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Message-ID: <20090407014232.GA5966@havoc.gtf.org>
Date: Mon, 6 Apr 2009 21:42:32 -0400
From: Jeff Garzik <jeff@...zik.org>
To: Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Cc: LKML <linux-kernel@...r.kernel.org>, linux-ide@...r.kernel.org,
axboe@...nel.dk
Subject: [git patches] libata updates
Notables:
- sata_mv fixes
- add definitions for TRIM infrastructure to linux/ata.h
(part of "discard" support, for more SSD/flash-friendly operation)
- block/blk-settings.c: code comment speling fix from Alan
- other misc fixes
Please pull from 'upstream-linus' branch of
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git upstream-linus
to receive the following updates:
block/blk-settings.c | 2 +-
drivers/ata/ahci.c | 17 ++-
drivers/ata/ata_piix.c | 7 +
drivers/ata/pata_octeon_cf.c | 6 +-
drivers/ata/sata_mv.c | 487 ++++++++++++++++++++++++------------------
include/linux/ata.h | 41 ++++
6 files changed, 344 insertions(+), 216 deletions(-)
Alan Cox (1):
pata_artop: typo
David Daney (1):
libata: Remove some redundant casts from pata_octeon_cf.c
David Milburn (1):
libata: ahci enclosure management bios workaround
Mark Lord (8):
sata_mv: revert SoC irq breakage
sata_mv: fix irq mask races
sata_mv: replace 0x1f with ATA_PIO4 (v2)
sata_mv: workaround errata PCI#7
sata_mv: workaround errata SATA#26
sata_mv: cosmetic renames
sata_mv: workaround errata SATA#13
sata_mv: shorten register names
Matthew Wilcox (1):
ata: Add TRIM infrastructure
Tejun Heo (1):
ata_piix: VGN-BX297XP wants the controller power up on suspend
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 59fd05d..69c42ad 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -431,7 +431,7 @@ EXPORT_SYMBOL(blk_queue_segment_boundary);
*
* description:
* set required memory and length alignment for direct dma transactions.
- * this is used when buiding direct io requests for the queue.
+ * this is used when building direct io requests for the queue.
*
**/
void blk_queue_dma_alignment(struct request_queue *q, int mask)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 788bba2..6ca4bc0 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -78,6 +78,7 @@ static ssize_t ahci_led_store(struct ata_port *ap, const char *buf,
static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
ssize_t size);
#define MAX_SLOTS 8
+#define MAX_RETRY 15
enum {
AHCI_PCI_BAR = 5,
@@ -1115,6 +1116,8 @@ static void ahci_start_port(struct ata_port *ap)
struct ahci_port_priv *pp = ap->private_data;
struct ata_link *link;
struct ahci_em_priv *emp;
+ ssize_t rc;
+ int i;
/* enable FIS reception */
ahci_start_fis_rx(ap);
@@ -1126,7 +1129,17 @@ static void ahci_start_port(struct ata_port *ap)
if (ap->flags & ATA_FLAG_EM) {
ata_for_each_link(link, ap, EDGE) {
emp = &pp->em_priv[link->pmp];
- ahci_transmit_led_message(ap, emp->led_state, 4);
+
+ /* EM Transmit bit maybe busy during init */
+ for (i = 0; i < MAX_RETRY; i++) {
+ rc = ahci_transmit_led_message(ap,
+ emp->led_state,
+ 4);
+ if (rc == -EBUSY)
+ udelay(100);
+ else
+ break;
+ }
}
}
@@ -1331,7 +1344,7 @@ static ssize_t ahci_transmit_led_message(struct ata_port *ap, u32 state,
em_ctl = readl(mmio + HOST_EM_CTL);
if (em_ctl & EM_CTL_TM) {
spin_unlock_irqrestore(ap->lock, flags);
- return -EINVAL;
+ return -EBUSY;
}
/*
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index e5cbe80..942d14a 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1053,6 +1053,13 @@ static int piix_broken_suspend(void)
DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
},
},
+ {
+ .ident = "VGN-BX297XP",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"),
+ },
+ },
{ } /* terminate list */
};
diff --git a/drivers/ata/pata_octeon_cf.c b/drivers/ata/pata_octeon_cf.c
index efe2c19..8d9343a 100644
--- a/drivers/ata/pata_octeon_cf.c
+++ b/drivers/ata/pata_octeon_cf.c
@@ -503,7 +503,7 @@ static void octeon_cf_dma_setup(struct ata_queued_cmd *qc)
struct ata_port *ap = qc->ap;
struct octeon_cf_port *cf_port;
- cf_port = (struct octeon_cf_port *)ap->private_data;
+ cf_port = ap->private_data;
DPRINTK("ENTER\n");
/* issue r/w command */
qc->cursg = qc->sg;
@@ -596,7 +596,7 @@ static unsigned int octeon_cf_dma_finished(struct ata_port *ap,
if (ap->hsm_task_state != HSM_ST_LAST)
return 0;
- cf_port = (struct octeon_cf_port *)ap->private_data;
+ cf_port = ap->private_data;
dma_cfg.u64 = cvmx_read_csr(CVMX_MIO_BOOT_DMA_CFGX(ocd->dma_engine));
if (dma_cfg.s.size != 0xfffff) {
@@ -657,7 +657,7 @@ static irqreturn_t octeon_cf_interrupt(int irq, void *dev_instance)
continue;
ocd = ap->dev->platform_data;
- cf_port = (struct octeon_cf_port *)ap->private_data;
+ cf_port = ap->private_data;
dma_int.u64 =
cvmx_read_csr(CVMX_MIO_BOOT_DMA_INTX(ocd->dma_engine));
dma_cfg.u64 =
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index a377226..fffba9b 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -28,10 +28,6 @@
/*
* sata_mv TODO list:
*
- * --> More errata workarounds for PCI-X.
- *
- * --> Complete a full errata audit for all chipsets to identify others.
- *
* --> Develop a low-power-consumption strategy, and implement it.
*
* --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds.
@@ -44,6 +40,15 @@
* connect two SATA ports.
*/
+/*
+ * 80x1-B2 errata PCI#11:
+ *
+ * Users of the 6041/6081 Rev.B2 chips (current is C0)
+ * should be careful to insert those cards only onto PCI-X bus #0,
+ * and only in device slots 0..7, not higher. The chips may not
+ * work correctly otherwise (note: this is a pretty rare condition).
