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-rw-r--r--drivers/ata/sata_mv.c2468
1 files changed, 2468 insertions, 0 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
new file mode 100644
index 0000000..a2915a5
--- /dev/null
+++ b/drivers/ata/sata_mv.c
@@ -0,0 +1,2468 @@
+/*
+ * sata_mv.c - Marvell SATA support
+ *
+ * Copyright 2005: EMC Corporation, all rights reserved.
+ * Copyright 2005 Red Hat, Inc. All rights reserved.
+ *
+ * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/blkdev.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/dma-mapping.h>
+#include <linux/device.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_cmnd.h>
+#include <linux/libata.h>
+#include <asm/io.h>
+
+#define DRV_NAME "sata_mv"
+#define DRV_VERSION "0.7"
+
+enum {
+ /* BAR's are enumerated in terms of pci_resource_start() terms */
+ MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
+ MV_IO_BAR = 2, /* offset 0x18: IO space */
+ MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
+
+ MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
+ MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
+
+ MV_PCI_REG_BASE = 0,
+ MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */
+ MV_IRQ_COAL_CAUSE = (MV_IRQ_COAL_REG_BASE + 0x08),
+ MV_IRQ_COAL_CAUSE_LO = (MV_IRQ_COAL_REG_BASE + 0x88),
+ MV_IRQ_COAL_CAUSE_HI = (MV_IRQ_COAL_REG_BASE + 0x8c),
+ MV_IRQ_COAL_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xcc),
+ MV_IRQ_COAL_TIME_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xd0),
+
+ MV_SATAHC0_REG_BASE = 0x20000,
+ MV_FLASH_CTL = 0x1046c,
+ MV_GPIO_PORT_CTL = 0x104f0,
+ MV_RESET_CFG = 0x180d8,
+
+ MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
+ MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
+ MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
+ MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
+
+ MV_USE_Q_DEPTH = ATA_DEF_QUEUE,
+
+ MV_MAX_Q_DEPTH = 32,
+ MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
+
+ /* CRQB needs alignment on a 1KB boundary. Size == 1KB
+ * CRPB needs alignment on a 256B boundary. Size == 256B
+ * SG count of 176 leads to MV_PORT_PRIV_DMA_SZ == 4KB
+ * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
+ */
+ MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
+ MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
+ MV_MAX_SG_CT = 176,
+ MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
+ MV_PORT_PRIV_DMA_SZ = (MV_CRQB_Q_SZ + MV_CRPB_Q_SZ + MV_SG_TBL_SZ),
+
+ MV_PORTS_PER_HC = 4,
+ /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */
+ MV_PORT_HC_SHIFT = 2,
+ /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */
+ MV_PORT_MASK = 3,
+
+ /* Host Flags */
+ MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
+ MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */
+ MV_COMMON_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+ ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
+ ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING),
+ MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,
+
+ CRQB_FLAG_READ = (1 << 0),
+ CRQB_TAG_SHIFT = 1,
+ CRQB_CMD_ADDR_SHIFT = 8,
+ CRQB_CMD_CS = (0x2 << 11),
+ CRQB_CMD_LAST = (1 << 15),
+
+ CRPB_FLAG_STATUS_SHIFT = 8,
+
+ EPRD_FLAG_END_OF_TBL = (1 << 31),
+
+ /* PCI interface registers */
+
+ PCI_COMMAND_OFS = 0xc00,
+
+ PCI_MAIN_CMD_STS_OFS = 0xd30,
+ STOP_PCI_MASTER = (1 << 2),
+ PCI_MASTER_EMPTY = (1 << 3),
+ GLOB_SFT_RST = (1 << 4),
+
+ MV_PCI_MODE = 0xd00,
+ 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 = 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_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
+
+ HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
+ HC_MAIN_IRQ_MASK_OFS = 0x1d64,
+ PORT0_ERR = (1 << 0), /* shift by port # */
+ PORT0_DONE = (1 << 1), /* shift by port # */
+ HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
+ HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
+ PCI_ERR = (1 << 18),
+ TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */
+ TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */
+ PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
+ GPIO_INT = (1 << 22),
+ SELF_INT = (1 << 23),
+ TWSI_INT = (1 << 24),
+ HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
+ HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE |
+ PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
+ HC_MAIN_RSVD),
+
+ /* SATAHC registers */
+ HC_CFG_OFS = 0,
+
+ HC_IRQ_CAUSE_OFS = 0x14,
+ CRPB_DMA_DONE = (1 << 0), /* shift by port # */
+ HC_IRQ_COAL = (1 << 4), /* IRQ coalescing */
+ DEV_IRQ = (1 << 8), /* shift by port # */
+
+ /* Shadow block registers */
+ SHD_BLK_OFS = 0x100,
+ SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
+
+ /* SATA registers */
+ SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
+ SATA_ACTIVE_OFS = 0x350,
+ PHY_MODE3 = 0x310,
+ PHY_MODE4 = 0x314,
+ PHY_MODE2 = 0x330,
+ MV5_PHY_MODE = 0x74,
+ MV5_LT_MODE = 0x30,
+ MV5_PHY_CTL = 0x0C,
+ SATA_INTERFACE_CTL = 0x050,
+
+ MV_M2_PREAMP_MASK = 0x7e0,
+
+ /* Port registers */
+ EDMA_CFG_OFS = 0,
+ EDMA_CFG_Q_DEPTH = 0, /* queueing disabled */
+ EDMA_CFG_NCQ = (1 << 5),
+ EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
+ EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
+ EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
+
+ EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
+ EDMA_ERR_IRQ_MASK_OFS = 0xc,
+ EDMA_ERR_D_PAR = (1 << 0),
+ EDMA_ERR_PRD_PAR = (1 << 1),
+ EDMA_ERR_DEV = (1 << 2),
+ EDMA_ERR_DEV_DCON = (1 << 3),
+ EDMA_ERR_DEV_CON = (1 << 4),
+ EDMA_ERR_SERR = (1 << 5),
+ EDMA_ERR_SELF_DIS = (1 << 7),
+ EDMA_ERR_BIST_ASYNC = (1 << 8),
+ EDMA_ERR_CRBQ_PAR = (1 << 9),
+ EDMA_ERR_CRPB_PAR = (1 << 10),
+ EDMA_ERR_INTRL_PAR = (1 << 11),
+ EDMA_ERR_IORDY = (1 << 12),
+ EDMA_ERR_LNK_CTRL_RX = (0xf << 13),
+ EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15),
+ EDMA_ERR_LNK_DATA_RX = (0xf << 17),
+ EDMA_ERR_LNK_CTRL_TX = (0x1f << 21),
+ EDMA_ERR_LNK_DATA_TX = (0x1f << 26),
+ EDMA_ERR_TRANS_PROTO = (1 << 31),
+ EDMA_ERR_FATAL = (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
+ EDMA_ERR_DEV_DCON | EDMA_ERR_CRBQ_PAR |
+ EDMA_ERR_CRPB_PAR | EDMA_ERR_INTRL_PAR |
+ EDMA_ERR_IORDY | EDMA_ERR_LNK_CTRL_RX_2 |
+ EDMA_ERR_LNK_DATA_RX |
+ EDMA_ERR_LNK_DATA_TX |
+ EDMA_ERR_TRANS_PROTO),
+
+ EDMA_REQ_Q_BASE_HI_OFS = 0x10,
+ EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
+
+ EDMA_REQ_Q_OUT_PTR_OFS = 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_PTR_SHIFT = 3,
+
+ EDMA_CMD_OFS = 0x28,
+ EDMA_EN = (1 << 0),
+ EDMA_DS = (1 << 1),
+ ATA_RST = (1 << 2),
+
+ EDMA_IORDY_TMOUT = 0x34,
+ EDMA_ARB_CFG = 0x38,
+
+ /* Host private flags (hp_flags) */
+ MV_HP_FLAG_MSI = (1 << 0),
+ MV_HP_ERRATA_50XXB0 = (1 << 1),
+ MV_HP_ERRATA_50XXB2 = (1 << 2),
+ MV_HP_ERRATA_60X1B2 = (1 << 3),
+ MV_HP_ERRATA_60X1C0 = (1 << 4),
+ MV_HP_ERRATA_XX42A0 = (1 << 5),
+ MV_HP_50XX = (1 << 6),
+ MV_HP_GEN_IIE = (1 << 7),
+
+ /* Port private flags (pp_flags) */
+ MV_PP_FLAG_EDMA_EN = (1 << 0),
+ MV_PP_FLAG_EDMA_DS_ACT = (1 << 1),
+};
+
+#define IS_50XX(hpriv) ((hpriv)->hp_flags & MV_HP_50XX)
+#define IS_60XX(hpriv) (((hpriv)->hp_flags & MV_HP_50XX) == 0)
+#define IS_GEN_I(hpriv) IS_50XX(hpriv)
+#define IS_GEN_II(hpriv) IS_60XX(hpriv)
+#define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
+
+enum {
+ /* Our DMA boundary is determined by an ePRD being unable to handle
+ * anything larger than 64KB
+ */
+ MV_DMA_BOUNDARY = 0xffffU,
+
+ EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
+
+ EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
+};
+
+enum chip_type {
+ chip_504x,
+ chip_508x,
+ chip_5080,
+ chip_604x,
+ chip_608x,
+ chip_6042,
+ chip_7042,
+};
+
+/* Command ReQuest Block: 32B */
+struct mv_crqb {
+ __le32 sg_addr;
+ __le32 sg_addr_hi;
+ __le16 ctrl_flags;
+ __le16 ata_cmd[11];
+};
+
+struct mv_crqb_iie {
+ __le32 addr;
+ __le32 addr_hi;
+ __le32 flags;
+ __le32 len;
+ __le32 ata_cmd[4];
+};
+
+/* Command ResPonse Block: 8B */
+struct mv_crpb {
+ __le16 id;
+ __le16 flags;
+ __le32 tmstmp;
+};
+
+/* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
+struct mv_sg {
+ __le32 addr;
+ __le32 flags_size;
+ __le32 addr_hi;
+ __le32 reserved;
+};
+
+struct mv_port_priv {
+ struct mv_crqb *crqb;
+ dma_addr_t crqb_dma;
+ struct mv_crpb *crpb;
+ dma_addr_t crpb_dma;
+ struct mv_sg *sg_tbl;
+ dma_addr_t sg_tbl_dma;
+ u32 pp_flags;
+};
+
+struct mv_port_signal {
+ u32 amps;
+ u32 pre;
+};
+
+struct mv_host_priv;
+struct mv_hw_ops {
+ void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port);
+ void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
+ void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
+ void __iomem *mmio);
+ int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int n_hc);
+ void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
+ void (*reset_bus)(struct pci_dev *pdev, void __iomem *mmio);
+};
+
+struct mv_host_priv {
+ u32 hp_flags;
+ struct mv_port_signal signal[8];
