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linux/include/asm-mips/mach-au1x00/au1xxx_ide.h
Pete Popov 26a940e217 Cleaned up AMD Au1200 IDE driver: 
- converted to platform bus
- removed pci dependencies
- removed virt_to_phys/phys_to_virt calls
    
System now can root off of a disk.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644
2005-10-29 19:32:20 +01:00

302 lines
12 KiB
C
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/*
* include/asm-mips/mach-au1x00/au1xxx_ide.h version 01.30.00 Aug. 02 2005
*
* 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/config.h>
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
#define DMA_WAIT_TIMEOUT 100
#define NUM_DESCRIPTORS PRD_ENTRIES
#else /* CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA */
#define NUM_DESCRIPTORS 2
#endif
#ifndef AU1XXX_ATA_RQSIZE
#define AU1XXX_ATA_RQSIZE 128
#endif
/* Disable Burstable-Support for DBDMA */
#ifndef CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON
#define CONFIG_BLK_DEV_IDE_AU1XXX_BURSTABLE_ON 0
#endif
#ifdef CONFIG_PM
/*
* This will enable the device to be powered up when write() or read()
* is called. If this is not defined, the driver will return -EBUSY.
*/
#define WAKE_ON_ACCESS 1
typedef struct
{
spinlock_t lock; /* Used to block on state transitions */
au1xxx_power_dev_t *dev; /* Power Managers device structure */
unsigned stopped; /* USed to signaling device is stopped */
} pm_state;
#endif
typedef struct
{
u32 tx_dev_id, rx_dev_id, target_dev_id;
u32 tx_chan, rx_chan;
void *tx_desc_head, *rx_desc_head;
ide_hwif_t *hwif;
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
ide_drive_t *drive;
u8 white_list, black_list;
struct dbdma_cmd *dma_table_cpu;
dma_addr_t dma_table_dma;
struct scatterlist *sg_table;
int sg_nents;
int sg_dma_direction;
#endif
struct device *dev;
int irq;
u32 regbase;
#ifdef CONFIG_PM
pm_state pm;
#endif
} _auide_hwif;
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
struct drive_list_entry {
const char * id_model;
const char * id_firmware;
};
/* HD white list */
static const struct drive_list_entry dma_white_list [] = {
/*
* Hitachi
*/
{ "HITACHI_DK14FA-20" , "ALL" },
{ "HTS726060M9AT00" , "ALL" },
/*
* Maxtor
*/
{ "Maxtor 6E040L0" , "ALL" },
{ "Maxtor 6Y080P0" , "ALL" },
{ "Maxtor 6Y160P0" , "ALL" },
/*
* Seagate
*/
{ "ST3120026A" , "ALL" },
{ "ST320014A" , "ALL" },
{ "ST94011A" , "ALL" },
{ "ST340016A" , "ALL" },
/*
* Western Digital
*/
{ "WDC WD400UE-00HCT0" , "ALL" },
{ "WDC WD400JB-00JJC0" , "ALL" },
{ NULL , NULL }
};
/* HD black list */
static const struct drive_list_entry dma_black_list [] = {
/*
* Western Digital
*/
{ "WDC WD100EB-00CGH0" , "ALL" },
{ "WDC WD200BB-00AUA1" , "ALL" },
{ "WDC AC24300L" , "ALL" },
{ NULL , NULL }
};
#endif
/* function prototyping */
u8 auide_inb(unsigned long port);
u16 auide_inw(unsigned long port);
u32 auide_inl(unsigned long port);
void auide_insw(unsigned long port, void *addr, u32 count);
void auide_insl(unsigned long port, void *addr, u32 count);
