blob: 259786ca8b7551c8e0afd03d843e6eef5b4ea9bb [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
Manuel Lauss50d56762011-08-12 11:39:43 +020039#include <asm/mach-au1x00/au1000.h>
Pete Popov26a940e2005-09-15 08:03:12 +000040#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
Manuel Laussd4f07ae2011-08-18 11:11:58 +020046#ifndef IDE_REG_SHIFT
47#define IDE_REG_SHIFT 5
48#endif
49
Jordan Crouse8f29e652005-12-15 02:17:46 +010050/* enable the burstmode in the dbdma */
51#define IDE_AU1XXX_BURSTMODE 1
Pete Popov26a940e2005-09-15 08:03:12 +000052
53static _auide_hwif auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +000054
Jordan Crouse8f29e652005-12-15 02:17:46 +010055#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
Pete Popov26a940e2005-09-15 08:03:12 +000056
Sergei Shtylyov985232e2009-03-31 20:15:27 +020057static inline void auide_insw(unsigned long port, void *addr, u32 count)
Pete Popov26a940e2005-09-15 08:03:12 +000058{
Jordan Crouse8f29e652005-12-15 02:17:46 +010059 _auide_hwif *ahwif = &auide_hwif;
60 chan_tab_t *ctp;
61 au1x_ddma_desc_t *dp;
Pete Popov26a940e2005-09-15 08:03:12 +000062
Manuel Lauss963accb2009-10-13 20:22:35 +020063 if (!au1xxx_dbdma_put_dest(ahwif->rx_chan, virt_to_phys(addr),
Manuel Laussea071cc2009-10-13 20:22:34 +020064 count << 1, DDMA_FLAGS_NOIE)) {
Harvey Harrisoneb639632008-04-26 22:25:20 +020065 printk(KERN_ERR "%s failed %d\n", __func__, __LINE__);
Jordan Crouse8f29e652005-12-15 02:17:46 +010066 return;
67 }
68 ctp = *((chan_tab_t **)ahwif->rx_chan);
69 dp = ctp->cur_ptr;
70 while (dp->dscr_cmd0 & DSCR_CMD0_V)
71 ;
72 ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp);
Pete Popov26a940e2005-09-15 08:03:12 +000073}
74
Sergei Shtylyov985232e2009-03-31 20:15:27 +020075static inline void auide_outsw(unsigned long port, void *addr, u32 count)
Pete Popov26a940e2005-09-15 08:03:12 +000076{
Jordan Crouse8f29e652005-12-15 02:17:46 +010077 _auide_hwif *ahwif = &auide_hwif;
78 chan_tab_t *ctp;
79 au1x_ddma_desc_t *dp;
Pete Popov26a940e2005-09-15 08:03:12 +000080
Manuel Lauss963accb2009-10-13 20:22:35 +020081 if (!au1xxx_dbdma_put_source(ahwif->tx_chan, virt_to_phys(addr),
Manuel Laussea071cc2009-10-13 20:22:34 +020082 count << 1, DDMA_FLAGS_NOIE)) {
Harvey Harrisoneb639632008-04-26 22:25:20 +020083 printk(KERN_ERR "%s failed %d\n", __func__, __LINE__);
Jordan Crouse8f29e652005-12-15 02:17:46 +010084 return;
85 }
86 ctp = *((chan_tab_t **)ahwif->tx_chan);
87 dp = ctp->cur_ptr;
88 while (dp->dscr_cmd0 & DSCR_CMD0_V)
89 ;
90 ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp);
91}
92
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010093static void au1xxx_input_data(ide_drive_t *drive, struct ide_cmd *cmd,
Bartlomiej Zolnierkiewicz70f91e02008-04-28 23:44:37 +020094 void *buf, unsigned int len)
95{
96 auide_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
97}
98
Bartlomiej Zolnierkiewiczadb1af92009-03-27 12:46:38 +010099static void au1xxx_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
Bartlomiej Zolnierkiewicz70f91e02008-04-28 23:44:37 +0200100 void *buf, unsigned int len)
101{
102 auide_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
103}
Pete Popov26a940e2005-09-15 08:03:12 +0000104#endif
Pete Popov26a940e2005-09-15 08:03:12 +0000105
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800106static void au1xxx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Pete Popov26a940e2005-09-15 08:03:12 +0000107{
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200108 int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000109
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800110 switch (drive->pio_mode - XFER_PIO_0) {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100111 case 0:
