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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
Sergei Shtylyov985232e2009-03-31 20:15:27 +020053static inline void auide_insw(unsigned long port, void *addr, u32 count)
Pete Popov26a940e2005-09-15 08:03:12 +000054{
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
Sergei Shtylyov985232e2009-03-31 20:15:27 +020071static inline void auide_outsw(unsigned long port, void *addr, u32 count)
Pete Popov26a940e2005-09-15 08:03:12 +000072{
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 Zolnierkiewiczadb1af92009-03-27 12:46:38 +010089static void au1xxx_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
Bartlomiej Zolnierkiewicz70f91e02008-04-28 23:44:37 +020090 void *buf, unsigned int len)
91{
92 auide_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
93}
94
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010095static void au1xxx_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
Bartlomiej Zolnierkiewicz70f91e02008-04-28 23:44:37 +020096 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 Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800102static void au1xxx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
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
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800106 switch (drive->pio_mode - XFER_PIO_0) {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100107 case 0:
108 mem_sttime = SBC_IDE_TIMING(PIO0);
Pete Popov26a940e2005-09-15 08:03:12 +0000109
Jordan Crouse8f29e652005-12-15 02:17:46 +0100110 /* set configuration for RCS2# */
111 mem_stcfg |= TS_MASK;
112 mem_stcfg &= ~TCSOE_MASK;
113 mem_stcfg &= ~TOECS_MASK;
114 mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS;
115 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000116
Jordan Crouse8f29e652005-12-15 02:17:46 +0100117 case 1:
118 mem_sttime = SBC_IDE_TIMING(PIO1);
Pete Popov26a940e2005-09-15 08:03:12 +0000119
Jordan Crouse8f29e652005-12-15 02:17:46 +0100120 /* set configuration for RCS2# */
121 mem_stcfg |= TS_MASK;
122 mem_stcfg &= ~TCSOE_MASK;
123 mem_stcfg &= ~TOECS_MASK;
124 mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS;
125 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000126
Jordan Crouse8f29e652005-12-15 02:17:46 +0100127 case 2:
128 mem_sttime = SBC_IDE_TIMING(PIO2);
Pete Popov26a940e2005-09-15 08:03:12 +0000129
Jordan Crouse8f29e652005-12-15 02:17:46 +0100130 /* set configuration for RCS2# */
131 mem_stcfg &= ~TS_MASK;
132 mem_stcfg &= ~TCSOE_MASK;
133 mem_stcfg &= ~TOECS_MASK;
134 mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS;
135 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000136
Jordan Crouse8f29e652005-12-15 02:17:46 +0100137 case 3:
138 mem_sttime = SBC_IDE_TIMING(PIO3);
Pete Popov26a940e2005-09-15 08:03:12 +0000139
Jordan Crouse8f29e652005-12-15 02:17:46 +0100140 /* set configuration for RCS2# */
141 mem_stcfg &= ~TS_MASK;
142 mem_stcfg &= ~TCSOE_MASK;
143 mem_stcfg &= ~TOECS_MASK;
144 mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS;
Pete Popov26a940e2005-09-15 08:03:12 +0000145
Jordan Crouse8f29e652005-12-15 02:17:46 +0100146 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000147
Jordan Crouse8f29e652005-12-15 02:17:46 +0100148 case 4:
149 mem_sttime = SBC_IDE_TIMING(PIO4);
Pete Popov26a940e2005-09-15 08:03:12 +0000150
Jordan Crouse8f29e652005-12-15 02:17:46 +0100151 /* set configuration for RCS2# */
152 mem_stcfg &= ~TS_MASK;
153 mem_stcfg &= ~TCSOE_MASK;
154 mem_stcfg &= ~TOECS_MASK;
155 mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS;
156 break;
157 }
158
159 au_writel(mem_sttime,MEM_STTIME2);
160 au_writel(mem_stcfg,MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000161}
162
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200163static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed)
Pete Popov26a940e2005-09-15 08:03:12 +0000164{
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200165 int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000166
Jordan Crouse8f29e652005-12-15 02:17:46 +0100167 switch(speed) {
Pete Popov26a940e2005-09-15 08:03:12 +0000168#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Jordan Crouse8f29e652005-12-15 02:17:46 +0100169 case XFER_MW_DMA_2:
