linux/drivers/ide/au1xxx-ide.c

643 lines
16 KiB
C
Raw Normal View History

/*
* BRIEF MODULE DESCRIPTION
* AMD Alchemy Au1xxx IDE interface routines over the Static Bus
*
* Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE
* Interface and Linux Device Driver" Application Note.
*/
#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/ide.h>
#include <linux/scatterlist.h>
#include <asm/mach-au1x00/au1xxx.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1xxx_ide.h>
#define DRV_NAME "au1200-ide"
#define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>"
/* enable the burstmode in the dbdma */
#define IDE_AU1XXX_BURSTMODE 1
static _auide_hwif auide_hwif;
#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
void auide_insw(unsigned long port, void *addr, u32 count)
{
_auide_hwif *ahwif = &auide_hwif;
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1,
DDMA_FLAGS_NOIE)) {
printk(KERN_ERR "%s failed %d\n", __func__, __LINE__);
return;
}
ctp = *((chan_tab_t **)ahwif->rx_chan);
dp = ctp->cur_ptr;
while (dp->dscr_cmd0 & DSCR_CMD0_V)
;
ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp);
}
void auide_outsw(unsigned long port, void *addr, u32 count)
{
_auide_hwif *ahwif = &auide_hwif;
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
if(!put_source_flags(ahwif->tx_chan, (void*)addr,
count << 1, DDMA_FLAGS_NOIE)) {
printk(KERN_ERR "%s failed %d\n", __func__, __LINE__);
return;
}
ctp = *((chan_tab_t **)ahwif->tx_chan);
dp = ctp->cur_ptr;
while (dp->dscr_cmd0 & DSCR_CMD0_V)
;
ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp);
}
static void au1xxx_input_data(ide_drive_t *drive, struct request *rq,
void *buf, unsigned int len)
{
auide_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
}
static void au1xxx_output_data(ide_drive_t *drive, struct request *rq,
void *buf, unsigned int len)
{
auide_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2);
}
#endif
static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
ide: move ide_config_drive_speed() calls to upper layers (take 2) * Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16. * Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program the host for the transfer mode after programming the device. Set it in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac and via82cxxx host drivers. * Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely skip programming of host/device for the transfer mode ("smart" hosts). Set it in it821x host driver and check it in ide_tune_dma(). * Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all direct ->set_pio_mode/->speedproc users to use these helpers. * Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc methods to callers. * Rename ->speedproc method to ->set_dma_mode, make it void and update all implementations accordingly. * Update ide_set_xfer_rate() comments. * Unexport ide_config_drive_speed(). v2: * Fix issues noticed by Sergei: - export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt to setting DMA modes from sc1200_set_pio_mode() to do_special() - check IDE_HFLAG_NO_SET_MODE in ide_tune_dma() - check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode() - check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode() - return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL - don't set ->set_{pio,dma}_mode on it821x in "smart" mode - fix build problem in pmac.c - minor fixes in au1xxx-ide.c/cs5530.c/siimage.c - improve patch description Changes in behavior caused by this patch: - HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change PIO mode if it821x controller is in "smart" mode - removal of two debugging printk-s (from cs5530.c and sc1200.c) - transfer modes 0x00-0x07 passed from user space may be programmed twice on the device (not really an issue since 0x00 is not supported correctly by any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-13 15:47:51 +00:00
int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
/* set pio mode! */
switch(pio) {
case 0:
mem_sttime = SBC_IDE_TIMING(PIO0);
/* set configuration for RCS2# */
mem_stcfg |= TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS;
break;
case 1:
mem_sttime = SBC_IDE_TIMING(PIO1);
/* set configuration for RCS2# */
mem_stcfg |= TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS;
break;
case 2:
mem_sttime = SBC_IDE_TIMING(PIO2);
/* set configuration for RCS2# */
mem_stcfg &= ~TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS;
break;
case 3:
mem_sttime = SBC_IDE_TIMING(PIO3);
/* set configuration for RCS2# */
mem_stcfg &= ~TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS;
break;
case 4:
mem_sttime = SBC_IDE_TIMING(PIO4);
/* set configuration for RCS2# */
mem_stcfg &= ~TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS;