+ const struct mv_hw_ops *ops;
+};
+
+static void mv_irq_clear(struct ata_port *ap);
+static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
+static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
+static u32 mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
+static void mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
+static void mv_phy_reset(struct ata_port *ap);
+static void __mv_phy_reset(struct ata_port *ap, int can_sleep);
+static void mv_host_stop(struct ata_host_set *host_set);
+static int mv_port_start(struct ata_port *ap);
+static void mv_port_stop(struct ata_port *ap);
+static void mv_qc_prep(struct ata_queued_cmd *qc);
+static void mv_qc_prep_iie(struct ata_queued_cmd *qc);
+static unsigned int mv_qc_issue(struct ata_queued_cmd *qc);
+static irqreturn_t mv_interrupt(int irq, void *dev_instance,
+ struct pt_regs *regs);
+static void mv_eng_timeout(struct ata_port *ap);
+static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
+
+static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port);
+static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
+static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
+ void __iomem *mmio);
+static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int n_hc);
+static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
+static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio);
+
+static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port);
+static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
+static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
+ void __iomem *mmio);
+static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int n_hc);
+static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
+static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio);
+static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port_no);
+static void mv_stop_and_reset(struct ata_port *ap);
+
+static struct scsi_host_template mv_sht = {
+ .module = THIS_MODULE,
+ .name = DRV_NAME,
+ .ioctl = ata_scsi_ioctl,
+ .queuecommand = ata_scsi_queuecmd,
+ .can_queue = MV_USE_Q_DEPTH,
+ .this_id = ATA_SHT_THIS_ID,
+ .sg_tablesize = MV_MAX_SG_CT / 2,
+ .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
+ .emulated = ATA_SHT_EMULATED,
+ .use_clustering = ATA_SHT_USE_CLUSTERING,
+ .proc_name = DRV_NAME,
+ .dma_boundary = MV_DMA_BOUNDARY,
+ .slave_configure = ata_scsi_slave_config,
+ .slave_destroy = ata_scsi_slave_destroy,
+ .bios_param = ata_std_bios_param,
+};
+
+static const struct ata_port_operations mv5_ops = {
+ .port_disable = ata_port_disable,
+
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ata_std_dev_select,
+
+ .phy_reset = mv_phy_reset,
+
+ .qc_prep = mv_qc_prep,
+ .qc_issue = mv_qc_issue,
+ .data_xfer = ata_mmio_data_xfer,
+
+ .eng_timeout = mv_eng_timeout,
+
+ .irq_handler = mv_interrupt,
+ .irq_clear = mv_irq_clear,
+
+ .scr_read = mv5_scr_read,
+ .scr_write = mv5_scr_write,
+
+ .port_start = mv_port_start,
+ .port_stop = mv_port_stop,
+ .host_stop = mv_host_stop,
+};
+
+static const struct ata_port_operations mv6_ops = {
+ .port_disable = ata_port_disable,
+
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ata_std_dev_select,
+
+ .phy_reset = mv_phy_reset,
+
+ .qc_prep = mv_qc_prep,
+ .qc_issue = mv_qc_issue,
+ .data_xfer = ata_mmio_data_xfer,
+
+ .eng_timeout = mv_eng_timeout,
+
+ .irq_handler = mv_interrupt,
+ .irq_clear = mv_irq_clear,
+
+ .scr_read = mv_scr_read,
+ .scr_write = mv_scr_write,
+
+ .port_start = mv_port_start,
+ .port_stop = mv_port_stop,
+ .host_stop = mv_host_stop,
+};
+
+static const struct ata_port_operations mv_iie_ops = {
+ .port_disable = ata_port_disable,
+
+ .tf_load = ata_tf_load,
+ .tf_read = ata_tf_read,
+ .check_status = ata_check_status,
+ .exec_command = ata_exec_command,
+ .dev_select = ata_std_dev_select,
+
+ .phy_reset = mv_phy_reset,
+
+ .qc_prep = mv_qc_prep_iie,
+ .qc_issue = mv_qc_issue,
+
+ .eng_timeout = mv_eng_timeout,
+
+ .irq_handler = mv_interrupt,
+ .irq_clear = mv_irq_clear,
+
+ .scr_read = mv_scr_read,
+ .scr_write = mv_scr_write,
+
+ .port_start = mv_port_start,
+ .port_stop = mv_port_stop,
+ .host_stop = mv_host_stop,
+};
+
+static const struct ata_port_info mv_port_info[] = {
+ { /* chip_504x */
+ .sht = &mv_sht,
+ .host_flags = MV_COMMON_FLAGS,
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv5_ops,
+ },
+ { /* chip_508x */
+ .sht = &mv_sht,
+ .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv5_ops,
+ },
+ { /* chip_5080 */
+ .sht = &mv_sht,
+ .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv5_ops,
+ },
+ { /* chip_604x */
+ .sht = &mv_sht,
+ .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv6_ops,
+ },
+ { /* chip_608x */
+ .sht = &mv_sht,
+ .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
+ MV_FLAG_DUAL_HC),
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv6_ops,
+ },
+ { /* chip_6042 */
+ .sht = &mv_sht,
+ .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv_iie_ops,
+ },
+ { /* chip_7042 */
+ .sht = &mv_sht,
+ .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
+ MV_FLAG_DUAL_HC),
+ .pio_mask = 0x1f, /* pio0-4 */
+ .udma_mask = 0x7f, /* udma0-6 */
+ .port_ops = &mv_iie_ops,
+ },
+};
+
+static const struct pci_device_id mv_pci_tbl[] = {
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5040), 0, 0, chip_504x},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5041), 0, 0, chip_504x},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5080), 0, 0, chip_5080},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5081), 0, 0, chip_508x},
+
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6040), 0, 0, chip_604x},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6041), 0, 0, chip_604x},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6042), 0, 0, chip_6042},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6080), 0, 0, chip_608x},
+ {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6081), 0, 0, chip_608x},
+
+ {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x0241), 0, 0, chip_604x},
+ {} /* terminate list */
+};
+
+static struct pci_driver mv_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = mv_pci_tbl,
+ .probe = mv_init_one,
+ .remove = ata_pci_remove_one,
+};
+
+static const struct mv_hw_ops mv5xxx_ops = {
+ .phy_errata = mv5_phy_errata,
+ .enable_leds = mv5_enable_leds,
+ .read_preamp = mv5_read_preamp,
+ .reset_hc = mv5_reset_hc,
+ .reset_flash = mv5_reset_flash,
+ .reset_bus = mv5_reset_bus,
+};
+
+static const struct mv_hw_ops mv6xxx_ops = {
+ .phy_errata = mv6_phy_errata,
+ .enable_leds = mv6_enable_leds,
+ .read_preamp = mv6_read_preamp,
+ .reset_hc = mv6_reset_hc,
+ .reset_flash = mv6_reset_flash,
+ .reset_bus = mv_reset_pci_bus,
+};
+
+/*
+ * module options
+ */
+static int msi; /* Use PCI msi; either zero (off, default) or non-zero */
+
+
+/*
+ * Functions
+ */
+
+static inline void writelfl(unsigned long data, void __iomem *addr)
+{
+ writel(data, addr);
+ (void) readl(addr); /* flush to avoid PCI posted write */
+}
+
+static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
+{
+ return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
+}
+
+static inline unsigned int mv_hc_from_port(unsigned int port)
+{
+ return port >> MV_PORT_HC_SHIFT;
+}
+
+static inline unsigned int mv_hardport_from_port(unsigned int port)
+{
+ return port & MV_PORT_MASK;
+}
+
+static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
+ unsigned int port)
+{
+ return mv_hc_base(base, mv_hc_from_port(port));
+}
+
+static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
+{
+ return mv_hc_base_from_port(base, port) +
+ MV_SATAHC_ARBTR_REG_SZ +
+ (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
+}
+
+static inline void __iomem *mv_ap_base(struct ata_port *ap)
+{
+ return mv_port_base(ap->host_set->mmio_base, ap->port_no);
+}
+
+static inline int mv_get_hc_count(unsigned long host_flags)
+{
+ return ((host_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
+}
+
+static void mv_irq_clear(struct ata_port *ap)
+{
+}
+
+/**
+ * mv_start_dma - Enable eDMA engine
+ * @base: port base address
+ * @pp: port private data
+ *
+ * Verify the local cache of the eDMA state is accurate with a
+ * WARN_ON.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_start_dma(void __iomem *base, struct mv_port_priv *pp)
+{
+ if (!(MV_PP_FLAG_EDMA_EN & pp->pp_flags)) {
+ writelfl(EDMA_EN, base + EDMA_CMD_OFS);
+ pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
+ }
+ WARN_ON(!(EDMA_EN & readl(base + EDMA_CMD_OFS)));
+}
+
+/**
+ * mv_stop_dma - Disable eDMA engine
+ * @ap: ATA channel to manipulate
+ *
+ * Verify the local cache of the eDMA state is accurate with a
+ * WARN_ON.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_stop_dma(struct ata_port *ap)
+{
+ void __iomem *port_mmio = mv_ap_base(ap);
+ struct mv_port_priv *pp = ap->private_data;
+ u32 reg;
+ int i;
+
+ if (MV_PP_FLAG_EDMA_EN & pp->pp_flags) {
+ /* Disable EDMA if active. The disable bit auto clears.