+ */
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
@@ -64,7 +69,7 @@
#include <linux/libata.h>
#define DRV_NAME "sata_mv"
-#define DRV_VERSION "1.27"
+#define DRV_VERSION "1.28"
/*
* module options
@@ -109,23 +114,23 @@ enum {
* Coalescing defers the interrupt until either the IO_THRESHOLD
* (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
*/
- MV_COAL_REG_BASE = 0x18000,
- MV_IRQ_COAL_CAUSE = (MV_COAL_REG_BASE + 0x08),
+ COAL_REG_BASE = 0x18000,
+ IRQ_COAL_CAUSE = (COAL_REG_BASE + 0x08),
ALL_PORTS_COAL_IRQ = (1 << 4), /* all ports irq event */
- MV_IRQ_COAL_IO_THRESHOLD = (MV_COAL_REG_BASE + 0xcc),
- MV_IRQ_COAL_TIME_THRESHOLD = (MV_COAL_REG_BASE + 0xd0),
+ IRQ_COAL_IO_THRESHOLD = (COAL_REG_BASE + 0xcc),
+ IRQ_COAL_TIME_THRESHOLD = (COAL_REG_BASE + 0xd0),
/*
* Registers for the (unused here) transaction coalescing feature:
*/
- MV_TRAN_COAL_CAUSE_LO = (MV_COAL_REG_BASE + 0x88),
- MV_TRAN_COAL_CAUSE_HI = (MV_COAL_REG_BASE + 0x8c),
+ TRAN_COAL_CAUSE_LO = (COAL_REG_BASE + 0x88),
+ TRAN_COAL_CAUSE_HI = (COAL_REG_BASE + 0x8c),
- MV_SATAHC0_REG_BASE = 0x20000,
- MV_FLASH_CTL_OFS = 0x1046c,
- MV_GPIO_PORT_CTL_OFS = 0x104f0,
- MV_RESET_CFG_OFS = 0x180d8,
+ SATAHC0_REG_BASE = 0x20000,
+ FLASH_CTL = 0x1046c,
+ GPIO_PORT_CTL = 0x104f0,
+ RESET_CFG = 0x180d8,
MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
@@ -180,40 +185,41 @@ enum {
/* PCI interface registers */
- PCI_COMMAND_OFS = 0xc00,
- PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */
+ MV_PCI_COMMAND = 0xc00,
+ MV_PCI_COMMAND_MWRCOM = (1 << 4), /* PCI Master Write Combining */
+ MV_PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */
- PCI_MAIN_CMD_STS_OFS = 0xd30,
+ PCI_MAIN_CMD_STS = 0xd30,
STOP_PCI_MASTER = (1 << 2),
PCI_MASTER_EMPTY = (1 << 3),
GLOB_SFT_RST = (1 << 4),
- MV_PCI_MODE_OFS = 0xd00,
+ MV_PCI_MODE = 0xd00,
MV_PCI_MODE_MASK = 0x30,
MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
MV_PCI_DISC_TIMER = 0xd04,
MV_PCI_MSI_TRIGGER = 0xc38,
MV_PCI_SERR_MASK = 0xc28,
- MV_PCI_XBAR_TMOUT_OFS = 0x1d04,
+ MV_PCI_XBAR_TMOUT = 0x1d04,
MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
MV_PCI_ERR_ATTRIBUTE = 0x1d48,
MV_PCI_ERR_COMMAND = 0x1d50,
- PCI_IRQ_CAUSE_OFS = 0x1d58,
- PCI_IRQ_MASK_OFS = 0x1d5c,
+ PCI_IRQ_CAUSE = 0x1d58,
+ PCI_IRQ_MASK = 0x1d5c,
PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
- PCIE_IRQ_CAUSE_OFS = 0x1900,
- PCIE_IRQ_MASK_OFS = 0x1910,
+ PCIE_IRQ_CAUSE = 0x1900,
+ PCIE_IRQ_MASK = 0x1910,
PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */
/* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */
- PCI_HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
- PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64,
- SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020,
- SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024,
+ PCI_HC_MAIN_IRQ_CAUSE = 0x1d60,
+ PCI_HC_MAIN_IRQ_MASK = 0x1d64,
+ SOC_HC_MAIN_IRQ_CAUSE = 0x20020,
+ SOC_HC_MAIN_IRQ_MASK = 0x20024,
ERR_IRQ = (1 << 0), /* shift by (2 * port #) */
DONE_IRQ = (1 << 1), /* shift by (2 * port #) */
HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
@@ -234,9 +240,9 @@ enum {
HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
/* SATAHC registers */
- HC_CFG_OFS = 0,
+ HC_CFG = 0x00,
- HC_IRQ_CAUSE_OFS = 0x14,
+ HC_IRQ_CAUSE = 0x14,
DMA_IRQ = (1 << 0), /* shift by port # */
HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */
DEV_IRQ = (1 << 8), /* shift by port # */
@@ -248,53 +254,54 @@ enum {
* Coalescing defers the interrupt until either the IO_THRESHOLD
* (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
*/
- HC_IRQ_COAL_IO_THRESHOLD_OFS = 0x000c,
- HC_IRQ_COAL_TIME_THRESHOLD_OFS = 0x0010,
+ HC_IRQ_COAL_IO_THRESHOLD = 0x000c,
+ HC_IRQ_COAL_TIME_THRESHOLD = 0x0010,
- SOC_LED_CTRL_OFS = 0x2c,
+ SOC_LED_CTRL = 0x2c,
SOC_LED_CTRL_BLINK = (1 << 0), /* Active LED blink */
SOC_LED_CTRL_ACT_PRESENCE = (1 << 2), /* Multiplex dev presence */
/* with dev activity LED */
/* Shadow block registers */
- SHD_BLK_OFS = 0x100,
- SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
+ SHD_BLK = 0x100,
+ SHD_CTL_AST = 0x20, /* ofs from SHD_BLK */
/* SATA registers */
- SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
- SATA_ACTIVE_OFS = 0x350,
- SATA_FIS_IRQ_CAUSE_OFS = 0x364,
- SATA_FIS_IRQ_AN = (1 << 9), /* async notification */
+ SATA_STATUS = 0x300, /* ctrl, err regs follow status */
+ SATA_ACTIVE = 0x350,
+ FIS_IRQ_CAUSE = 0x364,
+ FIS_IRQ_CAUSE_AN = (1 << 9), /* async notification */
- LTMODE_OFS = 0x30c,
+ LTMODE = 0x30c, /* requires read-after-write */
LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */
+ PHY_MODE2 = 0x330,
PHY_MODE3 = 0x310,
- PHY_MODE4 = 0x314,
+
+ PHY_MODE4 = 0x314, /* requires read-after-write */
PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */
PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */
PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */
PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */
- PHY_MODE2 = 0x330,
- SATA_IFCTL_OFS = 0x344,
- SATA_TESTCTL_OFS = 0x348,
- SATA_IFSTAT_OFS = 0x34c,
- VENDOR_UNIQUE_FIS_OFS = 0x35c,
+ SATA_IFCTL = 0x344,
+ SATA_TESTCTL = 0x348,
+ SATA_IFSTAT = 0x34c,
+ VENDOR_UNIQUE_FIS = 0x35c,
- FISCFG_OFS = 0x360,
+ FISCFG = 0x360,
FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */
FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */
MV5_PHY_MODE = 0x74,
- MV5_LTMODE_OFS = 0x30,
- MV5_PHY_CTL_OFS = 0x0C,