170 mem_sttime = SBC_IDE_TIMING(MDMA2);
Pete Popov26a940e2005-09-15 08:03:12 +0000171
Jordan Crouse8f29e652005-12-15 02:17:46 +0100172 /* set configuration for RCS2# */
173 mem_stcfg &= ~TS_MASK;
174 mem_stcfg &= ~TCSOE_MASK;
175 mem_stcfg &= ~TOECS_MASK;
176 mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS;
Pete Popov26a940e2005-09-15 08:03:12 +0000177
Jordan Crouse8f29e652005-12-15 02:17:46 +0100178 break;
179 case XFER_MW_DMA_1:
180 mem_sttime = SBC_IDE_TIMING(MDMA1);
Pete Popov26a940e2005-09-15 08:03:12 +0000181
Jordan Crouse8f29e652005-12-15 02:17:46 +0100182 /* set configuration for RCS2# */
183 mem_stcfg &= ~TS_MASK;
184 mem_stcfg &= ~TCSOE_MASK;
185 mem_stcfg &= ~TOECS_MASK;
186 mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS;
187
Jordan Crouse8f29e652005-12-15 02:17:46 +0100188 break;
189 case XFER_MW_DMA_0:
190 mem_sttime = SBC_IDE_TIMING(MDMA0);
191
192 /* set configuration for RCS2# */
193 mem_stcfg |= TS_MASK;
194 mem_stcfg &= ~TCSOE_MASK;
195 mem_stcfg &= ~TOECS_MASK;
196 mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS;
197
Jordan Crouse8f29e652005-12-15 02:17:46 +0100198 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000199#endif
Jordan Crouse8f29e652005-12-15 02:17:46 +0100200 }
Bartlomiej Zolnierkiewicza523a172007-02-17 02:40:23 +0100201
Jordan Crouse8f29e652005-12-15 02:17:46 +0100202 au_writel(mem_sttime,MEM_STTIME2);
203 au_writel(mem_stcfg,MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000204}
205
206/*
207 * Multi-Word DMA + DbDMA functions
208 */
Pete Popov26a940e2005-09-15 08:03:12 +0000209
Jordan Crouse8f29e652005-12-15 02:17:46 +0100210#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100211static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
Pete Popov26a940e2005-09-15 08:03:12 +0000212{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100213 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200214 _auide_hwif *ahwif = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100215 struct scatterlist *sg;
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100216 int i = cmd->sg_nents, count = 0;
217 int iswrite = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
Pete Popov26a940e2005-09-15 08:03:12 +0000218
Jordan Crouse8f29e652005-12-15 02:17:46 +0100219 /* Save for interrupt context */
220 ahwif->drive = drive;
Pete Popov26a940e2005-09-15 08:03:12 +0000221
Jordan Crouse8f29e652005-12-15 02:17:46 +0100222 /* fill the descriptors */
223 sg = hwif->sg_table;
224 while (i && sg_dma_len(sg)) {
225 u32 cur_addr;
226 u32 cur_len;
Pete Popov26a940e2005-09-15 08:03:12 +0000227
Jordan Crouse8f29e652005-12-15 02:17:46 +0100228 cur_addr = sg_dma_address(sg);
229 cur_len = sg_dma_len(sg);
Pete Popov26a940e2005-09-15 08:03:12 +0000230
Jordan Crouse8f29e652005-12-15 02:17:46 +0100231 while (cur_len) {
232 u32 flags = DDMA_FLAGS_NOIE;
233 unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
Pete Popov26a940e2005-09-15 08:03:12 +0000234
Jordan Crouse8f29e652005-12-15 02:17:46 +0100235 if (++count >= PRD_ENTRIES) {
236 printk(KERN_WARNING "%s: DMA table too small\n",
237 drive->name);
Bartlomiej Zolnierkiewicz11998b32009-03-31 20:15:21 +0200238 return 0;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100239 }
Pete Popov26a940e2005-09-15 08:03:12 +0000240
Jordan Crouse8f29e652005-12-15 02:17:46 +0100241 /* Lets enable intr for the last descriptor only */
242 if (1==i)
243 flags = DDMA_FLAGS_IE;
244 else
245 flags = DDMA_FLAGS_NOIE;
Pete Popov26a940e2005-09-15 08:03:12 +0000246
Jordan Crouse8f29e652005-12-15 02:17:46 +0100247 if (iswrite) {
248 if(!put_source_flags(ahwif->tx_chan,
Jens Axboe45711f12007-10-22 21:19:53 +0200249 (void*) sg_virt(sg),
Jordan Crouse8f29e652005-12-15 02:17:46 +0100250 tc, flags)) {
251 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200252 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000253 }
Jordan Crouse8f29e652005-12-15 02:17:46 +0100254 } else
Pete Popov26a940e2005-09-15 08:03:12 +0000255 {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100256 if(!put_dest_flags(ahwif->rx_chan,
