Patchwork [U-Boot,7/7] ahci: convert to use libata functions and definitions

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Submitter Rob Herring
Date May 21, 2013, 10:44 p.m.
Message ID <1369176276-1895-7-git-send-email-robherring2@gmail.com>
Download mbox | patch
Permalink /patch/245445/
State Superseded
Delegated to: Tom Rini
Headers show

Comments

Rob Herring - May 21, 2013, 10:44 p.m.
From: Rob Herring <rob.herring@calxeda.com>

libata already has similar functions as implemented in the ahci code.
Refactor the code to use the libata variants and remove the dependency on
ata.h. Convert some defines to use the version from libata.h. Also, remove
some unnecessary memset's of bss data.

This is a step toward hopefully merging ahci.c and dw_ahsata.c which are
essentially the same driver.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
---
 drivers/block/ahci.c          | 80 +++++++++++++------------------------------
 include/ahci.h                | 23 -------------
 include/configs/MPC8544DS.h   |  1 +
 include/configs/MPC8572DS.h   |  1 +
 include/configs/MPC8610HPCD.h |  1 +
 include/configs/MPC8641HPCN.h |  1 +
 include/configs/P2020DS.h     |  1 +
 include/configs/coreboot.h    |  1 +
 include/configs/highbank.h    |  1 +
 9 files changed, 31 insertions(+), 79 deletions(-)
Tom Rini - May 24, 2013, 1:53 p.m.
On Tue, May 21, 2013 at 05:44:36PM -0500, Rob Herring wrote:

> From: Rob Herring <rob.herring@calxeda.com>
> 
> libata already has similar functions as implemented in the ahci code.
> Refactor the code to use the libata variants and remove the dependency on
> ata.h. Convert some defines to use the version from libata.h. Also, remove
> some unnecessary memset's of bss data.
> 
> This is a step toward hopefully merging ahci.c and dw_ahsata.c which are
> essentially the same driver.
> 
> Signed-off-by: Rob Herring <rob.herring@calxeda.com>

Looks OK so:
Reviewed-by: Tom Rini <trini@ti.com>

But did you build coreboot/powerpc to make sure they still link fine at
least and we've got no new warnings?  Thanks!

Patch

diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index ac60891..8c17f1a 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -33,14 +33,14 @@ 
 #include <asm/io.h>
 #include <malloc.h>
 #include <scsi.h>
-#include <ata.h>
+#include <libata.h>
 #include <linux/ctype.h>
 #include <ahci.h>
 
 static int ata_io_flush(u8 port);
 
 struct ahci_probe_ent *probe_ent = NULL;
-hd_driveid_t *ataid[AHCI_MAX_PORTS];
+u16 *ataid[AHCI_MAX_PORTS];
 
 #define writel_with_flush(a,b)	do { writel(a,b); readl(b); } while (0)
 
@@ -257,7 +257,7 @@  static int ahci_host_init(struct ahci_probe_ent *probe_ent)
 		j = 0;
 		while (j < WAIT_MS_SPINUP) {
 			tmp = readl(port_mmio + PORT_TFDATA);
-			if (!(tmp & (ATA_STAT_BUSY | ATA_STAT_DRQ)))
+			if (!(tmp & (ATA_BUSY | ATA_DRQ)))
 				break;
 			udelay(1000);
 			tmp = readl(port_mmio + PORT_SCR_STAT) & 0xf;
@@ -394,8 +394,6 @@  static int ahci_init_one(pci_dev_t pdev)
 	u16 vendor;
 	int rc;
 
-	memset((void *)ataid, 0, sizeof(hd_driveid_t *) * AHCI_MAX_PORTS);
-
 	probe_ent = malloc(sizeof(struct ahci_probe_ent));
 	memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
 	probe_ent->dev = pdev;
@@ -485,7 +483,7 @@  static void ahci_set_feature(u8 port)
 	memset(fis, 0, sizeof(fis));
 	fis[0] = 0x27;
 	fis[1] = 1 << 7;
-	fis[2] = ATA_CMD_SETF;
+	fis[2] = ATA_CMD_SET_FEATURES;
 	fis[3] = SETFEATURES_XFER;
 	fis[12] = __ilog2(probe_ent->udma_mask + 1) + 0x40 - 0x01;
 
