blob: 46013644c965c1638faf8f519cd1578a177d114d [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
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 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
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100212static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
Pete Popov26a940e2005-09-15 08:03:12 +0000213{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100214 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200215 _auide_hwif *ahwif = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100216 struct scatterlist *sg;
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100217 int i = cmd->sg_nents, count = 0;
218 int iswrite = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
Pete Popov26a940e2005-09-15 08:03:12 +0000219
Jordan Crouse8f29e652005-12-15 02:17:46 +0100220 /* Save for interrupt context */
221 ahwif->drive = drive;
Pete Popov26a940e2005-09-15 08:03:12 +0000222
Jordan Crouse8f29e652005-12-15 02:17:46 +0100223 /* fill the descriptors */
224 sg = hwif->sg_table;
225 while (i && sg_dma_len(sg)) {
226 u32 cur_addr;
227 u32 cur_len;
Pete Popov26a940e2005-09-15 08:03:12 +0000228
Jordan Crouse8f29e652005-12-15 02:17:46 +0100229 cur_addr = sg_dma_address(sg);
230 cur_len = sg_dma_len(sg);
Pete Popov26a940e2005-09-15 08:03:12 +0000231
Jordan Crouse8f29e652005-12-15 02:17:46 +0100232 while (cur_len) {
233 u32 flags = DDMA_FLAGS_NOIE;
234 unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
Pete Popov26a940e2005-09-15 08:03:12 +0000235
Jordan Crouse8f29e652005-12-15 02:17:46 +0100236 if (++count >= PRD_ENTRIES) {
237 printk(KERN_WARNING "%s: DMA table too small\n",
238 drive->name);
Bartlomiej Zolnierkiewicz11998b32009-03-31 20:15:21 +0200239 return 0;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100240 }
Pete Popov26a940e2005-09-15 08:03:12 +0000241
Jordan Crouse8f29e652005-12-15 02:17:46 +0100242 /* Lets enable intr for the last descriptor only */
243 if (1==i)
244 flags = DDMA_FLAGS_IE;
245 else
246 flags = DDMA_FLAGS_NOIE;
Pete Popov26a940e2005-09-15 08:03:12 +0000247
Jordan Crouse8f29e652005-12-15 02:17:46 +0100248 if (iswrite) {
249 if(!put_source_flags(ahwif->tx_chan,
Jens Axboe45711f12007-10-22 21:19:53 +0200250 (void*) sg_virt(sg),
Jordan Crouse8f29e652005-12-15 02:17:46 +0100251 tc, flags)) {
252 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200253 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000254 }
Jordan Crouse8f29e652005-12-15 02:17:46 +0100255 } else
Pete Popov26a940e2005-09-15 08:03:12 +0000256 {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100257 if(!put_dest_flags(ahwif->rx_chan,
Jens Axboe45711f12007-10-22 21:19:53 +0200258 (void*) sg_virt(sg),
Jordan Crouse8f29e652005-12-15 02:17:46 +0100259 tc, flags)) {
260 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200261 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000262 }
Jordan Crouse8f29e652005-12-15 02:17:46 +0100263 }
Pete Popov26a940e2005-09-15 08:03:12 +0000264
Jordan Crouse8f29e652005-12-15 02:17:46 +0100265 cur_addr += tc;
266 cur_len -= tc;
267 }
Jens Axboe55c16a72007-07-25 08:13:56 +0200268 sg = sg_next(sg);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100269 i--;
270 }
Pete Popov26a940e2005-09-15 08:03:12 +0000271
Jordan Crouse8f29e652005-12-15 02:17:46 +0100272 if (count)
273 return 1;
Pete Popov26a940e2005-09-15 08:03:12 +0000274
Jordan Crouse8f29e652005-12-15 02:17:46 +0100275 return 0; /* revert to PIO for this request */
Pete Popov26a940e2005-09-15 08:03:12 +0000276}
277
278static int auide_dma_end(ide_drive_t *drive)
279{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100280 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000281}
282
283static void auide_dma_start(ide_drive_t *drive )
284{
Pete Popov26a940e2005-09-15 08:03:12 +0000285}
286
Pete Popov26a940e2005-09-15 08:03:12 +0000287
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100288static int auide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
Bartlomiej Zolnierkiewiczb65fac32009-01-06 17:20:50 +0100289{
Bartlomiej Zolnierkiewicz11998b32009-03-31 20:15:21 +0200290 if (auide_build_dmatable(drive, cmd) == 0)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100291 return 1;
Pete Popov26a940e2005-09-15 08:03:12 +0000292
Jordan Crouse8f29e652005-12-15 02:17:46 +0100293 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000294}
295
