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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 | |
09a77441 SS |
51 | static int auide_ddma_init(_auide_hwif *auide); |
52 | ||
26a940e2 PP |
53 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
54 | ||
8f29e650 | 55 | void auide_insw(unsigned long port, void *addr, u32 count) |
26a940e2 | 56 | { |
8f29e650 JC |
57 | _auide_hwif *ahwif = &auide_hwif; |
58 | chan_tab_t *ctp; | |
59 | au1x_ddma_desc_t *dp; | |
26a940e2 | 60 | |
8f29e650 JC |
61 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
62 | DDMA_FLAGS_NOIE)) { | |
eb63963a | 63 | printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); |
8f29e650 JC |
64 | return; |
65 | } | |
66 | ctp = *((chan_tab_t **)ahwif->rx_chan); | |
67 | dp = ctp->cur_ptr; | |
68 | while (dp->dscr_cmd0 & DSCR_CMD0_V) | |
69 | ; | |
70 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); | |
26a940e2 PP |
71 | } |
72 | ||
8f29e650 | 73 | void auide_outsw(unsigned long port, void *addr, u32 count) |
26a940e2 | 74 | { |
8f29e650 JC |
75 | _auide_hwif *ahwif = &auide_hwif; |
76 | chan_tab_t *ctp; | |
77 | au1x_ddma_desc_t *dp; | |
26a940e2 | 78 | |
8f29e650 JC |
79 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
80 | count << 1, DDMA_FLAGS_NOIE)) { | |
eb63963a | 81 | printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); |
8f29e650 JC |
82 | return; |
83 | } | |
84 | ctp = *((chan_tab_t **)ahwif->tx_chan); | |
85 | dp = ctp->cur_ptr; | |
86 | while (dp->dscr_cmd0 & DSCR_CMD0_V) | |
87 | ; | |
88 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); | |
26a940e2 PP |
89 | } |
90 | ||
26a940e2 | 91 | #endif |
26a940e2 | 92 | |
26bcb879 | 93 | static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio) |
26a940e2 | 94 | { |
88b2b32b | 95 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
8f29e650 JC |
96 | |
97 | /* set pio mode! */ | |
98 | switch(pio) { | |
99 | case 0: | |
100 | mem_sttime = SBC_IDE_TIMING(PIO0); | |
101 | ||
102 | /* set configuration for RCS2# */ | |
103 | mem_stcfg |= TS_MASK; | |
104 | mem_stcfg &= ~TCSOE_MASK; | |
105 | mem_stcfg &= ~TOECS_MASK; | |
106 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; | |
107 | break; | |
108 | ||
109 | case 1: | |
110 | mem_sttime = SBC_IDE_TIMING(PIO1); | |
111 | ||
112 | /* set configuration for RCS2# */ | |
113 | mem_stcfg |= TS_MASK; | |
114 | mem_stcfg &= ~TCSOE_MASK; | |
115 | mem_stcfg &= ~TOECS_MASK; | |
116 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; | |
117 | break; | |
118 | ||
119 | case 2: | |
120 | mem_sttime = SBC_IDE_TIMING(PIO2); | |
121 | ||
122 | /* set configuration for RCS2# */ | |
123 | mem_stcfg &= ~TS_MASK; | |
124 | mem_stcfg &= ~TCSOE_MASK; | |
125 | mem_stcfg &= ~TOECS_MASK; | |
126 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; | |
127 | break; | |
128 | ||
129 | case 3: | |
130 | mem_sttime = SBC_IDE_TIMING(PIO3); | |
131 | ||
132 | /* set configuration for RCS2# */ | |
133 | mem_stcfg &= ~TS_MASK; | |
134 | mem_stcfg &= ~TCSOE_MASK; | |
135 | mem_stcfg &= ~TOECS_MASK; | |