Jens Axboe45711f12007-10-22 21:19:53 +0200257 (void*) sg_virt(sg),
Jordan Crouse8f29e652005-12-15 02:17:46 +0100258 tc, flags)) {
259 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200260 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000261 }
Jordan Crouse8f29e652005-12-15 02:17:46 +0100262 }
Pete Popov26a940e2005-09-15 08:03:12 +0000263
Jordan Crouse8f29e652005-12-15 02:17:46 +0100264 cur_addr += tc;
265 cur_len -= tc;
266 }
Jens Axboe55c16a72007-07-25 08:13:56 +0200267 sg = sg_next(sg);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100268 i--;
269 }
Pete Popov26a940e2005-09-15 08:03:12 +0000270
Jordan Crouse8f29e652005-12-15 02:17:46 +0100271 if (count)
272 return 1;
Pete Popov26a940e2005-09-15 08:03:12 +0000273
Jordan Crouse8f29e652005-12-15 02:17:46 +0100274 return 0; /* revert to PIO for this request */
Pete Popov26a940e2005-09-15 08:03:12 +0000275}
276
277static int auide_dma_end(ide_drive_t *drive)
278{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100279 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000280}
281
282static void auide_dma_start(ide_drive_t *drive )
283{
Pete Popov26a940e2005-09-15 08:03:12 +0000284}
285
Pete Popov26a940e2005-09-15 08:03:12 +0000286
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100287static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100288{
Bartlomiej Zolnierkiewicz11998b32009-03-31 20:15:21 +0200289 if (auide_build_dmatable(drive, cmd) == 0)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100290 return 1;
Pete Popov26a940e2005-09-15 08:03:12 +0000291
Jordan Crouse8f29e652005-12-15 02:17:46 +0100292 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000293}
294
Pete Popov26a940e2005-09-15 08:03:12 +0000295static int auide_dma_test_irq(ide_drive_t *drive)
Bartlomiej Zolnierkiewiczc67c2162008-10-13 21:39:38 +0200296{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100297 /* If dbdma didn't execute the STOP command yet, the
298 * active bit is still set
Pete Popov26a940e2005-09-15 08:03:12 +0000299 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100300 drive->waiting_for_dma++;
301 if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) {
302 printk(KERN_WARNING "%s: timeout waiting for ddma to \
Pete Popov26a940e2005-09-15 08:03:12 +0000303 complete\n", drive->name);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100304 return 1;
305 }
306 udelay(10);
307 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000308}
309
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100310static void auide_dma_host_set(ide_drive_t *drive, int on)
Pete Popov26a940e2005-09-15 08:03:12 +0000311{
Pete Popov26a940e2005-09-15 08:03:12 +0000312}
313
Ralf Baechle53e62d32006-09-25 23:32:10 -0700314static void auide_ddma_tx_callback(int irq, void *param)
Pete Popov26a940e2005-09-15 08:03:12 +0000315{
Pete Popov26a940e2005-09-15 08:03:12 +0000316}
317
Ralf Baechle53e62d32006-09-25 23:32:10 -0700318static void auide_ddma_rx_callback(int irq, void *param)
Pete Popov26a940e2005-09-15 08:03:12 +0000319{
Pete Popov26a940e2005-09-15 08:03:12 +0000320}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100321#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
322
323static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags)
324{
325 dev->dev_id = dev_id;
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400326 dev->dev_physaddr = (u32)IDE_PHYS_ADDR;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100327 dev->dev_intlevel = 0;
328 dev->dev_intpolarity = 0;
329 dev->dev_tsize = tsize;
330 dev->dev_devwidth = devwidth;
331 dev->dev_flags = flags;
332}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100333
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200334#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200335static const struct ide_dma_ops au1xxx_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200336 .dma_host_set = auide_dma_host_set,
337 .dma_setup = auide_dma_setup,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200338 .dma_start = auide_dma_start,
339 .dma_end = auide_dma_end,
340 .dma_test_irq = auide_dma_test_irq,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200341 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200342};