break;
}
au_writel(mem_sttime,MEM_STTIME2);
au_writel(mem_stcfg,MEM_STCFG2);
}
ide: move ide_config_drive_speed() calls to upper layers (take 2) * Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16. * Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program the host for the transfer mode after programming the device. Set it in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac and via82cxxx host drivers. * Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely skip programming of host/device for the transfer mode ("smart" hosts). Set it in it821x host driver and check it in ide_tune_dma(). * Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all direct ->set_pio_mode/->speedproc users to use these helpers. * Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc methods to callers. * Rename ->speedproc method to ->set_dma_mode, make it void and update all implementations accordingly. * Update ide_set_xfer_rate() comments. * Unexport ide_config_drive_speed(). v2: * Fix issues noticed by Sergei: - export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt to setting DMA modes from sc1200_set_pio_mode() to do_special() - check IDE_HFLAG_NO_SET_MODE in ide_tune_dma() - check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode() - check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode() - return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL - don't set ->set_{pio,dma}_mode on it821x in "smart" mode - fix build problem in pmac.c - minor fixes in au1xxx-ide.c/cs5530.c/siimage.c - improve patch description Changes in behavior caused by this patch: - HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change PIO mode if it821x controller is in "smart" mode - removal of two debugging printk-s (from cs5530.c and sc1200.c) - transfer modes 0x00-0x07 passed from user space may be programmed twice on the device (not really an issue since 0x00 is not supported correctly by any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-13 15:47:51 +00:00
static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed)
{
ide: move ide_config_drive_speed() calls to upper layers (take 2) * Convert {ide_hwif_t,ide_pci_device_t}->host_flag to be u16. * Add IDE_HFLAG_POST_SET_MODE host flag to indicate the need to program the host for the transfer mode after programming the device. Set it in au1xxx-ide, amd74xx, cs5530, cs5535, pdc202xx_new, sc1200, pmac and via82cxxx host drivers. * Add IDE_HFLAG_NO_SET_MODE host flag to indicate the need to completely skip programming of host/device for the transfer mode ("smart" hosts). Set it in it821x host driver and check it in ide_tune_dma(). * Add ide_set_pio_mode()/ide_set_dma_mode() helpers and convert all direct ->set_pio_mode/->speedproc users to use these helpers. * Move ide_config_drive_speed() calls from ->set_pio_mode/->speedproc methods to callers. * Rename ->speedproc method to ->set_dma_mode, make it void and update all implementations accordingly. * Update ide_set_xfer_rate() comments. * Unexport ide_config_drive_speed(). v2: * Fix issues noticed by Sergei: - export ide_set_dma_mode() instead of moving ->set_pio_mode abuse wrt to setting DMA modes from sc1200_set_pio_mode() to do_special() - check IDE_HFLAG_NO_SET_MODE in ide_tune_dma() - check for (hwif->set_pio_mode) == NULL in ide_set_pio_mode() - check for (hwif->set_dma_mode) == NULL in ide_set_dma_mode() - return -1 from ide_set_{pio,dma}_mode() if ->set_{pio,dma}_mode == NULL - don't set ->set_{pio,dma}_mode on it821x in "smart" mode - fix build problem in pmac.c - minor fixes in au1xxx-ide.c/cs5530.c/siimage.c - improve patch description Changes in behavior caused by this patch: - HDIO_SET_PIO_MODE ioctl would now return -ENOSYS for attempts to change PIO mode if it821x controller is in "smart" mode - removal of two debugging printk-s (from cs5530.c and sc1200.c) - transfer modes 0x00-0x07 passed from user space may be programmed twice on the device (not really an issue since 0x00 is not supported correctly by any host driver ATM, 0x01 is not supported at all and 0x02-0x07 are invalid) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-13 15:47:51 +00:00
int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
switch(speed) {
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
case XFER_MW_DMA_2:
mem_sttime = SBC_IDE_TIMING(MDMA2);
/* set configuration for RCS2# */
mem_stcfg &= ~TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS;
break;
case XFER_MW_DMA_1:
mem_sttime = SBC_IDE_TIMING(MDMA1);
/* set configuration for RCS2# */
mem_stcfg &= ~TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS;
break;
case XFER_MW_DMA_0:
mem_sttime = SBC_IDE_TIMING(MDMA0);
/* set configuration for RCS2# */