void auide_outb(u8 addr, unsigned long port);
void auide_outbsync(ide_drive_t *drive, u8 addr, unsigned long port);
void auide_outw(u16 addr, unsigned long port);
void auide_outl(u32 addr, unsigned long port);
void auide_outsw(unsigned long port, void *addr, u32 count);
void auide_outsl(unsigned long port, void *addr, u32 count);
static void auide_tune_drive(ide_drive_t *drive, byte pio);
static int auide_tune_chipset (ide_drive_t *drive, u8 speed);
static int auide_ddma_init( _auide_hwif *auide );
static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif);
int __init auide_probe(void);
#ifdef CONFIG_PM
int au1200ide_pm_callback( au1xxx_power_dev_t *dev,
au1xxx_request_t request, void *data);
static int au1xxxide_pm_standby( au1xxx_power_dev_t *dev );
static int au1xxxide_pm_sleep( au1xxx_power_dev_t *dev );
static int au1xxxide_pm_resume( au1xxx_power_dev_t *dev );
static int au1xxxide_pm_getstatus( au1xxx_power_dev_t *dev );
static int au1xxxide_pm_access( au1xxx_power_dev_t *dev );
static int au1xxxide_pm_idle( au1xxx_power_dev_t *dev );
static int au1xxxide_pm_cleanup( au1xxx_power_dev_t *dev );
#endif
/*
* Multi-Word DMA + DbDMA functions
*/
#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
static int in_drive_list(struct hd_driveid *id,
const struct drive_list_entry *drive_table);
static int auide_build_sglist(ide_drive_t *drive, struct request *rq);
static int auide_build_dmatable(ide_drive_t *drive);
static int auide_dma_end(ide_drive_t *drive);
static void auide_dma_start(ide_drive_t *drive );
ide_startstop_t auide_dma_intr (ide_drive_t *drive);
static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command);
static int auide_dma_setup(ide_drive_t *drive);
static int auide_dma_check(ide_drive_t *drive);
static int auide_dma_test_irq(ide_drive_t *drive);
static int auide_dma_host_off(ide_drive_t *drive);
static int auide_dma_host_on(ide_drive_t *drive);
static int auide_dma_lostirq(ide_drive_t *drive);
static int auide_dma_on(ide_drive_t *drive);
static void auide_ddma_tx_callback(int irq, void *param,
struct pt_regs *regs);
static void auide_ddma_rx_callback(int irq, void *param,
struct pt_regs *regs);
static int auide_dma_off_quietly(ide_drive_t *drive);
static int auide_dma_timeout(ide_drive_t *drive);
#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */
/*******************************************************************************
* PIO Mode timing calculation : *
* *
* Static Bus Spec ATA Spec *
* Tcsoe = t1 *
* Toecs = t9 *
* Twcs = t9 *
* Tcsh = t2i | t2 *
* Tcsoff = t2i | t2 *
* Twp = t2 *
* Tcsw = t1 *
* Tpm = 0 *
* Ta = t1+t2 *
*******************************************************************************/
#define TCSOE_MASK (0x07<<29)
#define TOECS_MASK (0x07<<26)
#define TWCS_MASK (0x07<<28)
#define TCSH_MASK (0x0F<<24)
#define TCSOFF_MASK (0x07<<20)
#define TWP_MASK (0x3F<<14)
#define TCSW_MASK (0x0F<<10)
#define TPM_MASK (0x0F<<6)
#define TA_MASK (0x3F<<0)
#define TS_MASK (1<<8)