112 mem_sttime = SBC_IDE_TIMING(PIO0);
Pete Popov26a940e2005-09-15 08:03:12 +0000113
Jordan Crouse8f29e652005-12-15 02:17:46 +0100114 /* set configuration for RCS2# */
115 mem_stcfg |= TS_MASK;
116 mem_stcfg &= ~TCSOE_MASK;
117 mem_stcfg &= ~TOECS_MASK;
118 mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS;
119 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000120
Jordan Crouse8f29e652005-12-15 02:17:46 +0100121 case 1:
122 mem_sttime = SBC_IDE_TIMING(PIO1);
Pete Popov26a940e2005-09-15 08:03:12 +0000123
Jordan Crouse8f29e652005-12-15 02:17:46 +0100124 /* set configuration for RCS2# */
125 mem_stcfg |= TS_MASK;
126 mem_stcfg &= ~TCSOE_MASK;
127 mem_stcfg &= ~TOECS_MASK;
128 mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS;
129 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000130
Jordan Crouse8f29e652005-12-15 02:17:46 +0100131 case 2:
132 mem_sttime = SBC_IDE_TIMING(PIO2);
Pete Popov26a940e2005-09-15 08:03:12 +0000133
Jordan Crouse8f29e652005-12-15 02:17:46 +0100134 /* set configuration for RCS2# */
135 mem_stcfg &= ~TS_MASK;
136 mem_stcfg &= ~TCSOE_MASK;
137 mem_stcfg &= ~TOECS_MASK;
138 mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS;
139 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000140
Jordan Crouse8f29e652005-12-15 02:17:46 +0100141 case 3:
142 mem_sttime = SBC_IDE_TIMING(PIO3);
Pete Popov26a940e2005-09-15 08:03:12 +0000143
Jordan Crouse8f29e652005-12-15 02:17:46 +0100144 /* set configuration for RCS2# */
145 mem_stcfg &= ~TS_MASK;
146 mem_stcfg &= ~TCSOE_MASK;
147 mem_stcfg &= ~TOECS_MASK;
148 mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS;
Pete Popov26a940e2005-09-15 08:03:12 +0000149
Jordan Crouse8f29e652005-12-15 02:17:46 +0100150 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000151
Jordan Crouse8f29e652005-12-15 02:17:46 +0100152 case 4:
153 mem_sttime = SBC_IDE_TIMING(PIO4);
Pete Popov26a940e2005-09-15 08:03:12 +0000154
Jordan Crouse8f29e652005-12-15 02:17:46 +0100155 /* set configuration for RCS2# */
156 mem_stcfg &= ~TS_MASK;
157 mem_stcfg &= ~TCSOE_MASK;
158 mem_stcfg &= ~TOECS_MASK;
159 mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS;
160 break;
161 }
162
163 au_writel(mem_sttime,MEM_STTIME2);
164 au_writel(mem_stcfg,MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000165}
166
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800167static void auide_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Pete Popov26a940e2005-09-15 08:03:12 +0000168{
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200169 int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000170
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800171 switch (drive->dma_mode) {
Pete Popov26a940e2005-09-15 08:03:12 +0000172#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Jordan Crouse8f29e652005-12-15 02:17:46 +0100173 case XFER_MW_DMA_2:
174 mem_sttime = SBC_IDE_TIMING(MDMA2);
Pete Popov26a940e2005-09-15 08:03:12 +0000175
Jordan Crouse8f29e652005-12-15 02:17:46 +0100176 /* set configuration for RCS2# */
177 mem_stcfg &= ~TS_MASK;
178 mem_stcfg &= ~TCSOE_MASK;
179 mem_stcfg &= ~TOECS_MASK;
180 mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS;
Pete Popov26a940e2005-09-15 08:03:12 +0000181
Jordan Crouse8f29e652005-12-15 02:17:46 +0100182 break;
183 case XFER_MW_DMA_1:
184 mem_sttime = SBC_IDE_TIMING(MDMA1);
Pete Popov26a940e2005-09-15 08:03:12 +0000185
Jordan Crouse8f29e652005-12-15 02:17:46 +0100186 /* set configuration for RCS2# */
187 mem_stcfg &= ~TS_MASK;
188 mem_stcfg &= ~TCSOE_MASK;
189 mem_stcfg &= ~TOECS_MASK;
190 mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS;
191
