[U-Boot-Users] [PATCH v1 2/5] ATA: Add the libata support
Dave Liu
r63238 at freescale.com
Sun Mar 16 09:33:45 CET 2008
add simple libata support in u-boot
Signed-off-by: Dave Liu <daveliu at freescale.com>
---
drivers/block/Makefile | 1 +
drivers/block/libata.c | 158 ++++++++++++++++++++++++++++++++++++++
include/libata.h | 197 ++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 356 insertions(+), 0 deletions(-)
create mode 100644 drivers/block/libata.c
create mode 100644 include/libata.h
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index e069969..d63ca2d 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -27,6 +27,7 @@ LIB := $(obj)libblock.a
COBJS-y += ahci.o
COBJS-y += ata_piix.o
+COBJS-$(CONFIG_LIBATA) += libata.o
COBJS-y += sil680.o
COBJS-y += sym53c8xx.o
COBJS-y += systemace.o
diff --git a/drivers/block/libata.c b/drivers/block/libata.c
new file mode 100644
index 0000000..aed5be3
--- /dev/null
+++ b/drivers/block/libata.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2008 Freescale Semiconductor, Inc.
+ * Dave Liu <daveliu at freescale.com>
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * with the reference to libata of kernel
+ */
+
+#include <libata.h>
+
+u64 ata_id_n_sectors(u16 *id)
+{
+ if (ata_id_has_lba(id)) {
+ if (ata_id_has_lba48(id))
+ return ata_id_u64(id, ATA_ID_LBA48_SECTORS);
+ else
+ return ata_id_u32(id, ATA_ID_LBA_SECTORS);
+ } else {
+ return 0;
+ }
+}
+
+u32 ata_dev_classify(u32 sig)
+{
+ u8 lbam, lbah;
+
+ lbam = (sig >> 16) & 0xff;
+ lbah = (sig >> 24) & 0xff;
+
+ if (((lbam == 0) && (lbah == 0)) ||
+ ((lbam == 0x3c) && (lbah == 0xc3)))
+ return ATA_DEV_ATA;
+
+ if ((lbam == 0x14) && (lbah == 0xeb))
+ return ATA_DEV_ATAPI;
+
+ if ((lbam == 0x69) && (lbah == 0x96))
+ return ATA_DEV_PMP;
+
+ return ATA_DEV_UNKNOWN;
+}
+
+static void ata_id_string(const u16 *id, unsigned char *s,
+ unsigned int ofs, unsigned int len)
+{
+ unsigned int c;
+
+ while (len > 0) {
+ c = id[ofs] >> 8;
+ *s = c;
+ s++;
+
+ c = id[ofs] & 0xff;
+ *s = c;
+ s++;
+
+ ofs++;
+ len -= 2;
+ }
+}
+
+void ata_id_c_string(const u16 *id, unsigned char *s,
+ unsigned int ofs, unsigned int len)
+{
+ unsigned char *p;
+
+ ata_id_string(id, s, ofs, len - 1);
+
+ p = s + strnlen((char *)s, len - 1);
+ while (p > s && p[-1] == ' ')
+ p--;
+ *p = '\0';
+}
+
+void ata_dump_id(u16 *id)
+{
+ unsigned char serial[ATA_ID_SERNO_LEN + 1];
+ unsigned char firmware[ATA_ID_FW_REV_LEN + 1];
+ unsigned char product[ATA_ID_PROD_LEN + 1];
+ u64 n_sectors;
+
+ /* Serial number */
+ ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
+ printf("S/N: %s\n\r", serial);
+
+ /* Firmware version */
+ ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
+ printf("Firmware version: %s\n\r", firmware);
+
+ /* Product model */
+ ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
+ printf("Product model number: %s\n\r", product);
+
+ /* Total sectors of device */
+ n_sectors = ata_id_n_sectors(id);
+ printf("Capablity: %d sectors\n\r", n_sectors);
+
+ printf("id[49]: capabilities ==0x%04x\n"
+ "id[53]: field valid ==0x%04x\n"
+ "id[63]: mwdma ==0x%04x\n"
+ "id[64]: pio ==0x%04x\n"