+ */
+ writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
+ pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
+ } else {
+ WARN_ON(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS));
+ }
+
+ /* now properly wait for the eDMA to stop */
+ for (i = 1000; i > 0; i--) {
+ reg = readl(port_mmio + EDMA_CMD_OFS);
+ if (!(EDMA_EN & reg)) {
+ break;
+ }
+ udelay(100);
+ }
+
+ if (EDMA_EN & reg) {
+ ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n");
+ /* FIXME: Consider doing a reset here to recover */
+ }
+}
+
+#ifdef ATA_DEBUG
+static void mv_dump_mem(void __iomem *start, unsigned bytes)
+{
+ int b, w;
+ for (b = 0; b < bytes; ) {
+ DPRINTK("%p: ", start + b);
+ for (w = 0; b < bytes && w < 4; w++) {
+ printk("%08x ",readl(start + b));
+ b += sizeof(u32);
+ }
+ printk("\n");
+ }
+}
+#endif
+
+static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
+{
+#ifdef ATA_DEBUG
+ int b, w;
+ u32 dw;
+ for (b = 0; b < bytes; ) {
+ DPRINTK("%02x: ", b);
+ for (w = 0; b < bytes && w < 4; w++) {
+ (void) pci_read_config_dword(pdev,b,&dw);
+ printk("%08x ",dw);
+ b += sizeof(u32);
+ }
+ printk("\n");
+ }
+#endif
+}
+static void mv_dump_all_regs(void __iomem *mmio_base, int port,
+ struct pci_dev *pdev)
+{
+#ifdef ATA_DEBUG
+ void __iomem *hc_base = mv_hc_base(mmio_base,
+ port >> MV_PORT_HC_SHIFT);
+ void __iomem *port_base;
+ int start_port, num_ports, p, start_hc, num_hcs, hc;
+
+ if (0 > port) {
+ start_hc = start_port = 0;
+ num_ports = 8; /* shld be benign for 4 port devs */
+ num_hcs = 2;
+ } else {
+ start_hc = port >> MV_PORT_HC_SHIFT;
+ start_port = port;
+ num_ports = num_hcs = 1;
+ }
+ DPRINTK("All registers for port(s) %u-%u:\n", start_port,
+ num_ports > 1 ? num_ports - 1 : start_port);
+
+ if (NULL != pdev) {
+ DPRINTK("PCI config space regs:\n");
+ mv_dump_pci_cfg(pdev, 0x68);
+ }
+ DPRINTK("PCI regs:\n");
+ mv_dump_mem(mmio_base+0xc00, 0x3c);
+ mv_dump_mem(mmio_base+0xd00, 0x34);
+ mv_dump_mem(mmio_base+0xf00, 0x4);
+ mv_dump_mem(mmio_base+0x1d00, 0x6c);
+ for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
+ hc_base = mv_hc_base(mmio_base, hc);
+ DPRINTK("HC regs (HC %i):\n", hc);
+ mv_dump_mem(hc_base, 0x1c);
+ }
+ for (p = start_port; p < start_port + num_ports; p++) {
+ port_base = mv_port_base(mmio_base, p);
+ DPRINTK("EDMA regs (port %i):\n",p);
+ mv_dump_mem(port_base, 0x54);
+ DPRINTK("SATA regs (port %i):\n",p);
+ mv_dump_mem(port_base+0x300, 0x60);
+ }
+#endif
+}
+
+static unsigned int mv_scr_offset(unsigned int sc_reg_in)
+{
+ unsigned int ofs;
+
+ switch (sc_reg_in) {
+ case SCR_STATUS:
+ case SCR_CONTROL:
+ case SCR_ERROR:
+ ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
+ break;
+ case SCR_ACTIVE:
+ ofs = SATA_ACTIVE_OFS; /* active is not with the others */
+ break;
+ default:
+ ofs = 0xffffffffU;
+ break;
+ }
+ return ofs;
+}
+
+static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
+{
+ unsigned int ofs = mv_scr_offset(sc_reg_in);
+
+ if (0xffffffffU != ofs) {
+ return readl(mv_ap_base(ap) + ofs);
+ } else {
+ return (u32) ofs;
+ }
+}
+
+static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
+{
+ unsigned int ofs = mv_scr_offset(sc_reg_in);
+
+ if (0xffffffffU != ofs) {
+ writelfl(val, mv_ap_base(ap) + ofs);
+ }
+}
+
+/**
+ * mv_host_stop - Host specific cleanup/stop routine.
+ * @host_set: host data structure
+ *
+ * Disable ints, cleanup host memory, call general purpose
+ * host_stop.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_host_stop(struct ata_host_set *host_set)
+{
+ struct mv_host_priv *hpriv = host_set->private_data;
+ struct pci_dev *pdev = to_pci_dev(host_set->dev);
+
+ if (hpriv->hp_flags & MV_HP_FLAG_MSI) {
+ pci_disable_msi(pdev);
+ } else {
+ pci_intx(pdev, 0);
+ }
+ kfree(hpriv);
+ ata_host_stop(host_set);
+}
+
+static inline void mv_priv_free(struct mv_port_priv *pp, struct device *dev)
+{
+ dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
+}
+
+static void mv_edma_cfg(struct mv_host_priv *hpriv, void __iomem *port_mmio)
+{
+ u32 cfg = readl(port_mmio + EDMA_CFG_OFS);
+
+ /* set up non-NCQ EDMA configuration */
+ cfg &= ~0x1f; /* clear queue depth */
+ cfg &= ~EDMA_CFG_NCQ; /* clear NCQ mode */
+ cfg &= ~(1 << 9); /* disable equeue */
+
+ if (IS_GEN_I(hpriv))
+ cfg |= (1 << 8); /* enab config burst size mask */
+
+ else if (IS_GEN_II(hpriv))
+ cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
+
+ else if (IS_GEN_IIE(hpriv)) {
+ cfg |= (1 << 23); /* dis RX PM port mask */
+ cfg &= ~(1 << 16); /* dis FIS-based switching (for now) */
+ cfg &= ~(1 << 19); /* dis 128-entry queue (for now?) */
+ cfg |= (1 << 18); /* enab early completion */
+ cfg |= (1 << 17); /* enab host q cache */
+ cfg |= (1 << 22); /* enab cutthrough */
+ }
+
+ writelfl(cfg, port_mmio + EDMA_CFG_OFS);
+}
+
+/**
+ * mv_port_start - Port specific init/start routine.
+ * @ap: ATA channel to manipulate
+ *
+ * Allocate and point to DMA memory, init port private memory,
+ * zero indices.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static int mv_port_start(struct ata_port *ap)
+{
+ struct device *dev = ap->host_set->dev;
+ struct mv_host_priv *hpriv = ap->host_set->private_data;
+ struct mv_port_priv *pp;
+ void __iomem *port_mmio = mv_ap_base(ap);
+ void *mem;
+ dma_addr_t mem_dma;
+ int rc = -ENOMEM;
+
+ pp = kmalloc(sizeof(*pp), GFP_KERNEL);
+ if (!pp)
+ goto err_out;
+ memset(pp, 0, sizeof(*pp));
+
+ mem = dma_alloc_coherent(dev, MV_PORT_PRIV_DMA_SZ, &mem_dma,
+ GFP_KERNEL);
+ if (!mem)
+ goto err_out_pp;
+ memset(mem, 0, MV_PORT_PRIV_DMA_SZ);
+
+ rc = ata_pad_alloc(ap, dev);
+ if (rc)
+ goto err_out_priv;
+
+ /* First item in chunk of DMA memory:
+ * 32-slot command request table (CRQB), 32 bytes each in size
+ */
+ pp->crqb = mem;
+ pp->crqb_dma = mem_dma;
+ mem += MV_CRQB_Q_SZ;
+ mem_dma += MV_CRQB_Q_SZ;
+
+ /* Second item:
+ * 32-slot command response table (CRPB), 8 bytes each in size
+ */
+ pp->crpb = mem;
+ pp->crpb_dma = mem_dma;
+ mem += MV_CRPB_Q_SZ;
+ mem_dma += MV_CRPB_Q_SZ;
+
+ /* Third item:
+ * Table of scatter-gather descriptors (ePRD), 16 bytes each
+ */
+ pp->sg_tbl = mem;
+ pp->sg_tbl_dma = mem_dma;
+
+ mv_edma_cfg(hpriv, port_mmio);
+
+ writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
+ writelfl(pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK,
+ port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
+
+ if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
+ writelfl(pp->crqb_dma & 0xffffffff,
+ port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
+ else
+ writelfl(0, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
+
+ writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
+
+ if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
+ writelfl(pp->crpb_dma & 0xffffffff,
+ port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
+ else
+ writelfl(0, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
+
+ writelfl(pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK,
+ port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
+
+ /* Don't turn on EDMA here...do it before DMA commands only. Else
+ * we'll be unable to send non-data, PIO, etc due to restricted access
+ * to shadow regs.