@@ -623,27 +621,6 @@  static char *ata_id_strcpy(u16 *target, u16 *src, int len)
 	return (char *)target;
 }
 
-
-static void dump_ataid(hd_driveid_t *ataid)
-{
-	debug("(49)ataid->capability = 0x%x\n", ataid->capability);
-	debug("(53)ataid->field_valid =0x%x\n", ataid->field_valid);
-	debug("(63)ataid->dma_mword = 0x%x\n", ataid->dma_mword);
-	debug("(64)ataid->eide_pio_modes = 0x%x\n", ataid->eide_pio_modes);
-	debug("(75)ataid->queue_depth = 0x%x\n", ataid->queue_depth);
-	debug("(80)ataid->major_rev_num = 0x%x\n", ataid->major_rev_num);
-	debug("(81)ataid->minor_rev_num = 0x%x\n", ataid->minor_rev_num);
-	debug("(82)ataid->command_set_1 = 0x%x\n", ataid->command_set_1);
-	debug("(83)ataid->command_set_2 = 0x%x\n", ataid->command_set_2);
-	debug("(84)ataid->cfsse = 0x%x\n", ataid->cfsse);
-	debug("(85)ataid->cfs_enable_1 = 0x%x\n", ataid->cfs_enable_1);
-	debug("(86)ataid->cfs_enable_2 = 0x%x\n", ataid->cfs_enable_2);
-	debug("(87)ataid->csf_default = 0x%x\n", ataid->csf_default);
-	debug("(88)ataid->dma_ultra = 0x%x\n", ataid->dma_ultra);
-	debug("(93)ataid->hw_config = 0x%x\n", ataid->hw_config);
-}
-
-
 /*
  * SCSI INQUIRY command operation.
  */
@@ -657,7 +634,7 @@  static int ata_scsiop_inquiry(ccb *pccb)
 		95 - 4,
 	};
 	u8 fis[20];
-	u8 *tmpid;
+	u16 *tmpid;
 	u8 port;
 
 	/* Clean ccb data buffer */
@@ -672,15 +649,16 @@  static int ata_scsiop_inquiry(ccb *pccb)
 	/* Construct the FIS */
 	fis[0] = 0x27;		/* Host to device FIS. */
 	fis[1] = 1 << 7;	/* Command FIS. */
-	fis[2] = ATA_CMD_IDENT;	/* Command byte. */
+	fis[2] = ATA_CMD_ID_ATA; /* Command byte. */
 
 	/* Read id from sata */
 	port = pccb->target;
-	if (!(tmpid = malloc(sizeof(hd_driveid_t))))
+	tmpid = malloc(ATA_ID_WORDS * 2);
+	if (!tmpid)
 		return -ENOMEM;
 
-	if (ahci_device_data_io(port, (u8 *) &fis, sizeof(fis), tmpid,
-				sizeof(hd_driveid_t), 0)) {
+	if (ahci_device_data_io(port, (u8 *) &fis, sizeof(fis), (u8 *)tmpid,
+				ATA_ID_WORDS * 2, 0)) {
 		debug("scsi_ahci: SCSI inquiry command failure.\n");
 		free(tmpid);
 		return -EIO;
@@ -688,13 +666,16 @@  static int ata_scsiop_inquiry(ccb *pccb)
 
 	if (ataid[port])
 		free(ataid[port]);
-	ataid[port] = (hd_driveid_t *) tmpid;
+	ataid[port] = tmpid;
+	ata_swap_buf_le16(tmpid, ATA_ID_WORDS);
 
 	memcpy(&pccb->pdata[8], "ATA     ", 8);
-	ata_id_strcpy((u16 *) &pccb->pdata[16], (u16 *)ataid[port]->model, 16);
-	ata_id_strcpy((u16 *) &pccb->pdata[32], (u16 *)ataid[port]->fw_rev, 4);
+	ata_id_strcpy((u16 *) &pccb->pdata[16], &tmpid[ATA_ID_PROD], 16);
+	ata_id_strcpy((u16 *) &pccb->pdata[32], &tmpid[ATA_ID_FW_REV], 4);
 
