blob: 11b7f61aae40f7a7d7ec8d29be48cd6c5ec78313 [file] [log] [blame]
Pete Popov26a940e2005-09-15 08:03:12 +00001/*
Pete Popov26a940e2005-09-15 08:03:12 +00002 * 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 */
Pete Popov26a940e2005-09-15 08:03:12 +000030#include <linux/types.h>
31#include <linux/module.h>
32#include <linux/kernel.h>
33#include <linux/delay.h>
Jordan Crouse8f29e652005-12-15 02:17:46 +010034#include <linux/platform_device.h>
Pete Popov26a940e2005-09-15 08:03:12 +000035#include <linux/init.h>
36#include <linux/ide.h>
Sergei Shtylyovfabd3a22008-04-17 01:14:33 +020037#include <linux/scatterlist.h>
Pete Popov26a940e2005-09-15 08:03:12 +000038
Pete Popov26a940e2005-09-15 08:03:12 +000039#include <asm/mach-au1x00/au1xxx.h>
40#include <asm/mach-au1x00/au1xxx_dbdma.h>
Pete Popov26a940e2005-09-15 08:03:12 +000041#include <asm/mach-au1x00/au1xxx_ide.h>
42
43#define DRV_NAME "au1200-ide"
Jordan Crouse8f29e652005-12-15 02:17:46 +010044#define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>"
45
46/* enable the burstmode in the dbdma */
47#define IDE_AU1XXX_BURSTMODE 1
Pete Popov26a940e2005-09-15 08:03:12 +000048
49static _auide_hwif auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +000050
Jordan Crouse8f29e652005-12-15 02:17:46 +010051#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
Pete Popov26a940e2005-09-15 08:03:12 +000052
53void auide_insw(unsigned long port, void *addr, u32 count)
54{
Jordan Crouse8f29e652005-12-15 02:17:46 +010055 _auide_hwif *ahwif = &auide_hwif;
56 chan_tab_t *ctp;
57 au1x_ddma_desc_t *dp;
Pete Popov26a940e2005-09-15 08:03:12 +000058
Jordan Crouse8f29e652005-12-15 02:17:46 +010059 if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1,
60 DDMA_FLAGS_NOIE)) {
Harvey Harrisoneb639632008-04-26 22:25:20 +020061 printk(KERN_ERR "%s failed %d\n", __func__, __LINE__);
Jordan Crouse8f29e652005-12-15 02:17:46 +010062 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);
Pete Popov26a940e2005-09-15 08:03:12 +000069}
70
71void auide_outsw(unsigned long port, void *addr, u32 count)
72{
Jordan Crouse8f29e652005-12-15 02:17:46 +010073 _auide_hwif *ahwif = &auide_hwif;
74 chan_tab_t *ctp;
75 au1x_ddma_desc_t *dp;
Pete Popov26a940e2005-09-15 08:03:12 +000076
Jordan Crouse8f29e652005-12-15 02:17:46 +010077 if(!put_source_flags(ahwif->tx_chan, (void*)addr,
78 count << 1, DDMA_FLAGS_NOIE)) {
Harvey Harrisoneb639632008-04-26 22:25:20 +020079 printk(KERN_ERR "%s failed %d\n", __func__, __LINE__);
Jordan Crouse8f29e652005-12-15 02:17:46 +010080 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);
87}
88
Bartlomiej Zolnierkiewicz70f91e02008-04-28 23:44:37 +020089static void au1xxx_input_data(ide_drive_t *drive, struct request *rq,
90 void *buf, unsigned int len)
91{
92 auide_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
93}
94
95static void au1xxx_output_data(ide_drive_t *drive, struct request *rq,
96 void *buf, unsigned int len)
97{
98 auide_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
99}
Pete Popov26a940e2005-09-15 08:03:12 +0000100#endif
Pete Popov26a940e2005-09-15 08:03:12 +0000101
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200102static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio)
Pete Popov26a940e2005-09-15 08:03:12 +0000103{
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200104 int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000105
Jordan Crouse8f29e652005-12-15 02:17:46 +0100106 /* set pio mode! */
107 switch(pio) {
108 case 0:
109 mem_sttime = SBC_IDE_TIMING(PIO0);
Pete Popov26a940e2005-09-15 08:03:12 +0000110
Jordan Crouse8f29e652005-12-15 02:17:46 +0100111 /* 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;
Pete Popov26a940e2005-09-15 08:03:12 +0000117
Jordan Crouse8f29e652005-12-15 02:17:46 +0100118 case 1:
119 mem_sttime = SBC_IDE_TIMING(PIO1);
Pete Popov26a940e2005-09-15 08:03:12 +0000120
Jordan Crouse8f29e652005-12-15 02:17:46 +0100121 /* 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;