136 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; | |
137 | ||
138 | break; | |
139 | ||
140 | case 4: | |
141 | mem_sttime = SBC_IDE_TIMING(PIO4); | |
142 | ||
143 | /* set configuration for RCS2# */ | |
144 | mem_stcfg &= ~TS_MASK; | |
145 | mem_stcfg &= ~TCSOE_MASK; | |
146 | mem_stcfg &= ~TOECS_MASK; | |
147 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; | |
148 | break; | |
149 | } | |
150 | ||
151 | au_writel(mem_sttime,MEM_STTIME2); | |
152 | au_writel(mem_stcfg,MEM_STCFG2); | |
26a940e2 PP |
153 | } |
154 | ||
88b2b32b | 155 | static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed) |
26a940e2 | 156 | { |
88b2b32b | 157 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
26a940e2 | 158 | |
8f29e650 | 159 | switch(speed) { |
26a940e2 | 160 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
8f29e650 JC |
161 | case XFER_MW_DMA_2: |
162 | mem_sttime = SBC_IDE_TIMING(MDMA2); | |
163 | ||
164 | /* set configuration for RCS2# */ | |
165 | mem_stcfg &= ~TS_MASK; | |
166 | mem_stcfg &= ~TCSOE_MASK; | |
167 | mem_stcfg &= ~TOECS_MASK; | |
168 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; | |
169 | ||
8f29e650 JC |
170 | break; |
171 | case XFER_MW_DMA_1: | |
172 | mem_sttime = SBC_IDE_TIMING(MDMA1); | |
173 | ||
174 | /* set configuration for RCS2# */ | |
175 | mem_stcfg &= ~TS_MASK; | |
176 | mem_stcfg &= ~TCSOE_MASK; | |
177 | mem_stcfg &= ~TOECS_MASK; | |
178 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; | |
179 | ||
8f29e650 JC |
180 | break; |
181 | case XFER_MW_DMA_0: | |
182 | mem_sttime = SBC_IDE_TIMING(MDMA0); | |
183 | ||
184 | /* set configuration for RCS2# */ | |
185 | mem_stcfg |= TS_MASK; | |
186 | mem_stcfg &= ~TCSOE_MASK; | |
187 | mem_stcfg &= ~TOECS_MASK; | |
188 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; | |
189 | ||
8f29e650 | 190 | break; |
26a940e2 | 191 | #endif |
8f29e650 | 192 | } |
a523a175 | 193 | |
8f29e650 JC |
194 | au_writel(mem_sttime,MEM_STTIME2); |
195 | au_writel(mem_stcfg,MEM_STCFG2); | |
26a940e2 PP |
196 | } |
197 | ||
198 | /* | |
199 | * Multi-Word DMA + DbDMA functions | |
200 | */ | |
26a940e2 | 201 | |
8f29e650 | 202 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
26a940e2 PP |
203 | static int auide_build_dmatable(ide_drive_t *drive) |
204 | { | |
8f29e650 JC |
205 | int i, iswrite, count = 0; |
206 | ide_hwif_t *hwif = HWIF(drive); | |
207 | ||
208 | struct request *rq = HWGROUP(drive)->rq; | |
209 | ||
210 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; | |
211 | struct scatterlist *sg; | |
212 | ||
213 | iswrite = (rq_data_dir(rq) == WRITE); | |
214 | /* Save for interrupt context */ | |
215 | ahwif->drive = drive; | |
216 | ||
062f9f02 | 217 | hwif->sg_nents = i = ide_build_sglist(drive, rq); |
8f29e650 JC |
218 | |
219 | if (!i) | |
220 | return 0; | |
221 | ||
222 | /* fill the descriptors */ | |
223 | sg = hwif->sg_table; | |
224 | while (i && sg_dma_len(sg)) { | |
225 | u32 cur_addr; | |
226 | u32 cur_len; | |
227 | ||
228 | cur_addr = sg_dma_address(sg); | |
