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[SCSI] aic79xx: use dma_get_required_mask()

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As originally noted by Frederic Temporelli, the aic79xx supports 64
bit addressing, but the initialization code of the driver is wrong: it
tests the available memory size instead of testing the maximum
available memory address.

This patch uses the correct dma_get_required_mask() macros to
determine the correct addressing method.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: Xavier Bru <xavier.bru@bull.net>
CC: Frederic Temporelli <frederic.temporelli@bull.net>

cosmetic fixes
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Hannes Reinecke 2007-02-07 09:47:44 +01:00 committed by James Bottomley
parent 5504802117
commit 19966769f9
3 changed files with 9 additions and 21 deletions
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9
drivers/scsi/aic7xxx/aic79xx_osm.c
View File

@ -1126,15 +1126,6 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
return 0;
}
uint64_t
ahd_linux_get_memsize(void)
{
struct sysinfo si;
si_meminfo(&si);
return ((uint64_t)si.totalram << PAGE_SHIFT);
}
/*
* Place the SCSI bus into a known state by either resetting it,
* or forcing transfer negotiations on the next command to any

2
drivers/scsi/aic7xxx/aic79xx_osm.h
View File

@ -496,8 +496,6 @@ ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count)
int ahd_linux_register_host(struct ahd_softc *,
struct scsi_host_template *);
uint64_t ahd_linux_get_memsize(void);
/*************************** Pretty Printing **********************************/
struct info_str {
char *buffer;

19
drivers/scsi/aic7xxx/aic79xx_osm_pci.c
View File

@ -132,6 +132,7 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct ahd_pci_identity *entry;
char *name;
int error;
struct device *dev = &pdev->dev;
pci = pdev;
entry = ahd_find_pci_device(pci);
@ -161,20 +162,18 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
pci_set_master(pdev);
if (sizeof(dma_addr_t) > 4) {
uint64_t memsize;
const uint64_t mask_39bit = 0x7FFFFFFFFFULL;
const u64 required_mask = dma_get_required_mask(dev);
memsize = ahd_linux_get_memsize();
if (memsize >= 0x8000000000ULL
&& pci_set_dma_mask(pdev, DMA_64BIT_MASK) == 0) {
if (required_mask > DMA_39BIT_MASK &&
dma_set_mask(dev, DMA_64BIT_MASK) == 0)
ahd->flags |= AHD_64BIT_ADDRESSING;
} else if (memsize > 0x80000000
&& pci_set_dma_mask(pdev, mask_39bit) == 0) {
else if (required_mask > DMA_32BIT_MASK &&
dma_set_mask(dev, DMA_39BIT_MASK) == 0)
ahd->flags |= AHD_39BIT_ADDRESSING;
}
else
dma_set_mask(dev, DMA_32BIT_MASK);
} else {
pci_set_dma_mask(pdev, DMA_32BIT_MASK);
dma_set_mask(dev, DMA_32BIT_MASK);
}
ahd->dev_softc = pci;
error = ahd_pci_config(ahd, entry);