343
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200344static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
345{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200346 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100347 dbdev_tab_t source_dev_tab, target_dev_tab;
348 u32 dev_id, tsize, devwidth, flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000349
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400350 dev_id = IDE_DDMA_REQ;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100351
Bartlomiej Zolnierkiewiczf629b382008-04-26 22:25:22 +0200352 tsize = 8; /* 1 */
353 devwidth = 32; /* 16 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100354
355#ifdef IDE_AU1XXX_BURSTMODE
356 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
357#else
358 flags = DEV_FLAGS_SYNC;
359#endif
360
361 /* setup dev_tab for tx channel */
362 auide_init_dbdma_dev( &source_dev_tab,
363 dev_id,
364 tsize, devwidth, DEV_FLAGS_OUT | flags);
365 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
366
367 auide_init_dbdma_dev( &source_dev_tab,
368 dev_id,
369 tsize, devwidth, DEV_FLAGS_IN | flags);
370 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
371
372 /* We also need to add a target device for the DMA */
373 auide_init_dbdma_dev( &target_dev_tab,
374 (u32)DSCR_CMD0_ALWAYS,
375 tsize, devwidth, DEV_FLAGS_ANYUSE);
376 auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab);
377
378 /* Get a channel for TX */
379 auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id,
380 auide->tx_dev_id,
381 auide_ddma_tx_callback,
382 (void*)auide);
383
384 /* Get a channel for RX */
385 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
386 auide->target_dev_id,
387 auide_ddma_rx_callback,
388 (void*)auide);
389
390 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
391 NUM_DESCRIPTORS);
392 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
393 NUM_DESCRIPTORS);
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200394
395 /* FIXME: check return value */
396 (void)ide_allocate_dma_engine(hwif);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100397
398 au1xxx_dbdma_start( auide->tx_chan );
399 au1xxx_dbdma_start( auide->rx_chan );
400
401 return 0;
402}
403#else
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200404static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Pete Popov26a940e2005-09-15 08:03:12 +0000405{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200406 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100407 dbdev_tab_t source_dev_tab;
408 int flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000409
Jordan Crouse8f29e652005-12-15 02:17:46 +0100410#ifdef IDE_AU1XXX_BURSTMODE
411 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
Pete Popov26a940e2005-09-15 08:03:12 +0000412#else
Jordan Crouse8f29e652005-12-15 02:17:46 +0100413 flags = DEV_FLAGS_SYNC;
Pete Popov26a940e2005-09-15 08:03:12 +0000414#endif
415
Jordan Crouse8f29e652005-12-15 02:17:46 +0100416 /* setup dev_tab for tx channel */
417 auide_init_dbdma_dev( &source_dev_tab,
418 (u32)DSCR_CMD0_ALWAYS,
419 8, 32, DEV_FLAGS_OUT | flags);
420 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
Pete Popov26a940e2005-09-15 08:03:12 +0000421
Jordan Crouse8f29e652005-12-15 02:17:46 +0100422 auide_init_dbdma_dev( &source_dev_tab,
423 (u32)DSCR_CMD0_ALWAYS,
424 8, 32, DEV_FLAGS_IN | flags);
425 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
426
427 /* Get a channel for TX */
428 auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS,
429 auide->tx_dev_id,
430 NULL,
431 (void*)auide);
432
433 /* Get a channel for RX */
434 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
435 DSCR_CMD0_ALWAYS,
436 NULL,
437 (void*)auide);
438
439 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
440 NUM_DESCRIPTORS);
441 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
442 NUM_DESCRIPTORS);
443
444 au1xxx_dbdma_start( auide->tx_chan );
445 au1xxx_dbdma_start( auide->rx_chan );
446
447 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000448}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100449#endif
Pete Popov26a940e2005-09-15 08:03:12 +0000450