Pete Popov26a940e2005-09-15 08:03:12 +0000127
Jordan Crouse8f29e652005-12-15 02:17:46 +0100128 case 2:
129 mem_sttime = SBC_IDE_TIMING(PIO2);
Pete Popov26a940e2005-09-15 08:03:12 +0000130
Jordan Crouse8f29e652005-12-15 02:17:46 +0100131 /* 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;
Pete Popov26a940e2005-09-15 08:03:12 +0000137
Jordan Crouse8f29e652005-12-15 02:17:46 +0100138 case 3:
139 mem_sttime = SBC_IDE_TIMING(PIO3);
Pete Popov26a940e2005-09-15 08:03:12 +0000140
Jordan Crouse8f29e652005-12-15 02:17:46 +0100141 /* 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;
Pete Popov26a940e2005-09-15 08:03:12 +0000146
Jordan Crouse8f29e652005-12-15 02:17:46 +0100147 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000148
Jordan Crouse8f29e652005-12-15 02:17:46 +0100149 case 4:
150 mem_sttime = SBC_IDE_TIMING(PIO4);
Pete Popov26a940e2005-09-15 08:03:12 +0000151
Jordan Crouse8f29e652005-12-15 02:17:46 +0100152 /* 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);
Pete Popov26a940e2005-09-15 08:03:12 +0000162}
163
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200164static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed)
Pete Popov26a940e2005-09-15 08:03:12 +0000165{
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200166 int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000167
Jordan Crouse8f29e652005-12-15 02:17:46 +0100168 switch(speed) {
Pete Popov26a940e2005-09-15 08:03:12 +0000169#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Jordan Crouse8f29e652005-12-15 02:17:46 +0100170 case XFER_MW_DMA_2:
171 mem_sttime = SBC_IDE_TIMING(MDMA2);
Pete Popov26a940e2005-09-15 08:03:12 +0000172
Jordan Crouse8f29e652005-12-15 02:17:46 +0100173 /* 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;
Pete Popov26a940e2005-09-15 08:03:12 +0000178
Jordan Crouse8f29e652005-12-15 02:17:46 +0100179 break;
180 case XFER_MW_DMA_1:
181 mem_sttime = SBC_IDE_TIMING(MDMA1);
Pete Popov26a940e2005-09-15 08:03:12 +0000182
Jordan Crouse8f29e652005-12-15 02:17:46 +0100183 /* 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
Jordan Crouse8f29e652005-12-15 02:17:46 +0100189 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
Jordan Crouse8f29e652005-12-15 02:17:46 +0100199 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000200#endif
Jordan Crouse8f29e652005-12-15 02:17:46 +0100201 }
Bartlomiej Zolnierkiewicza523a172007-02-17 02:40:23 +0100202
Jordan Crouse8f29e652005-12-15 02:17:46 +0100203 au_writel(mem_sttime,MEM_STTIME2);
204 au_writel(mem_stcfg,MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000205}
206
207/*
208 * Multi-Word DMA + DbDMA functions
209 */
Pete Popov26a940e2005-09-15 08:03:12 +0000210
Jordan Crouse8f29e652005-12-15 02:17:46 +0100211#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Pete Popov26a940e2005-09-15 08:03:12 +0000212static int auide_build_dmatable(ide_drive_t *drive)
213{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100214 int i, iswrite, count = 0;
215 ide_hwif_t *hwif = HWIF(drive);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100216 struct request *rq = HWGROUP(drive)->rq;
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200217 _auide_hwif *ahwif = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100218 struct scatterlist *sg;
Pete Popov26a940e2005-09-15 08:03:12 +0000219
Jordan Crouse8f29e652005-12-15 02:17:46 +0100220 iswrite = (rq_data_dir(rq) == WRITE);
221 /* Save for interrupt context */
222 ahwif->drive = drive;
Pete Popov26a940e2005-09-15 08:03:12 +0000223
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +0100224 hwif->sg_nents = i = ide_build_sglist(drive, rq);
Pete Popov26a940e2005-09-15 08:03:12 +0000225
Jordan Crouse8f29e652005-12-15 02:17:46 +0100226 if (!i)
227 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000228
Jordan Crouse8f29e652005-12-15 02:17:46 +0100229 /* fill the descriptors */
230 sg = hwif->sg_table;
231 while (i && sg_dma_len(sg)) {