Jordan Crouse8f29e652005-12-15 02:17:46 +0100192 break;
193 case XFER_MW_DMA_0:
194 mem_sttime = SBC_IDE_TIMING(MDMA0);
195
196 /* set configuration for RCS2# */
197 mem_stcfg |= TS_MASK;
198 mem_stcfg &= ~TCSOE_MASK;
199 mem_stcfg &= ~TOECS_MASK;
200 mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS;
201
Jordan Crouse8f29e652005-12-15 02:17:46 +0100202 break;
Pete Popov26a940e2005-09-15 08:03:12 +0000203#endif
Jordan Crouse8f29e652005-12-15 02:17:46 +0100204 }
Bartlomiej Zolnierkiewicza523a172007-02-17 02:40:23 +0100205
Jordan Crouse8f29e652005-12-15 02:17:46 +0100206 au_writel(mem_sttime,MEM_STTIME2);
207 au_writel(mem_stcfg,MEM_STCFG2);
Pete Popov26a940e2005-09-15 08:03:12 +0000208}
209
210/*
211 * Multi-Word DMA + DbDMA functions
212 */
Pete Popov26a940e2005-09-15 08:03:12 +0000213
Jordan Crouse8f29e652005-12-15 02:17:46 +0100214#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100215static int auide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
Pete Popov26a940e2005-09-15 08:03:12 +0000216{
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100217 ide_hwif_t *hwif = drive->hwif;
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200218 _auide_hwif *ahwif = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100219 struct scatterlist *sg;
Bartlomiej Zolnierkiewicz229816942009-03-27 12:46:46 +0100220 int i = cmd->sg_nents, count = 0;
221 int iswrite = !!(cmd->tf_flags & IDE_TFLAG_WRITE);
Pete Popov26a940e2005-09-15 08:03:12 +0000222
Jordan Crouse8f29e652005-12-15 02:17:46 +0100223 /* Save for interrupt context */
224 ahwif->drive = drive;
Pete Popov26a940e2005-09-15 08:03:12 +0000225
Jordan Crouse8f29e652005-12-15 02:17:46 +0100226 /* fill the descriptors */
227 sg = hwif->sg_table;
228 while (i && sg_dma_len(sg)) {
229 u32 cur_addr;
230 u32 cur_len;
Pete Popov26a940e2005-09-15 08:03:12 +0000231
Jordan Crouse8f29e652005-12-15 02:17:46 +0100232 cur_addr = sg_dma_address(sg);
233 cur_len = sg_dma_len(sg);
Pete Popov26a940e2005-09-15 08:03:12 +0000234
Jordan Crouse8f29e652005-12-15 02:17:46 +0100235 while (cur_len) {
236 u32 flags = DDMA_FLAGS_NOIE;
237 unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
Pete Popov26a940e2005-09-15 08:03:12 +0000238
Jordan Crouse8f29e652005-12-15 02:17:46 +0100239 if (++count >= PRD_ENTRIES) {
240 printk(KERN_WARNING "%s: DMA table too small\n",
241 drive->name);
Bartlomiej Zolnierkiewicz11998b32009-03-31 20:15:21 +0200242 return 0;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100243 }
Pete Popov26a940e2005-09-15 08:03:12 +0000244
Jordan Crouse8f29e652005-12-15 02:17:46 +0100245 /* Lets enable intr for the last descriptor only */
246 if (1==i)
247 flags = DDMA_FLAGS_IE;
248 else
249 flags = DDMA_FLAGS_NOIE;
Pete Popov26a940e2005-09-15 08:03:12 +0000250
Jordan Crouse8f29e652005-12-15 02:17:46 +0100251 if (iswrite) {
Manuel Laussea071cc2009-10-13 20:22:34 +0200252 if (!au1xxx_dbdma_put_source(ahwif->tx_chan,
Manuel Lauss963accb2009-10-13 20:22:35 +0200253 sg_phys(sg), tc, flags)) {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100254 printk(KERN_ERR "%s failed %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200255 __func__, __LINE__);
Pete Popov26a940e2005-09-15 08:03:12 +0000256 }
Manuel Laussea071cc2009-10-13 20:22:34 +0200257 } else {
258 if (!au1xxx_dbdma_put_dest(ahwif->rx_chan,
Manuel Lauss963accb2009-10-13 20:22:35 +0200259 sg_phys(sg), tc, flags)) {
Jordan Crouse8f29e652005-12-15 02:17:46 +0100260 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) {
Joe Perchesb1681c52010-02-03 18:44:44 -0800303 printk(KERN_WARNING "%s: timeout waiting for ddma to complete\n",
304 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