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200451static void auide_setup_ports(struct ide_hw *hw, _auide_hwif *ahwif)
Pete Popov26a940e2005-09-15 08:03:12 +0000452{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100453 int i;
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200454 unsigned long *ata_regs = hw->io_ports_array;
Pete Popov26a940e2005-09-15 08:03:12 +0000455
Jordan Crouse8f29e652005-12-15 02:17:46 +0100456 /* FIXME? */
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200457 for (i = 0; i < 8; i++)
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400458 *ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000459
Jordan Crouse8f29e652005-12-15 02:17:46 +0100460 /* set the Alternative Status register */
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400461 *ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000462}
463
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200464#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
465static const struct ide_tp_ops au1xxx_tp_ops = {
466 .exec_command = ide_exec_command,
467 .read_status = ide_read_status,
468 .read_altstatus = ide_read_altstatus,
Sergei Shtylyovecf3a312009-03-31 20:15:30 +0200469 .write_devctl = ide_write_devctl,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200470
Sergei Shtylyovabb596b2009-03-31 20:15:32 +0200471 .dev_select = ide_dev_select,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200472 .tf_load = ide_tf_load,
473 .tf_read = ide_tf_read,
474
475 .input_data = au1xxx_input_data,
476 .output_data = au1xxx_output_data,
477};
478#endif
479
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200480static const struct ide_port_ops au1xxx_port_ops = {
481 .set_pio_mode = au1xxx_set_pio_mode,
482 .set_dma_mode = auide_set_dma_mode,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200483};
484
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100485static const struct ide_port_info au1xxx_port_info = {
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200486 .init_dma = auide_ddma_init,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200487#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
488 .tp_ops = &au1xxx_tp_ops,
489#endif
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200490 .port_ops = &au1xxx_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200491#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
492 .dma_ops = &au1xxx_dma_ops,
493#endif
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100494 .host_flags = IDE_HFLAG_POST_SET_MODE |
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +0100495 IDE_HFLAG_NO_IO_32BIT |
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100496 IDE_HFLAG_UNMASK_IRQS,
497 .pio_mask = ATA_PIO4,
498#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
499 .mwdma_mask = ATA_MWDMA2,
500#endif
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200501 .chipset = ide_au1xxx,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100502};
503
Ming Lei7a192ec2009-02-06 23:40:12 +0800504static int au_ide_probe(struct platform_device *dev)
Pete Popov26a940e2005-09-15 08:03:12 +0000505{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100506 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000507 struct resource *res;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200508 struct ide_host *host;
Pete Popov26a940e2005-09-15 08:03:12 +0000509 int ret = 0;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200510 struct ide_hw hw, *hws[] = { &hw };
Pete Popov26a940e2005-09-15 08:03:12 +0000511
512#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100513 char *mode = "MWDMA2";
Pete Popov26a940e2005-09-15 08:03:12 +0000514#elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100515 char *mode = "PIO+DDMA(offload)";
Pete Popov26a940e2005-09-15 08:03:12 +0000516#endif
517
Jordan Crouse8f29e652005-12-15 02:17:46 +0100518 memset(&auide_hwif, 0, sizeof(_auide_hwif));
Ming Lei7a192ec2009-02-06 23:40:12 +0800519 ahwif->irq = platform_get_irq(dev, 0);
Pete Popov26a940e2005-09-15 08:03:12 +0000520
Ming Lei7a192ec2009-02-06 23:40:12 +0800521 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
Pete Popov26a940e2005-09-15 08:03:12 +0000522