- SATA_INTERFACE_CFG_OFS = 0x050,
+ MV5_LTMODE = 0x30,
+ MV5_PHY_CTL = 0x0C,
+ SATA_IFCFG = 0x050,
MV_M2_PREAMP_MASK = 0x7e0,
/* Port registers */
- EDMA_CFG_OFS = 0,
+ EDMA_CFG = 0,
EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */
EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */
EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
@@ -303,8 +310,8 @@ enum {
EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */
EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */
- EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
- EDMA_ERR_IRQ_MASK_OFS = 0xc,
+ EDMA_ERR_IRQ_CAUSE = 0x8,
+ EDMA_ERR_IRQ_MASK = 0xc,
EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */
EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */
EDMA_ERR_DEV = (1 << 2), /* device error */
@@ -373,36 +380,36 @@ enum {
EDMA_ERR_INTRL_PAR |
EDMA_ERR_IORDY,
- EDMA_REQ_Q_BASE_HI_OFS = 0x10,
- EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
+ EDMA_REQ_Q_BASE_HI = 0x10,
+ EDMA_REQ_Q_IN_PTR = 0x14, /* also contains BASE_LO */
- EDMA_REQ_Q_OUT_PTR_OFS = 0x18,
+ EDMA_REQ_Q_OUT_PTR = 0x18,
EDMA_REQ_Q_PTR_SHIFT = 5,
- EDMA_RSP_Q_BASE_HI_OFS = 0x1c,
- EDMA_RSP_Q_IN_PTR_OFS = 0x20,
- EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */
+ EDMA_RSP_Q_BASE_HI = 0x1c,
+ EDMA_RSP_Q_IN_PTR = 0x20,
+ EDMA_RSP_Q_OUT_PTR = 0x24, /* also contains BASE_LO */
EDMA_RSP_Q_PTR_SHIFT = 3,
- EDMA_CMD_OFS = 0x28, /* EDMA command register */
+ EDMA_CMD = 0x28, /* EDMA command register */
EDMA_EN = (1 << 0), /* enable EDMA */
EDMA_DS = (1 << 1), /* disable EDMA; self-negated */
EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */
- EDMA_STATUS_OFS = 0x30, /* EDMA engine status */
+ EDMA_STATUS = 0x30, /* EDMA engine status */
EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */
EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */
- EDMA_IORDY_TMOUT_OFS = 0x34,
- EDMA_ARB_CFG_OFS = 0x38,
+ EDMA_IORDY_TMOUT = 0x34,
+ EDMA_ARB_CFG = 0x38,
- EDMA_HALTCOND_OFS = 0x60, /* GenIIe halt conditions */
- EDMA_UNKNOWN_RSVD_OFS = 0x6C, /* GenIIe unknown/reserved */
+ EDMA_HALTCOND = 0x60, /* GenIIe halt conditions */
+ EDMA_UNKNOWN_RSVD = 0x6C, /* GenIIe unknown/reserved */
- BMDMA_CMD_OFS = 0x224, /* bmdma command register */
- BMDMA_STATUS_OFS = 0x228, /* bmdma status register */
- BMDMA_PRD_LOW_OFS = 0x22c, /* bmdma PRD addr 31:0 */
- BMDMA_PRD_HIGH_OFS = 0x230, /* bmdma PRD addr 63:32 */
+ BMDMA_CMD = 0x224, /* bmdma command register */
+ BMDMA_STATUS = 0x228, /* bmdma status register */
+ BMDMA_PRD_LOW = 0x22c, /* bmdma PRD addr 31:0 */
+ BMDMA_PRD_HIGH = 0x230, /* bmdma PRD addr 63:32 */
/* Host private flags (hp_flags) */
MV_HP_FLAG_MSI = (1 << 0),
@@ -534,8 +541,8 @@ struct mv_host_priv {
void __iomem *base;
void __iomem *main_irq_cause_addr;
void __iomem *main_irq_mask_addr;
- u32 irq_cause_ofs;
- u32 irq_mask_ofs;
+ u32 irq_cause_offset;
+ u32 irq_mask_offset;
u32 unmask_all_irqs;
/*
* These consistent DMA memory pools give us guaranteed
@@ -694,49 +701,49 @@ static struct ata_port_operations mv_iie_ops = {
static const struct ata_port_info mv_port_info[] = {
{ /* chip_504x */
.flags = MV_GEN_I_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv5_ops,
},
{ /* chip_508x */
.flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv5_ops,
},
{ /* chip_5080 */
.flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv5_ops,
},
{ /* chip_604x */
.flags = MV_GEN_II_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv6_ops,
},
{ /* chip_608x */
.flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv6_ops,
},
{ /* chip_6042 */
.flags = MV_GEN_IIE_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv_iie_ops,
},
{ /* chip_7042 */
.flags = MV_GEN_IIE_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv_iie_ops,
},
{ /* chip_soc */
.flags = MV_GEN_IIE_FLAGS,
- .pio_mask = 0x1f, /* pio0-4 */
+ .pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &mv_iie_ops,
},
@@ -840,7 +847,7 @@ static inline unsigned int mv_hardport_from_port(unsigned int port)
static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
{
- return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
+ return (base + SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
}
static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
@@ -895,10 +902,10 @@ static void mv_save_cached_regs(struct ata_port *ap)
void __iomem *port_mmio = mv_ap_base(ap);
struct mv_port_priv *pp = ap->private_data;
- pp->cached.fiscfg = readl(port_mmio + FISCFG_OFS);
- pp->cached.ltmode = readl(port_mmio + LTMODE_OFS);
- pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND_OFS);
- pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD_OFS);
+ pp->cached.fiscfg = readl(port_mmio + FISCFG);
+ pp->cached.ltmode = readl(port_mmio + LTMODE);
+ pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND);
+ pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD);
}
/**
@@ -913,8 +920,26 @@ static void mv_save_cached_regs(struct ata_port *ap)
static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new)
{
if (new != *old) {
+ unsigned long laddr;
*old = new;
- writel(new, addr);
+ /*
+ * Workaround for 88SX60x1-B2 FEr SATA#13:
+ * Read-after-write is needed to prevent generating 64-bit
+ * write cycles on the PCI bus for SATA interface registers
+ * at offsets ending in 0x4 or 0xc.
+ *
+ * Looks like a lot of fuss, but it avoids an unnecessary
+ * +1 usec read-after-write delay for unaffected registers.