232 u32 cur_addr;
233 u32 cur_len;
Pete Popov26a940e2005-09-15 08:03:12 +0000234
Jordan Crouse8f29e652005-12-15 02:17:46 +0100235 cur_addr = sg_dma_address(sg);
236 cur_len = sg_dma_len(sg);
Pete Popov26a940e2005-09-15 08:03:12 +0000237
Jordan Crouse8f29e652005-12-15 02:17:46 +0100238 while (cur_len) {
239 u32 flags = DDMA_FLAGS_NOIE;
240 unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
Pete Popov26a940e2005-09-15 08:03:12 +0000241
Jordan Crouse8f29e652005-12-15 02:17:46 +0100242 if (++count >= PRD_ENTRIES) {
243 printk(KERN_WARNING "%s: DMA table too small\n",
244 drive->name);
245 goto use_pio_instead;
246 }
Pete Popov26a940e2005-09-15 08:03:12 +0000247
Jordan Crouse8f29e652005-12-15 02:17:46 +0100248 /* Lets enable intr for the last descriptor only */
249 if (1==i)
250 flags = DDMA_FLAGS_IE;
251 else
252 flags = DDMA_FLAGS_NOIE;
Pete Popov26a940e2005-09-15 08:03:12 +0000253
Jordan Crouse8f29e652005-12-15 02:17:46 +0100254 if (iswrite) {
255 if(!put_source_flags(ahwif->tx_chan,
Jens Axboe45711f12007-10-22 21:19:53 +0200256 (void*) sg_virt(sg),
Jordan Crouse8f29e652005-12-15 02:17:46 +0100257 tc, flags)) {
258 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200259 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000260 }
Jordan Crouse8f29e652005-12-15 02:17:46 +0100261 } else
Pete Popov26a940e2005-09-15 08:03:12 +0000262 {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100263 if(!put_dest_flags(ahwif->rx_chan,
Jens Axboe45711f12007-10-22 21:19:53 +0200264 (void*) sg_virt(sg),
Jordan Crouse8f29e652005-12-15 02:17:46 +0100265 tc, flags)) {
266 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200267 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000268 }
Jordan Crouse8f29e652005-12-15 02:17:46 +0100269 }
Pete Popov26a940e2005-09-15 08:03:12 +0000270
Jordan Crouse8f29e652005-12-15 02:17:46 +0100271 cur_addr += tc;
272 cur_len -= tc;
273 }
Jens Axboe55c16a72007-07-25 08:13:56 +0200274 sg = sg_next(sg);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100275 i--;
276 }
Pete Popov26a940e2005-09-15 08:03:12 +0000277
Jordan Crouse8f29e652005-12-15 02:17:46 +0100278 if (count)
279 return 1;
Pete Popov26a940e2005-09-15 08:03:12 +0000280
Jordan Crouse8f29e652005-12-15 02:17:46 +0100281 use_pio_instead:
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +0100282 ide_destroy_dmatable(drive);
Pete Popov26a940e2005-09-15 08:03:12 +0000283
Jordan Crouse8f29e652005-12-15 02:17:46 +0100284 return 0; /* revert to PIO for this request */
Pete Popov26a940e2005-09-15 08:03:12 +0000285}
286
287static int auide_dma_end(ide_drive_t *drive)
288{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100289 ide_hwif_t *hwif = HWIF(drive);
Pete Popov26a940e2005-09-15 08:03:12 +0000290
Jordan Crouse8f29e652005-12-15 02:17:46 +0100291 if (hwif->sg_nents) {
Bartlomiej Zolnierkiewicz062f9f02008-02-01 23:09:32 +0100292 ide_destroy_dmatable(drive);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100293 hwif->sg_nents = 0;
294 }
Pete Popov26a940e2005-09-15 08:03:12 +0000295
Jordan Crouse8f29e652005-12-15 02:17:46 +0100296 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000297}
298
299static void auide_dma_start(ide_drive_t *drive )
300{
Pete Popov26a940e2005-09-15 08:03:12 +0000301}
302
Pete Popov26a940e2005-09-15 08:03:12 +0000303
304static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command)
305{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100306 /* issue cmd to drive */
307 ide_execute_command(drive, command, &ide_dma_intr,
308 (2*WAIT_CMD), NULL);
Pete Popov26a940e2005-09-15 08:03:12 +0000309}
310
311static int auide_dma_setup(ide_drive_t *drive)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100312{
313 struct request *rq = HWGROUP(drive)->rq;
Pete Popov26a940e2005-09-15 08:03:12 +0000314
Jordan Crouse8f29e652005-12-15 02:17:46 +0100315 if (!auide_build_dmatable(drive)) {
316 ide_map_sg(drive, rq);
317 return 1;
318 }