+ */
+ ap->private_data = pp;
+ return 0;
+
+err_out_priv:
+ mv_priv_free(pp, dev);
+err_out_pp:
+ kfree(pp);
+err_out:
+ return rc;
+}
+
+/**
+ * mv_port_stop - Port specific cleanup/stop routine.
+ * @ap: ATA channel to manipulate
+ *
+ * Stop DMA, cleanup port memory.
+ *
+ * LOCKING:
+ * This routine uses the host_set lock to protect the DMA stop.
+ */
+static void mv_port_stop(struct ata_port *ap)
+{
+ struct device *dev = ap->host_set->dev;
+ struct mv_port_priv *pp = ap->private_data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ap->host_set->lock, flags);
+ mv_stop_dma(ap);
+ spin_unlock_irqrestore(&ap->host_set->lock, flags);
+
+ ap->private_data = NULL;
+ ata_pad_free(ap, dev);
+ mv_priv_free(pp, dev);
+ kfree(pp);
+}
+
+/**
+ * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
+ * @qc: queued command whose SG list to source from
+ *
+ * Populate the SG list and mark the last entry.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_fill_sg(struct ata_queued_cmd *qc)
+{
+ struct mv_port_priv *pp = qc->ap->private_data;
+ unsigned int i = 0;
+ struct scatterlist *sg;
+
+ ata_for_each_sg(sg, qc) {
+ dma_addr_t addr;
+ u32 sg_len, len, offset;
+
+ addr = sg_dma_address(sg);
+ sg_len = sg_dma_len(sg);
+
+ while (sg_len) {
+ offset = addr & MV_DMA_BOUNDARY;
+ len = sg_len;
+ if ((offset + sg_len) > 0x10000)
+ len = 0x10000 - offset;
+
+ pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff);
+ pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16);
+ pp->sg_tbl[i].flags_size = cpu_to_le32(len & 0xffff);
+
+ sg_len -= len;
+ addr += len;
+
+ if (!sg_len && ata_sg_is_last(sg, qc))
+ pp->sg_tbl[i].flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
+
+ i++;
+ }
+ }
+}
+
+static inline unsigned mv_inc_q_index(unsigned index)
+{
+ return (index + 1) & MV_MAX_Q_DEPTH_MASK;
+}
+
+static inline void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last)
+{
+ u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
+ (last ? CRQB_CMD_LAST : 0);
+ *cmdw = cpu_to_le16(tmp);
+}
+
+/**
+ * mv_qc_prep - Host specific command preparation.
+ * @qc: queued command to prepare
+ *
+ * This routine simply redirects to the general purpose routine
+ * if command is not DMA. Else, it handles prep of the CRQB
+ * (command request block), does some sanity checking, and calls
+ * the SG load routine.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_qc_prep(struct ata_queued_cmd *qc)
+{
+ struct ata_port *ap = qc->ap;
+ struct mv_port_priv *pp = ap->private_data;
+ __le16 *cw;
+ struct ata_taskfile *tf;
+ u16 flags = 0;
+ unsigned in_index;
+
+ if (ATA_PROT_DMA != qc->tf.protocol)
+ return;
+
+ /* Fill in command request block
+ */
+ if (!(qc->tf.flags & ATA_TFLAG_WRITE))
+ flags |= CRQB_FLAG_READ;
+ WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
+ flags |= qc->tag << CRQB_TAG_SHIFT;
+
+ /* get current queue index from hardware */
+ in_index = (readl(mv_ap_base(ap) + EDMA_REQ_Q_IN_PTR_OFS)
+ >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
+
+ pp->crqb[in_index].sg_addr =
+ cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
+ pp->crqb[in_index].sg_addr_hi =
+ cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
+ pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
+
+ cw = &pp->crqb[in_index].ata_cmd[0];
+ tf = &qc->tf;
+
+ /* Sadly, the CRQB cannot accomodate all registers--there are
+ * only 11 bytes...so we must pick and choose required
+ * registers based on the command. So, we drop feature and
+ * hob_feature for [RW] DMA commands, but they are needed for
+ * NCQ. NCQ will drop hob_nsect.
+ */
+ switch (tf->command) {
+ case ATA_CMD_READ:
+ case ATA_CMD_READ_EXT:
+ case ATA_CMD_WRITE:
+ case ATA_CMD_WRITE_EXT:
+ case ATA_CMD_WRITE_FUA_EXT:
+ mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
+ break;
+#ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
+ case ATA_CMD_FPDMA_READ:
+ case ATA_CMD_FPDMA_WRITE:
+ mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
+ mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
+ break;
+#endif /* FIXME: remove this line when NCQ added */
+ default:
+ /* The only other commands EDMA supports in non-queued and
+ * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
+ * of which are defined/used by Linux. If we get here, this
+ * driver needs work.
+ *
+ * FIXME: modify libata to give qc_prep a return value and
+ * return error here.
+ */
+ BUG_ON(tf->command);
+ break;
+ }
+ mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
+ mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
+ mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
+ mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
+ mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
+ mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
+ mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
+ mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
+ mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
+
+ if (!(qc->flags & ATA_QCFLAG_DMAMAP))
+ return;
+ mv_fill_sg(qc);
+}
+
+/**
+ * mv_qc_prep_iie - Host specific command preparation.
+ * @qc: queued command to prepare
+ *
+ * This routine simply redirects to the general purpose routine
+ * if command is not DMA. Else, it handles prep of the CRQB
+ * (command request block), does some sanity checking, and calls
+ * the SG load routine.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
+{
+ struct ata_port *ap = qc->ap;
+ struct mv_port_priv *pp = ap->private_data;
+ struct mv_crqb_iie *crqb;
+ struct ata_taskfile *tf;
+ unsigned in_index;
+ u32 flags = 0;
+
+ if (ATA_PROT_DMA != qc->tf.protocol)
+ return;
+
+ /* Fill in Gen IIE command request block
+ */
+ if (!(qc->tf.flags & ATA_TFLAG_WRITE))
+ flags |= CRQB_FLAG_READ;
+
+ WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
+ flags |= qc->tag << CRQB_TAG_SHIFT;
+
+ /* get current queue index from hardware */
+ in_index = (readl(mv_ap_base(ap) + EDMA_REQ_Q_IN_PTR_OFS)
+ >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
+
+ crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
+ crqb->addr = cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
+ crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
+ crqb->flags = cpu_to_le32(flags);
+
+ tf = &qc->tf;
+ crqb->ata_cmd[0] = cpu_to_le32(
+ (tf->command << 16) |
+ (tf->feature << 24)
+ );
+ crqb->ata_cmd[1] = cpu_to_le32(
+ (tf->lbal << 0) |
+ (tf->lbam << 8) |
+ (tf->lbah << 16) |
+ (tf->device << 24)
+ );
+ crqb->ata_cmd[2] = cpu_to_le32(
+ (tf->hob_lbal << 0) |
+ (tf->hob_lbam << 8) |
+ (tf->hob_lbah << 16) |
+ (tf->hob_feature << 24)
+ );
+ crqb->ata_cmd[3] = cpu_to_le32(
+ (tf->nsect << 0) |
+ (tf->hob_nsect << 8)
+ );
+
+ if (!(qc->flags & ATA_QCFLAG_DMAMAP))
+ return;
+ mv_fill_sg(qc);
+}
+
+/**
+ * mv_qc_issue - Initiate a command to the host
+ * @qc: queued command to start
+ *
+ * This routine simply redirects to the general purpose routine
+ * if command is not DMA. Else, it sanity checks our local
+ * caches of the request producer/consumer indices then enables
+ * DMA and bumps the request producer index.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
+{
+ void __iomem *port_mmio = mv_ap_base(qc->ap);
+ struct mv_port_priv *pp = qc->ap->private_data;
+ unsigned in_index;
+ u32 in_ptr;
+
+ if (ATA_PROT_DMA != qc->tf.protocol) {
+ /* We're about to send a non-EDMA capable command to the
+ * port. Turn off EDMA so there won't be problems accessing
+ * shadow block, etc registers.