+ */
+ laddr = (long)addr & 0xffff;
+ if (laddr >= 0x300 && laddr <= 0x33c) {
+ laddr &= 0x000f;
+ if (laddr == 0x4 || laddr == 0xc) {
+ writelfl(new, addr); /* read after write */
+ return;
+ }
+ }
+ writel(new, addr); /* unaffected by the errata */
}
}
@@ -931,10 +956,10 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
WARN_ON(pp->crqb_dma & 0x3ff);
- writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
+ writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI);
writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
- port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
- writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
+ port_mmio + EDMA_REQ_Q_IN_PTR);
+ writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR);
/*
* initialize response queue
@@ -943,10 +968,10 @@ static void mv_set_edma_ptrs(void __iomem *port_mmio,
index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT;
WARN_ON(pp->crpb_dma & 0xff);
- writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
- writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
+ writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI);
+ writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR);
writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
- port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
+ port_mmio + EDMA_RSP_Q_OUT_PTR);
}
static void mv_write_main_irq_mask(u32 mask, struct mv_host_priv *hpriv)
@@ -1004,15 +1029,15 @@ static void mv_clear_and_enable_port_irqs(struct ata_port *ap,
u32 hc_irq_cause;
/* clear EDMA event indicators, if any */
- writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
/* clear pending irq events */
hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport);
- writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
+ writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE);
/* clear FIS IRQ Cause */
if (IS_GEN_IIE(hpriv))
- writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
+ writelfl(0, port_mmio + FIS_IRQ_CAUSE);
mv_enable_port_irqs(ap, port_irqs);
}
@@ -1048,10 +1073,10 @@ static void mv_set_irq_coalescing(struct ata_host *host,
* GEN_II/GEN_IIE with dual host controllers:
* one set of global thresholds for the entire chip.
*/
- writel(clks, mmio + MV_IRQ_COAL_TIME_THRESHOLD);
- writel(count, mmio + MV_IRQ_COAL_IO_THRESHOLD);
+ writel(clks, mmio + IRQ_COAL_TIME_THRESHOLD);
+ writel(count, mmio + IRQ_COAL_IO_THRESHOLD);
/* clear leftover coal IRQ bit */
- writel(~ALL_PORTS_COAL_IRQ, mmio + MV_IRQ_COAL_CAUSE);
+ writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE);
if (count)
coal_enable = ALL_PORTS_COAL_DONE;
clks = count = 0; /* force clearing of regular regs below */
@@ -1061,16 +1086,16 @@ static void mv_set_irq_coalescing(struct ata_host *host,
* All chips: independent thresholds for each HC on the chip.
*/
hc_mmio = mv_hc_base_from_port(mmio, 0);
- writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD_OFS);
- writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD_OFS);
- writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE_OFS);
+ writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD);
+ writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD);
+ writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE);
if (count)
coal_enable |= PORTS_0_3_COAL_DONE;
if (is_dual_hc) {
hc_mmio = mv_hc_base_from_port(mmio, MV_PORTS_PER_HC);
- writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD_OFS);
- writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD_OFS);
- writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE_OFS);
+ writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD);
+ writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD);
+ writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE);
if (count)
coal_enable |= PORTS_4_7_COAL_DONE;
}
@@ -1108,7 +1133,7 @@ static void mv_start_edma(struct ata_port *ap, void __iomem *port_mmio,
mv_set_edma_ptrs(port_mmio, hpriv, pp);
mv_clear_and_enable_port_irqs(ap, port_mmio, DONE_IRQ|ERR_IRQ);
- writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS);
+ writelfl(EDMA_EN, port_mmio + EDMA_CMD);
pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
}
}
@@ -1128,7 +1153,7 @@ static void mv_wait_for_edma_empty_idle(struct ata_port *ap)
* as a rough guess at what even more drives might require.
*/
for (i = 0; i < timeout; ++i) {
- u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS);
+ u32 edma_stat = readl(port_mmio + EDMA_STATUS);
if ((edma_stat & empty_idle) == empty_idle)
break;
udelay(per_loop);
@@ -1148,11 +1173,11 @@ static int mv_stop_edma_engine(void __iomem *port_mmio)
int i;
/* Disable eDMA. The disable bit auto clears. */
- writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
+ writelfl(EDMA_DS, port_mmio + EDMA_CMD);
/* Wait for the chip to confirm eDMA is off. */
for (i = 10000; i > 0; i--) {
- u32 reg = readl(port_mmio + EDMA_CMD_OFS);
+ u32 reg = readl(port_mmio + EDMA_CMD);
if (!(reg & EDMA_EN))
return 0;
udelay(10);
@@ -1262,10 +1287,10 @@ static unsigned int mv_scr_offset(unsigned int sc_reg_in)
case SCR_STATUS:
case SCR_CONTROL:
case SCR_ERROR:
- ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
+ ofs = SATA_STATUS + (sc_reg_in * sizeof(u32));
break;
case SCR_ACTIVE:
- ofs = SATA_ACTIVE_OFS; /* active is not with the others */
+ ofs = SATA_ACTIVE; /* active is not with the others */
break;
default:
ofs = 0xffffffffU;
@@ -1290,7 +1315,25 @@ static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
unsigned int ofs = mv_scr_offset(sc_reg_in);
if (ofs != 0xffffffffU) {
- writelfl(val, mv_ap_base(link->ap) + ofs);
+ void __iomem *addr = mv_ap_base(link->ap) + ofs;
+ if (sc_reg_in == SCR_CONTROL) {
+ /*
+ * Workaround for 88SX60x1 FEr SATA#26:
+ *
+ * COMRESETs have to take care not to accidently
+ * put the drive to sleep when writing SCR_CONTROL.
+ * Setting bits 12..15 prevents this problem.
+ *
+ * So if we see an outbound COMMRESET, set those bits.
+ * Ditto for the followup write that clears the reset.
+ *
+ * The proprietary driver does this for
+ * all chip versions, and so do we.