Pete Popov26a940e2005-09-15 08:03:12 +0000319
Jordan Crouse8f29e652005-12-15 02:17:46 +0100320 drive->waiting_for_dma = 1;
321 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000322}
323
Pete Popov26a940e2005-09-15 08:03:12 +0000324static int auide_dma_test_irq(ide_drive_t *drive)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100325{
326 if (drive->waiting_for_dma == 0)
327 printk(KERN_WARNING "%s: ide_dma_test_irq \
Pete Popov26a940e2005-09-15 08:03:12 +0000328 called while not waiting\n", drive->name);
329
Jordan Crouse8f29e652005-12-15 02:17:46 +0100330 /* If dbdma didn't execute the STOP command yet, the
331 * active bit is still set
Pete Popov26a940e2005-09-15 08:03:12 +0000332 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100333 drive->waiting_for_dma++;
334 if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) {
335 printk(KERN_WARNING "%s: timeout waiting for ddma to \
Pete Popov26a940e2005-09-15 08:03:12 +0000336 complete\n", drive->name);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100337 return 1;
338 }
339 udelay(10);
340 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000341}
342
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100343static void auide_dma_host_set(ide_drive_t *drive, int on)
Pete Popov26a940e2005-09-15 08:03:12 +0000344{
Pete Popov26a940e2005-09-15 08:03:12 +0000345}
346
Sergei Shtylyov841d2a92007-07-09 23:17:54 +0200347static void auide_dma_lost_irq(ide_drive_t *drive)
Pete Popov26a940e2005-09-15 08:03:12 +0000348{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100349 printk(KERN_ERR "%s: IRQ lost\n", drive->name);
Pete Popov26a940e2005-09-15 08:03:12 +0000350}
351
Ralf Baechle53e62d32006-09-25 23:32:10 -0700352static void auide_ddma_tx_callback(int irq, void *param)
Pete Popov26a940e2005-09-15 08:03:12 +0000353{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100354 _auide_hwif *ahwif = (_auide_hwif*)param;
355 ahwif->drive->waiting_for_dma = 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000356}
357
Ralf Baechle53e62d32006-09-25 23:32:10 -0700358static void auide_ddma_rx_callback(int irq, void *param)
Pete Popov26a940e2005-09-15 08:03:12 +0000359{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100360 _auide_hwif *ahwif = (_auide_hwif*)param;
361 ahwif->drive->waiting_for_dma = 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000362}
363
Jordan Crouse8f29e652005-12-15 02:17:46 +0100364#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
365
366static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags)
367{
368 dev->dev_id = dev_id;
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400369 dev->dev_physaddr = (u32)IDE_PHYS_ADDR;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100370 dev->dev_intlevel = 0;
371 dev->dev_intpolarity = 0;
372 dev->dev_tsize = tsize;
373 dev->dev_devwidth = devwidth;
374 dev->dev_flags = flags;
375}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100376
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200377#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200378static void auide_dma_timeout(ide_drive_t *drive)
Pete Popov26a940e2005-09-15 08:03:12 +0000379{
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200380 ide_hwif_t *hwif = HWIF(drive);
Pete Popov26a940e2005-09-15 08:03:12 +0000381
Jordan Crouse8f29e652005-12-15 02:17:46 +0100382 printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name);
Pete Popov26a940e2005-09-15 08:03:12 +0000383
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200384 if (auide_dma_test_irq(drive))
Sergei Shtylyovc283f5d2007-07-09 23:17:54 +0200385 return;
Pete Popov26a940e2005-09-15 08:03:12 +0000386
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200387 auide_dma_end(drive);
Pete Popov26a940e2005-09-15 08:03:12 +0000388}
Pete Popov26a940e2005-09-15 08:03:12 +0000389
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200390static const struct ide_dma_ops au1xxx_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200391 .dma_host_set = auide_dma_host_set,