+ */
+ mv_stop_dma(qc->ap);
+ return ata_qc_issue_prot(qc);
+ }
+
+ in_ptr = readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
+ in_index = (in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
+
+ /* until we do queuing, the queue should be empty at this point */
+ WARN_ON(in_index != ((readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
+ >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
+
+ in_index = mv_inc_q_index(in_index); /* now incr producer index */
+
+ mv_start_dma(port_mmio, pp);
+
+ /* and write the request in pointer to kick the EDMA to life */
+ in_ptr &= EDMA_REQ_Q_BASE_LO_MASK;
+ in_ptr |= in_index << EDMA_REQ_Q_PTR_SHIFT;
+ writelfl(in_ptr, port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
+
+ return 0;
+}
+
+/**
+ * mv_get_crpb_status - get status from most recently completed cmd
+ * @ap: ATA channel to manipulate
+ *
+ * This routine is for use when the port is in DMA mode, when it
+ * will be using the CRPB (command response block) method of
+ * returning command completion information. We check indices
+ * are good, grab status, and bump the response consumer index to
+ * prove that we're up to date.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static u8 mv_get_crpb_status(struct ata_port *ap)
+{
+ void __iomem *port_mmio = mv_ap_base(ap);
+ struct mv_port_priv *pp = ap->private_data;
+ unsigned out_index;
+ u32 out_ptr;
+ u8 ata_status;
+
+ out_ptr = readl(port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
+ out_index = (out_ptr >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
+
+ ata_status = le16_to_cpu(pp->crpb[out_index].flags)
+ >> CRPB_FLAG_STATUS_SHIFT;
+
+ /* increment our consumer index... */
+ out_index = mv_inc_q_index(out_index);
+
+ /* and, until we do NCQ, there should only be 1 CRPB waiting */
+ WARN_ON(out_index != ((readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
+ >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
+
+ /* write out our inc'd consumer index so EDMA knows we're caught up */
+ out_ptr &= EDMA_RSP_Q_BASE_LO_MASK;
+ out_ptr |= out_index << EDMA_RSP_Q_PTR_SHIFT;
+ writelfl(out_ptr, port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
+
+ /* Return ATA status register for completed CRPB */
+ return ata_status;
+}
+
+/**
+ * mv_err_intr - Handle error interrupts on the port
+ * @ap: ATA channel to manipulate
+ * @reset_allowed: bool: 0 == don't trigger from reset here
+ *
+ * In most cases, just clear the interrupt and move on. However,
+ * some cases require an eDMA reset, which is done right before
+ * the COMRESET in mv_phy_reset(). The SERR case requires a
+ * clear of pending errors in the SATA SERROR register. Finally,
+ * if the port disabled DMA, update our cached copy to match.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_err_intr(struct ata_port *ap, int reset_allowed)
+{
+ void __iomem *port_mmio = mv_ap_base(ap);
+ u32 edma_err_cause, serr = 0;
+
+ edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+
+ if (EDMA_ERR_SERR & edma_err_cause) {
+ sata_scr_read(ap, SCR_ERROR, &serr);
+ sata_scr_write_flush(ap, SCR_ERROR, serr);
+ }
+ if (EDMA_ERR_SELF_DIS & edma_err_cause) {
+ struct mv_port_priv *pp = ap->private_data;
+ pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
+ }
+ DPRINTK(KERN_ERR "ata%u: port error; EDMA err cause: 0x%08x "
+ "SERR: 0x%08x\n", ap->id, edma_err_cause, serr);
+
+ /* Clear EDMA now that SERR cleanup done */
+ writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+
+ /* check for fatal here and recover if needed */
+ if (reset_allowed && (EDMA_ERR_FATAL & edma_err_cause))
+ mv_stop_and_reset(ap);
+}
+
+/**
+ * mv_host_intr - Handle all interrupts on the given host controller
+ * @host_set: host specific structure
+ * @relevant: port error bits relevant to this host controller
+ * @hc: which host controller we're to look at
+ *
+ * Read then write clear the HC interrupt status then walk each
+ * port connected to the HC and see if it needs servicing. Port
+ * success ints are reported in the HC interrupt status reg, the
+ * port error ints are reported in the higher level main
+ * interrupt status register and thus are passed in via the
+ * 'relevant' argument.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
+ unsigned int hc)
+{
+ void __iomem *mmio = host_set->mmio_base;
+ void __iomem *hc_mmio = mv_hc_base(mmio, hc);
+ struct ata_queued_cmd *qc;
+ u32 hc_irq_cause;
+ int shift, port, port0, hard_port, handled;
+ unsigned int err_mask;
+
+ if (hc == 0) {
+ port0 = 0;
+ } else {
+ port0 = MV_PORTS_PER_HC;
+ }
+
+ /* we'll need the HC success int register in most cases */
+ hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
+ if (hc_irq_cause) {
+ writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
+ }
+
+ VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
+ hc,relevant,hc_irq_cause);
+
+ for (port = port0; port < port0 + MV_PORTS_PER_HC; port++) {
+ u8 ata_status = 0;
+ struct ata_port *ap = host_set->ports[port];
+ struct mv_port_priv *pp = ap->private_data;
+
+ hard_port = mv_hardport_from_port(port); /* range 0..3 */
+ handled = 0; /* ensure ata_status is set if handled++ */
+
+ /* Note that DEV_IRQ might happen spuriously during EDMA,
+ * and should be ignored in such cases.
+ * The cause of this is still under investigation.
+ */
+ if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
+ /* EDMA: check for response queue interrupt */
+ if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
+ ata_status = mv_get_crpb_status(ap);
+ handled = 1;
+ }
+ } else {
+ /* PIO: check for device (drive) interrupt */
+ if ((DEV_IRQ << hard_port) & hc_irq_cause) {
+ ata_status = readb((void __iomem *)
+ ap->ioaddr.status_addr);
+ handled = 1;
+ /* ignore spurious intr if drive still BUSY */
+ if (ata_status & ATA_BUSY) {
+ ata_status = 0;
+ handled = 0;
+ }
+ }
+ }
+
+ if (ap && (ap->flags & ATA_FLAG_DISABLED))
+ continue;
+
+ err_mask = ac_err_mask(ata_status);
+
+ shift = port << 1; /* (port * 2) */
+ if (port >= MV_PORTS_PER_HC) {
+ shift++; /* skip bit 8 in the HC Main IRQ reg */
+ }
+ if ((PORT0_ERR << shift) & relevant) {
+ mv_err_intr(ap, 1);
+ err_mask |= AC_ERR_OTHER;
+ handled = 1;
+ }
+
+ if (handled) {
+ qc = ata_qc_from_tag(ap, ap->active_tag);
+ if (qc && (qc->flags & ATA_QCFLAG_ACTIVE)) {
+ VPRINTK("port %u IRQ found for qc, "
+ "ata_status 0x%x\n", port,ata_status);
+ /* mark qc status appropriately */
+ if (!(qc->tf.flags & ATA_TFLAG_POLLING)) {
+ qc->err_mask |= err_mask;
+ ata_qc_complete(qc);
+ }
+ }
+ }
+ }
+ VPRINTK("EXIT\n");
+}
+
+/**
+ * mv_interrupt -
+ * @irq: unused
+ * @dev_instance: private data; in this case the host structure
+ * @regs: unused
+ *
+ * Read the read only register to determine if any host
+ * controllers have pending interrupts. If so, call lower level
+ * routine to handle. Also check for PCI errors which are only
+ * reported here.
+ *
+ * LOCKING:
+ * This routine holds the host_set lock while processing pending
+ * interrupts.