+ */
+ if ((val & 0xf) == 1 || (readl(addr) & 0xf) == 1)
+ val |= 0xf000;
+ }
+ writelfl(val, addr);
return 0;
} else
return -EINVAL;
@@ -1368,9 +1411,9 @@ static void mv_config_fbs(struct ata_port *ap, int want_ncq, int want_fbs)
}
port_mmio = mv_ap_base(ap);
- mv_write_cached_reg(port_mmio + FISCFG_OFS, old_fiscfg, fiscfg);
- mv_write_cached_reg(port_mmio + LTMODE_OFS, old_ltmode, ltmode);
- mv_write_cached_reg(port_mmio + EDMA_HALTCOND_OFS, old_haltcond, haltcond);
+ mv_write_cached_reg(port_mmio + FISCFG, old_fiscfg, fiscfg);
+ mv_write_cached_reg(port_mmio + LTMODE, old_ltmode, ltmode);
+ mv_write_cached_reg(port_mmio + EDMA_HALTCOND, old_haltcond, haltcond);
}
static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
@@ -1379,13 +1422,13 @@ static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
u32 old, new;
/* workaround for 88SX60x1 FEr SATA#25 (part 1) */
- old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS);
+ old = readl(hpriv->base + GPIO_PORT_CTL);
if (want_ncq)
new = old | (1 << 22);
else
new = old & ~(1 << 22);
if (new != old)
- writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS);
+ writel(new, hpriv->base + GPIO_PORT_CTL);
}
/**
@@ -1409,7 +1452,7 @@ static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma)
new = *old | 1;
else
new = *old & ~1;
- mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD_OFS, old, new);
+ mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD, old, new);
}
/*
@@ -1437,8 +1480,8 @@ static void mv_soc_led_blink_enable(struct ata_port *ap)
return;
hpriv->hp_flags |= MV_HP_QUIRK_LED_BLINK_EN;
hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no);
- led_ctrl = readl(hc_mmio + SOC_LED_CTRL_OFS);
- writel(led_ctrl | SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL_OFS);
+ led_ctrl = readl(hc_mmio + SOC_LED_CTRL);
+ writel(led_ctrl | SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL);
}
static void mv_soc_led_blink_disable(struct ata_port *ap)
@@ -1463,8 +1506,8 @@ static void mv_soc_led_blink_disable(struct ata_port *ap)
hpriv->hp_flags &= ~MV_HP_QUIRK_LED_BLINK_EN;
hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no);
- led_ctrl = readl(hc_mmio + SOC_LED_CTRL_OFS);
- writel(led_ctrl & ~SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL_OFS);
+ led_ctrl = readl(hc_mmio + SOC_LED_CTRL);
+ writel(led_ctrl & ~SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL);
}
static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma)
@@ -1528,7 +1571,7 @@ static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma)
pp->pp_flags |= MV_PP_FLAG_NCQ_EN;
}
- writelfl(cfg, port_mmio + EDMA_CFG_OFS);
+ writelfl(cfg, port_mmio + EDMA_CFG);
}
static void mv_port_free_dma_mem(struct ata_port *ap)
@@ -1575,6 +1618,7 @@ static int mv_port_start(struct ata_port *ap)
struct device *dev = ap->host->dev;
struct mv_host_priv *hpriv = ap->host->private_data;
struct mv_port_priv *pp;
+ unsigned long flags;
int tag;
pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
@@ -1610,8 +1654,12 @@ static int mv_port_start(struct ata_port *ap)
pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0];
}
}
+
+ spin_lock_irqsave(ap->lock, flags);
mv_save_cached_regs(ap);
mv_edma_cfg(ap, 0, 0);
+ spin_unlock_irqrestore(ap->lock, flags);
+
return 0;
out_port_free_dma_mem:
@@ -1630,8 +1678,12 @@ out_port_free_dma_mem:
*/
static void mv_port_stop(struct ata_port *ap)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(ap->lock, flags);
mv_stop_edma(ap);
mv_enable_port_irqs(ap, 0);
+ spin_unlock_irqrestore(ap->lock, flags);
mv_port_free_dma_mem(ap);
}
@@ -1749,13 +1801,13 @@ static void mv_bmdma_setup(struct ata_queued_cmd *qc)
mv_fill_sg(qc);
/* clear all DMA cmd bits */
- writel(0, port_mmio + BMDMA_CMD_OFS);
+ writel(0, port_mmio + BMDMA_CMD);
/* load PRD table addr. */
writel((pp->sg_tbl_dma[qc->tag] >> 16) >> 16,
- port_mmio + BMDMA_PRD_HIGH_OFS);
+ port_mmio + BMDMA_PRD_HIGH);
writelfl(pp->sg_tbl_dma[qc->tag],
- port_mmio + BMDMA_PRD_LOW_OFS);
+ port_mmio + BMDMA_PRD_LOW);
/* issue r/w command */
ap->ops->sff_exec_command(ap, &qc->tf);
@@ -1776,7 +1828,7 @@ static void mv_bmdma_start(struct ata_queued_cmd *qc)
u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START;
/* start host DMA transaction */
- writelfl(cmd, port_mmio + BMDMA_CMD_OFS);
+ writelfl(cmd, port_mmio + BMDMA_CMD);
}
/**
@@ -1795,9 +1847,9 @@ static void mv_bmdma_stop(struct ata_queued_cmd *qc)
u32 cmd;
/* clear start/stop bit */
- cmd = readl(port_mmio + BMDMA_CMD_OFS);
+ cmd = readl(port_mmio + BMDMA_CMD);
cmd &= ~ATA_DMA_START;
- writelfl(cmd, port_mmio + BMDMA_CMD_OFS);
+ writelfl(cmd, port_mmio + BMDMA_CMD);
/* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
ata_sff_dma_pause(ap);
@@ -1821,7 +1873,7 @@ static u8 mv_bmdma_status(struct ata_port *ap)
* Other bits are valid only if ATA_DMA_ACTIVE==0,
* and the ATA_DMA_INTR bit doesn't exist.
*/
- reg = readl(port_mmio + BMDMA_STATUS_OFS);
+ reg = readl(port_mmio + BMDMA_STATUS);
if (reg & ATA_DMA_ACTIVE)
status = ATA_DMA_ACTIVE;
else
@@ -2029,28 +2081,28 @@ static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords)
int i, timeout = 200, final_word = nwords - 1;
/* Initiate FIS transmission mode */
- old_ifctl = readl(port_mmio + SATA_IFCTL_OFS);
+ old_ifctl = readl(port_mmio + SATA_IFCTL);
ifctl = 0x100 | (old_ifctl & 0xf);
- writelfl(ifctl, port_mmio + SATA_IFCTL_OFS);
+ writelfl(ifctl, port_mmio + SATA_IFCTL);
/* Send all words of the FIS except for the final word */
for (i = 0; i < final_word; ++i)
- writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS_OFS);
+ writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS);
/* Flag end-of-transmission, and then send the final word */
- writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL_OFS);
- writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS_OFS);
+ writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL);
+ writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS);
/*
* Wait for FIS transmission to complete.
* This typically takes just a single iteration.