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200324static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize,
325 u32 devwidth, u32 flags, u32 regbase)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100326{
327 dev->dev_id = dev_id;
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200328 dev->dev_physaddr = CPHYSADDR(regbase);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100329 dev->dev_intlevel = 0;
330 dev->dev_intpolarity = 0;
331 dev->dev_tsize = tsize;
332 dev->dev_devwidth = devwidth;
333 dev->dev_flags = flags;
334}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100335
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200336#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
Bartlomiej Zolnierkiewiczf37afda2008-04-26 22:25:24 +0200337static const struct ide_dma_ops au1xxx_dma_ops = {
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200338 .dma_host_set = auide_dma_host_set,
339 .dma_setup = auide_dma_setup,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200340 .dma_start = auide_dma_start,
341 .dma_end = auide_dma_end,
342 .dma_test_irq = auide_dma_test_irq,
Bartlomiej Zolnierkiewiczde23ec92008-10-13 21:39:46 +0200343 .dma_lost_irq = ide_dma_lost_irq,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200344};
345
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200346static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
347{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200348 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100349 dbdev_tab_t source_dev_tab, target_dev_tab;
350 u32 dev_id, tsize, devwidth, flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000351
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200352 dev_id = hwif->ddma_id;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100353
Bartlomiej Zolnierkiewiczf629b382008-04-26 22:25:22 +0200354 tsize = 8; /* 1 */
355 devwidth = 32; /* 16 */
Jordan Crouse8f29e652005-12-15 02:17:46 +0100356
357#ifdef IDE_AU1XXX_BURSTMODE
358 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
359#else
360 flags = DEV_FLAGS_SYNC;
361#endif
362
363 /* setup dev_tab for tx channel */
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200364 auide_init_dbdma_dev(&source_dev_tab, dev_id, tsize, devwidth,
365 DEV_FLAGS_OUT | flags, auide->regbase);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100366 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
367
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200368 auide_init_dbdma_dev(&source_dev_tab, dev_id, tsize, devwidth,
369 DEV_FLAGS_IN | flags, auide->regbase);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100370 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
371
372 /* We also need to add a target device for the DMA */
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200373 auide_init_dbdma_dev(&target_dev_tab, (u32)DSCR_CMD0_ALWAYS, tsize,
374 devwidth, DEV_FLAGS_ANYUSE, auide->regbase);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100375 auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab);
376
377 /* Get a channel for TX */
378 auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id,
379 auide->tx_dev_id,
380 auide_ddma_tx_callback,
381 (void*)auide);
382
383 /* Get a channel for RX */
384 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
385 auide->target_dev_id,
386 auide_ddma_rx_callback,
387 (void*)auide);
388
389 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
390 NUM_DESCRIPTORS);
391 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
392 NUM_DESCRIPTORS);
Bartlomiej Zolnierkiewicz2bbd57c2008-10-13 21:39:47 +0200393
394 /* FIXME: check return value */