523 if (res == NULL) {
Ming Lei7a192ec2009-02-06 23:40:12 +0800524 pr_debug("%s %d: no base address\n", DRV_NAME, dev->id);
Pete Popov26a940e2005-09-15 08:03:12 +0000525 ret = -ENODEV;
526 goto out;
527 }
David Vrabel48944732006-01-19 17:56:29 +0000528 if (ahwif->irq < 0) {
Ming Lei7a192ec2009-02-06 23:40:12 +0800529 pr_debug("%s %d: no IRQ\n", DRV_NAME, dev->id);
David Vrabel48944732006-01-19 17:56:29 +0000530 ret = -ENODEV;
531 goto out;
532 }
Pete Popov26a940e2005-09-15 08:03:12 +0000533
H Hartley Sweeten4b7c7232009-11-23 10:27:22 -0800534 if (!request_mem_region(res->start, resource_size(res), dev->name)) {
Pete Popov26a940e2005-09-15 08:03:12 +0000535 pr_debug("%s: request_mem_region failed\n", DRV_NAME);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100536 ret = -EBUSY;
Pete Popov26a940e2005-09-15 08:03:12 +0000537 goto out;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100538 }
Pete Popov26a940e2005-09-15 08:03:12 +0000539
H Hartley Sweeten4b7c7232009-11-23 10:27:22 -0800540 ahwif->regbase = (u32)ioremap(res->start, resource_size(res));
Pete Popov26a940e2005-09-15 08:03:12 +0000541 if (ahwif->regbase == 0) {
542 ret = -ENOMEM;
543 goto out;
544 }
545
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +0200546 memset(&hw, 0, sizeof(hw));
547 auide_setup_ports(&hw, ahwif);
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100548 hw.irq = ahwif->irq;
Ming Lei7a192ec2009-02-06 23:40:12 +0800549 hw.dev = &dev->dev;
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100550
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200551 ret = ide_host_add(&au1xxx_port_info, hws, 1, &host);
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +0200552 if (ret)
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200553 goto out;
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200554
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200555 auide_hwif.hwif = host->ports[0];
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200556
Ming Lei7a192ec2009-02-06 23:40:12 +0800557 platform_set_drvdata(dev, host);
Pete Popov26a940e2005-09-15 08:03:12 +0000558
Jordan Crouse8f29e652005-12-15 02:17:46 +0100559 printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
Pete Popov26a940e2005-09-15 08:03:12 +0000560
Jordan Crouse8f29e652005-12-15 02:17:46 +0100561 out:
562 return ret;
Pete Popov26a940e2005-09-15 08:03:12 +0000563}
564
Ming Lei7a192ec2009-02-06 23:40:12 +0800565static int au_ide_remove(struct platform_device *dev)
Pete Popov26a940e2005-09-15 08:03:12 +0000566{
Pete Popov26a940e2005-09-15 08:03:12 +0000567 struct resource *res;
Ming Lei7a192ec2009-02-06 23:40:12 +0800568 struct ide_host *host = platform_get_drvdata(dev);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100569 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000570
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200571 ide_host_remove(host);
Pete Popov26a940e2005-09-15 08:03:12 +0000572
573 iounmap((void *)ahwif->regbase);
574
Ming Lei7a192ec2009-02-06 23:40:12 +0800575 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
H Hartley Sweeten4b7c7232009-11-23 10:27:22 -0800576 release_mem_region(res->start, resource_size(res));
Pete Popov26a940e2005-09-15 08:03:12 +0000577
578 return 0;
579}
580
Ming Lei7a192ec2009-02-06 23:40:12 +0800581static struct platform_driver au1200_ide_driver = {
582 .driver = {
583 .name = "au1200-ide",
584 .owner = THIS_MODULE,
585 },
Pete Popov26a940e2005-09-15 08:03:12 +0000586 .probe = au_ide_probe,
587 .remove = au_ide_remove,
588};
589
590static int __init au_ide_init(void)
591{
Ming Lei7a192ec2009-02-06 23:40:12 +0800592 return platform_driver_register(&au1200_ide_driver);
Pete Popov26a940e2005-09-15 08:03:12 +0000593}
594
Jordan Crouse8f29e652005-12-15 02:17:46 +0100595static void __exit au_ide_exit(void)
Pete Popov26a940e2005-09-15 08:03:12 +0000596{
Ming Lei7a192ec2009-02-06 23:40:12 +0800597 platform_driver_unregister(&au1200_ide_driver);
Pete Popov26a940e2005-09-15 08:03:12 +0000598}
599
Pete Popov26a940e2005-09-15 08:03:12 +0000600MODULE_LICENSE("GPL");
601MODULE_DESCRIPTION("AU1200 IDE driver");
602
603module_init(au_ide_init);
604module_exit(au_ide_exit);