392 .dma_setup = auide_dma_setup,
393 .dma_exec_cmd = auide_dma_exec_cmd,
394 .dma_start = auide_dma_start,
395 .dma_end = auide_dma_end,
396 .dma_test_irq = auide_dma_test_irq,
397 .dma_lost_irq = auide_dma_lost_irq,
398 .dma_timeout = auide_dma_timeout,
399};
400
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200401static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
402{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200403 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100404 dbdev_tab_t source_dev_tab, target_dev_tab;
405 u32 dev_id, tsize, devwidth, flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000406
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400407 dev_id = IDE_DDMA_REQ;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100408
Bartlomiej Zolnierkiewiczf629b382008-04-26 22:25:22 +0200409 tsize = 8; /* 1 */
410 devwidth = 32; /* 16 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100411
412#ifdef IDE_AU1XXX_BURSTMODE
413 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
414#else
415 flags = DEV_FLAGS_SYNC;
416#endif
417
418 /* setup dev_tab for tx channel */
419 auide_init_dbdma_dev( &source_dev_tab,
420 dev_id,
421 tsize, devwidth, DEV_FLAGS_OUT | flags);
422 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
423
424 auide_init_dbdma_dev( &source_dev_tab,
425 dev_id,
426 tsize, devwidth, DEV_FLAGS_IN | flags);
427 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
428
429 /* We also need to add a target device for the DMA */
430 auide_init_dbdma_dev( &target_dev_tab,
431 (u32)DSCR_CMD0_ALWAYS,
432 tsize, devwidth, DEV_FLAGS_ANYUSE);
433 auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab);
434
435 /* Get a channel for TX */
436 auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id,
437 auide->tx_dev_id,
438 auide_ddma_tx_callback,
439 (void*)auide);
440
441 /* Get a channel for RX */
442 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
443 auide->target_dev_id,
444 auide_ddma_rx_callback,
445 (void*)auide);
446
447 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
448 NUM_DESCRIPTORS);
449 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
450 NUM_DESCRIPTORS);
451
Bartlomiej Zolnierkiewicz5df37c32008-02-01 23:09:31 +0100452 hwif->dmatable_cpu = dma_alloc_coherent(hwif->dev,
Jordan Crouse8f29e652005-12-15 02:17:46 +0100453 PRD_ENTRIES * PRD_BYTES, /* 1 Page */
454 &hwif->dmatable_dma, GFP_KERNEL);
455
456 au1xxx_dbdma_start( auide->tx_chan );
457 au1xxx_dbdma_start( auide->rx_chan );
458
459 return 0;
460}
461#else
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200462static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Pete Popov26a940e2005-09-15 08:03:12 +0000463{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200464 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100465 dbdev_tab_t source_dev_tab;
466 int flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000467
Jordan Crouse8f29e652005-12-15 02:17:46 +0100468#ifdef IDE_AU1XXX_BURSTMODE
469 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
Pete Popov26a940e2005-09-15 08:03:12 +0000470#else
Jordan Crouse8f29e652005-12-15 02:17:46 +0100471 flags = DEV_FLAGS_SYNC;
Pete Popov26a940e2005-09-15 08:03:12 +0000472#endif
473
Jordan Crouse8f29e652005-12-15 02:17:46 +0100474 /* setup dev_tab for tx channel */
475 auide_init_dbdma_dev( &source_dev_tab,
476 (u32)DSCR_CMD0_ALWAYS,
477 8, 32, DEV_FLAGS_OUT | flags);
478 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
Pete Popov26a940e2005-09-15 08:03:12 +0000479
Jordan Crouse8f29e652005-12-15 02:17:46 +0100480 auide_init_dbdma_dev( &source_dev_tab,
481 (u32)DSCR_CMD0_ALWAYS,
482 8, 32, DEV_FLAGS_IN | flags);
483 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
484
485 /* Get a channel for TX */
486 auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS,
487 auide->tx_dev_id,
488 NULL,
489 (void*)auide);