229 | cur_len = sg_dma_len(sg); | |
230 | ||
231 | while (cur_len) { | |
232 | u32 flags = DDMA_FLAGS_NOIE; | |
233 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; | |
234 | ||
235 | if (++count >= PRD_ENTRIES) { | |
236 | printk(KERN_WARNING "%s: DMA table too small\n", | |
237 | drive->name); | |
238 | goto use_pio_instead; | |
239 | } | |
240 | ||
241 | /* Lets enable intr for the last descriptor only */ | |
242 | if (1==i) | |
243 | flags = DDMA_FLAGS_IE; | |
244 | else | |
245 | flags = DDMA_FLAGS_NOIE; | |
246 | ||
247 | if (iswrite) { | |
248 | if(!put_source_flags(ahwif->tx_chan, | |
45711f1a | 249 | (void*) sg_virt(sg), |
8f29e650 JC |
250 | tc, flags)) { |
251 | printk(KERN_ERR "%s failed %d\n", | |
eb63963a | 252 | __func__, __LINE__); |
26a940e2 | 253 | } |
8f29e650 | 254 | } else |
26a940e2 | 255 | { |
8f29e650 | 256 | if(!put_dest_flags(ahwif->rx_chan, |
45711f1a | 257 | (void*) sg_virt(sg), |
8f29e650 JC |
258 | tc, flags)) { |
259 | printk(KERN_ERR "%s failed %d\n", | |
eb63963a | 260 | __func__, __LINE__); |
26a940e2 | 261 | } |
8f29e650 | 262 | } |
26a940e2 | 263 | |
8f29e650 JC |
264 | cur_addr += tc; |
265 | cur_len -= tc; | |
266 | } | |
55c16a70 | 267 | sg = sg_next(sg); |
8f29e650 JC |
268 | i--; |
269 | } | |
26a940e2 | 270 | |
8f29e650 JC |
271 | if (count) |
272 | return 1; | |
26a940e2 | 273 | |
8f29e650 | 274 | use_pio_instead: |
062f9f02 | 275 | ide_destroy_dmatable(drive); |
26a940e2 | 276 | |
8f29e650 | 277 | return 0; /* revert to PIO for this request */ |
26a940e2 PP |
278 | } |
279 | ||
280 | static int auide_dma_end(ide_drive_t *drive) | |
281 | { | |
8f29e650 | 282 | ide_hwif_t *hwif = HWIF(drive); |
26a940e2 | 283 | |
8f29e650 | 284 | if (hwif->sg_nents) { |
062f9f02 | 285 | ide_destroy_dmatable(drive); |
8f29e650 JC |
286 | hwif->sg_nents = 0; |
287 | } | |
26a940e2 | 288 | |
8f29e650 | 289 | return 0; |
26a940e2 PP |
290 | } |
291 | ||
292 | static void auide_dma_start(ide_drive_t *drive ) | |
293 | { | |
26a940e2 PP |
294 | } |
295 | ||
26a940e2 PP |
296 | |
297 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) | |
298 | { | |
8f29e650 JC |
299 | /* issue cmd to drive */ |
300 | ide_execute_command(drive, command, &ide_dma_intr, | |
301 | (2*WAIT_CMD), NULL); | |
26a940e2 PP |
302 | } |
303 | ||
304 | static int auide_dma_setup(ide_drive_t *drive) | |
8f29e650 JC |
305 | { |
306 | struct request *rq = HWGROUP(drive)->rq; | |
26a940e2 | 307 | |
8f29e650 JC |
308 | if (!auide_build_dmatable(drive)) { |
309 | ide_map_sg(drive, rq); | |
310 | return 1; | |
311 | } | |
26a940e2 | 312 | |
8f29e650 JC |
313 | drive->waiting_for_dma = 1; |
314 | return 0; | |
26a940e2 PP |
315 | } |
316 | ||
26a940e2 | 317 | static int auide_dma_test_irq(ide_drive_t *drive) |
8f29e650 JC |
318 | { |
319 | if (drive->waiting_for_dma == 0) | |
320 | printk(KERN_WARNING "%s: ide_dma_test_irq \ | |
26a940e2 PP |
321 | called while not waiting\n", drive->name); |
322 | ||
8f29e650 JC |
323 | /* If dbdma didn't execute the STOP command yet, the |
324 | * active bit is still set | |
