Merge branch 'linus' into stackprotector

Conflicts:
	arch/x86/kernel/Makefile
	include/asm-x86/pda.h

1 files changed, 235 insertions, 47 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 1c622e2b050..a53318b8cbd 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -30,6 +30,7 @@
 #define __LINUX_ATA_H__
 
 #include <linux/types.h>
+#include <asm/byteorder.h>
 
 /* defines only for the constants which don't work well as enums */
 #define ATA_DMA_BOUNDARY	0xffffUL
@@ -46,18 +47,49 @@ enum {
 	ATA_MAX_SECTORS_TAPE	= 65535,
 
 	ATA_ID_WORDS		= 256,
+	ATA_ID_CONFIG		= 0,
+	ATA_ID_CYLS		= 1,
+	ATA_ID_HEADS		= 3,
+	ATA_ID_SECTORS		= 6,
 	ATA_ID_SERNO		= 10,
+	ATA_ID_BUF_SIZE		= 21,
 	ATA_ID_FW_REV		= 23,
 	ATA_ID_PROD		= 27,
+	ATA_ID_MAX_MULTSECT	= 47,
+	ATA_ID_DWORD_IO		= 48,
+	ATA_ID_CAPABILITY	= 49,
 	ATA_ID_OLD_PIO_MODES	= 51,
+	ATA_ID_OLD_DMA_MODES	= 52,
 	ATA_ID_FIELD_VALID	= 53,
+	ATA_ID_CUR_CYLS		= 54,
+	ATA_ID_CUR_HEADS	= 55,
+	ATA_ID_CUR_SECTORS	= 56,
+	ATA_ID_MULTSECT		= 59,
+	ATA_ID_LBA_CAPACITY	= 60,
+	ATA_ID_SWDMA_MODES	= 62,
 	ATA_ID_MWDMA_MODES	= 63,
 	ATA_ID_PIO_MODES	= 64,
 	ATA_ID_EIDE_DMA_MIN	= 65,
+	ATA_ID_EIDE_DMA_TIME	= 66,
 	ATA_ID_EIDE_PIO		= 67,
 	ATA_ID_EIDE_PIO_IORDY	= 68,
-	ATA_ID_UDMA_MODES	= 88,
+	ATA_ID_QUEUE_DEPTH	= 75,
 	ATA_ID_MAJOR_VER	= 80,
+	ATA_ID_COMMAND_SET_1	= 82,
+	ATA_ID_COMMAND_SET_2	= 83,
+	ATA_ID_CFSSE		= 84,
+	ATA_ID_CFS_ENABLE_1	= 85,
+	ATA_ID_CFS_ENABLE_2	= 86,
+	ATA_ID_CSF_DEFAULT	= 87,
+	ATA_ID_UDMA_MODES	= 88,
+	ATA_ID_HW_CONFIG	= 93,
+	ATA_ID_SPG		= 98,
+	ATA_ID_LBA_CAPACITY_2	= 100,
+	ATA_ID_LAST_LUN		= 126,
+	ATA_ID_DLF		= 128,
+	ATA_ID_CSFO		= 129,
+	ATA_ID_CFA_POWER	= 160,
+	ATA_ID_ROT_SPEED	= 217,
 	ATA_ID_PIO4		= (1 << 1),
 
 	ATA_ID_SERNO_LEN	= 20,
@@ -123,13 +155,26 @@ enum {
 	ATA_BUSY		= (1 << 7),	/* BSY status bit */
 	ATA_DRDY		= (1 << 6),	/* device ready */
 	ATA_DF			= (1 << 5),	/* device fault */
+	ATA_DSC			= (1 << 4),	/* drive seek complete */
 	ATA_DRQ			= (1 << 3),	/* data request i/o */
+	ATA_CORR		= (1 << 2),	/* corrected data error */
+	ATA_IDX			= (1 << 1),	/* index */
 	ATA_ERR			= (1 << 0),	/* have an error */
 	ATA_SRST		= (1 << 2),	/* software reset */
 	ATA_ICRC		= (1 << 7),	/* interface CRC error */
+	ATA_BBK			= ATA_ICRC,	/* pre-EIDE: block marked bad */
 	ATA_UNC			= (1 << 6),	/* uncorrectable media error */
+	ATA_MC			= (1 << 5),	/* media changed */
 	ATA_IDNF		= (1 << 4),	/* ID not found */
+	ATA_MCR			= (1 << 3),	/* media change requested */
 	ATA_ABORTED		= (1 << 2),	/* command aborted */
+	ATA_TRK0NF		= (1 << 1),	/* track 0 not found */
+	ATA_AMNF		= (1 << 0),	/* address mark not found */
+	ATAPI_LFS		= 0xF0,		/* last failed sense */
+	ATAPI_EOM		= ATA_TRK0NF,	/* end of media */
+	ATAPI_ILI		= ATA_AMNF,	/* illegal length indication */
+	ATAPI_IO		= (1 << 1),
+	ATAPI_COD		= (1 << 0),
 