Pete Popov26a940e2005-09-15 08:03:12 +0000296static int auide_dma_test_irq(ide_drive_t *drive)
Bartlomiej Zolnierkiewiczc67c2162008-10-13 21:39:38 +0200297{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100298 /* If dbdma didn't execute the STOP command yet, the
299 * active bit is still set
Pete Popov26a940e2005-09-15 08:03:12 +0000300 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100301 drive->waiting_for_dma++;
302 if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) {
303 printk(KERN_WARNING "%s: timeout waiting for ddma to \
Pete Popov26a940e2005-09-15 08:03:12 +0000304 complete\n", drive->name);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100305 return 1;
306 }
307 udelay(10);
308 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000309}
310
Bartlomiej Zolnierkiewicz15ce9262008-01-26 20:13:03 +0100311static void auide_dma_host_set(ide_drive_t *drive, int on)
Pete Popov26a940e2005-09-15 08:03:12 +0000312{
Pete Popov26a940e2005-09-15 08:03:12 +0000313}
314
Ralf Baechle53e62d32006-09-25 23:32:10 -0700315static void auide_ddma_tx_callback(int irq, void *param)
Pete Popov26a940e2005-09-15 08:03:12 +0000316{
Pete Popov26a940e2005-09-15 08:03:12 +0000317}
318
Ralf Baechle53e62d32006-09-25 23:32:10 -0700319static void auide_ddma_rx_callback(int irq, void *param)
Pete Popov26a940e2005-09-15 08:03:12 +0000320{
Pete Popov26a940e2005-09-15 08:03:12 +0000321}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100322#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
323
324static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags)
325{
326 dev->dev_id = dev_id;
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400327 dev->dev_physaddr = (u32)IDE_PHYS_ADDR;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100328 dev->dev_intlevel = 0;
329 dev->dev_intpolarity = 0;
330 dev->dev_tsize = tsize;
331 dev->dev_devwidth = devwidth;
332 dev->dev_flags = flags;
333}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100334
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200335#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200336static const struct ide_dma_ops au1xxx_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200337 .dma_host_set = auide_dma_host_set,
338 .dma_setup = auide_dma_setup,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200339 .dma_start = auide_dma_start,
340 .dma_end = auide_dma_end,
341 .dma_test_irq = auide_dma_test_irq,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200342 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200343};
344
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200345static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
346{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200347 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100348 dbdev_tab_t source_dev_tab, target_dev_tab;
349 u32 dev_id, tsize, devwidth, flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000350
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400351 dev_id = IDE_DDMA_REQ;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100352
Bartlomiej Zolnierkiewiczf629b382008-04-26 22:25:22 +0200353 tsize = 8; /* 1 */
354 devwidth = 32; /* 16 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100355
356#ifdef IDE_AU1XXX_BURSTMODE
357 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
358#else
359 flags = DEV_FLAGS_SYNC;
360#endif
361
362 /* setup dev_tab for tx channel */
363 auide_init_dbdma_dev( &source_dev_tab,
364 dev_id,
365 tsize, devwidth, DEV_FLAGS_OUT | flags);
366 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
367
368 auide_init_dbdma_dev( &source_dev_tab,
369 dev_id,
370 tsize, devwidth, DEV_FLAGS_IN | flags);
371 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
372
373 /* We also need to add a target device for the DMA */
374 auide_init_dbdma_dev( &target_dev_tab,
375 (u32)DSCR_CMD0_ALWAYS,
376 tsize, devwidth, DEV_FLAGS_ANYUSE);
377 auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab);
378
379 /* Get a channel for TX */
380 auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id,
381 auide->tx_dev_id,
382 auide_ddma_tx_callback,
383 (void*)auide);
384
385 /* Get a channel for RX */
386 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
387 auide->target_dev_id,
388 auide_ddma_rx_callback,
389 (void*)auide);
390
391 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
392 NUM_DESCRIPTORS);
393 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
394 NUM_DESCRIPTORS);