26a940e2 | 325 | */ |
8f29e650 JC |
326 | drive->waiting_for_dma++; |
327 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { | |
328 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ | |
26a940e2 | 329 | complete\n", drive->name); |
8f29e650 JC |
330 | return 1; |
331 | } | |
332 | udelay(10); | |
333 | return 0; | |
26a940e2 PP |
334 | } |
335 | ||
15ce926a | 336 | static void auide_dma_host_set(ide_drive_t *drive, int on) |
26a940e2 | 337 | { |
26a940e2 PP |
338 | } |
339 | ||
841d2a9b | 340 | static void auide_dma_lost_irq(ide_drive_t *drive) |
26a940e2 | 341 | { |
8f29e650 | 342 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
26a940e2 PP |
343 | } |
344 | ||
53e62d3a | 345 | static void auide_ddma_tx_callback(int irq, void *param) |
26a940e2 | 346 | { |
8f29e650 JC |
347 | _auide_hwif *ahwif = (_auide_hwif*)param; |
348 | ahwif->drive->waiting_for_dma = 0; | |
26a940e2 PP |
349 | } |
350 | ||
53e62d3a | 351 | static void auide_ddma_rx_callback(int irq, void *param) |
26a940e2 | 352 | { |
8f29e650 JC |
353 | _auide_hwif *ahwif = (_auide_hwif*)param; |
354 | ahwif->drive->waiting_for_dma = 0; | |
355 | } | |
356 | ||
357 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ | |
26a940e2 | 358 | |
8f29e650 JC |
359 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
360 | { | |
361 | dev->dev_id = dev_id; | |
362 | dev->dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; | |
363 | dev->dev_intlevel = 0; | |
364 | dev->dev_intpolarity = 0; | |
365 | dev->dev_tsize = tsize; | |
366 | dev->dev_devwidth = devwidth; | |
367 | dev->dev_flags = flags; | |
26a940e2 | 368 | } |
8f29e650 JC |
369 | |
370 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) | |
26a940e2 | 371 | |
c283f5db | 372 | static void auide_dma_timeout(ide_drive_t *drive) |
26a940e2 | 373 | { |
c283f5db | 374 | ide_hwif_t *hwif = HWIF(drive); |
26a940e2 | 375 | |
8f29e650 | 376 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
26a940e2 | 377 | |
c283f5db SS |
378 | if (hwif->ide_dma_test_irq(drive)) |
379 | return; | |
26a940e2 | 380 | |
c283f5db | 381 | hwif->ide_dma_end(drive); |
26a940e2 | 382 | } |
8f29e650 | 383 | |
26a940e2 | 384 | |
8f29e650 JC |
385 | static int auide_ddma_init(_auide_hwif *auide) { |
386 | ||
387 | dbdev_tab_t source_dev_tab, target_dev_tab; | |
388 | u32 dev_id, tsize, devwidth, flags; | |
389 | ide_hwif_t *hwif = auide->hwif; | |
26a940e2 | 390 | |
8f29e650 | 391 | dev_id = AU1XXX_ATA_DDMA_REQ; |
26a940e2 | 392 | |
f629b38b BZ |
393 | tsize = 8; /* 1 */ |
394 | devwidth = 32; /* 16 */ | |
26a940e2 | 395 | |
8f29e650 JC |
396 | #ifdef IDE_AU1XXX_BURSTMODE |
397 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; | |
26a940e2 | 398 | #else |
8f29e650 | 399 | flags = DEV_FLAGS_SYNC; |
26a940e2 PP |
400 | #endif |
401 | ||
8f29e650 JC |
402 | /* setup dev_tab for tx channel */ |
403 | auide_init_dbdma_dev( &source_dev_tab, | |
404 | dev_id, | |
405 | tsize, devwidth, DEV_FLAGS_OUT | flags); | |
406 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
407 | ||