395 (void)ide_allocate_dma_engine(hwif);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100396
397 au1xxx_dbdma_start( auide->tx_chan );
398 au1xxx_dbdma_start( auide->rx_chan );
399
400 return 0;
401}
402#else
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200403static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
Pete Popov26a940e2005-09-15 08:03:12 +0000404{
Bartlomiej Zolnierkiewicza536f322008-07-16 20:33:40 +0200405 _auide_hwif *auide = &auide_hwif;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100406 dbdev_tab_t source_dev_tab;
407 int flags;
Pete Popov26a940e2005-09-15 08:03:12 +0000408
Jordan Crouse8f29e652005-12-15 02:17:46 +0100409#ifdef IDE_AU1XXX_BURSTMODE
410 flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
Pete Popov26a940e2005-09-15 08:03:12 +0000411#else
Jordan Crouse8f29e652005-12-15 02:17:46 +0100412 flags = DEV_FLAGS_SYNC;
Pete Popov26a940e2005-09-15 08:03:12 +0000413#endif
414
Jordan Crouse8f29e652005-12-15 02:17:46 +0100415 /* setup dev_tab for tx channel */
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200416 auide_init_dbdma_dev(&source_dev_tab, (u32)DSCR_CMD0_ALWAYS, 8, 32,
417 DEV_FLAGS_OUT | flags, auide->regbase);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100418 auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
Pete Popov26a940e2005-09-15 08:03:12 +0000419
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200420 auide_init_dbdma_dev(&source_dev_tab, (u32)DSCR_CMD0_ALWAYS, 8, 32,
421 DEV_FLAGS_IN | flags, auide->regbase);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100422 auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
423
424 /* Get a channel for TX */
425 auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS,
426 auide->tx_dev_id,
427 NULL,
428 (void*)auide);
429
430 /* Get a channel for RX */
431 auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
432 DSCR_CMD0_ALWAYS,
433 NULL,
434 (void*)auide);
435
436 auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
437 NUM_DESCRIPTORS);
438 auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
439 NUM_DESCRIPTORS);
440
441 au1xxx_dbdma_start( auide->tx_chan );
442 au1xxx_dbdma_start( auide->rx_chan );
443
444 return 0;
Pete Popov26a940e2005-09-15 08:03:12 +0000445}
Jordan Crouse8f29e652005-12-15 02:17:46 +0100446#endif
Pete Popov26a940e2005-09-15 08:03:12 +0000447
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200448static void auide_setup_ports(struct ide_hw *hw, _auide_hwif *ahwif)
Pete Popov26a940e2005-09-15 08:03:12 +0000449{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100450 int i;
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200451 unsigned long *ata_regs = hw->io_ports_array;
Pete Popov26a940e2005-09-15 08:03:12 +0000452
Jordan Crouse8f29e652005-12-15 02:17:46 +0100453 /* FIXME? */
Bartlomiej Zolnierkiewicz4c3032d2008-04-27 15:38:32 +0200454 for (i = 0; i < 8; i++)
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400455 *ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000456
Jordan Crouse8f29e652005-12-15 02:17:46 +0100457 /* set the Alternative Status register */
Sergei Shtylyovfcbd3b42008-04-28 19:54:38 +0400458 *ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT);
Pete Popov26a940e2005-09-15 08:03:12 +0000459}
460
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200461#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
462static const struct ide_tp_ops au1xxx_tp_ops = {
463 .exec_command = ide_exec_command,
464 .read_status = ide_read_status,
465 .read_altstatus = ide_read_altstatus,
Sergei Shtylyovecf3a312009-03-31 20:15:30 +0200466 .write_devctl = ide_write_devctl,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200467
