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| author | Hannes Reinecke <hare@suse.de> | 2007-02-07 09:47:44 +0100 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-02-10 12:58:06 -0600 |
| commit | 19966769f9fc1968dcf5bffec2e53f7f40100872 (patch) | |
| tree | c3ad06b0e898a9faa9a8ae61b50d29d99e043fc7 /drivers/scsi/aic7xxx/aic79xx_osm_pci.c | |
| parent | 55048021177eee956af88333ec4565919c8567e4 (diff) | |
| download | kernel_samsung_espresso10-19966769f9fc1968dcf5bffec2e53f7f40100872.tar.gz kernel_samsung_espresso10-19966769f9fc1968dcf5bffec2e53f7f40100872.tar.bz2 kernel_samsung_espresso10-19966769f9fc1968dcf5bffec2e53f7f40100872.zip | |
[SCSI] aic79xx: use dma_get_required_mask()
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>
Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx_osm_pci.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx_osm_pci.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c index 1a3ab6aa856..c62ce41f279 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c @@ -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); |