*/
do {
- ifstat = readl(port_mmio + SATA_IFSTAT_OFS);
+ ifstat = readl(port_mmio + SATA_IFSTAT);
} while (!(ifstat & 0x1000) && --timeout);
/* Restore original port configuration */
- writelfl(old_ifctl, port_mmio + SATA_IFCTL_OFS);
+ writelfl(old_ifctl, port_mmio + SATA_IFCTL);
/* See if it worked */
if ((ifstat & 0x3000) != 0x1000) {
@@ -2148,7 +2200,7 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
/* Write the request in pointer to kick the EDMA to life */
writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index,
- port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
+ port_mmio + EDMA_REQ_Q_IN_PTR);
return 0;
case ATA_PROT_PIO:
@@ -2259,7 +2311,7 @@ static unsigned int mv_get_err_pmp_map(struct ata_port *ap)
{
void __iomem *port_mmio = mv_ap_base(ap);
- return readl(port_mmio + SATA_TESTCTL_OFS) >> 16;
+ return readl(port_mmio + SATA_TESTCTL) >> 16;
}
static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map)
@@ -2292,9 +2344,9 @@ static int mv_req_q_empty(struct ata_port *ap)
void __iomem *port_mmio = mv_ap_base(ap);
u32 in_ptr, out_ptr;
- in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS)
+ in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR)
>> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
- out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
+ out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR)
>> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
return (in_ptr == out_ptr); /* 1 == queue_is_empty */
}
@@ -2456,12 +2508,12 @@ static void mv_err_intr(struct ata_port *ap)
sata_scr_read(&ap->link, SCR_ERROR, &serr);
sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
- edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE);
if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
- fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
- writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
+ fis_cause = readl(port_mmio + FIS_IRQ_CAUSE);
+ writelfl(~fis_cause, port_mmio + FIS_IRQ_CAUSE);
}
- writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE);
if (edma_err_cause & EDMA_ERR_DEV) {
/*
@@ -2479,7 +2531,7 @@ static void mv_err_intr(struct ata_port *ap)
if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause);
- if (fis_cause & SATA_FIS_IRQ_AN) {
+ if (fis_cause & FIS_IRQ_CAUSE_AN) {
u32 ec = edma_err_cause &
~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT);
sata_async_notification(ap);
@@ -2581,7 +2633,7 @@ static void mv_process_crpb_response(struct ata_port *ap,
u16 edma_status = le16_to_cpu(response->flags);
/*
* edma_status from a response queue entry:
- * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only).
+ * LSB is from EDMA_ERR_IRQ_CAUSE (non-NCQ only).
* MSB is saved ATA status from command completion.
*/
if (!ncq_enabled) {
@@ -2613,7 +2665,7 @@ static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp
int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN);
/* Get the hardware queue position index */
- in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
+ in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR)
>> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
/* Process new responses from since the last time we looked */
@@ -2638,7 +2690,7 @@ static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp
if (work_done)
writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) |
(pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT),
- port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
+ port_mmio + EDMA_RSP_Q_OUT_PTR);
}
static void mv_port_intr(struct ata_port *ap, u32 port_cause)
@@ -2695,7 +2747,7 @@ static int mv_host_intr(struct ata_host *host, u32 main_irq_cause)
/* If asserted, clear the "all ports" IRQ coalescing bit */
if (main_irq_cause & ALL_PORTS_COAL_DONE)
- writel(~ALL_PORTS_COAL_IRQ, mmio + MV_IRQ_COAL_CAUSE);
+ writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE);
for (port = 0; port < hpriv->n_ports; port++) {
struct ata_port *ap = host->ports[port];
@@ -2739,7 +2791,7 @@ static int mv_host_intr(struct ata_host *host, u32 main_irq_cause)
ack_irqs |= (DMA_IRQ | DEV_IRQ) << p;
}
hc_mmio = mv_hc_base_from_port(mmio, port);
- writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE_OFS);
+ writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE);
handled = 1;
}
/*
@@ -2761,7 +2813,7 @@ static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
unsigned int i, err_mask, printed = 0;
u32 err_cause;
- err_cause = readl(mmio + hpriv->irq_cause_ofs);
+ err_cause = readl(mmio + hpriv->irq_cause_offset);
dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n",
err_cause);
@@ -2769,7 +2821,7 @@ static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
DPRINTK("All regs @ PCI error\n");
mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev));
- writelfl(0, mmio + hpriv->irq_cause_ofs);
+ writelfl(0, mmio + hpriv->irq_cause_offset);
for (i = 0; i < host->n_ports; i++) {
ap = host->ports[i];
@@ -2906,7 +2958,7 @@ static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio)
static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
{
- writel(0x0fcfffff, mmio + MV_FLASH_CTL_OFS);
+ writel(0x0fcfffff, mmio + FLASH_CTL);
}
static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
@@ -2925,7 +2977,7 @@ static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
{
u32 tmp;
- writel(0, mmio + MV_GPIO_PORT_CTL_OFS);
+ writel(0, mmio + GPIO_PORT_CTL);
/* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
@@ -2943,14 +2995,14 @@ static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
if (fix_apm_sq) {
- tmp = readl(phy_mmio + MV5_LTMODE_OFS);
+ tmp = readl(phy_mmio + MV5_LTMODE);
tmp |= (1 << 19);
- writel(tmp, phy_mmio + MV5_LTMODE_OFS);
+ writel(tmp, phy_mmio + MV5_LTMODE);
- tmp = readl(phy_mmio + MV5_PHY_CTL_OFS);
+ tmp = readl(phy_mmio + MV5_PHY_CTL);
tmp &= ~0x3;
tmp |= 0x1;
- writel(tmp, phy_mmio + MV5_PHY_CTL_OFS);
+ writel(tmp, phy_mmio + MV5_PHY_CTL);
}
tmp = readl(phy_mmio + MV5_PHY_MODE);
@@ -2971,7 +3023,7 @@ static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
mv_reset_channel(hpriv, mmio, port);
ZERO(0x028); /* command */
- writel(0x11f, port_mmio + EDMA_CFG_OFS);
+ writel(0x11f, port_mmio + EDMA_CFG);
ZERO(0x004); /* timer */
ZERO(0x008); /* irq err cause */
ZERO(0x00c); /* irq err mask */
@@ -2982,7 +3034,7 @@ static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
ZERO(0x024); /* respq outp */
ZERO(0x020); /* respq inp */
ZERO(0x02c); /* test control */
- writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS);
+ writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
}
#undef ZERO
@@ -3028,16 +3080,16 @@ static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio)
struct mv_host_priv *hpriv = host->private_data;
u32 tmp;
- tmp = readl(mmio + MV_PCI_MODE_OFS);
+ tmp = readl(mmio + MV_PCI_MODE);
tmp &= 0xff00ffff;
- writel(tmp, mmio + MV_PCI_MODE_OFS);
+ writel(tmp, mmio + MV_PCI_MODE);
ZERO(MV_PCI_DISC_TIMER);
ZERO(MV_PCI_MSI_TRIGGER);
- writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS);
+ writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
ZERO(MV_PCI_SERR_MASK);
- ZERO(hpriv->irq_cause_ofs);
- ZERO(hpriv->irq_mask_ofs);
+ ZERO(hpriv->irq_cause_offset);
+ ZERO(hpriv->irq_mask_offset);
ZERO(MV_PCI_ERR_LOW_ADDRESS);
ZERO(MV_PCI_ERR_HIGH_ADDRESS);
ZERO(MV_PCI_ERR_ATTRIBUTE);
@@ -3051,10 +3103,10 @@ static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
mv5_reset_flash(hpriv, mmio);
- tmp = readl(mmio + MV_GPIO_PORT_CTL_OFS);
+ tmp = readl(mmio + GPIO_PORT_CTL);
tmp &= 0x3;
tmp |= (1 << 5) | (1 << 6);
- writel(tmp, mmio + MV_GPIO_PORT_CTL_OFS);
+ writel(tmp, mmio + GPIO_PORT_CTL);
}
/**
@@ -3069,7 +3121,7 @@ static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
unsigned int n_hc)
{
- void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS;
+ void __iomem *reg = mmio + PCI_MAIN_CMD_STS;
int i, rc = 0;
u32 t;
@@ -3127,7 +3179,7 @@ static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
void __iomem *port_mmio;
u32 tmp;
- tmp = readl(mmio + MV_RESET_CFG_OFS);
+ tmp = readl(mmio + RESET_CFG);
if ((tmp & (1 << 0)) == 0) {
hpriv->signal[idx].amps = 0x7 << 8;
hpriv->signal[idx].pre = 0x1 << 5;
@@ -3143,7 +3195,7 @@ static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
{
- writel(0x00000060, mmio + MV_GPIO_PORT_CTL_OFS);
+ writel(0x00000060, mmio + GPIO_PORT_CTL);
}
static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
@@ -3201,6 +3253,7 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
* Workaround for 60x1-B2 errata SATA#13:
* Any write to PHY_MODE4 (above) may corrupt PHY_MODE3,
* so we must always rewrite PHY_MODE3 after PHY_MODE4.