+ */
+static irqreturn_t mv_interrupt(int irq, void *dev_instance,
+ struct pt_regs *regs)
+{
+ struct ata_host_set *host_set = dev_instance;
+ unsigned int hc, handled = 0, n_hcs;
+ void __iomem *mmio = host_set->mmio_base;
+ struct mv_host_priv *hpriv;
+ u32 irq_stat;
+
+ irq_stat = readl(mmio + HC_MAIN_IRQ_CAUSE_OFS);
+
+ /* check the cases where we either have nothing pending or have read
+ * a bogus register value which can indicate HW removal or PCI fault
+ */
+ if (!irq_stat || (0xffffffffU == irq_stat)) {
+ return IRQ_NONE;
+ }
+
+ n_hcs = mv_get_hc_count(host_set->ports[0]->flags);
+ spin_lock(&host_set->lock);
+
+ for (hc = 0; hc < n_hcs; hc++) {
+ u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT));
+ if (relevant) {
+ mv_host_intr(host_set, relevant, hc);
+ handled++;
+ }
+ }
+
+ hpriv = host_set->private_data;
+ if (IS_60XX(hpriv)) {
+ /* deal with the interrupt coalescing bits */
+ if (irq_stat & (TRAN_LO_DONE | TRAN_HI_DONE | PORTS_0_7_COAL_DONE)) {
+ writelfl(0, mmio + MV_IRQ_COAL_CAUSE_LO);
+ writelfl(0, mmio + MV_IRQ_COAL_CAUSE_HI);
+ writelfl(0, mmio + MV_IRQ_COAL_CAUSE);
+ }
+ }
+
+ if (PCI_ERR & irq_stat) {
+ printk(KERN_ERR DRV_NAME ": PCI ERROR; PCI IRQ cause=0x%08x\n",
+ readl(mmio + PCI_IRQ_CAUSE_OFS));
+
+ DPRINTK("All regs @ PCI error\n");
+ mv_dump_all_regs(mmio, -1, to_pci_dev(host_set->dev));
+
+ writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
+ handled++;
+ }
+ spin_unlock(&host_set->lock);
+
+ return IRQ_RETVAL(handled);
+}
+
+static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
+{
+ void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
+ unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
+
+ return hc_mmio + ofs;
+}
+
+static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
+{
+ unsigned int ofs;
+
+ switch (sc_reg_in) {
+ case SCR_STATUS:
+ case SCR_ERROR:
+ case SCR_CONTROL:
+ ofs = sc_reg_in * sizeof(u32);
+ break;
+ default:
+ ofs = 0xffffffffU;
+ break;
+ }
+ return ofs;
+}
+
+static u32 mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
+{
+ void __iomem *mmio = mv5_phy_base(ap->host_set->mmio_base, ap->port_no);
+ unsigned int ofs = mv5_scr_offset(sc_reg_in);
+
+ if (ofs != 0xffffffffU)
+ return readl(mmio + ofs);
+ else
+ return (u32) ofs;
+}
+
+static void mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
+{
+ void __iomem *mmio = mv5_phy_base(ap->host_set->mmio_base, ap->port_no);
+ unsigned int ofs = mv5_scr_offset(sc_reg_in);
+
+ if (ofs != 0xffffffffU)
+ writelfl(val, mmio + ofs);
+}
+
+static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
+{
+ u8 rev_id;
+ int early_5080;
+
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
+
+ early_5080 = (pdev->device == 0x5080) && (rev_id == 0);
+
+ if (!early_5080) {
+ u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
+ tmp |= (1 << 0);
+ writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
+ }
+
+ mv_reset_pci_bus(pdev, mmio);
+}
+
+static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
+{
+ writel(0x0fcfffff, mmio + MV_FLASH_CTL);
+}
+
+static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
+ void __iomem *mmio)
+{
+ void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
+ u32 tmp;
+
+ tmp = readl(phy_mmio + MV5_PHY_MODE);
+
+ hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
+ hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
+}
+
+static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
+{
+ u32 tmp;
+
+ writel(0, mmio + MV_GPIO_PORT_CTL);
+
+ /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
+
+ tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
+ tmp |= ~(1 << 0);
+ writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
+}
+
+static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port)
+{
+ void __iomem *phy_mmio = mv5_phy_base(mmio, port);
+ const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
+ u32 tmp;
+ int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
+
+ if (fix_apm_sq) {
+ tmp = readl(phy_mmio + MV5_LT_MODE);
+ tmp |= (1 << 19);
+ writel(tmp, phy_mmio + MV5_LT_MODE);
+
+ tmp = readl(phy_mmio + MV5_PHY_CTL);
+ tmp &= ~0x3;
+ tmp |= 0x1;
+ writel(tmp, phy_mmio + MV5_PHY_CTL);
+ }
+
+ tmp = readl(phy_mmio + MV5_PHY_MODE);
+ tmp &= ~mask;
+ tmp |= hpriv->signal[port].pre;
+ tmp |= hpriv->signal[port].amps;
+ writel(tmp, phy_mmio + MV5_PHY_MODE);
+}
+
+
+#undef ZERO
+#define ZERO(reg) writel(0, port_mmio + (reg))
+static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port)
+{
+ void __iomem *port_mmio = mv_port_base(mmio, port);
+
+ writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
+
+ mv_channel_reset(hpriv, mmio, port);
+
+ ZERO(0x028); /* command */
+ writel(0x11f, port_mmio + EDMA_CFG_OFS);
+ ZERO(0x004); /* timer */
+ ZERO(0x008); /* irq err cause */
+ ZERO(0x00c); /* irq err mask */
+ ZERO(0x010); /* rq bah */
+ ZERO(0x014); /* rq inp */
+ ZERO(0x018); /* rq outp */
+ ZERO(0x01c); /* respq bah */
+ ZERO(0x024); /* respq outp */
+ ZERO(0x020); /* respq inp */
+ ZERO(0x02c); /* test control */
+ writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
+}
+#undef ZERO
+
+#define ZERO(reg) writel(0, hc_mmio + (reg))
+static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int hc)
+{
+ void __iomem *hc_mmio = mv_hc_base(mmio, hc);
+ u32 tmp;
+
+ ZERO(0x00c);
+ ZERO(0x010);
+ ZERO(0x014);
+ ZERO(0x018);
+
+ tmp = readl(hc_mmio + 0x20);
+ tmp &= 0x1c1c1c1c;
+ tmp |= 0x03030303;
+ writel(tmp, hc_mmio + 0x20);
+}
+#undef ZERO
+
+static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int n_hc)
+{
+ unsigned int hc, port;
+
+ for (hc = 0; hc < n_hc; hc++) {
+ for (port = 0; port < MV_PORTS_PER_HC; port++)
+ mv5_reset_hc_port(hpriv, mmio,
+ (hc * MV_PORTS_PER_HC) + port);
+
+ mv5_reset_one_hc(hpriv, mmio, hc);
+ }
+
+ return 0;
+}
+
+#undef ZERO
+#define ZERO(reg) writel(0, mmio + (reg))
+static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio)
+{
+ u32 tmp;
+
+ tmp = readl(mmio + MV_PCI_MODE);
+ tmp &= 0xff00ffff;
+ writel(tmp, mmio + MV_PCI_MODE);
+
+ ZERO(MV_PCI_DISC_TIMER);
+ ZERO(MV_PCI_MSI_TRIGGER);
+ writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
+ ZERO(HC_MAIN_IRQ_MASK_OFS);
+ ZERO(MV_PCI_SERR_MASK);
+ ZERO(PCI_IRQ_CAUSE_OFS);
+ ZERO(PCI_IRQ_MASK_OFS);
+ ZERO(MV_PCI_ERR_LOW_ADDRESS);
+ ZERO(MV_PCI_ERR_HIGH_ADDRESS);
+ ZERO(MV_PCI_ERR_ATTRIBUTE);
+ ZERO(MV_PCI_ERR_COMMAND);
+}
+#undef ZERO
+
+static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
+{
+ u32 tmp;
+
+ mv5_reset_flash(hpriv, mmio);
+
+ tmp = readl(mmio + MV_GPIO_PORT_CTL);
+ tmp &= 0x3;
+ tmp |= (1 << 5) | (1 << 6);
+ writel(tmp, mmio + MV_GPIO_PORT_CTL);
+}
+
+/**
+ * mv6_reset_hc - Perform the 6xxx global soft reset
+ * @mmio: base address of the HBA
+ *
+ * This routine only applies to 6xxx parts.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+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;
+ int i, rc = 0;
+ u32 t;
+
+ /* Following procedure defined in PCI "main command and status
+ * register" table.
+ */
+ t = readl(reg);
+ writel(t | STOP_PCI_MASTER, reg);
+
+ for (i = 0; i < 1000; i++) {
+ udelay(1);
+ t = readl(reg);
+ if (PCI_MASTER_EMPTY & t) {
+ break;
+ }
+ }
+ if (!(PCI_MASTER_EMPTY & t)) {
+ printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
+ rc = 1;
+ goto done;
+ }
+
+ /* set reset */
+ i = 5;
+ do {
+ writel(t | GLOB_SFT_RST, reg);
+ t = readl(reg);
+ udelay(1);
+ } while (!(GLOB_SFT_RST & t) && (i-- > 0));
+
+ if (!(GLOB_SFT_RST & t)) {
+ printk(KERN_ERR DRV_NAME ": can't set global reset\n");
+ rc = 1;
+ goto done;
+ }
+
+ /* clear reset and *reenable the PCI master* (not mentioned in spec) */
+ i = 5;
+ do {
+ writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
+ t = readl(reg);
+ udelay(1);
+ } while ((GLOB_SFT_RST & t) && (i-- > 0));
+
+ if (GLOB_SFT_RST & t) {
+ printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
+ rc = 1;
+ }
+done:
+ return rc;
+}
+
+static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
+ void __iomem *mmio)
+{
+ void __iomem *port_mmio;
+ u32 tmp;
+
+ tmp = readl(mmio + MV_RESET_CFG);
+ if ((tmp & (1 << 0)) == 0) {
+ hpriv->signal[idx].amps = 0x7 << 8;
+ hpriv->signal[idx].pre = 0x1 << 5;
+ return;
+ }
+
+ port_mmio = mv_port_base(mmio, idx);
+ tmp = readl(port_mmio + PHY_MODE2);
+
+ hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
+ hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
+}
+
+static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
+{
+ writel(0x00000060, mmio + MV_GPIO_PORT_CTL);
+}
+
+static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port)
+{
+ void __iomem *port_mmio = mv_port_base(mmio, port);
+
+ u32 hp_flags = hpriv->hp_flags;
+ int fix_phy_mode2 =
+ hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
+ int fix_phy_mode4 =
+ hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
+ u32 m2, tmp;
+
+ if (fix_phy_mode2) {
+ m2 = readl(port_mmio + PHY_MODE2);
+ m2 &= ~(1 << 16);
+ m2 |= (1 << 31);
+ writel(m2, port_mmio + PHY_MODE2);
+
+ udelay(200);
+
+ m2 = readl(port_mmio + PHY_MODE2);
+ m2 &= ~((1 << 16) | (1 << 31));
+ writel(m2, port_mmio + PHY_MODE2);
+
+ udelay(200);
+ }
+
+ /* who knows what this magic does */
+ tmp = readl(port_mmio + PHY_MODE3);
+ tmp &= ~0x7F800000;
+ tmp |= 0x2A800000;
+ writel(tmp, port_mmio + PHY_MODE3);
+
+ if (fix_phy_mode4) {
+ u32 m4;
+
+ m4 = readl(port_mmio + PHY_MODE4);
+
+ if (hp_flags & MV_HP_ERRATA_60X1B2)
+ tmp = readl(port_mmio + 0x310);
+
+ m4 = (m4 & ~(1 << 1)) | (1 << 0);
+
+ writel(m4, port_mmio + PHY_MODE4);
+
+ if (hp_flags & MV_HP_ERRATA_60X1B2)
+ writel(tmp, port_mmio + 0x310);
+ }
+
+ /* Revert values of pre-emphasis and signal amps to the saved ones */
+ m2 = readl(port_mmio + PHY_MODE2);
+
+ m2 &= ~MV_M2_PREAMP_MASK;
+ m2 |= hpriv->signal[port].amps;
+ m2 |= hpriv->signal[port].pre;
+ m2 &= ~(1 << 16);
+
+ /* according to mvSata 3.6.1, some IIE values are fixed */
+ if (IS_GEN_IIE(hpriv)) {
+ m2 &= ~0xC30FF01F;
+ m2 |= 0x0000900F;
+ }
+
+ writel(m2, port_mmio + PHY_MODE2);
+}
+
+static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
+ unsigned int port_no)
+{
+ void __iomem *port_mmio = mv_port_base(mmio, port_no);
+
+ writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS);
+
+ if (IS_60XX(hpriv)) {
+ u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
+ ifctl |= (1 << 7); /* enable gen2i speed */
+ ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
+ writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
+ }
+
+ udelay(25); /* allow reset propagation */
+
+ /* Spec never mentions clearing the bit. Marvell's driver does
+ * clear the bit, however.
