sata: Move drivers into new drivers/ata directory

At present we have the SATA and PATA drivers mixed up in the drivers/block
directory. It is better to split them out into their own place. Use
drivers/ata which is what Linux does.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

1 files changed, 144 insertions, 0 deletions

diff --git a/drivers/ata/libata.c b/drivers/ata/libata.c
new file mode 100644
index 0000000..d684270
--- /dev/null
+++ b/drivers/ata/libata.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2008 Freescale Semiconductor, Inc.
+ *		Dave Liu <daveliu@freescale.com>
+ *		port from the libata of linux kernel
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#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: %lld 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]);
+}