+ * Or ensure we use writelfl() when writing PHY_MODE4.
*/
writel(m3, port_mmio + PHY_MODE3);
@@ -3252,7 +3305,7 @@ static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv,
mv_reset_channel(hpriv, mmio, port);
ZERO(0x028); /* command */
- writel(0x101f, port_mmio + EDMA_CFG_OFS);
+ writel(0x101f, port_mmio + EDMA_CFG);
ZERO(0x004); /* timer */
ZERO(0x008); /* irq err cause */
ZERO(0x00c); /* irq err mask */
@@ -3263,7 +3316,7 @@ static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv,
ZERO(0x024); /* respq outp */
ZERO(0x020); /* respq inp */
ZERO(0x02c); /* test control */
- writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS);
+ writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
}
#undef ZERO
@@ -3308,12 +3361,12 @@ static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio)
static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i)
{
- u32 ifcfg = readl(port_mmio + SATA_INTERFACE_CFG_OFS);
+ u32 ifcfg = readl(port_mmio + SATA_IFCFG);
ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */
if (want_gen2i)
ifcfg |= (1 << 7); /* enable gen2i speed */
- writelfl(ifcfg, port_mmio + SATA_INTERFACE_CFG_OFS);
+ writelfl(ifcfg, port_mmio + SATA_IFCFG);
}
static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
@@ -3327,7 +3380,7 @@ static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
* to disable the EDMA engine before doing the EDMA_RESET operation.
*/
mv_stop_edma_engine(port_mmio);
- writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS);
+ writelfl(EDMA_RESET, port_mmio + EDMA_CMD);
if (!IS_GEN_I(hpriv)) {
/* Enable 3.0gb/s link speed: this survives EDMA_RESET */
@@ -3336,11 +3389,11 @@ static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
/*
* Strobing EDMA_RESET here causes a hard reset of the SATA transport,
* link, and physical layers. It resets all SATA interface registers
- * (except for SATA_INTERFACE_CFG), and issues a COMRESET to the dev.
+ * (except for SATA_IFCFG), and issues a COMRESET to the dev.
*/
- writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS);
+ writelfl(EDMA_RESET, port_mmio + EDMA_CMD);
udelay(25); /* allow reset propagation */
- writelfl(0, port_mmio + EDMA_CMD_OFS);
+ writelfl(0, port_mmio + EDMA_CMD);
hpriv->ops->phy_errata(hpriv, mmio, port_no);
@@ -3352,12 +3405,12 @@ static void mv_pmp_select(struct ata_port *ap, int pmp)
{
if (sata_pmp_supported(ap)) {
void __iomem *port_mmio = mv_ap_base(ap);
- u32 reg = readl(port_mmio + SATA_IFCTL_OFS);
+ u32 reg = readl(port_mmio + SATA_IFCTL);
int old = reg & 0xf;
if (old != pmp) {
reg = (reg & ~0xf) | pmp;
- writelfl(reg, port_mmio + SATA_IFCTL_OFS);
+ writelfl(reg, port_mmio + SATA_IFCTL);
}
}
}
@@ -3432,11 +3485,11 @@ static void mv_eh_thaw(struct ata_port *ap)
u32 hc_irq_cause;
/* clear EDMA errors on this port */
- writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
/* clear pending irq events */
hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport);
- writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
+ writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE);
mv_enable_port_irqs(ap, ERR_IRQ);
}
@@ -3455,8 +3508,7 @@ static void mv_eh_thaw(struct ata_port *ap)
*/
static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
{
- void __iomem *shd_base = port_mmio + SHD_BLK_OFS;
- unsigned serr_ofs;
+ void __iomem *serr, *shd_base = port_mmio + SHD_BLK;
/* PIO related setup
*/
@@ -3471,23 +3523,23 @@ static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
port->status_addr =
port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
/* special case: control/altstatus doesn't have ATA_REG_ address */
- port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
+ port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST;
/* unused: */
port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL;
/* Clear any currently outstanding port interrupt conditions */
- serr_ofs = mv_scr_offset(SCR_ERROR);
- writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
- writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+ serr = port_mmio + mv_scr_offset(SCR_ERROR);
+ writelfl(readl(serr), serr);
+ writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
/* unmask all non-transient EDMA error interrupts */
- writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
+ writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK);
VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
- readl(port_mmio + EDMA_CFG_OFS),
- readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
- readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
+ readl(port_mmio + EDMA_CFG),
+ readl(port_mmio + EDMA_ERR_IRQ_CAUSE),
+ readl(port_mmio + EDMA_ERR_IRQ_MASK));
}
static unsigned int mv_in_pcix_mode(struct ata_host *host)
@@ -3498,7 +3550,7 @@ static unsigned int mv_in_pcix_mode(struct ata_host *host)
if (IS_SOC(hpriv) || !IS_PCIE(hpriv))
return 0; /* not PCI-X capable */
- reg = readl(mmio + MV_PCI_MODE_OFS);
+ reg = readl(mmio + MV_PCI_MODE);
if ((reg & MV_PCI_MODE_MASK) == 0)
return 0; /* conventional PCI mode */
return 1; /* chip is in PCI-X mode */
@@ -3511,13 +3563,25 @@ static int mv_pci_cut_through_okay(struct ata_host *host)
u32 reg;
if (!mv_in_pcix_mode(host)) {
- reg = readl(mmio + PCI_COMMAND_OFS);
- if (reg & PCI_COMMAND_MRDTRIG)
+ reg = readl(mmio + MV_PCI_COMMAND);
+ if (reg & MV_PCI_COMMAND_MRDTRIG)
return 0; /* not okay */
}
return 1; /* okay */
}
+static void mv_60x1b2_errata_pci7(struct ata_host *host)