+ "id[75]: queue depth ==0x%04x\n",
+ id[49],
+ id[53],
+ id[63],
+ id[64],
+ id[75]);
+
+ printf("id[76]: sata capablity ==0x%04x\n"
+ "id[78]: sata features supported ==0x%04x\n"
+ "id[79]: sata features enable ==0x%04x\n",
+ id[76],
+ id[78],
+ id[79]);
+
+ printf("id[80]: major version ==0x%04x\n"
+ "id[81]: minor version ==0x%04x\n"
+ "id[82]: command set supported 1 ==0x%04x\n"
+ "id[83]: command set supported 2 ==0x%04x\n"
+ "id[84]: command set extension ==0x%04x\n",
+ id[80],
+ id[81],
+ id[82],
+ id[83],
+ id[84]);
+ printf("id[85]: command set enable 1 ==0x%04x\n"
+ "id[86]: command set enable 2 ==0x%04x\n"
+ "id[87]: command set default ==0x%04x\n"
+ "id[88]: udma ==0x%04x\n"
+ "id[93]: hardware reset result ==0x%04x\n",
+ id[85],
+ id[86],
+ id[87],
+ id[88],
+ id[93]);
+}
+
+void ata_swap_buf_le16(u16 *buf, unsigned int buf_words)
+{
+ unsigned int i;
+
+ for (i = 0; i < buf_words; i++)
+ buf[i] = le16_to_cpu(buf[i]);
+}
diff --git a/include/libata.h b/include/libata.h
new file mode 100644
index 0000000..552a495
--- /dev/null
+++ b/include/libata.h
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2008 Freescale Semiconductor, Inc.
+ * Dave Liu <daveliu at freescale.com>
+ * port from libata of linux kernel
+ *
+ * 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 program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#ifndef __LIBATA_H__
+#define __LIBATA_H__
+
+/* command
+ */
+enum ata_cmd {
+ /* non-NCQ command */
+ ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
+ ATA_CMD_FLUSH_CACHE = 0xE7,
+ ATA_CMD_FLUSH_CACHE_EXT = 0xEA,
+ ATA_CMD_ID_ATA = 0xEC,
+ ATA_CMD_ID_ATAPI = 0xA1,
+ ATA_CMD_READ_DMA = 0xC8,
+ ATA_CMD_READ_DMA_EXT = 0x25,
+ ATA_CMD_WRITE_DMA = 0xCA,
+ ATA_CMD_WRITE_DMA_EXT = 0x35,
+ ATA_CMD_PIO_READ = 0x20,
+ ATA_CMD_PIO_READ_EXT = 0x24,
+ ATA_CMD_PIO_WRITE = 0x30,
+ ATA_CMD_PIO_WRITE_EXT = 0x34,
+ ATA_CMD_SET_FEATURES = 0xEF,
+
+ /* NCQ command */
+ ATA_CMD_READ_FPDMA_QUEUED = 0x60,
+ ATA_CMD_WRITE_FPDMA_QUEUED = 0x61,
+};
+
+/* SETFEATURES stuff
+ */
+enum ata_set_features {
+ /* SETFEATURES stuff */
+ SETFEATURES_XFER = 0x03,
+ XFER_UDMA_7 = 0x47,
+ XFER_UDMA_6 = 0x46,
+ XFER_UDMA_5 = 0x45,
+ XFER_UDMA_4 = 0x44,
+ XFER_UDMA_3 = 0x43,
+ XFER_UDMA_2 = 0x42,
+ XFER_UDMA_1 = 0x41,
+ XFER_UDMA_0 = 0x40,
+ XFER_MW_DMA_4 = 0x24, /* CFA only */
+ XFER_MW_DMA_3 = 0x23, /* CFA only */
+ XFER_MW_DMA_2 = 0x22,
+ XFER_MW_DMA_1 = 0x21,
+ XFER_MW_DMA_0 = 0x20,
+ XFER_PIO_6 = 0x0E, /* CFA only */
+ XFER_PIO_5 = 0x0D, /* CFA only */
+ XFER_PIO_4 = 0x0C,
+ XFER_PIO_3 = 0x0B,
+ XFER_PIO_2 = 0x0A,
+ XFER_PIO_1 = 0x09,
+ XFER_PIO_0 = 0x08,
+ XFER_PIO_SLOW = 0x00,
+
+ SETFEATURES_WC_ON = 0x02, /* Enable write cache */
+ SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
+
+ SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
+};
+
+enum ata_protocol {
+ ATA_PROT_UNKNOWN, /* unknown */
+ ATA_PROT_NODATA, /* no data */
+ ATA_PROT_PIO, /* PIO data xfer */
+ ATA_PROT_DMA, /* DMA */
+ ATA_PROT_NCQ, /* NCQ */
+ ATA_PROT_ATAPI, /* packet command, PIO data xfer */
+ ATA_PROT_ATAPI_NODATA, /* packet command, no data */
+ ATA_PROT_ATAPI_DMA, /* packet command, DMA */
