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