408 | auide_init_dbdma_dev( &source_dev_tab, | |
409 | dev_id, | |
410 | tsize, devwidth, DEV_FLAGS_IN | flags); | |
411 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
412 | ||
413 | /* We also need to add a target device for the DMA */ | |
414 | auide_init_dbdma_dev( &target_dev_tab, | |
415 | (u32)DSCR_CMD0_ALWAYS, | |
416 | tsize, devwidth, DEV_FLAGS_ANYUSE); | |
417 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); | |
418 | ||
419 | /* Get a channel for TX */ | |
420 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, | |
421 | auide->tx_dev_id, | |
422 | auide_ddma_tx_callback, | |
423 | (void*)auide); | |
424 | ||
425 | /* Get a channel for RX */ | |
426 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, | |
427 | auide->target_dev_id, | |
428 | auide_ddma_rx_callback, | |
429 | (void*)auide); | |
430 | ||
431 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, | |
432 | NUM_DESCRIPTORS); | |
433 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, | |
434 | NUM_DESCRIPTORS); | |
435 | ||
5df37c34 | 436 | hwif->dmatable_cpu = dma_alloc_coherent(hwif->dev, |
8f29e650 JC |
437 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
438 | &hwif->dmatable_dma, GFP_KERNEL); | |
439 | ||
440 | au1xxx_dbdma_start( auide->tx_chan ); | |
441 | au1xxx_dbdma_start( auide->rx_chan ); | |
442 | ||
443 | return 0; | |
444 | } | |
26a940e2 | 445 | #else |
8f29e650 JC |
446 | |
447 | static int auide_ddma_init( _auide_hwif *auide ) | |
448 | { | |
449 | dbdev_tab_t source_dev_tab; | |
450 | int flags; | |
26a940e2 | 451 | |
8f29e650 JC |
452 | #ifdef IDE_AU1XXX_BURSTMODE |
453 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; | |
454 | #else | |
455 | flags = DEV_FLAGS_SYNC; | |
26a940e2 | 456 | #endif |
26a940e2 | 457 | |
8f29e650 JC |
458 | /* setup dev_tab for tx channel */ |
459 | auide_init_dbdma_dev( &source_dev_tab, | |
460 | (u32)DSCR_CMD0_ALWAYS, | |
461 | 8, 32, DEV_FLAGS_OUT | flags); | |
462 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
463 | ||
464 | auide_init_dbdma_dev( &source_dev_tab, | |
465 | (u32)DSCR_CMD0_ALWAYS, | |
466 | 8, 32, DEV_FLAGS_IN | flags); | |
467 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); | |
468 | ||
469 | /* Get a channel for TX */ | |
470 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, | |
471 | auide->tx_dev_id, | |
472 | NULL, | |
473 | (void*)auide); | |
474 | ||
475 | /* Get a channel for RX */ | |
476 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, | |
477 | DSCR_CMD0_ALWAYS, | |
478 | NULL, | |
479 | (void*)auide); | |
480 | ||
481 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, | |
482 | NUM_DESCRIPTORS); | |
483 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, | |
484 | NUM_DESCRIPTORS); | |
485 | ||
486 | au1xxx_dbdma_start( auide->tx_chan ); | |
487 | au1xxx_dbdma_start( auide->rx_chan ); | |
488 | ||
489 | return 0; | |
26a940e2 | 490 | } |
8f29e650 | 491 | #endif |
26a940e2 PP |
492 | |
493 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) | |
494 | { | |
8f29e650 JC |
