Commit e7a0453e authored by David S. Miller's avatar David S. Miller

[SPARC64] PCI: Size TSB correctly on SUN4V.

Forgot to multiply by 8 * 1024, oops.  Correct the size constant when
the virtual-dma arena is 2GB in size, it should bet 256 not 128.

Finally, log some info about the TSB at probe time.
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent db33f9bc
......@@ -102,6 +102,7 @@ static void *pci_4v_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr
first_page = __get_free_pages(GFP_ATOMIC, order);
if (first_page == 0UL)
return NULL;
memset((char *)first_page, 0, PAGE_SIZE << order);
pcp = pdev->sysdata;
......@@ -805,11 +806,11 @@ static void pbm_register_toplevel_resources(struct pci_controller_info *p,
&pbm->mem_space);
}
static void probe_existing_entries(struct pci_pbm_info *pbm,
struct pci_iommu *iommu)
static unsigned long probe_existing_entries(struct pci_pbm_info *pbm,
struct pci_iommu *iommu)
{
struct pci_iommu_arena *arena = &iommu->arena;
unsigned long i;
unsigned long i, cnt = 0;
u32 devhandle;
devhandle = pbm->devhandle;
......@@ -819,9 +820,13 @@ static void probe_existing_entries(struct pci_pbm_info *pbm,
ret = pci_sun4v_iommu_getmap(devhandle,
HV_PCI_TSBID(0, i),
&io_attrs, &ra);
if (ret == HV_EOK)
if (ret == HV_EOK) {
cnt++;
__set_bit(i, arena->map);
}
}
return cnt;
}
static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
......@@ -853,7 +858,7 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
case 0x80000000:
dma_mask |= 0x7fffffff;
tsbsize = 128;
tsbsize = 256;
break;
default:
......@@ -861,6 +866,8 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
prom_halt();
};
tsbsize *= (8 * 1024);
num_tsb_entries = tsbsize / sizeof(iopte_t);
dma_offset = vdma[0];
......@@ -882,7 +889,10 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
memset(iommu->arena.map, 0, sz);
iommu->arena.limit = num_tsb_entries;
probe_existing_entries(pbm, iommu);
sz = probe_existing_entries(pbm, iommu);
printk("%s: TSB entries [%lu], existing mapings [%lu]\n",
pbm->name, num_tsb_entries, sz);
}
static void pci_sun4v_get_bus_range(struct pci_pbm_info *pbm)
......
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