Add driver for S-ATA-controller on Intel processors with South
Bridge, ICH-5, ICH-6 and ICH-7.
Implementation:
1. Code is divided in to two files. All functions, which are
controller specific are kept in "drivers/ata_piix.c" file and
functions, which are not controller specific, are kept in
"common/cmd_sata.c" file.
2. Reading and Writing from the S-ATA drive is done using PIO method.
3. Driver can be configured for 48-bit addressing by defining macro
CONFIG_LBA48, if this macro is not defined driver uses the 28-bit
addressing.
4. S-ATA read function is hooked to the File system, commands like
ext2ls and ext2load file can be used. This has been tested.
5. U-Boot command "SATA_init" is added, which initializes the S-ATA
controller and identifies the S-ATA drives connected to it.
6. U-Boot command "sata" is added, which is used to read/write, print
partition table and get info about the drives present. This I have
implemented in same way as "ide" command is implemented in U-Boot.
7. This driver is for S-ATA in native mode.
8. This driver does not support the Native command queuing and
Hot-plugging.
Signed-off-by: Mushtaq Khan <mushtaq_k@procsys.com>
diff --git a/include/sata.h b/include/sata.h
new file mode 100644
index 0000000..c6fa2ab
--- /dev/null
+++ b/include/sata.h
@@ -0,0 +1,108 @@
+
+#if (DEBUG_SATA)
+#define PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define PRINTF(fmt,args...)
+#endif
+
+struct sata_ioports {
+ unsigned long cmd_addr;
+ unsigned long data_addr;
+ unsigned long error_addr;
+ unsigned long feature_addr;
+ unsigned long nsect_addr;
+ unsigned long lbal_addr;
+ unsigned long lbam_addr;
+ unsigned long lbah_addr;
+ unsigned long device_addr;
+ unsigned long status_addr;
+ unsigned long command_addr;
+ unsigned long altstatus_addr;
+ unsigned long ctl_addr;
+ unsigned long bmdma_addr;
+ unsigned long scr_addr;
+};
+
+struct sata_port {
+ unsigned char port_no; /*primary-0, secondary=1 */
+ struct sata_ioports ioaddr; /*ATA cmd/ctl/dma reg blks */
+ unsigned char ctl_reg;
+ unsigned char last_ctl;
+ unsigned char port_state; /*1-port is present and
+ 0-port is not available */
+ unsigned char dev_mask;
+};
+
+/***********SATA LIBRARY SPECIFIC DEFINITIONS AND DECLARATIONS**************/
+#ifdef SATA_DECL /*SATA library specific declarations */
+#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
+#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
+#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
+#define ata_id_u32(id,n) \
+ (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
+#define ata_id_u64(id,n) \
+ (((u64) (id)[(n) + 3] << 48) | \
+ ((u64) (id)[(n) + 2] << 32) | \
+ ((u64) (id)[(n) + 1] << 16) | \
+ ((u64) (id)[(n) + 0]) )
+#endif
+
+#ifdef SATA_DECL /*SATA library specific declarations */
+static inline void
+ata_dump_id (u16 * id)
+{
+ PRINTF ("49==0x%04x "
+ "53==0x%04x "
+ "63==0x%04x "
+ "64==0x%04x "
+ "75==0x%04x \n", id[49], id[53], id[63], id[64], id[75]);
+ PRINTF ("80==0x%04x "
+ "81==0x%04x "
+ "82==0x%04x "
+ "83==0x%04x "
+ "84==0x%04x \n", id[80], id[81], id[82], id[83], id[84]);
+ PRINTF ("88==0x%04x " "93==0x%04x\n", id[88], id[93]);
+}
+#endif
+
+#ifdef SATA_DECL /*SATA library specific declarations */
+int sata_bus_softreset (int num);
+void sata_identify (int num, int dev);
+void sata_port (struct sata_ioports *ioport);
+void set_Feature_cmd (int num, int dev);
+int sata_devchk (struct sata_ioports *ioaddr, int dev);
+void dev_select (struct sata_ioports *ioaddr, int dev);
+u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits, unsigned int max);
+u8 sata_chk_status (struct sata_ioports *ioaddr);
+ulong sata_read (int device, lbaint_t blknr, ulong blkcnt, ulong * buffer);
+ulong sata_write (int device, lbaint_t blknr, ulong blkcnt, ulong * buffer);
+void msleep (int count);
+#else
+extern int sata_bus_softreset (int num);
+extern void sata_identify (int num, int dev);
+extern void sata_port (struct sata_ioports *ioport);
+extern void set_Feature_cmd (int num, int dev);
+extern ulong sata_read (int device, lbaint_t blknr,
+ ulong blkcnt, ulong * buffer);
+extern ulong sata_write (int device, lbaint_t blknr,
+ ulong blkcnt, ulong * buffer);
+extern void msleep (int count);
+#endif
+
+/************DRIVER SPECIFIC DEFINITIONS AND DECLARATIONS**************/
+
+#ifdef DRV_DECL /*Driver specific declaration */
+int init_sata (void);
+#else
+extern int init_sata (void);
+#endif
+
+#ifdef DRV_DECL /*Defines Driver Specific variables */
+struct sata_port port[CFG_SATA_MAXBUS];
+block_dev_desc_t sata_dev_desc[CFG_SATA_MAXDEVICES];
+int curr_dev = -1;
+#else
+extern struct sata_port port[CFG_SATA_MAXBUS];
+extern block_dev_desc_t sata_dev_desc[CFG_SATA_MAXDEVICES];
+extern int curr_dev;
+#endif