495 | int i; |
496 | unsigned long *ata_regs = hw->io_ports; | |
497 | ||
498 | /* FIXME? */ | |
499 | for (i = 0; i < IDE_CONTROL_OFFSET; i++) { | |
500 | *ata_regs++ = ahwif->regbase + (i << AU1XXX_ATA_REG_OFFSET); | |
501 | } | |
502 | ||
503 | /* set the Alternative Status register */ | |
504 | *ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET); | |
26a940e2 PP |
505 | } |
506 | ||
ac95beed BZ |
507 | static const struct ide_port_ops au1xxx_port_ops = { |
508 | .set_pio_mode = au1xxx_set_pio_mode, | |
509 | .set_dma_mode = auide_set_dma_mode, | |
ac95beed BZ |
510 | }; |
511 | ||
c413b9b9 | 512 | static const struct ide_port_info au1xxx_port_info = { |
ac95beed | 513 | .port_ops = &au1xxx_port_ops, |
c413b9b9 BZ |
514 | .host_flags = IDE_HFLAG_POST_SET_MODE | |
515 | IDE_HFLAG_NO_DMA | /* no SFF-style DMA */ | |
807b90d0 | 516 | IDE_HFLAG_NO_IO_32BIT | |
c413b9b9 BZ |
517 | IDE_HFLAG_UNMASK_IRQS, |
518 | .pio_mask = ATA_PIO4, | |
519 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA | |
520 | .mwdma_mask = ATA_MWDMA2, | |
521 | #endif | |
522 | }; | |
523 | ||
26a940e2 PP |
524 | static int au_ide_probe(struct device *dev) |
525 | { | |
526 | struct platform_device *pdev = to_platform_device(dev); | |
8f29e650 JC |
527 | _auide_hwif *ahwif = &auide_hwif; |
528 | ide_hwif_t *hwif; | |
26a940e2 PP |
529 | struct resource *res; |
530 | int ret = 0; | |
8447d9d5 | 531 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
9239b333 | 532 | hw_regs_t hw; |
26a940e2 PP |
533 | |
534 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) | |
8f29e650 | 535 | char *mode = "MWDMA2"; |
26a940e2 | 536 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
8f29e650 | 537 | char *mode = "PIO+DDMA(offload)"; |
26a940e2 PP |
538 | #endif |
539 | ||
8f29e650 | 540 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
26a940e2 PP |
541 | ahwif->irq = platform_get_irq(pdev, 0); |
542 | ||
543 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
544 | ||
545 | if (res == NULL) { | |
546 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); | |
547 | ret = -ENODEV; | |
48944738 DV |
548 | goto out; |
549 | } | |
550 | if (ahwif->irq < 0) { | |
551 | pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); | |
552 | ret = -ENODEV; | |
26a940e2 PP |
553 | goto out; |
554 | } | |
555 | ||
b4dcaea3 SS |
556 | if (!request_mem_region(res->start, res->end - res->start + 1, |
557 | pdev->name)) { | |
26a940e2 | 558 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
8f29e650 | 559 | ret = -EBUSY; |
26a940e2 | 560 | goto out; |
8f29e650 | 561 | } |
26a940e2 | 562 | |
b4dcaea3 | 563 | ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1); |
26a940e2 PP |
564 | if (ahwif->regbase == 0) { |
565 | ret = -ENOMEM; | |
566 | goto out; | |
567 | } | |
568 | ||
4f7bada2 BZ |
569 | hwif = ide_find_port(); |
570 | if (hwif == NULL) { | |
571 | ret = -ENOENT; | |
572 | goto out; | |
573 | } | |
26a940e2 | 574 | |
9239b333 BZ |
575 | memset(&hw, 0, sizeof(hw)); |
576 | auide_setup_ports(&hw, ahwif); | |