+ */
+ writelfl(0, port_mmio + EDMA_CMD_OFS);
+
+ hpriv->ops->phy_errata(hpriv, mmio, port_no);
+
+ if (IS_50XX(hpriv))
+ mdelay(1);
+}
+
+static void mv_stop_and_reset(struct ata_port *ap)
+{
+ struct mv_host_priv *hpriv = ap->host_set->private_data;
+ void __iomem *mmio = ap->host_set->mmio_base;
+
+ mv_stop_dma(ap);
+
+ mv_channel_reset(hpriv, mmio, ap->port_no);
+
+ __mv_phy_reset(ap, 0);
+}
+
+static inline void __msleep(unsigned int msec, int can_sleep)
+{
+ if (can_sleep)
+ msleep(msec);
+ else
+ mdelay(msec);
+}
+
+/**
+ * __mv_phy_reset - Perform eDMA reset followed by COMRESET
+ * @ap: ATA channel to manipulate
+ *
+ * Part of this is taken from __sata_phy_reset and modified to
+ * not sleep since this routine gets called from interrupt level.
+ *
+ * LOCKING:
+ * Inherited from caller. This is coded to safe to call at
+ * interrupt level, i.e. it does not sleep.
+ */
+static void __mv_phy_reset(struct ata_port *ap, int can_sleep)
+{
+ struct mv_port_priv *pp = ap->private_data;
+ struct mv_host_priv *hpriv = ap->host_set->private_data;
+ void __iomem *port_mmio = mv_ap_base(ap);
+ struct ata_taskfile tf;
+ struct ata_device *dev = &ap->device[0];
+ unsigned long timeout;
+ int retry = 5;
+ u32 sstatus;
+
+ VPRINTK("ENTER, port %u, mmio 0x%p\n", ap->port_no, port_mmio);
+
+ DPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x "
+ "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
+ mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
+
+ /* Issue COMRESET via SControl */
+comreset_retry:
+ sata_scr_write_flush(ap, SCR_CONTROL, 0x301);
+ __msleep(1, can_sleep);
+
+ sata_scr_write_flush(ap, SCR_CONTROL, 0x300);
+ __msleep(20, can_sleep);
+
+ timeout = jiffies + msecs_to_jiffies(200);
+ do {
+ sata_scr_read(ap, SCR_STATUS, &sstatus);
+ sstatus &= 0x3;
+ if ((sstatus == 3) || (sstatus == 0))
+ break;
+
+ __msleep(1, can_sleep);
+ } while (time_before(jiffies, timeout));
+
+ /* work around errata */
+ if (IS_60XX(hpriv) &&
+ (sstatus != 0x0) && (sstatus != 0x113) && (sstatus != 0x123) &&
+ (retry-- > 0))
+ goto comreset_retry;
+
+ DPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x "
+ "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
+ mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
+
+ if (ata_port_online(ap)) {
+ ata_port_probe(ap);
+ } else {
+ sata_scr_read(ap, SCR_STATUS, &sstatus);
+ ata_port_printk(ap, KERN_INFO,
+ "no device found (phy stat %08x)\n", sstatus);
+ ata_port_disable(ap);
+ return;
+ }
+ ap->cbl = ATA_CBL_SATA;
+
+ /* even after SStatus reflects that device is ready,
+ * it seems to take a while for link to be fully
+ * established (and thus Status no longer 0x80/0x7F),
+ * so we poll a bit for that, here.
+ */
+ retry = 20;
+ while (1) {
+ u8 drv_stat = ata_check_status(ap);
+ if ((drv_stat != 0x80) && (drv_stat != 0x7f))
+ break;
+ __msleep(500, can_sleep);
+ if (retry-- <= 0)
+ break;
+ }
+
+ tf.lbah = readb((void __iomem *) ap->ioaddr.lbah_addr);
+ tf.lbam = readb((void __iomem *) ap->ioaddr.lbam_addr);
+ tf.lbal = readb((void __iomem *) ap->ioaddr.lbal_addr);
+ tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr);
+
+ dev->class = ata_dev_classify(&tf);
+ if (!ata_dev_enabled(dev)) {
+ VPRINTK("Port disabled post-sig: No device present.\n");
+ ata_port_disable(ap);
+ }
+
+ writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
+
+ pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
+
+ VPRINTK("EXIT\n");
+}
+
+static void mv_phy_reset(struct ata_port *ap)
+{
+ __mv_phy_reset(ap, 1);
+}
+
+/**
+ * mv_eng_timeout - Routine called by libata when SCSI times out I/O
+ * @ap: ATA channel to manipulate
+ *
+ * Intent is to clear all pending error conditions, reset the
+ * chip/bus, fail the command, and move on.
+ *
+ * LOCKING:
+ * This routine holds the host_set lock while failing the command.
+ */
+static void mv_eng_timeout(struct ata_port *ap)
+{
+ struct ata_queued_cmd *qc;
+ unsigned long flags;
+
+ ata_port_printk(ap, KERN_ERR, "Entering mv_eng_timeout\n");
+ DPRINTK("All regs @ start of eng_timeout\n");
+ mv_dump_all_regs(ap->host_set->mmio_base, ap->port_no,
+ to_pci_dev(ap->host_set->dev));
+
+ qc = ata_qc_from_tag(ap, ap->active_tag);
+ printk(KERN_ERR "mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
+ ap->host_set->mmio_base, ap, qc, qc->scsicmd,
+ &qc->scsicmd->cmnd);
+
+ spin_lock_irqsave(&ap->host_set->lock, flags);
+ mv_err_intr(ap, 0);
+ mv_stop_and_reset(ap);
+ spin_unlock_irqrestore(&ap->host_set->lock, flags);
+
+ WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
+ if (qc->flags & ATA_QCFLAG_ACTIVE) {
+ qc->err_mask |= AC_ERR_TIMEOUT;
+ ata_eh_qc_complete(qc);
+ }
+}
+
+/**
+ * mv_port_init - Perform some early initialization on a single port.
+ * @port: libata data structure storing shadow register addresses
+ * @port_mmio: base address of the port
+ *
+ * Initialize shadow register mmio addresses, clear outstanding
+ * interrupts on the port, and unmask interrupts for the future
+ * start of the port.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
+{
+ unsigned long shd_base = (unsigned long) port_mmio + SHD_BLK_OFS;
+ unsigned serr_ofs;
+
+ /* PIO related setup
+ */
+ port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
+ port->error_addr =
+ port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
+ port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
+ port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
+ port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
+ port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
+ port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
+ 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;
+
+ /* unused: */
+ port->cmd_addr = port->bmdma_addr = port->scr_addr = 0;
+
+ /* 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);
+
+ /* unmask all EDMA error interrupts */
+ writelfl(~0, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
+
+ 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));
+}
+
+static int mv_chip_id(struct pci_dev *pdev, struct mv_host_priv *hpriv,
+ unsigned int board_idx)
+{
+ u8 rev_id;
+ u32 hp_flags = hpriv->hp_flags;
+
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
+
+ switch(board_idx) {
+ case chip_5080:
+ hpriv->ops = &mv5xxx_ops;
+ hp_flags |= MV_HP_50XX;
+
+ switch (rev_id) {
+ case 0x1:
+ hp_flags |= MV_HP_ERRATA_50XXB0;
+ break;
+ case 0x3:
+ hp_flags |= MV_HP_ERRATA_50XXB2;
+ break;
+ default:
+ dev_printk(KERN_WARNING, &pdev->dev,
+ "Applying 50XXB2 workarounds to unknown rev\n");
+ hp_flags |= MV_HP_ERRATA_50XXB2;
+ break;
+ }
+ break;
+
+ case chip_504x:
+ case chip_508x:
+ hpriv->ops = &mv5xxx_ops;
+ hp_flags |= MV_HP_50XX;
+
+ switch (rev_id) {
+ case 0x0:
+ hp_flags |= MV_HP_ERRATA_50XXB0;
+ break;
+ case 0x3:
+ hp_flags |= MV_HP_ERRATA_50XXB2;
+ break;
+ default:
+ dev_printk(KERN_WARNING, &pdev->dev,
+ "Applying B2 workarounds to unknown rev\n");
+ hp_flags |= MV_HP_ERRATA_50XXB2;
+ break;
+ }
+ break;
+
+ case chip_604x:
+ case chip_608x:
+ hpriv->ops = &mv6xxx_ops;
+
+ switch (rev_id) {
+ case 0x7:
+ hp_flags |= MV_HP_ERRATA_60X1B2;
+ break;
+ case 0x9:
+ hp_flags |= MV_HP_ERRATA_60X1C0;
+ break;
+ default:
+ dev_printk(KERN_WARNING, &pdev->dev,
+ "Applying B2 workarounds to unknown rev\n");
+ hp_flags |= MV_HP_ERRATA_60X1B2;
+ break;
+ }
+ break;
+
+ case chip_7042:
+ case chip_6042:
+ hpriv->ops = &mv6xxx_ops;
+
+ hp_flags |= MV_HP_GEN_IIE;
+
+ switch (rev_id) {
+ case 0x0:
+ hp_flags |= MV_HP_ERRATA_XX42A0;
+ break;
+ case 0x1:
+ hp_flags |= MV_HP_ERRATA_60X1C0;
+ break;
+ default:
+ dev_printk(KERN_WARNING, &pdev->dev,
+ "Applying 60X1C0 workarounds to unknown rev\n");
+ hp_flags |= MV_HP_ERRATA_60X1C0;
+ break;
+ }
+ break;
+
+ default:
+ printk(KERN_ERR DRV_NAME ": BUG: invalid board index %u\n", board_idx);
+ return 1;
+ }
+
+ hpriv->hp_flags = hp_flags;
+
+ return 0;
+}
+
+/**
+ * mv_init_host - Perform some early initialization of the host.