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200395
396 /* FIXME: check return value */
397 (void)ide_allocate_dma_engine(hwif);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100398
399 au1xxx_dbdma_start( auide->tx_chan );
400 au1xxx_dbdma_start( auide->rx_chan );
401
402 return 0;
403}
404#else
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200405static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Pete Popov26a940e2005-09-15 08:03:12 +0000406{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200407 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100408 dbdev_tab_t source_dev_tab;
409 int flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000410
Jordan Crouse8f29e652005-12-15 02:17:46 +0100411#ifdef IDE_AU1XXX_BURSTMODE
412 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
Pete Popov26a940e2005-09-15 08:03:12 +0000413#else
Jordan Crouse8f29e652005-12-15 02:17:46 +0100414 flags = DEV_FLAGS_SYNC;
Pete Popov26a940e2005-09-15 08:03:12 +0000415#endif
416
Jordan Crouse8f29e652005-12-15 02:17:46 +0100417 /* setup dev_tab for tx channel */
418 auide_init_dbdma_dev( &source_dev_tab,
419 (u32)DSCR_CMD0_ALWAYS,
420 8, 32, DEV_FLAGS_OUT | flags);
421 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
Pete Popov26a940e2005-09-15 08:03:12 +0000422
Jordan Crouse8f29e652005-12-15 02:17:46 +0100423 auide_init_dbdma_dev( &source_dev_tab,
424 (u32)DSCR_CMD0_ALWAYS,
425 8, 32, DEV_FLAGS_IN | flags);
426 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
427
428 /* Get a channel for TX */
429 auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS,
430 auide->tx_dev_id,
431 NULL,
432 (void*)auide);
433
434 /* Get a channel for RX */
435 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
436 DSCR_CMD0_ALWAYS,
437 NULL,
438 (void*)auide);
439
440 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
441 NUM_DESCRIPTORS);
442 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
443 NUM_DESCRIPTORS);
444
445 au1xxx_dbdma_start( auide->tx_chan );
446 au1xxx_dbdma_start( auide->rx_chan );
447
448 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000449}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100450#endif
Pete Popov26a940e2005-09-15 08:03:12 +0000451
452static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif)
453{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100454 int i;
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200455 unsigned long *ata_regs = hw->io_ports_array;
Pete Popov26a940e2005-09-15 08:03:12 +0000456
Jordan Crouse8f29e652005-12-15 02:17:46 +0100457 /* FIXME? */
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200458 for (i = 0; i < 8; i++)
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400459 *ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000460
Jordan Crouse8f29e652005-12-15 02:17:46 +0100461 /* set the Alternative Status register */
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400462 *ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000463}
464
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200465#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
466static const struct ide_tp_ops au1xxx_tp_ops = {
467 .exec_command = ide_exec_command,
468 .read_status = ide_read_status,
469 .read_altstatus = ide_read_altstatus,
Sergei Shtylyovecf3a312009-03-31 20:15:30 +0200470 .write_devctl = ide_write_devctl,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200471
Sergei Shtylyovabb596b2009-03-31 20:15:32 +0200472 .dev_select = ide_dev_select,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200473 .tf_load = ide_tf_load,
474 .tf_read = ide_tf_read,
475
476 .input_data = au1xxx_input_data,
477 .output_data = au1xxx_output_data,
478};
479#endif
480
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200481static const struct ide_port_ops au1xxx_port_ops = {
482 .set_pio_mode = au1xxx_set_pio_mode,
483 .set_dma_mode = auide_set_dma_mode,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200484};
485
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100486static const struct ide_port_info au1xxx_port_info = {
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200487 .init_dma = auide_ddma_init,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200488#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
489 .tp_ops = &au1xxx_tp_ops,
490#endif
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200491 .port_ops = &au1xxx_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200492#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