aa79a2fa | 577 | hw.irq = ahwif->irq; |
ed1f7889 | 578 | hw.dev = dev; |
aa79a2fa BZ |
579 | hw.chipset = ide_au1xxx; |
580 | ||
581 | ide_init_port_hw(hwif, &hw); | |
26a940e2 | 582 | |
5df37c34 BZ |
583 | hwif->dev = dev; |
584 | ||
8f29e650 JC |
585 | /* If the user has selected DDMA assisted copies, |
586 | then set up a few local I/O function entry points | |
587 | */ | |
588 | ||
589 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA | |
590 | hwif->INSW = auide_insw; | |
591 | hwif->OUTSW = auide_outsw; | |
26a940e2 | 592 | #endif |
26a940e2 | 593 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
c283f5db | 594 | hwif->dma_timeout = &auide_dma_timeout; |
15ce926a | 595 | hwif->dma_host_set = &auide_dma_host_set; |
8f29e650 JC |
596 | hwif->dma_exec_cmd = &auide_dma_exec_cmd; |
597 | hwif->dma_start = &auide_dma_start; | |
598 | hwif->ide_dma_end = &auide_dma_end; | |
599 | hwif->dma_setup = &auide_dma_setup; | |
600 | hwif->ide_dma_test_irq = &auide_dma_test_irq; | |
841d2a9b | 601 | hwif->dma_lost_irq = &auide_dma_lost_irq; |
a42bcc0f | 602 | #endif |
8f29e650 JC |
603 | hwif->select_data = 0; /* no chipset-specific code */ |
604 | hwif->config_data = 0; /* no chipset-specific code */ | |
605 | ||
8f29e650 JC |
606 | auide_hwif.hwif = hwif; |
607 | hwif->hwif_data = &auide_hwif; | |
26a940e2 | 608 | |
8f29e650 | 609 | auide_ddma_init(&auide_hwif); |
26a940e2 | 610 | |
8447d9d5 | 611 | idx[0] = hwif->index; |
5cbf79cd | 612 | |
c413b9b9 | 613 | ide_device_add(idx, &au1xxx_port_info); |
5cbf79cd | 614 | |
26a940e2 PP |
615 | dev_set_drvdata(dev, hwif); |
616 | ||
8f29e650 | 617 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
26a940e2 | 618 | |
8f29e650 JC |
619 | out: |
620 | return ret; | |
26a940e2 PP |
621 | } |
622 | ||
623 | static int au_ide_remove(struct device *dev) | |
624 | { | |
625 | struct platform_device *pdev = to_platform_device(dev); | |
626 | struct resource *res; | |
627 | ide_hwif_t *hwif = dev_get_drvdata(dev); | |
8f29e650 | 628 | _auide_hwif *ahwif = &auide_hwif; |
26a940e2 | 629 | |
93de00fd | 630 | ide_unregister(hwif->index); |
26a940e2 PP |
631 | |
632 | iounmap((void *)ahwif->regbase); | |
633 | ||
634 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
b4dcaea3 | 635 | release_mem_region(res->start, res->end - res->start + 1); |
26a940e2 PP |
636 | |
637 | return 0; | |
638 | } | |
639 | ||
640 | static struct device_driver au1200_ide_driver = { | |
641 | .name = "au1200-ide", | |
642 | .bus = &platform_bus_type, | |
643 | .probe = au_ide_probe, | |
644 | .remove = au_ide_remove, | |
645 | }; | |
646 | ||
647 | static int __init au_ide_init(void) | |
648 | { | |
649 | return driver_register(&au1200_ide_driver); | |
650 | } | |
651 | ||
8f29e650 | 652 | static void __exit au_ide_exit(void) |
26a940e2 PP |
653 | { |
654 | driver_unregister(&au1200_ide_driver); | |
655 | } | |
656 | ||
26a940e2 PP |
657 | MODULE_LICENSE("GPL"); |
658 | MODULE_DESCRIPTION("AU1200 IDE driver"); | |
659 | ||
660 | module_init(au_ide_init); | |
661 | module_exit(au_ide_exit); |