+{
+ struct mv_host_priv *hpriv = host->private_data;
+ void __iomem *mmio = hpriv->base;
+
+ /* workaround for 60x1-B2 errata PCI#7 */
+ if (mv_in_pcix_mode(host)) {
+ u32 reg = readl(mmio + MV_PCI_COMMAND);
+ writelfl(reg & ~MV_PCI_COMMAND_MWRCOM, mmio + MV_PCI_COMMAND);
+ }
+}
+
static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
{
struct pci_dev *pdev = to_pci_dev(host->dev);
@@ -3571,6 +3635,7 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
switch (pdev->revision) {
case 0x7:
+ mv_60x1b2_errata_pci7(host);
hp_flags |= MV_HP_ERRATA_60X1B2;
break;
case 0x9:
@@ -3647,12 +3712,12 @@ static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
hpriv->hp_flags = hp_flags;
if (hp_flags & MV_HP_PCIE) {
- hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS;
- hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS;
+ hpriv->irq_cause_offset = PCIE_IRQ_CAUSE;
+ hpriv->irq_mask_offset = PCIE_IRQ_MASK;
hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS;
} else {
- hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS;
- hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS;
+ hpriv->irq_cause_offset = PCI_IRQ_CAUSE;
+ hpriv->irq_mask_offset = PCI_IRQ_MASK;
hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS;
}
@@ -3681,11 +3746,11 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
goto done;
if (IS_SOC(hpriv)) {
- hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS;
- hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK_OFS;
+ hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE;
+ hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK;
} else {
- hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS;
- hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK_OFS;
+ hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE;
+ hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK;
}
/* initialize shadow irq mask with register's value */
@@ -3727,18 +3792,20 @@ static int mv_init_host(struct ata_host *host, unsigned int board_idx)
VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
"(before clear)=0x%08x\n", hc,
- readl(hc_mmio + HC_CFG_OFS),
- readl(hc_mmio + HC_IRQ_CAUSE_OFS));
+ readl(hc_mmio + HC_CFG),
+ readl(hc_mmio + HC_IRQ_CAUSE));
/* Clear any currently outstanding hc interrupt conditions */
- writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
+ writelfl(0, hc_mmio + HC_IRQ_CAUSE);
}
- /* Clear any currently outstanding host interrupt conditions */
- writelfl(0, mmio + hpriv->irq_cause_ofs);
+ if (!IS_SOC(hpriv)) {
+ /* Clear any currently outstanding host interrupt conditions */
+ writelfl(0, mmio + hpriv->irq_cause_offset);
- /* and unmask interrupt generation for host regs */
- writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs);
+ /* and unmask interrupt generation for host regs */
+ writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_offset);
+ }
/*
* enable only global host interrupts for now.
@@ -3844,7 +3911,7 @@ static int mv_platform_probe(struct platform_device *pdev)
host->iomap = NULL;
hpriv->base = devm_ioremap(&pdev->dev, res->start,
res->end - res->start + 1);
- hpriv->base -= MV_SATAHC0_REG_BASE;
+ hpriv->base -= SATAHC0_REG_BASE;
/*
* (Re-)program MBUS remapping windows if we are asked to.
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 6617c9f..cb79b7a 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -29,6 +29,8 @@
#ifndef __LINUX_ATA_H__
#define __LINUX_ATA_H__
+#include <linux/kernel.h>
+#include <linux/string.h>
#include <linux/types.h>
#include <asm/byteorder.h>
@@ -91,6 +93,7 @@ enum {
ATA_ID_CFA_POWER = 160,
ATA_ID_CFA_KEY_MGMT = 162,
ATA_ID_CFA_MODES = 163,
+ ATA_ID_DATA_SET_MGMT = 169,
ATA_ID_ROT_SPEED = 217,
ATA_ID_PIO4 = (1 << 1),
@@ -248,6 +251,7 @@ enum {
ATA_CMD_SMART = 0xB0,
ATA_CMD_MEDIA_LOCK = 0xDE,
ATA_CMD_MEDIA_UNLOCK = 0xDF,
+ ATA_CMD_DSM = 0x06,
/* marked obsolete in the ATA/ATAPI-7 spec */
ATA_CMD_RESTORE = 0x10,
@@ -321,6 +325,9 @@ enum {
ATA_SMART_READ_VALUES = 0xD0,
ATA_SMART_READ_THRESHOLDS = 0xD1,
+ /* feature values for Data Set Management */
+ ATA_DSM_TRIM = 0x01,
+
/* password used in LBA Mid / LBA High for executing SMART commands */
ATA_SMART_LBAM_PASS = 0x4F,
ATA_SMART_LBAH_PASS = 0xC2,
@@ -723,6 +730,14 @@ static inline int ata_id_has_unload(const u16 *id)
return 0;
}
+static inline int ata_id_has_trim(const u16 *id)
+{
+ if (ata_id_major_version(id) >= 7 &&
+ (id[ATA_ID_DATA_SET_MGMT] & 1))
+ return 1;
+ return 0;
+}
+
static inline int ata_id_current_chs_valid(const u16 *id)
{
/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
@@ -863,6 +878,32 @@ static inline void ata_id_to_hd_driveid(u16 *id)
#endif
}
+/*
+ * Write up to 'max' LBA Range Entries to the buffer that will cover the
+ * extent from sector to sector + count. This is used for TRIM and for
+ * ADD LBA(S) TO NV CACHE PINNED SET.
+ */
+static inline unsigned ata_set_lba_range_entries(void *_buffer, unsigned max,
+ u64 sector, unsigned long count)
+{
+ __le64 *buffer = _buffer;
+ unsigned i = 0;
+
+ while (i < max) {
+ u64 entry = sector |
+ ((u64)(count > 0xffff ? 0xffff : count) << 48);
+ buffer[i++] = __cpu_to_le64(entry);
+ if (count <= 0xffff)
+ break;
+ count -= 0xffff;
+ sector += 0xffff;
+ }
+
+ max = ALIGN(i * 8, 512);
+ memset(buffer + i, 0, max - i * 8);
+ return max;
+}
+
static inline int is_multi_taskfile(struct ata_taskfile *tf)
{
return (tf->command == ATA_CMD_READ_MULTI) ||
--
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