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ide: remove ->init_setup_dma from ide_pci_device_t (take 2)

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* Make ide_pci_device_t.host_flags u32 and add IDE_HFLAG_CS5520 host flag.

* Pass ide_pci_device_t *d to setup-pci.c::ide_get_or_set_dma_base()
  and use d->name instead of hwif->cds->name.

* Set IDE_HFLAG_CS5520 host flag in cs5520 host driver and use it in
  ide_get_or_set_dma_base() to find out which PCI BAR to use, remove no longer
  needed cs5520.c::cs5520_init_setup_dma() and ide_pci_device_t.init_setup_dma.

  This fixes PCI bus-mastering not being checked for CS5510/CS5520 hosts.

v2:
* It is wrong to check simplex bits on CS5510/CS5520 as v1 did.
  (Noticed by Alan).

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-10-19 00:30:07 +02:00
parent 47b687882c
commit 9ffcf364f9
3 changed files with 20 additions and 34 deletions
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14
drivers/ide/pci/cs5520.c
View File

@ -105,18 +105,6 @@ static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed)
cs5520_set_pio_mode(drive, 0);
}
/*
* We provide a callback for our nonstandard DMA location
*/
static void __devinit cs5520_init_setup_dma(struct pci_dev *dev, ide_pci_device_t *d, ide_hwif_t *hwif)
{
unsigned long bmide = pci_resource_start(dev, 2); /* Not the usual 4 */
if(hwif->mate && hwif->mate->dma_base) /* Second channel at primary + 8 */
bmide += 8;
ide_setup_dma(hwif, bmide, 8);
}
/*
* We wrap the DMA activate to set the vdma flag. This is needed
* so that the IDE DMA layer issues PIO not DMA commands over the
@ -150,9 +138,9 @@ static void __devinit init_hwif_cs5520(ide_hwif_t *hwif)
#define DECLARE_CS_DEV(name_str) \
{ \
.name = name_str, \
.init_setup_dma = cs5520_init_setup_dma, \
.init_hwif = init_hwif_cs5520, \
.host_flags = IDE_HFLAG_ISA_PORTS | \
IDE_HFLAG_CS5520 | \
IDE_HFLAG_VDMA | \
IDE_HFLAG_NO_ATAPI_DMA | \
IDE_HFLAG_BOOTABLE, \

35
drivers/ide/setup-pci.c
View File

@ -147,6 +147,7 @@ static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name)
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
/**
* ide_get_or_set_dma_base - setup BMIBA
* @d: IDE pci device data
* @hwif: Interface
*
* Fetch the DMA Bus-Master-I/O-Base-Address (BMIBA) from PCI space.
@ -154,7 +155,7 @@ static int ide_setup_pci_baseregs (struct pci_dev *dev, const char *name)
* and enforce IDE simplex rules.
*/
static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
static unsigned long ide_get_or_set_dma_base(ide_pci_device_t *d, ide_hwif_t *hwif)
{
unsigned long dma_base = 0;
struct pci_dev *dev = hwif->pci_dev;
@ -165,14 +166,15 @@ static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
if (hwif->mate && hwif->mate->dma_base) {
dma_base = hwif->mate->dma_base - (hwif->channel ? 0 : 8);
} else {
dma_base = pci_resource_start(dev, 4);
if (!dma_base) {
printk(KERN_ERR "%s: dma_base is invalid\n",
hwif->cds->name);
}
u8 baridx = (d->host_flags & IDE_HFLAG_CS5520) ? 2 : 4;
dma_base = pci_resource_start(dev, baridx);
if (dma_base == 0)
printk(KERN_ERR "%s: DMA base is invalid\n", d->name);
}
if (dma_base) {
if ((d->host_flags & IDE_HFLAG_CS5520) == 0 && dma_base) {
u8 simplex_stat = 0;
dma_base += hwif->channel ? 8 : 0;
@ -188,8 +190,8 @@ static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
simplex_stat = hwif->INB(dma_base + 2);
if (simplex_stat & 0x80) {
printk(KERN_INFO "%s: simplex device: "
"DMA forced\n",
hwif->cds->name);
"DMA forced\n",
d->name);
}
break;
default:
@ -212,8 +214,8 @@ static unsigned long ide_get_or_set_dma_base (ide_hwif_t *hwif)
*/
if (hwif->mate && hwif->mate->dma_base) {
printk(KERN_INFO "%s: simplex device: "
"DMA disabled\n",
hwif->cds->name);
"DMA disabled\n",
d->name);
dma_base = 0;
}
}
@ -434,7 +436,7 @@ static void ide_hwif_setup_dma(struct pci_dev *dev, ide_pci_device_t *d, ide_hwi
if ((d->host_flags & IDE_HFLAG_NO_AUTODMA) == 0 ||
((dev->class >> 8) == PCI_CLASS_STORAGE_IDE &&
(dev->class & 0x80))) {
unsigned long dma_base = ide_get_or_set_dma_base(hwif);
unsigned long dma_base = ide_get_or_set_dma_base(d, hwif);
if (dma_base && !(pcicmd & PCI_COMMAND_MASTER)) {
/*
* Set up BM-DMA capability
@ -559,14 +561,9 @@ void ide_pci_setup_ports(struct pci_dev *dev, ide_pci_device_t *d, int pciirq, a
if (d->init_iops)
d->init_iops(hwif);
if (d->host_flags & IDE_HFLAG_NO_DMA)
goto bypass_legacy_dma;
if(d->init_setup_dma)
d->init_setup_dma(dev, d, hwif);
else
if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0)
ide_hwif_setup_dma(dev, d, hwif);
bypass_legacy_dma:
hwif->host_flags = d->host_flags;
hwif->pio_mask = d->pio_mask;

5
include/linux/ide.h
View File

@ -1252,6 +1252,8 @@ enum {
IDE_HFLAG_NO_DMA = (1 << 14),
/* check if host is PCI IDE device before allowing DMA */
IDE_HFLAG_NO_AUTODMA = (1 << 15),
/* host is CS5510/CS5520 */
IDE_HFLAG_CS5520 = (1 << 16),
};
#ifdef CONFIG_BLK_DEV_OFFBOARD
@ -1263,7 +1265,6 @@ enum {
typedef struct ide_pci_device_s {
char *name;
int (*init_setup)(struct pci_dev *, struct ide_pci_device_s *);
void (*init_setup_dma)(struct pci_dev *, struct ide_pci_device_s *, ide_hwif_t *);
unsigned int (*init_chipset)(struct pci_dev *, const char *);
void (*init_iops)(ide_hwif_t *);
void (*init_hwif)(ide_hwif_t *);
@ -1272,7 +1273,7 @@ typedef struct ide_pci_device_s {
ide_pci_enablebit_t enablebits[2];
unsigned int extra;
struct ide_pci_device_s *next;
u16 host_flags;
u32 host_flags;
u8 pio_mask;
u8 udma_mask;
} ide_pci_device_t;