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Commit 40f21b11 authored by Mark Lord's avatar Mark Lord Committed by Jeff Garzik
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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: default avatarMark Lord <mlord@pobox.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 9223d01b

drivers/ata/sata_mv.c

+27 −35
Original line number Diff line number Diff line 
/*

 * 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),
@@ -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);