 	/* ATA command block registers */
 	ATA_REG_DATA		= 0x00,
@@ -192,6 +237,13 @@ enum {
 	ATA_CMD_PMP_WRITE	= 0xE8,
 	ATA_CMD_CONF_OVERLAY	= 0xB1,
 	ATA_CMD_SEC_FREEZE_LOCK	= 0xF5,
+	ATA_CMD_SMART		= 0xB0,
+	ATA_CMD_MEDIA_LOCK	= 0xDE,
+	ATA_CMD_MEDIA_UNLOCK	= 0xDF,
+	/* marked obsolete in the ATA/ATAPI-7 spec */
+	ATA_CMD_RESTORE		= 0x10,
+	/* EXABYTE specific */
+	ATA_EXABYTE_ENABLE_NEST	= 0xF0,
 
 	/* READ_LOG_EXT pages */
 	ATA_LOG_SATA_NCQ	= 0x10,
@@ -232,6 +284,10 @@ enum {
 	SETFEATURES_WC_ON	= 0x02, /* Enable write cache */
 	SETFEATURES_WC_OFF	= 0x82, /* Disable write cache */
 
+	/* Enable/Disable Automatic Acoustic Management */
+	SETFEATURES_AAM_ON	= 0x42,
+	SETFEATURES_AAM_OFF	= 0xC2,
+
 	SETFEATURES_SPINUP	= 0x07, /* Spin-up drive */
 
 	SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
@@ -254,6 +310,15 @@ enum {
 	ATA_DCO_IDENTIFY	= 0xC2,
 	ATA_DCO_SET		= 0xC3,
 
+	/* feature values for SMART */
+	ATA_SMART_ENABLE	= 0xD8,
+	ATA_SMART_READ_VALUES	= 0xD0,
+	ATA_SMART_READ_THRESHOLDS = 0xD1,
+
+	/* password used in LBA Mid / LBA High for executing SMART commands */
+	ATA_SMART_LBAM_PASS	= 0x4F,
+	ATA_SMART_LBAH_PASS	= 0xC2,
+
 	/* ATAPI stuff */
 	ATAPI_PKT_DMA		= (1 << 0),
 	ATAPI_DMADIR		= (1 << 2),	/* ATAPI data dir:
@@ -438,17 +503,17 @@ static inline int ata_is_data(u8 prot)
 /*
  * id tests
  */
-#define ata_id_is_ata(id)	(((id)[0] & (1 << 15)) == 0)
-#define ata_id_has_lba(id)	((id)[49] & (1 << 9))
-#define ata_id_has_dma(id)	((id)[49] & (1 << 8))
+#define ata_id_is_ata(id)	(((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
+#define ata_id_has_lba(id)	((id)[ATA_ID_CAPABILITY] & (1 << 9))
+#define ata_id_has_dma(id)	((id)[ATA_ID_CAPABILITY] & (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_removeable(id)	((id)[0] & (1 << 7))
+#define ata_id_queue_depth(id)	(((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
+#define ata_id_removeable(id)	((id)[ATA_ID_CONFIG] & (1 << 7))
 #define ata_id_has_atapi_AN(id)	\
 	( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
 	  ((id)[78] & (1 << 5)) )
-#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
-#define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
+#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
+#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
 #define ata_id_u32(id,n)	\
 	(((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
 #define ata_id_u64(id,n)	\
@@ -457,7 +522,7 @@ static inline int ata_is_data(u8 prot)
 	  ((u64) (id)[(n) + 1] << 16) |	\
 	  ((u64) (id)[(n) + 0]) )
 
-#define ata_id_cdb_intr(id)	(((id)[0] & 0x60) == 0x20)
+#define ata_id_cdb_intr(id)	(((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
 
 static inline bool ata_id_has_hipm(const u16 *id)
 {
@@ -482,75 +547,106 @@ static inline bool ata_id_has_dipm(const u16 *id)
 
 static inline int ata_id_has_fua(const u16 *id)
 {
-	if ((id[84] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
 		return 0;
-	return id[84] & (1 << 6);
+	return id[ATA_ID_CFSSE] & (1 << 6);
 }
 
 static inline int ata_id_has_flush(const u16 *id)
 {
-	if ((id[83] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
+		return 0;
+	return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
+}
+
+static inline int ata_id_flush_enabled(const u16 *id)
+{
+	if (ata_id_has_flush(id) == 0)
 		return 0;
-	return id[83] & (1 << 12);
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+		return 0;
+	return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
 }
 