/* Timing parameters PIO mode 0 */
#define SBC_IDE_PIO0_TCSOE (0x04<<29)
#define SBC_IDE_PIO0_TOECS (0x01<<26)
#define SBC_IDE_PIO0_TWCS (0x02<<28)
#define SBC_IDE_PIO0_TCSH (0x08<<24)
#define SBC_IDE_PIO0_TCSOFF (0x07<<20)
#define SBC_IDE_PIO0_TWP (0x10<<14)
#define SBC_IDE_PIO0_TCSW (0x04<<10)
#define SBC_IDE_PIO0_TPM (0x0<<6)
#define SBC_IDE_PIO0_TA (0x15<<0)
/* Timing parameters PIO mode 1 */
#define SBC_IDE_PIO1_TCSOE (0x03<<29)
#define SBC_IDE_PIO1_TOECS (0x01<<26)
#define SBC_IDE_PIO1_TWCS (0x01<<28)
#define SBC_IDE_PIO1_TCSH (0x06<<24)
#define SBC_IDE_PIO1_TCSOFF (0x06<<20)
#define SBC_IDE_PIO1_TWP (0x08<<14)
#define SBC_IDE_PIO1_TCSW (0x03<<10)
#define SBC_IDE_PIO1_TPM (0x00<<6)
#define SBC_IDE_PIO1_TA (0x0B<<0)
/* Timing parameters PIO mode 2 */
#define SBC_IDE_PIO2_TCSOE (0x05<<29)
#define SBC_IDE_PIO2_TOECS (0x01<<26)
#define SBC_IDE_PIO2_TWCS (0x01<<28)
#define SBC_IDE_PIO2_TCSH (0x07<<24)
#define SBC_IDE_PIO2_TCSOFF (0x07<<20)
#define SBC_IDE_PIO2_TWP (0x1F<<14)
#define SBC_IDE_PIO2_TCSW (0x05<<10)
#define SBC_IDE_PIO2_TPM (0x00<<6)
#define SBC_IDE_PIO2_TA (0x22<<0)
/* Timing parameters PIO mode 3 */
#define SBC_IDE_PIO3_TCSOE (0x05<<29)
#define SBC_IDE_PIO3_TOECS (0x01<<26)
#define SBC_IDE_PIO3_TWCS (0x01<<28)
#define SBC_IDE_PIO3_TCSH (0x0D<<24)
#define SBC_IDE_PIO3_TCSOFF (0x0D<<20)
#define SBC_IDE_PIO3_TWP (0x15<<14)
#define SBC_IDE_PIO3_TCSW (0x05<<10)
#define SBC_IDE_PIO3_TPM (0x00<<6)
#define SBC_IDE_PIO3_TA (0x1A<<0)
/* Timing parameters PIO mode 4 */
#define SBC_IDE_PIO4_TCSOE (0x04<<29)
#define SBC_IDE_PIO4_TOECS (0x01<<26)
#define SBC_IDE_PIO4_TWCS (0x01<<28)
#define SBC_IDE_PIO4_TCSH (0x04<<24)
#define SBC_IDE_PIO4_TCSOFF (0x04<<20)
#define SBC_IDE_PIO4_TWP (0x0D<<14)
#define SBC_IDE_PIO4_TCSW (0x03<<10)
#define SBC_IDE_PIO4_TPM (0x00<<6)
#define SBC_IDE_PIO4_TA (0x12<<0)
/* Timing parameters MDMA mode 0 */
#define SBC_IDE_MDMA0_TCSOE (0x03<<29)
#define SBC_IDE_MDMA0_TOECS (0x01<<26)
#define SBC_IDE_MDMA0_TWCS (0x01<<28)
#define SBC_IDE_MDMA0_TCSH (0x07<<24)
#define SBC_IDE_MDMA0_TCSOFF (0x07<<20)
#define SBC_IDE_MDMA0_TWP (0x0C<<14)
#define SBC_IDE_MDMA0_TCSW (0x03<<10)
#define SBC_IDE_MDMA0_TPM (0x00<<6)
#define SBC_IDE_MDMA0_TA (0x0F<<0)
/* Timing parameters MDMA mode 1 */
#define SBC_IDE_MDMA1_TCSOE (0x05<<29)
#define SBC_IDE_MDMA1_TOECS (0x01<<26)
#define SBC_IDE_MDMA1_TWCS (0x01<<28)
#define SBC_IDE_MDMA1_TCSH (0x05<<24)
#define SBC_IDE_MDMA1_TCSOFF (0x05<<20)
#define SBC_IDE_MDMA1_TWP (0x0F<<14)
#define SBC_IDE_MDMA1_TCSW (0x05<<10)
#define SBC_IDE_MDMA1_TPM (0x00<<6)
#define SBC_IDE_MDMA1_TA (0x15<<0)
/* Timing parameters MDMA mode 2 */
#define SBC_IDE_MDMA2_TCSOE (0x04<<29)
#define SBC_IDE_MDMA2_TOECS (0x01<<26)
#define SBC_IDE_MDMA2_TWCS (0x01<<28)
#define SBC_IDE_MDMA2_TCSH (0x04<<24)
#define SBC_IDE_MDMA2_TCSOFF (0x04<<20)
#define SBC_IDE_MDMA2_TWP (0x0D<<14)
#define SBC_IDE_MDMA2_TCSW (0x04<<10)
#define SBC_IDE_MDMA2_TPM (0x00<<6)
#define SBC_IDE_MDMA2_TA (0x12<<0)
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