490
491 /* Get a channel for RX */
492 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
493 DSCR_CMD0_ALWAYS,
494 NULL,
495 (void*)auide);
496
497 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
498 NUM_DESCRIPTORS);
499 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
500 NUM_DESCRIPTORS);
501
502 au1xxx_dbdma_start( auide->tx_chan );
503 au1xxx_dbdma_start( auide->rx_chan );
504
505 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000506}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100507#endif
Pete Popov26a940e2005-09-15 08:03:12 +0000508
509static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif)
510{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100511 int i;
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200512 unsigned long *ata_regs = hw->io_ports_array;
Pete Popov26a940e2005-09-15 08:03:12 +0000513
Jordan Crouse8f29e652005-12-15 02:17:46 +0100514 /* FIXME? */
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200515 for (i = 0; i < 8; i++)
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400516 *ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000517
Jordan Crouse8f29e652005-12-15 02:17:46 +0100518 /* set the Alternative Status register */
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400519 *ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000520}
521
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200522#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
523static const struct ide_tp_ops au1xxx_tp_ops = {
524 .exec_command = ide_exec_command,
525 .read_status = ide_read_status,
526 .read_altstatus = ide_read_altstatus,
527 .read_sff_dma_status = ide_read_sff_dma_status,
528
529 .set_irq = ide_set_irq,
530
531 .tf_load = ide_tf_load,
532 .tf_read = ide_tf_read,
533
534 .input_data = au1xxx_input_data,
535 .output_data = au1xxx_output_data,
536};
537#endif
538
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200539static const struct ide_port_ops au1xxx_port_ops = {
540 .set_pio_mode = au1xxx_set_pio_mode,
541 .set_dma_mode = auide_set_dma_mode,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200542};
543
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100544static const struct ide_port_info au1xxx_port_info = {
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200545 .init_dma = auide_ddma_init,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200546#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
547 .tp_ops = &au1xxx_tp_ops,
548#endif
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200549 .port_ops = &au1xxx_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200550#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
551 .dma_ops = &au1xxx_dma_ops,
552#endif
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100553 .host_flags = IDE_HFLAG_POST_SET_MODE |
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +0100554 IDE_HFLAG_NO_IO_32BIT |
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100555 IDE_HFLAG_UNMASK_IRQS,
556 .pio_mask = ATA_PIO4,
557#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
558 .mwdma_mask = ATA_MWDMA2,
559#endif
560};
561
Pete Popov26a940e2005-09-15 08:03:12 +0000562static int au_ide_probe(struct device *dev)
563{
564 struct platform_device *pdev = to_platform_device(dev);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100565 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000566 struct resource *res;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200567 struct ide_host *host;
Pete Popov26a940e2005-09-15 08:03:12 +0000568 int ret = 0;
Bartlomiej Zolnierkiewiczc97c6ac2008-07-23 19:55:50 +0200569 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
Pete Popov26a940e2005-09-15 08:03:12 +0000570
571#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100572 char *mode = "MWDMA2";
Pete Popov26a940e2005-09-15 08:03:12 +0000573#elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100574 char *mode = "PIO+DDMA(offload)";