+ * @pdev: host PCI device
+ * @probe_ent: early data struct representing the host
+ *
+ * If possible, do an early global reset of the host. Then do
+ * our port init and clear/unmask all/relevant host interrupts.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
+ unsigned int board_idx)
+{
+ int rc = 0, n_hc, port, hc;
+ void __iomem *mmio = probe_ent->mmio_base;
+ struct mv_host_priv *hpriv = probe_ent->private_data;
+
+ /* global interrupt mask */
+ writel(0, mmio + HC_MAIN_IRQ_MASK_OFS);
+
+ rc = mv_chip_id(pdev, hpriv, board_idx);
+ if (rc)
+ goto done;
+
+ n_hc = mv_get_hc_count(probe_ent->host_flags);
+ probe_ent->n_ports = MV_PORTS_PER_HC * n_hc;
+
+ for (port = 0; port < probe_ent->n_ports; port++)
+ hpriv->ops->read_preamp(hpriv, port, mmio);
+
+ rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
+ if (rc)
+ goto done;
+
+ hpriv->ops->reset_flash(hpriv, mmio);
+ hpriv->ops->reset_bus(pdev, mmio);
+ hpriv->ops->enable_leds(hpriv, mmio);
+
+ for (port = 0; port < probe_ent->n_ports; port++) {
+ if (IS_60XX(hpriv)) {
+ void __iomem *port_mmio = mv_port_base(mmio, port);
+
+ u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
+ ifctl |= (1 << 7); /* enable gen2i speed */
+ ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
+ writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
+ }
+
+ hpriv->ops->phy_errata(hpriv, mmio, port);
+ }
+
+ for (port = 0; port < probe_ent->n_ports; port++) {
+ void __iomem *port_mmio = mv_port_base(mmio, port);
+ mv_port_init(&probe_ent->port[port], port_mmio);
+ }
+
+ for (hc = 0; hc < n_hc; hc++) {
+ void __iomem *hc_mmio = mv_hc_base(mmio, hc);
+
+ 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));
+
+ /* Clear any currently outstanding hc interrupt conditions */
+ writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
+ }
+
+ /* Clear any currently outstanding host interrupt conditions */
+ writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
+
+ /* and unmask interrupt generation for host regs */
+ writelfl(PCI_UNMASK_ALL_IRQS, mmio + PCI_IRQ_MASK_OFS);
+ writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
+
+ VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
+ "PCI int cause/mask=0x%08x/0x%08x\n",
+ readl(mmio + HC_MAIN_IRQ_CAUSE_OFS),
+ readl(mmio + HC_MAIN_IRQ_MASK_OFS),
+ readl(mmio + PCI_IRQ_CAUSE_OFS),
+ readl(mmio + PCI_IRQ_MASK_OFS));
+
+done:
+ return rc;
+}
+
+/**
+ * mv_print_info - Dump key info to kernel log for perusal.
+ * @probe_ent: early data struct representing the host
+ *
+ * FIXME: complete this.
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static void mv_print_info(struct ata_probe_ent *probe_ent)
+{
+ struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
+ struct mv_host_priv *hpriv = probe_ent->private_data;
+ u8 rev_id, scc;
+ const char *scc_s;
+
+ /* Use this to determine the HW stepping of the chip so we know
+ * what errata to workaround
+ */
+ pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
+
+ pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
+ if (scc == 0)
+ scc_s = "SCSI";
+ else if (scc == 0x01)
+ scc_s = "RAID";
+ else
+ scc_s = "unknown";
+
+ dev_printk(KERN_INFO, &pdev->dev,
+ "%u slots %u ports %s mode IRQ via %s\n",
+ (unsigned)MV_MAX_Q_DEPTH, probe_ent->n_ports,
+ scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
+}
+
+/**
+ * mv_init_one - handle a positive probe of a Marvell host
+ * @pdev: PCI device found
+ * @ent: PCI device ID entry for the matched host
+ *
+ * LOCKING:
+ * Inherited from caller.
+ */
+static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ static int printed_version = 0;
+ struct ata_probe_ent *probe_ent = NULL;
+ struct mv_host_priv *hpriv;
+ unsigned int board_idx = (unsigned int)ent->driver_data;
+ void __iomem *mmio_base;
+ int pci_dev_busy = 0, rc;
+
+ if (!printed_version++)
+ dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
+
+ rc = pci_enable_device(pdev);
+ if (rc) {
+ return rc;
+ }
+ pci_set_master(pdev);
+
+ rc = pci_request_regions(pdev, DRV_NAME);
+ if (rc) {
+ pci_dev_busy = 1;
+ goto err_out;
+ }
+
+ probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
+ if (probe_ent == NULL) {
+ rc = -ENOMEM;
+ goto err_out_regions;
+ }
+
+ memset(probe_ent, 0, sizeof(*probe_ent));
+ probe_ent->dev = pci_dev_to_dev(pdev);
+ INIT_LIST_HEAD(&probe_ent->node);
+
+ mmio_base = pci_iomap(pdev, MV_PRIMARY_BAR, 0);
+ if (mmio_base == NULL) {
+ rc = -ENOMEM;
+ goto err_out_free_ent;
+ }
+
+ hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
+ if (!hpriv) {
+ rc = -ENOMEM;
+ goto err_out_iounmap;
+ }
+ memset(hpriv, 0, sizeof(*hpriv));
+
+ probe_ent->sht = mv_port_info[board_idx].sht;
+ probe_ent->host_flags = mv_port_info[board_idx].host_flags;
+ probe_ent->pio_mask = mv_port_info[board_idx].pio_mask;
+ probe_ent->udma_mask = mv_port_info[board_idx].udma_mask;
+ probe_ent->port_ops = mv_port_info[board_idx].port_ops;
+
+ probe_ent->irq = pdev->irq;
+ probe_ent->irq_flags = IRQF_SHARED;
+ probe_ent->mmio_base = mmio_base;
+ probe_ent->private_data = hpriv;
+
+ /* initialize adapter */
+ rc = mv_init_host(pdev, probe_ent, board_idx);
+ if (rc) {
+ goto err_out_hpriv;
+ }
+
+ /* Enable interrupts */
+ if (msi && pci_enable_msi(pdev) == 0) {
+ hpriv->hp_flags |= MV_HP_FLAG_MSI;
+ } else {
+ pci_intx(pdev, 1);
+ }
+
+ mv_dump_pci_cfg(pdev, 0x68);
+ mv_print_info(probe_ent);
+
+ if (ata_device_add(probe_ent) == 0) {
+ rc = -ENODEV; /* No devices discovered */
+ goto err_out_dev_add;
+ }
+
+ kfree(probe_ent);
+ return 0;
+
+err_out_dev_add:
+ if (MV_HP_FLAG_MSI & hpriv->hp_flags) {
+ pci_disable_msi(pdev);
+ } else {
+ pci_intx(pdev, 0);
+ }
+err_out_hpriv:
+ kfree(hpriv);
+err_out_iounmap:
+ pci_iounmap(pdev, mmio_base);
+err_out_free_ent:
+ kfree(probe_ent);
+err_out_regions:
+ pci_release_regions(pdev);
+err_out:
+ if (!pci_dev_busy) {
+ pci_disable_device(pdev);
+ }
+
+ return rc;
+}
+
+static int __init mv_init(void)
+{
+ return pci_register_driver(&mv_pci_driver);
+}
+
+static void __exit mv_exit(void)
+{
+ pci_unregister_driver(&mv_pci_driver);
+}
+
+MODULE_AUTHOR("Brett Russ");
+MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
+MODULE_VERSION(DRV_VERSION);
+
+module_param(msi, int, 0444);
+MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
+
+module_init(mv_init);
+module_exit(mv_exit);
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