Commit 3d0eab67 authored by Stephen M. Cameron's avatar Stephen M. Cameron Committed by James Bottomley
Browse files

[SCSI] hpsa: factor out hpsa_p600_dma_prefetch_quirk


Signed-off-by: default avatarStephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent f7c39101
......@@ -3396,6 +3396,20 @@ static inline void hpsa_enable_scsi_prefetch(struct ctlr_info *h)
#endif
}
/* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
* in a prefetch beyond physical memory.
*/
static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
{
u32 dma_prefetch;
if (h->board_id != 0x3225103C)
return;
dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
dma_prefetch |= 0x8000;
writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
}
static int __devinit hpsa_pci_init(struct ctlr_info *h)
{
int i, prod_index, err;
......@@ -3444,17 +3458,7 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h)
goto err_out_free_res;
}
hpsa_enable_scsi_prefetch(h);
/* Disabling DMA prefetch for the P600
* An ASIC bug may result in a prefetch beyond
* physical memory.
*/
if (h->board_id == 0x3225103C) {
u32 dma_prefetch;
dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
dma_prefetch |= 0x8000;
writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
}
hpsa_p600_dma_prefetch_quirk(h);
h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
/* Update the field, and then ring the doorbell */
......
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