Sergei Shtylyovabb596b2009-03-31 20:15:32 +0200468 .dev_select = ide_dev_select,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200469 .tf_load = ide_tf_load,
470 .tf_read = ide_tf_read,
471
472 .input_data = au1xxx_input_data,
473 .output_data = au1xxx_output_data,
474};
475#endif
476
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200477static const struct ide_port_ops au1xxx_port_ops = {
478 .set_pio_mode = au1xxx_set_pio_mode,
479 .set_dma_mode = auide_set_dma_mode,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200480};
481
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100482static const struct ide_port_info au1xxx_port_info = {
Bartlomiej Zolnierkiewicz85528652008-04-26 22:25:23 +0200483 .init_dma = auide_ddma_init,
Bartlomiej Zolnierkiewicz374e0422008-07-23 19:55:56 +0200484#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
485 .tp_ops = &au1xxx_tp_ops,
486#endif
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200487 .port_ops = &au1xxx_port_ops,
Bartlomiej Zolnierkiewicz5e37bdc2008-04-26 22:25:24 +0200488#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
489 .dma_ops = &au1xxx_dma_ops,
490#endif
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100491 .host_flags = IDE_HFLAG_POST_SET_MODE |
Bartlomiej Zolnierkiewicz807b90d2008-02-02 19:56:40 +0100492 IDE_HFLAG_NO_IO_32BIT |
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100493 IDE_HFLAG_UNMASK_IRQS,
494 .pio_mask = ATA_PIO4,
495#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
496 .mwdma_mask = ATA_MWDMA2,
497#endif
Bartlomiej Zolnierkiewicz29e52cf2009-05-17 19:12:22 +0200498 .chipset = ide_au1xxx,
Bartlomiej Zolnierkiewiczc413b9b2008-02-02 19:56:31 +0100499};
500
Ming Lei7a192ec2009-02-06 23:40:12 +0800501static int au_ide_probe(struct platform_device *dev)
Pete Popov26a940e2005-09-15 08:03:12 +0000502{
Jordan Crouse8f29e652005-12-15 02:17:46 +0100503 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000504 struct resource *res;
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200505 struct ide_host *host;
Pete Popov26a940e2005-09-15 08:03:12 +0000506 int ret = 0;
Bartlomiej Zolnierkiewicz9f36d312009-05-17 19:12:25 +0200507 struct ide_hw hw, *hws[] = { &hw };
Pete Popov26a940e2005-09-15 08:03:12 +0000508
509#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100510 char *mode = "MWDMA2";
Pete Popov26a940e2005-09-15 08:03:12 +0000511#elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
Jordan Crouse8f29e652005-12-15 02:17:46 +0100512 char *mode = "PIO+DDMA(offload)";
Pete Popov26a940e2005-09-15 08:03:12 +0000513#endif
514
Jordan Crouse8f29e652005-12-15 02:17:46 +0100515 memset(&auide_hwif, 0, sizeof(_auide_hwif));
Ming Lei7a192ec2009-02-06 23:40:12 +0800516 ahwif->irq = platform_get_irq(dev, 0);
Pete Popov26a940e2005-09-15 08:03:12 +0000517
Ming Lei7a192ec2009-02-06 23:40:12 +0800518 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
Pete Popov26a940e2005-09-15 08:03:12 +0000519
520 if (res == NULL) {
Ming Lei7a192ec2009-02-06 23:40:12 +0800521 pr_debug("%s %d: no base address\n", DRV_NAME, dev->id);
Pete Popov26a940e2005-09-15 08:03:12 +0000522 ret = -ENODEV;
523 goto out;
524 }
David Vrabel48944732006-01-19 17:56:29 +0000525 if (ahwif->irq < 0) {
Ming Lei7a192ec2009-02-06 23:40:12 +0800526 pr_debug("%s %d: no IRQ\n", DRV_NAME, dev->id);
David Vrabel48944732006-01-19 17:56:29 +0000527 ret = -ENODEV;
528 goto out;
529 }
Pete Popov26a940e2005-09-15 08:03:12 +0000530
H Hartley Sweeten4b7c7232009-11-23 10:27:22 -0800531 if (!request_mem_region(res->start, resource_size(res), dev->name)) {
Pete Popov26a940e2005-09-15 08:03:12 +0000532 pr_debug("%s: request_mem_region failed\n", DRV_NAME);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100533 ret = -EBUSY;