-	dump_ataid(ataid[port]);
+#ifdef DEBUG
+	ata_dump_id(tmpid);
+#endif
 	return 0;
 }
 
@@ -742,7 +723,7 @@  static int ata_scsiop_read_write(ccb *pccb, u8 is_write)
 
 		now_blocks = min(MAX_SATA_BLOCKS_READ_WRITE, blocks);
 
-		transfer_size = ATA_BLOCKSIZE * now_blocks;
+		transfer_size = ATA_SECT_SIZE * now_blocks;
 		if (transfer_size > user_buffer_size) {
 			printf("scsi_ahci: Error: buffer too small.\n");
 			return -EIO;
@@ -797,6 +778,7 @@  static int ata_scsiop_read_write(ccb *pccb, u8 is_write)
 static int ata_scsiop_read_capacity10(ccb *pccb)
 {
 	u32 cap;
+	u64 cap64;
 	u32 block_size;
 
 	if (!ataid[pccb->target]) {
@@ -806,18 +788,11 @@  static int ata_scsiop_read_capacity10(ccb *pccb)
 		return -EPERM;
 	}
 
-	cap = le32_to_cpu(ataid[pccb->target]->lba_capacity);
-	if (cap == 0xfffffff) {
-		unsigned short *cap48 = ataid[pccb->target]->lba48_capacity;
-		if (cap48[2] || cap48[3]) {
-			cap = 0xffffffff;
-		} else {
-			cap = (le16_to_cpu(cap48[1]) << 16) |
-			      (le16_to_cpu(cap48[0]));
-		}
-	}
+	cap64 = ata_id_n_sectors(ataid[pccb->target]);
+	if (cap64 > 0x100000000ULL)
+		cap64 = 0xffffffff;
 
-	cap = cpu_to_be32(cap);
+	cap = cpu_to_be32(cap64);
 	memcpy(pccb->pdata, &cap, sizeof(cap));
 
 	block_size = cpu_to_be32((u32)512);
@@ -842,12 +817,7 @@  static int ata_scsiop_read_capacity16(ccb *pccb)
 		return -EPERM;
 	}
 
-	cap = le32_to_cpu(ataid[pccb->target]->lba_capacity);
-	if (cap == 0xfffffff) {
-		memcpy(&cap, ataid[pccb->target]->lba48_capacity, sizeof(cap));
-		cap = le64_to_cpu(cap);
-	}
-
+	cap = ata_id_n_sectors(ataid[pccb->target]);
 	cap = cpu_to_be64(cap);
 	memcpy(pccb->pdata, &cap, sizeof(cap));
 
@@ -934,8 +904,6 @@  int ahci_init(u32 base)
 	int i, rc = 0;
 	u32 linkmap;
 
-	memset(ataid, 0, sizeof(ataid));
-
 	probe_ent = malloc(sizeof(struct ahci_probe_ent));
 	memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
 
diff --git a/include/ahci.h b/include/ahci.h
index babbdc6..16ef08f 100644
--- a/include/ahci.h
+++ b/include/ahci.h
@@ -120,29 +120,6 @@ 
 
 #define AHCI_MAX_PORTS		32
 
-/* SETFEATURES stuff */
-#define SETFEATURES_XFER	0x03
-#define XFER_UDMA_7		0x47
-#define XFER_UDMA_6		0x46
-#define XFER_UDMA_5		0x45
-#define XFER_UDMA_4		0x44
-#define XFER_UDMA_3		0x43
-#define XFER_UDMA_2		0x42
-#define XFER_UDMA_1		0x41
-#define XFER_UDMA_0		0x40
-#define XFER_MW_DMA_2		0x22
-#define XFER_MW_DMA_1		0x21
-#define XFER_MW_DMA_0		0x20
-#define XFER_SW_DMA_2		0x12
-#define XFER_SW_DMA_1		0x11
-#define XFER_SW_DMA_0		0x10
-#define XFER_PIO_4		0x0C
-#define XFER_PIO_3		0x0B
-#define XFER_PIO_2		0x0A
-#define XFER_PIO_1		0x09
-#define XFER_PIO_0		0x08
-#define XFER_PIO_SLOW		0x00
-
 #define ATA_FLAG_SATA		(1 << 3)
 #define ATA_FLAG_NO_LEGACY	(1 << 4) /* no legacy mode check */
 #define ATA_FLAG_MMIO		(1 << 6) /* use MMIO, not PIO */
diff --git a/include/configs/MPC8544DS.h b/include/configs/MPC8544DS.h
index d5f3c5f..a556783 100644
--- a/include/configs/MPC8544DS.h
+++ b/include/configs/MPC8544DS.h
@@ -334,6 +334,7 @@  extern unsigned long get_board_sys_clk(unsigned long dummy);
 #define CONFIG_SCSI_AHCI
 