 static inline int ata_id_has_flush_ext(const u16 *id)
 {
-	if ((id[83] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 		return 0;
-	return id[83] & (1 << 13);
+	return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
+}
+
+static inline int ata_id_flush_ext_enabled(const u16 *id)
+{
+	if (ata_id_has_flush_ext(id) == 0)
+		return 0;
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+		return 0;
+	/*
+	 * some Maxtor disks have bit 13 defined incorrectly
+	 * so check bit 10 too
+	 */
+	return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
 }
 
 static inline int ata_id_has_lba48(const u16 *id)
 {
-	if ((id[83] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 		return 0;
-	if (!ata_id_u64(id, 100))
+	if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
 		return 0;
-	return id[83] & (1 << 10);
+	return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
+}
+
+static inline int ata_id_lba48_enabled(const u16 *id)
+{
+	if (ata_id_has_lba48(id) == 0)
+		return 0;
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+		return 0;
+	return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
 }
 
 static inline int ata_id_hpa_enabled(const u16 *id)
 {
 	/* Yes children, word 83 valid bits cover word 82 data */
-	if ((id[83] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 		return 0;
 	/* And 87 covers 85-87 */
-	if ((id[87] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 		return 0;
 	/* Check command sets enabled as well as supported */
-	if ((id[85] & ( 1 << 10)) == 0)
+	if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
 		return 0;
-	return id[82] & (1 << 10);
+	return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
 }
 
 static inline int ata_id_has_wcache(const u16 *id)
 {
 	/* Yes children, word 83 valid bits cover word 82 data */
-	if ((id[83] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 		return 0;
-	return id[82] & (1 << 5);
+	return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
 }
 
 static inline int ata_id_has_pm(const u16 *id)
 {
-	if ((id[83] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
 		return 0;
-	return id[82] & (1 << 3);
+	return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
 }
 
 static inline int ata_id_rahead_enabled(const u16 *id)
 {
-	if ((id[87] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 		return 0;
-	return id[85] & (1 << 6);
+	return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
 }
 
 static inline int ata_id_wcache_enabled(const u16 *id)
 {
-	if ((id[87] & 0xC000) != 0x4000)
+	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
 		return 0;
-	return id[85] & (1 << 5);
+	return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
 }
 
 /**
@@ -581,7 +677,15 @@ static inline unsigned int ata_id_major_version(const u16 *id)
 
 static inline int ata_id_is_sata(const u16 *id)
 {
-	return ata_id_major_version(id) >= 5 && id[93] == 0;
+	/*
+	 * See if word 93 is 0 AND drive is at least ATA-5 compatible
+	 * verifying that word 80 by casting it to a signed type --
+	 * this trick allows us to filter out the reserved values of
+	 * 0x0000 and 0xffff along with the earlier ATA revisions...
+	 */
+	if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
+		return 1;
+	return 0;
 }
 
 static inline int ata_id_has_tpm(const u16 *id)
@@ -599,7 +703,16 @@ static inline int ata_id_has_dword_io(const u16 *id)
 	/* ATA 8 reuses this flag for "trusted" computing */
 	if (ata_id_major_version(id) > 7)
 		return 0;
-	if (id[48] & (1 << 0))
+	if (id[ATA_ID_DWORD_IO] & (1 << 0))
+		return 1;
+	return 0;
+}
+
+static inline int ata_id_has_unload(const u16 *id)
+{
+	if (ata_id_major_version(id) >= 7 &&
+	    (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
+	    id[ATA_ID_CFSSE] & (1 << 13))
 		return 1;
 	return 0;
 }
@@ -608,45 +721,50 @@ static inline int ata_id_current_chs_valid(const u16 *id)
 {
 	/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
 	   has not been issued to the device then the values of
-	   id[54] to id[56] are vendor specific. */
-	return (id[53] & 0x01) && /* Current translation valid */
-		id[54] &&  /* cylinders in current translation */
-		id[55] &&  /* heads in current translation */
-		id[55] <= 16 &&
-		id[56];    /* sectors in current translation */
+	   id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
+	return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
+		id[ATA_ID_CUR_CYLS] &&  /* cylinders in current translation */
+		id[ATA_ID_CUR_HEADS] &&  /* heads in current translation */
+		id[ATA_ID_CUR_HEADS] <= 16 &&
+		id[ATA_ID_CUR_SECTORS];    /* sectors in current translation */
 }
 
 static inline int ata_id_is_cfa(const u16 *id)
 {
-	u16 v = id[0];
-	if (v == 0x848A)	/* Standard CF */
+	if (id[ATA_ID_CONFIG] == 0x848A)	/* Standard CF */
 		return 1;
 	/* Could be CF hiding as standard ATA */
-	if (ata_id_major_version(id) >= 3 &&  id[82] != 0xFFFF &&
-			(id[82] & ( 1 << 2)))
+	if (ata_id_major_version(id) >= 3 &&
+	    id[ATA_ID_COMMAND_SET_1] != 0xFFFF &&
+	   (id[ATA_ID_COMMAND_SET_1] & (1 << 2)))
 		return 1;
 	return 0;
 }
 