Pete Popov26a940e2005-09-15 08:03:12 +0000575#endif
576
Jordan Crouse8f29e652005-12-15 02:17:46 +0100577 memset(&auide_hwif, 0, sizeof(_auide_hwif));
Pete Popov26a940e2005-09-15 08:03:12 +0000578 ahwif->irq = platform_get_irq(pdev, 0);
579
580 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
581
582 if (res == NULL) {
583 pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id);
584 ret = -ENODEV;
585 goto out;
586 }
David Vrabel48944732006-01-19 17:56:29 +0000587 if (ahwif->irq < 0) {
588 pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id);
589 ret = -ENODEV;
590 goto out;
591 }
Pete Popov26a940e2005-09-15 08:03:12 +0000592
Sergei Shtylyovb4dcaea2008-04-17 01:14:33 +0200593 if (!request_mem_region(res->start, res->end - res->start + 1,
594 pdev->name)) {
Pete Popov26a940e2005-09-15 08:03:12 +0000595 pr_debug("%s: request_mem_region failed\n", DRV_NAME);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100596 ret = -EBUSY;
Pete Popov26a940e2005-09-15 08:03:12 +0000597 goto out;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100598 }
Pete Popov26a940e2005-09-15 08:03:12 +0000599
Sergei Shtylyovb4dcaea2008-04-17 01:14:33 +0200600 ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1);
Pete Popov26a940e2005-09-15 08:03:12 +0000601 if (ahwif->regbase == 0) {
602 ret = -ENOMEM;
603 goto out;
604 }
605
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +0200606 memset(&hw, 0, sizeof(hw));
607 auide_setup_ports(&hw, ahwif);
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100608 hw.irq = ahwif->irq;
Bartlomiej Zolnierkiewiczed1f7882008-02-01 23:09:32 +0100609 hw.dev = dev;
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100610 hw.chipset = ide_au1xxx;
611
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +0200612 ret = ide_host_add(&au1xxx_port_info, hws, &host);
613 if (ret)
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200614 goto out;
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200615
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200616 auide_hwif.hwif = host->ports[0];
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200617
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200618 dev_set_drvdata(dev, host);
Pete Popov26a940e2005-09-15 08:03:12 +0000619
Jordan Crouse8f29e652005-12-15 02:17:46 +0100620 printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
Pete Popov26a940e2005-09-15 08:03:12 +0000621
Jordan Crouse8f29e652005-12-15 02:17:46 +0100622 out:
623 return ret;
Pete Popov26a940e2005-09-15 08:03:12 +0000624}
625
626static int au_ide_remove(struct device *dev)
627{
628 struct platform_device *pdev = to_platform_device(dev);
629 struct resource *res;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200630 struct ide_host *host = dev_get_drvdata(dev);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100631 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000632
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200633 ide_host_remove(host);
Pete Popov26a940e2005-09-15 08:03:12 +0000634
635 iounmap((void *)ahwif->regbase);
636
637 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
Sergei Shtylyovb4dcaea2008-04-17 01:14:33 +0200638 release_mem_region(res->start, res->end - res->start + 1);
Pete Popov26a940e2005-09-15 08:03:12 +0000639
640 return 0;
641}
642
643static struct device_driver au1200_ide_driver = {
644 .name = "au1200-ide",
645 .bus = &platform_bus_type,
646 .probe = au_ide_probe,
647 .remove = au_ide_remove,
648};
649
650static int __init au_ide_init(void)
651{
652 return driver_register(&au1200_ide_driver);
653}
654
Jordan Crouse8f29e652005-12-15 02:17:46 +0100655static void __exit au_ide_exit(void)
Pete Popov26a940e2005-09-15 08:03:12 +0000656{
657 driver_unregister(&au1200_ide_driver);
658}
659
Pete Popov26a940e2005-09-15 08:03:12 +0000660MODULE_LICENSE("GPL");
661MODULE_DESCRIPTION("AU1200 IDE driver");
662
663module_init(au_ide_init);
664module_exit(au_ide_exit);