 #ifdef CONFIG_SCSI_AHCI
+#define CONFIG_LIBATA
 #define CONFIG_SATA_ULI5288
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID	4
 #define CONFIG_SYS_SCSI_MAX_LUN	1
diff --git a/include/configs/MPC8572DS.h b/include/configs/MPC8572DS.h
index d233365..b6f4e2e 100644
--- a/include/configs/MPC8572DS.h
+++ b/include/configs/MPC8572DS.h
@@ -554,6 +554,7 @@ 
 #define CONFIG_SCSI_AHCI
 
 #ifdef CONFIG_SCSI_AHCI
+#define CONFIG_LIBATA
 #define CONFIG_SATA_ULI5288
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID	4
 #define CONFIG_SYS_SCSI_MAX_LUN	1
diff --git a/include/configs/MPC8610HPCD.h b/include/configs/MPC8610HPCD.h
index c619827..c48d76b 100644
--- a/include/configs/MPC8610HPCD.h
+++ b/include/configs/MPC8610HPCD.h
@@ -326,6 +326,7 @@ 
 #define CONFIG_SCSI_AHCI
 
 #ifdef CONFIG_SCSI_AHCI
+#define CONFIG_LIBATA
 #define CONFIG_SATA_ULI5288
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID	4
 #define CONFIG_SYS_SCSI_MAX_LUN	1
diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h
index 2643097..f4206b2 100644
--- a/include/configs/MPC8641HPCN.h
+++ b/include/configs/MPC8641HPCN.h
@@ -429,6 +429,7 @@  extern unsigned long get_board_sys_clk(unsigned long dummy);
 #define CONFIG_SCSI_AHCI
 
 #ifdef CONFIG_SCSI_AHCI
+#define CONFIG_LIBATA
 #define CONFIG_SATA_ULI5288
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID	4
 #define CONFIG_SYS_SCSI_MAX_LUN	1
diff --git a/include/configs/P2020DS.h b/include/configs/P2020DS.h
index a975ee1..f4d4bbc 100644
--- a/include/configs/P2020DS.h
+++ b/include/configs/P2020DS.h
@@ -527,6 +527,7 @@ 
 #define CONFIG_SCSI_AHCI
 
 #ifdef CONFIG_SCSI_AHCI
+#define CONFIG_LIBATA
 #define CONFIG_SATA_ULI5288
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID	4
 #define CONFIG_SYS_SCSI_MAX_LUN	1
diff --git a/include/configs/coreboot.h b/include/configs/coreboot.h
index be04a75..f456744 100644
--- a/include/configs/coreboot.h
+++ b/include/configs/coreboot.h
@@ -72,6 +72,7 @@ 
 #define CONFIG_SCSI_AHCI
 
 #ifdef CONFIG_SCSI_AHCI
+#define CONFIG_LIBATA
 #define CONFIG_SYS_64BIT_LBA
 #define CONFIG_SATA_INTEL		1
 #define CONFIG_SCSI_DEV_LIST		{PCI_VENDOR_ID_INTEL, \
diff --git a/include/configs/highbank.h b/include/configs/highbank.h
index 62cc08c..123befd 100644
--- a/include/configs/highbank.h
+++ b/include/configs/highbank.h
@@ -46,6 +46,7 @@ 
 #define CONFIG_SYS_BOOTCOUNT_ADDR	0xfff3cf0c
 
 #define CONFIG_MISC_INIT_R
+#define CONFIG_LIBATA
 #define CONFIG_SCSI_AHCI
 #define CONFIG_SCSI_AHCI_PLAT
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID	5