+};
+
+enum ata_dev_typed {
+ ATA_DEV_ATA, /* ATA device */
+ ATA_DEV_ATAPI, /* ATAPI device */
+ ATA_DEV_PMP, /* Port Multiplier Port */
+ ATA_DEV_UNKNOWN, /* unknown */
+};
+
+enum {
+ ATA_SECT_SIZE = 512,
+ ATA_MAX_SECTORS_128 = 128,
+ ATA_MAX_SECTORS = 256,
+ ATA_MAX_SECTORS_LBA48 = 65535,
+
+ /* bits in ATA command block registers */
+ ATA_HOB = (1 << 7), /* LBA48 selector */
+ ATA_NIEN = (1 << 1), /* disable-irq flag */
+ ATA_LBA = (1 << 6), /* LBA28 selector */
+ ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
+ ATA_BUSY = (1 << 7), /* BSY status bit */
+ ATA_DRDY = (1 << 6), /* device ready */
+ ATA_DF = (1 << 5), /* device fault */
+ ATA_DRQ = (1 << 3), /* data request i/o */
+ ATA_ERR = (1 << 0), /* have an error */
+ ATA_SRST = (1 << 2), /* software reset */
+ ATA_ICRC = (1 << 7), /* interface CRC error */
+ ATA_UNC = (1 << 6), /* uncorrectable media error */
+ ATA_IDNF = (1 << 4), /* ID not found */
+ ATA_ABORTED = (1 << 2), /* command aborted */
+
+ ATA_ID_WORDS = 256,
+ ATA_ID_SERNO = 10,
+ ATA_ID_FW_REV = 23,
+ ATA_ID_PROD = 27,
+ ATA_ID_FIELD_VALID = 53,
+ ATA_ID_LBA_SECTORS = 60,
+ ATA_ID_MWDMA_MODES = 63,
+ ATA_ID_PIO_MODES = 64,
+ ATA_ID_QUEUE_DEPTH = 75,
+ ATA_ID_SATA_CAP = 76,
+ ATA_ID_SATA_FEATURES = 78,
+ ATA_ID_SATA_FEATURES_EN = 79,
+ ATA_ID_MAJOR_VER = 80,
+ ATA_ID_MINOR_VER = 81,
+ ATA_ID_UDMA_MODES = 88,
+ ATA_ID_LBA48_SECTORS = 100,
+
+ ATA_ID_SERNO_LEN = 20,
+ ATA_ID_FW_REV_LEN = 8,
+ ATA_ID_PROD_LEN = 40,
+
+ ATA_PIO3 = (1 << 0),
+ ATA_PIO4 = ATA_PIO3 | (1 << 1),
+
+ ATA_UDMA0 = (1 << 0),
+ ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
+ ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
+ ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
+ ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
+ ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
+ ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
+ ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
+};
+
+#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
+#define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
+#define ata_id_has_fua(id) ((id)[84] & (1 << 6))
+#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
+#define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13))
+#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
+#define ata_id_has_wcache(id) ((id)[82] & (1 << 5))
+#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
+#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
+#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
+#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
+
+#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]) )
+
+static inline unsigned int ata_id_major_version(const u16 *id)
+{
+ unsigned int mver;
+
+ if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
+ return 0;
+
+ for (mver = 14; mver >= 1; mver--)
+ if (id[ATA_ID_MAJOR_VER] & (1 << mver))
+ break;
+ return mver;
+}
+
+static inline int ata_id_is_sata(const u16 *id)
+{
+ return ata_id_major_version(id) >= 5 && id[93] == 0;
+}
+
+int sata_init(void);
+
+#endif /* __LIBATA_H__ */
--
1.5.4.rc4
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