493 .dma_ops = &au1xxx_dma_ops,
494#endif
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100495 .host_flags = IDE_HFLAG_POST_SET_MODE |
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +0100496 IDE_HFLAG_NO_IO_32BIT |
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100497 IDE_HFLAG_UNMASK_IRQS,
498 .pio_mask = ATA_PIO4,
499#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
500 .mwdma_mask = ATA_MWDMA2,
501#endif
502};
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 Zolnierkiewiczc97c6ac2008-07-23 19:55:50 +0200510 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
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
Sergei Shtylyovb4dcaea2008-04-17 01:14:33 +0200534 if (!request_mem_region(res->start, res->end - res->start + 1,
Ming Lei7a192ec2009-02-06 23:40:12 +0800535 dev->name)) {
Pete Popov26a940e2005-09-15 08:03:12 +0000536 pr_debug("%s: request_mem_region failed\n", DRV_NAME);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100537 ret = -EBUSY;
Pete Popov26a940e2005-09-15 08:03:12 +0000538 goto out;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100539 }
Pete Popov26a940e2005-09-15 08:03:12 +0000540
Sergei Shtylyovb4dcaea2008-04-17 01:14:33 +0200541 ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1);
Pete Popov26a940e2005-09-15 08:03:12 +0000542 if (ahwif->regbase == 0) {
543 ret = -ENOMEM;
544 goto out;
545 }
546
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +0200547 memset(&hw, 0, sizeof(hw));
548 auide_setup_ports(&hw, ahwif);
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100549 hw.irq = ahwif->irq;
Ming Lei7a192ec2009-02-06 23:40:12 +0800550 hw.dev = &dev->dev;
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100551 hw.chipset = ide_au1xxx;
552
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +0200553 ret = ide_host_add(&au1xxx_port_info, hws, &host);
554 if (ret)
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200555 goto out;
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200556
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200557 auide_hwif.hwif = host->ports[0];
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200558
Ming Lei7a192ec2009-02-06 23:40:12 +0800559 platform_set_drvdata(dev, host);
Pete Popov26a940e2005-09-15 08:03:12 +0000560
Jordan Crouse8f29e652005-12-15 02:17:46 +0100561 printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
Pete Popov26a940e2005-09-15 08:03:12 +0000562
Jordan Crouse8f29e652005-12-15 02:17:46 +0100563 out:
564 return ret;
Pete Popov26a940e2005-09-15 08:03:12 +0000565}
566
Ming Lei7a192ec2009-02-06 23:40:12 +0800567static int au_ide_remove(struct platform_device *dev)
Pete Popov26a940e2005-09-15 08:03:12 +0000568{
Pete Popov26a940e2005-09-15 08:03:12 +0000569 struct resource *res;
Ming Lei7a192ec2009-02-06 23:40:12 +0800570 struct ide_host *host = platform_get_drvdata(dev);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100571 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000572
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200573 ide_host_remove(host);
Pete Popov26a940e2005-09-15 08:03:12 +0000574
575 iounmap((void *)ahwif->regbase);
576
Ming Lei7a192ec2009-02-06 23:40:12 +0800577 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
Sergei Shtylyovb4dcaea2008-04-17 01:14:33 +0200578 release_mem_region(res->start, res->end - res->start + 1);
Pete Popov26a940e2005-09-15 08:03:12 +0000579
580 return 0;
581}
582
Ming Lei7a192ec2009-02-06 23:40:12 +0800583static struct platform_driver au1200_ide_driver = {
584 .driver = {
585 .name = "au1200-ide",
586 .owner = THIS_MODULE,
587 },
Pete Popov26a940e2005-09-15 08:03:12 +0000588 .probe = au_ide_probe,
589 .remove = au_ide_remove,
590};
591
592static int __init au_ide_init(void)
593{
Ming Lei7a192ec2009-02-06 23:40:12 +0800594 return platform_driver_register(&au1200_ide_driver);
Pete Popov26a940e2005-09-15 08:03:12 +0000595}
596
Jordan Crouse8f29e652005-12-15 02:17:46 +0100597static void __exit au_ide_exit(void)
Pete Popov26a940e2005-09-15 08:03:12 +0000598{
Ming Lei7a192ec2009-02-06 23:40:12 +0800599 platform_driver_unregister(&au1200_ide_driver);
Pete Popov26a940e2005-09-15 08:03:12 +0000600}
601
Pete Popov26a940e2005-09-15 08:03:12 +0000602MODULE_LICENSE("GPL");
603MODULE_DESCRIPTION("AU1200 IDE driver");
604
605module_init(au_ide_init);
606module_exit(au_ide_exit);