+static inline int ata_id_is_ssd(const u16 *id)
+{
+	return id[ATA_ID_ROT_SPEED] == 0x01;
+}
+
 static inline int ata_drive_40wire(const u16 *dev_id)
 {
 	if (ata_id_is_sata(dev_id))
 		return 0;	/* SATA */
-	if ((dev_id[93] & 0xE000) == 0x6000)
+	if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
 		return 0;	/* 80 wire */
 	return 1;
 }
 
 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
 {
-	if ((dev_id[93] & 0x2000) == 0x2000)
+	if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
 		return 0;	/* 80 wire */
 	return 1;
 }
 
 static inline int atapi_cdb_len(const u16 *dev_id)
 {
-	u16 tmp = dev_id[0] & 0x3;
+	u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
 	switch (tmp) {
 	case 0:		return 12;
 	case 1:		return 16;
@@ -656,7 +774,7 @@ static inline int atapi_cdb_len(const u16 *dev_id)
 
 static inline int atapi_command_packet_set(const u16 *dev_id)
 {
-	return (dev_id[0] >> 8) & 0x1f;
+	return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
 }
 
 static inline int atapi_id_dmadir(const u16 *dev_id)
@@ -664,6 +782,76 @@ static inline int atapi_id_dmadir(const u16 *dev_id)
 	return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
 }
 
+/*
+ * ata_id_is_lba_capacity_ok() performs a sanity check on
+ * the claimed LBA capacity value for the device.
+ *
+ * Returns 1 if LBA capacity looks sensible, 0 otherwise.
+ *
+ * It is called only once for each device.
+ */
+static inline int ata_id_is_lba_capacity_ok(u16 *id)
+{
+	unsigned long lba_sects, chs_sects, head, tail;
+
+	/* No non-LBA info .. so valid! */
+	if (id[ATA_ID_CYLS] == 0)
+		return 1;
+
+	lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
+
+	/*
+	 * The ATA spec tells large drives to return
+	 * C/H/S = 16383/16/63 independent of their size.
+	 * Some drives can be jumpered to use 15 heads instead of 16.
+	 * Some drives can be jumpered to use 4092 cyls instead of 16383.
+	 */
+	if ((id[ATA_ID_CYLS] == 16383 ||
+	     (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
+	    id[ATA_ID_SECTORS] == 63 &&
+	    (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
+	    (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
+		return 1;
+
+	chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
+
+	/* perform a rough sanity check on lba_sects: within 10% is OK */
+	if (lba_sects - chs_sects < chs_sects/10)
+		return 1;
+
+	/* some drives have the word order reversed */
+	head = (lba_sects >> 16) & 0xffff;
+	tail = lba_sects & 0xffff;
+	lba_sects = head | (tail << 16);
+
+	if (lba_sects - chs_sects < chs_sects/10) {
+		*(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
+		return 1;	/* LBA capacity is (now) good */
+	}
+
+	return 0;	/* LBA capacity value may be bad */
+}
+
+static inline void ata_id_to_hd_driveid(u16 *id)
+{
+#ifdef __BIG_ENDIAN
+	/* accessed in struct hd_driveid as 8-bit values */
+	id[ATA_ID_MAX_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
+	id[ATA_ID_CAPABILITY]	 = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
+	id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
+	id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
+	id[ATA_ID_MULTSECT]	 = __cpu_to_le16(id[ATA_ID_MULTSECT]);
+
+	/* as 32-bit values */
+	*(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
+	*(u32 *)&id[ATA_ID_SPG]		 = ata_id_u32(id, ATA_ID_SPG);
+
+	/* as 64-bit value */
+	*(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
+		ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
+#endif
+}
+
 static inline int is_multi_taskfile(struct ata_taskfile *tf)
 {
 	return (tf->command == ATA_CMD_READ_MULTI) ||
@@ -682,7 +870,7 @@ static inline int ata_ok(u8 status)
 static inline int lba_28_ok(u64 block, u32 n_block)
 {
 	/* check the ending block number */
-	return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
+	return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
 }
 
 static inline int lba_48_ok(u64 block, u32 n_block)