mem_stcfg |= TS_MASK;
mem_stcfg &= ~TCSOE_MASK;
mem_stcfg &= ~TOECS_MASK;
mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS;
break;
#endif
}
au_writel(mem_sttime,MEM_STTIME2);
au_writel(mem_stcfg,MEM_STCFG2);
}
/*
* Multi-Word DMA + DbDMA functions
*/
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
static int auide_build_dmatable(ide_drive_t *drive)
{
int i, iswrite, count = 0;
ide_hwif_t *hwif = HWIF(drive);
struct request *rq = HWGROUP(drive)->rq;
_auide_hwif *ahwif = &auide_hwif;
struct scatterlist *sg;
iswrite = (rq_data_dir(rq) == WRITE);
/* Save for interrupt context */
ahwif->drive = drive;
hwif->sg_nents = i = ide_build_sglist(drive, rq);
if (!i)
return 0;
/* fill the descriptors */
sg = hwif->sg_table;
while (i && sg_dma_len(sg)) {
u32 cur_addr;
u32 cur_len;
cur_addr = sg_dma_address(sg);
cur_len = sg_dma_len(sg);
while (cur_len) {
u32 flags = DDMA_FLAGS_NOIE;
unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00;
if (++count >= PRD_ENTRIES) {
printk(KERN_WARNING "%s: DMA table too small\n",
drive->name);
goto use_pio_instead;
}
/* Lets enable intr for the last descriptor only */
if (1==i)
flags = DDMA_FLAGS_IE;
else
flags = DDMA_FLAGS_NOIE;
if (iswrite) {
if(!put_source_flags(ahwif->tx_chan,
(void*) sg_virt(sg),
tc, flags)) {
printk(KERN_ERR "%s failed %d\n",
__func__, __LINE__);
}
} else
{
if(!put_dest_flags(ahwif->rx_chan,
(void*) sg_virt(sg),
tc, flags)) {
printk(KERN_ERR "%s failed %d\n",
__func__, __LINE__);
}
}
cur_addr += tc;
cur_len -= tc;
}
sg = sg_next(sg);
i--;
}
if (count)
return 1;
use_pio_instead:
ide_destroy_dmatable(drive);
return 0; /* revert to PIO for this request */
}
static int auide_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
if (hwif->sg_nents) {
ide_destroy_dmatable(drive);
hwif->sg_nents = 0;
}
return 0;
}
static void auide_dma_start(ide_drive_t *drive )
{
}
static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command)
{
/* issue cmd to drive */
ide_execute_command(drive, command, &ide_dma_intr,
(2*WAIT_CMD), NULL);
}
static int auide_dma_setup(ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
if (!auide_build_dmatable(drive)) {
ide_map_sg(drive, rq);
return 1;
}
drive->waiting_for_dma = 1;
return 0;
}
static int auide_dma_test_irq(ide_drive_t *drive)
{
/* If dbdma didn't execute the STOP command yet, the
* active bit is still set
*/
drive->waiting_for_dma++;
if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) {
printk(KERN_WARNING "%s: timeout waiting for ddma to \
complete\n", drive->name);
return 1;
}
udelay(10);
return 0;
}
static void auide_dma_host_set(ide_drive_t *drive, int on)
{
}
static void auide_ddma_tx_callback(int irq, void *param)
{
_auide_hwif *ahwif = (_auide_hwif*)param;
ahwif->drive->waiting_for_dma = 0;
}
static void auide_ddma_rx_callback(int irq, void *param)
{
_auide_hwif *ahwif = (_auide_hwif*)param;
ahwif->drive->waiting_for_dma = 0;
}
#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags)
{
dev->dev_id = dev_id;
dev->dev_physaddr = (u32)IDE_PHYS_ADDR;
dev->dev_intlevel = 0;
dev->dev_intpolarity = 0;
dev->dev_tsize = tsize;
dev->dev_devwidth = devwidth;
dev->dev_flags = flags;
}
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
static const struct ide_dma_ops au1xxx_dma_ops = {
.dma_host_set = auide_dma_host_set,
.dma_setup = auide_dma_setup,
.dma_exec_cmd = auide_dma_exec_cmd,
.dma_start = auide_dma_start,
.dma_end = auide_dma_end,
.dma_test_irq = auide_dma_test_irq,
.dma_lost_irq = ide_dma_lost_irq,
.dma_timeout = ide_dma_timeout,
};
static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
{
_auide_hwif *auide = &auide_hwif;
dbdev_tab_t source_dev_tab, target_dev_tab;
u32 dev_id, tsize, devwidth, flags;
dev_id = IDE_DDMA_REQ;
tsize = 8; /* 1 */
devwidth = 32; /* 16 */
#ifdef IDE_AU1XXX_BURSTMODE
flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
#else
flags = DEV_FLAGS_SYNC;
#endif
/* setup dev_tab for tx channel */
auide_init_dbdma_dev( &source_dev_tab,
dev_id,
tsize, devwidth, DEV_FLAGS_OUT | flags);
auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
auide_init_dbdma_dev( &source_dev_tab,
dev_id,
tsize, devwidth, DEV_FLAGS_IN | flags);
auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
/* We also need to add a target device for the DMA */
auide_init_dbdma_dev( &target_dev_tab,
(u32)DSCR_CMD0_ALWAYS,
tsize, devwidth, DEV_FLAGS_ANYUSE);
auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab);
/* Get a channel for TX */
auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id,
auide->tx_dev_id,
auide_ddma_tx_callback,
(void*)auide);
/* Get a channel for RX */
auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
auide->target_dev_id,
auide_ddma_rx_callback,
(void*)auide);
auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
NUM_DESCRIPTORS);
auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
NUM_DESCRIPTORS);
/* FIXME: check return value */
(void)ide_allocate_dma_engine(hwif);
au1xxx_dbdma_start( auide->tx_chan );
au1xxx_dbdma_start( auide->rx_chan );
return 0;
}
#else
static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d)
{
_auide_hwif *auide = &auide_hwif;
dbdev_tab_t source_dev_tab;
int flags;
#ifdef IDE_AU1XXX_BURSTMODE
flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE;
#else
flags = DEV_FLAGS_SYNC;
#endif
/* setup dev_tab for tx channel */
auide_init_dbdma_dev( &source_dev_tab,
(u32)DSCR_CMD0_ALWAYS,
8, 32, DEV_FLAGS_OUT | flags);
auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
auide_init_dbdma_dev( &source_dev_tab,
(u32)DSCR_CMD0_ALWAYS,
8, 32, DEV_FLAGS_IN | flags);
auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab );
/* Get a channel for TX */
auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS,
auide->tx_dev_id,
NULL,
(void*)auide);
/* Get a channel for RX */
auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id,
DSCR_CMD0_ALWAYS,
NULL,
(void*)auide);
auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan,
NUM_DESCRIPTORS);
auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan,
NUM_DESCRIPTORS);
au1xxx_dbdma_start( auide->tx_chan );
au1xxx_dbdma_start( auide->rx_chan );
return 0;
}
#endif
static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif)
{
int i;
unsigned long *ata_regs = hw->io_ports_array;
/* FIXME? */
for (i = 0; i < 8; i++)
*ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT);
/* set the Alternative Status register */
*ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT);
}
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
static const struct ide_tp_ops au1xxx_tp_ops = {
.exec_command = ide_exec_command,
.read_status = ide_read_status,
.read_altstatus = ide_read_altstatus,
.read_sff_dma_status = ide_read_sff_dma_status,
.set_irq = ide_set_irq,
.tf_load = ide_tf_load,
.tf_read = ide_tf_read,
.input_data = au1xxx_input_data,
.output_data = au1xxx_output_data,
};
#endif
static const struct ide_port_ops au1xxx_port_ops = {
.set_pio_mode = au1xxx_set_pio_mode,
.set_dma_mode = auide_set_dma_mode,
};
static const struct ide_port_info au1xxx_port_info = {
.init_dma = auide_ddma_init,
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA
.tp_ops = &au1xxx_tp_ops,
#endif
.port_ops = &au1xxx_port_ops,
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
.dma_ops = &au1xxx_dma_ops,
#endif
.host_flags = IDE_HFLAG_POST_SET_MODE |
IDE_HFLAG_NO_IO_32BIT |
IDE_HFLAG_UNMASK_IRQS,
.pio_mask = ATA_PIO4,
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
.mwdma_mask = ATA_MWDMA2,
#endif
};
static int au_ide_probe(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
_auide_hwif *ahwif = &auide_hwif;
struct resource *res;
struct ide_host *host;
int ret = 0;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
char *mode = "MWDMA2";
#elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA)
char *mode = "PIO+DDMA(offload)";
#endif
memset(&auide_hwif, 0, sizeof(_auide_hwif));
ahwif->irq = platform_get_irq(pdev, 0);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id);
ret = -ENODEV;
goto out;
}
if (ahwif->irq < 0) {
pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id);
ret = -ENODEV;
goto out;
}
if (!request_mem_region(res->start, res->end - res->start + 1,
pdev->name)) {
pr_debug("%s: request_mem_region failed\n", DRV_NAME);
ret = -EBUSY;
goto out;
}
ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1);
if (ahwif->regbase == 0) {
ret = -ENOMEM;
goto out;
}
memset(&hw, 0, sizeof(hw));
auide_setup_ports(&hw, ahwif);
hw.irq = ahwif->irq;
hw.dev = dev;
hw.chipset = ide_au1xxx;
ret = ide_host_add(&au1xxx_port_info, hws, &host);
if (ret)
goto out;
auide_hwif.hwif = host->ports[0];
dev_set_drvdata(dev, host);
printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
out:
return ret;
}
static int au_ide_remove(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct resource *res;
struct ide_host *host = dev_get_drvdata(dev);
_auide_hwif *ahwif = &auide_hwif;
ide_host_remove(host);
iounmap((void *)ahwif->regbase);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, res->end - res->start + 1);
return 0;
}
static struct device_driver au1200_ide_driver = {
.name = "au1200-ide",
.bus = &platform_bus_type,
.probe = au_ide_probe,
.remove = au_ide_remove,
};
static int __init au_ide_init(void)
{
return driver_register(&au1200_ide_driver);
}
static void __exit au_ide_exit(void)
{
driver_unregister(&au1200_ide_driver);
}
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("AU1200 IDE driver");
module_init(au_ide_init);
module_exit(au_ide_exit);