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sata_mv: cosmetic preparations for IRQ coalescing 

Various cosmetic changes in preparation for the IRQ coalescing feature.

Note that the various MV_IRQ_COAL_* definitions are restored/renamed
in the folloup patch which adds IRQ coalescing to the driver.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Mark Lord 2009-03-10 18:51:04 -04:00 committed by Jeff Garzik
parent 9223d01b2f
commit 40f21b1124
1 changed files with 27 additions and 35 deletions
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62
drivers/ata/sata_mv.c
View File

@ -1,10 +1,13 @@
/*
* sata_mv.c - Marvell SATA support
*
* Copyright 2008: Marvell Corporation, all rights reserved.
* Copyright 2008-2009: Marvell Corporation, all rights reserved.
* Copyright 2005: EMC Corporation, all rights reserved.
* Copyright 2005 Red Hat, Inc. All rights reserved.
*
* Originally written by Brett Russ.
* Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>.
*
* Please ALWAYS copy linux-ide@vger.kernel.org on emails.
*
* This program is free software; you can redistribute it and/or modify
@ -25,8 +28,6 @@
/*
* sata_mv TODO list:
*
* --> Errata workaround for NCQ device errors.
*
* --> More errata workarounds for PCI-X.
*
* --> Complete a full errata audit for all chipsets to identify others.
@ -68,6 +69,16 @@
#define DRV_NAME "sata_mv"
#define DRV_VERSION "1.26"
/*
* module options
*/
static int msi;
#ifdef CONFIG_PCI
module_param(msi, int, S_IRUGO);
MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
#endif
enum {
/* BAR's are enumerated in terms of pci_resource_start() terms */
MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
@ -78,12 +89,6 @@ enum {
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_OFS = 0x1046c,
@ -115,16 +120,14 @@ enum {
/* 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_MMIO | ATA_FLAG_PIO_POLLING,
MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI,
MV_GEN_II_FLAGS = MV_COMMON_FLAGS | MV_FLAG_IRQ_COALESCE |
ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
ATA_FLAG_NCQ,
MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ |
ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA,
MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN,
@ -179,16 +182,16 @@ enum {
PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64,
SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020,
SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024,
ERR_IRQ = (1 << 0), /* shift by port # */
DONE_IRQ = (1 << 1), /* shift by port # */
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 */
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_3_COAL_DONE = (1 << 8),
PORTS_4_7_COAL_DONE = (1 << 17),
PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */
TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */
PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */
PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */
ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */
GPIO_INT = (1 << 22),
SELF_INT = (1 << 23),
TWSI_INT = (1 << 24),
@ -621,7 +624,7 @@ static struct ata_port_operations mv6_ops = {
.softreset = mv_softreset,
.error_handler = mv_pmp_error_handler,
.sff_check_status = mv_sff_check_status,
.sff_check_status = mv_sff_check_status,
.sff_irq_clear = mv_sff_irq_clear,
.check_atapi_dma = mv_check_atapi_dma,
.bmdma_setup = mv_bmdma_setup,
@ -1255,8 +1258,8 @@ static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
}
/**
* mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma
* @ap: Port being initialized
* mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma
* @ap: Port being initialized
*
* There are two DMA modes on these chips: basic DMA, and EDMA.
*
@ -2000,7 +2003,7 @@ static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
struct mv_host_priv *hpriv = ap->host->private_data;
/*
* Workaround for 88SX60x1 FEr SATA#25 (part 2).
*
*
* After any NCQ error, the READ_LOG_EXT command
* from libata-eh *must* use mv_qc_issue_fis().
* Otherwise it might fail, due to chip errata.
@ -3704,12 +3707,6 @@ static struct pci_driver mv_pci_driver = {
.remove = ata_pci_remove_one,
};
/*
* module options
*/
static int msi; /* Use PCI msi; either zero (off, default) or non-zero */
/* move to PCI layer or libata core? */
static int pci_go_64(struct pci_dev *pdev)
{
@ -3891,10 +3888,5 @@ MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
MODULE_VERSION(DRV_VERSION);
MODULE_ALIAS("platform:" DRV_NAME);
#ifdef CONFIG_PCI
module_param(msi, int, 0444);
MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
#endif
module_init(mv_init);
module_exit(mv_exit);