; |
4c3032d8 | 468 | unsigned long *ata_regs = hw->io_ports_array; |
8f29e650 JC |
469 | |
470 | /* FIXME? */ | |
4c3032d8 | 471 | for (i = 0; i < 8; i++) |
fcbd3b4b | 472 | *ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT); |
8f29e650 JC |
473 | |
474 | /* set the Alternative Status register */ | |
fcbd3b4b | 475 | *ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT); |
26a940e2 PP |
476 | } |
477 | ||
374e042c BZ |
478 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
479 | static const struct ide_tp_ops au1xxx_tp_ops = { | |
480 | .exec_command = ide_exec_command, | |
481 | .read_status = ide_read_status, | |
482 | .read_altstatus = ide_read_altstatus, | |
374e042c BZ |
483 | |
484 | .set_irq = ide_set_irq, | |
485 | ||
486 | .tf_load = ide_tf_load, | |
487 | .tf_read = ide_tf_read, | |
488 | ||
489 | .input_data = au1xxx_input_data, | |
490 | .output_data = au1xxx_output_data, | |
491 | }; | |
492 | #endif | |
493 | ||
ac95beed BZ |
494 | static const struct ide_port_ops au1xxx_port_ops = { |
495 | .set_pio_mode = au1xxx_set_pio_mode, | |
496 | .set_dma_mode = auide_set_dma_mode, | |
ac95beed BZ |
497 | }; |
498 | ||
c413b9b9 | 499 | static const struct ide_port_info au1xxx_port_info = { |
85528659 | 500 | .init_dma = auide_ddma_init, |
374e042c BZ |
501 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
502 | .tp_ops = &au1xxx_tp_ops, | |
503 | #endif | |
ac95beed | 504 | .port_ops = &au1xxx_port_ops, |
5e37bdc0 BZ |
505 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
506 | .dma_ops = &au1xxx_dma_ops, | |
507 | #endif | |
c413b9b9 | 508 | .host_flags = IDE_HFLAG_POST_SET_MODE | |
807b90d0 | 509 | IDE_HFLAG_NO_IO_32BIT | |
c413b9b9 BZ |
510 | IDE_HFLAG_UNMASK_IRQS, |
511 | .pio_mask = ATA_PIO4, | |
512 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA | |
513 | .mwdma_mask = ATA_MWDMA2, | |
514 | #endif | |
515 | }; | |
516 | ||
7a192ec3 | 517 | static int au_ide_probe(struct platform_device *dev) |
26a940e2 | 518 | { |
8f29e650 | 519 | _auide_hwif *ahwif = &auide_hwif; |
26a940e2 | 520 | struct resource *res; |
48c3c107 | 521 | struct ide_host *host; |
26a940e2 | 522 | int ret = 0; |
c97c6aca | 523 | hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; |
26a940e2 PP |
524 | |
525 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) | |
8f29e650 | 526 | char *mode = "MWDMA2"; |
26a940e2 | 527 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
8f29e650 | 528 | char *mode = "PIO+DDMA(offload)"; |
26a940e2 PP |
529 | #endif |
530 | ||
8f29e650 | 531 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
7a192ec3 | 532 | ahwif->irq = platform_get_irq(dev, 0); |
26a940e2 | 533 | |
7a192ec3 | 534 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
26a940e2 PP |
535 | |
536 | if (res == NULL) { | |
7a192ec3 | 537 | pr_debug("%s %d: no base address\n", DRV_NAME, dev->id); |
26a940e2 | 538 | ret = -ENODEV; |
48944738 DV |
539 | goto out; |
540 | } | |
541 | if (ahwif->irq < 0) { | |
7a192ec3 | 542 | pr_debug("%s %d: no IRQ\n", DRV_NAME, dev->id); |
48944738 | 543 | ret = -ENODEV; |
26a940e2 PP |
544 | goto out; |
545 | } | |
546 | ||
b4dcaea3 | 547 | if (!request_mem_region(res->start, res->end - res->start + 1, |
7a192ec3 | 548 | dev->name)) { |
26a940e2 | 549 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
8f29e650 | 550 | ret = -EBUSY; |
26a940e2 | 551 | goto out; |
8f29e650 | 552 | } |
26a940e2 | 553 | |
b4dcaea3 | 554 | ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1); |
26a940e2 PP |
555 | if (ahwif->regbase == 0) { |
556 | ret = -ENOMEM; | |
557 | goto out; | |
558 | } | |
559 | ||
9239b333 BZ |
560 | memset(&hw, 0, sizeof(hw)); |
561 | auide_setup_ports(&hw, ahwif); | |
aa79a2fa | 562 | hw.irq = ahwif->irq; |
7a192ec3 | 563 | hw.dev = &dev->dev; |
aa79a2fa BZ |
564 | hw.chipset = ide_au1xxx; |
565 | ||
6f904d01 BZ |
566 | ret = ide_host_add(&au1xxx_port_info, hws, &host); |
567 | if (ret) | |
48c3c107 | 568 | goto out; |
5cbf79cd | 569 | |
48c3c107 | 570 | auide_hwif.hwif = host->ports[0]; |
5cbf79cd | 571 | |
7a192ec3 | 572 | platform_set_drvdata(dev, host); |
26a940e2 | 573 | |
8f29e650 | 574 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
26a940e2 | 575 | |
8f29e650 JC |
576 | out: |
577 | return ret; | |
26a940e2 PP |
578 | } |
579 | ||
7a192ec3 | 580 | static int au_ide_remove(struct platform_device *dev) |
26a940e2 | 581 | { |
26a940e2 | 582 | struct resource *res; |
7a192ec3 | 583 | struct ide_host *host = platform_get_drvdata(dev); |
8f29e650 | 584 | _auide_hwif *ahwif = &auide_hwif; |
26a940e2 | 585 | |
48c3c107 | 586 | ide_host_remove(host); |
26a940e2 PP |
587 | |
588 | iounmap((void *)ahwif->regbase); | |
589 | ||
7a192ec3 | 590 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
b4dcaea3 | 591 | release_mem_region(res->start, res->end - res->start + 1); |
26a940e2 PP |
592 | |
593 | return 0; | |
594 | } | |
595 | ||
7a192ec3 ML |
596 | static struct platform_driver au1200_ide_driver = { |
597 | .driver = { | |
598 | .name = "au1200-ide", | |
599 | .owner = THIS_MODULE, | |
600 | }, | |
26a940e2 PP |
601 | .probe = au_ide_probe, |
602 | .remove = au_ide_remove, | |
603 | }; | |
604 | ||
605 | static int __init au_ide_init(void) | |
606 | { | |
7a192ec3 | 607 | return platform_driver_register(&au1200_ide_driver); |
26a940e2 PP |
608 | } |
609 | ||
8f29e650 | 610 | static void __exit au_ide_exit(void) |
26a940e2 | 611 | { |
7a192ec3 | 612 | platform_driver_unregister(&au1200_ide_driver); |
26a940e2 PP |
613 | } |
614 | ||
26a940e2 PP |
615 | MODULE_LICENSE("GPL"); |
616 | MODULE_DESCRIPTION("AU1200 IDE driver"); | |
617 | ||
618 | module_init(au_ide_init); | |
619 | module_exit(au_ide_exit); |