Pete Popov26a940e2005-09-15 08:03:12 +0000534 goto out;
Jordan Crouse8f29e652005-12-15 02:17:46 +0100535 }
Pete Popov26a940e2005-09-15 08:03:12 +0000536
H Hartley Sweeten4b7c7232009-11-23 10:27:22 -0800537 ahwif->regbase = (u32)ioremap(res->start, resource_size(res));
Pete Popov26a940e2005-09-15 08:03:12 +0000538 if (ahwif->regbase == 0) {
539 ret = -ENOMEM;
540 goto out;
541 }
542
Manuel Laussd4f07ae2011-08-18 11:11:58 +0200543 res = platform_get_resource(dev, IORESOURCE_DMA, 0);
544 if (!res) {
545 pr_debug("%s: no DDMA ID resource\n", DRV_NAME);
546 ret = -ENODEV;
547 goto out;
548 }
549 ahwif->ddma_id = res->start;
550
Bartlomiej Zolnierkiewicz9239b332007-10-20 00:32:33 +0200551 memset(&hw, 0, sizeof(hw));
552 auide_setup_ports(&hw, ahwif);
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100553 hw.irq = ahwif->irq;
Ming Lei7a192ec2009-02-06 23:40:12 +0800554 hw.dev = &dev->dev;
Bartlomiej Zolnierkiewiczaa79a2f2008-01-26 20:13:08 +0100555
Bartlomiej Zolnierkiewiczdca39832009-05-17 19:12:24 +0200556 ret = ide_host_add(&au1xxx_port_info, hws, 1, &host);
Bartlomiej Zolnierkiewicz6f904d02008-07-23 19:55:57 +0200557 if (ret)
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200558 goto out;
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200559
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200560 auide_hwif.hwif = host->ports[0];
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200561
Ming Lei7a192ec2009-02-06 23:40:12 +0800562 platform_set_drvdata(dev, host);
Pete Popov26a940e2005-09-15 08:03:12 +0000563
Jordan Crouse8f29e652005-12-15 02:17:46 +0100564 printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
Pete Popov26a940e2005-09-15 08:03:12 +0000565
Jordan Crouse8f29e652005-12-15 02:17:46 +0100566 out:
567 return ret;
Pete Popov26a940e2005-09-15 08:03:12 +0000568}
569
Ming Lei7a192ec2009-02-06 23:40:12 +0800570static int au_ide_remove(struct platform_device *dev)
Pete Popov26a940e2005-09-15 08:03:12 +0000571{
Pete Popov26a940e2005-09-15 08:03:12 +0000572 struct resource *res;
Ming Lei7a192ec2009-02-06 23:40:12 +0800573 struct ide_host *host = platform_get_drvdata(dev);
Jordan Crouse8f29e652005-12-15 02:17:46 +0100574 _auide_hwif *ahwif = &auide_hwif;
Pete Popov26a940e2005-09-15 08:03:12 +0000575
Bartlomiej Zolnierkiewicz48c3c102008-07-23 19:55:57 +0200576 ide_host_remove(host);
Pete Popov26a940e2005-09-15 08:03:12 +0000577
578 iounmap((void *)ahwif->regbase);
579
Ming Lei7a192ec2009-02-06 23:40:12 +0800580 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
H Hartley Sweeten4b7c7232009-11-23 10:27:22 -0800581 release_mem_region(res->start, resource_size(res));
Pete Popov26a940e2005-09-15 08:03:12 +0000582
583 return 0;
584}
585
Ming Lei7a192ec2009-02-06 23:40:12 +0800586static struct platform_driver au1200_ide_driver = {
587 .driver = {
588 .name = "au1200-ide",
589 .owner = THIS_MODULE,
590 },
Pete Popov26a940e2005-09-15 08:03:12 +0000591 .probe = au_ide_probe,
592 .remove = au_ide_remove,
593};
594
595static int __init au_ide_init(void)
596{
Ming Lei7a192ec2009-02-06 23:40:12 +0800597 return platform_driver_register(&au1200_ide_driver);
Pete Popov26a940e2005-09-15 08:03:12 +0000598}
599
Jordan Crouse8f29e652005-12-15 02:17:46 +0100600static void __exit au_ide_exit(void)
Pete Popov26a940e2005-09-15 08:03:12 +0000601{
Ming Lei7a192ec2009-02-06 23:40:12 +0800602 platform_driver_unregister(&au1200_ide_driver);
Pete Popov26a940e2005-09-15 08:03:12 +0000603}
604
Pete Popov26a940e2005-09-15 08:03:12 +0000605MODULE_LICENSE("GPL");
606MODULE_DESCRIPTION("AU1200 IDE driver");
607
608module_init(au_ide_init);
609module_exit(au_ide_exit);