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

3 files changed, 349 insertions, 0 deletions

diff --git a/include/asm-mips/mach-au1x00/au1xxx.h b/include/asm-mips/mach-au1x00/au1xxx.h
new file mode 100644
index 000000000000..b7b46dd9b929
--- /dev/null
+++ b/include/asm-mips/mach-au1x00/au1xxx.h
@@ -0,0 +1,44 @@
+/*
+ *  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.
+ */
+
+#ifndef _AU1XXX_H_
+#define _AU1XXX_H_
+
+#include <linux/config.h>
+
+#include <asm/mach-au1x00/au1000.h>
+
+#if defined(CONFIG_MIPS_DB1000) || defined(CONFIG_MIPS_DB1100) || defined(CONFIG_MIPS_DB1500) || defined(CONFIG_MIPS_DB1550)
+#include <asm/mach-db1x00/db1x00.h>
+
+#elif defined(CONFIG_MIPS_PB1550)
+#include <asm/mach-pb1x00/pb1550.h>
+
+#elif defined(CONFIG_MIPS_PB1200)
+#include <asm/mach-pb1x00/pb1200.h>
+
+#elif defined(CONFIG_MIPS_DB1200)
+#include <asm/mach-db1x00/db1200.h>
+
+#endif
+
+#endif /* _AU1XXX_H_ */
diff --git a/include/asm-mips/mach-au1x00/au1xxx_dbdma.h b/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
index ddbd9f5a2489..b327bcd3fee1 100644
--- a/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
+++ b/include/asm-mips/mach-au1x00/au1xxx_dbdma.h
@@ -368,6 +368,7 @@ void au1xxx_dbdma_dump(u32 chanid);
 u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr );
 
 u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp);
 
 /*
         Some compatibilty macros --
@@ -375,9 +376,12 @@ u32 au1xxx_ddma_add_device( dbdev_tab_t *dev );
 */
 #define au1xxx_dbdma_put_source(chanid,buf,nbytes)_au1xxx_dbdma_put_source(chanid, buf, nbytes, DDMA_FLAGS_IE)
 #define au1xxx_dbdma_put_source_flags(chanid,buf,nbytes,flags) _au1xxx_dbdma_put_source(chanid, buf, nbytes, flags)
+#define put_source_flags(chanid,buf,nbytes,flags) au1xxx_dbdma_put_source_flags(chanid,buf,nbytes,flags)
+
 
 #define au1xxx_dbdma_put_dest(chanid,buf,nbytes) _au1xxx_dbdma_put_dest(chanid, buf, nbytes, DDMA_FLAGS_IE)
 #define au1xxx_dbdma_put_dest_flags(chanid,buf,nbytes,flags) _au1xxx_dbdma_put_dest(chanid, buf, nbytes, flags)
+#define put_dest_flags(chanid,buf,nbytes,flags) au1xxx_dbdma_put_dest_flags(chanid,buf,nbytes,flags)
 
 /*
  *      Flags for the put_source/put_dest functions.
diff --git a/include/asm-mips/mach-au1x00/au1xxx_ide.h b/include/asm-mips/mach-au1x00/au1xxx_ide.h
new file mode 100644
index 000000000000..33d275c3b84c
--- /dev/null
+++ b/include/asm-mips/mach-au1x00/au1xxx_ide.h
@@ -0,0 +1,301 @@
+/*
+ * 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)
+