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iommu/amd: Convert dev_table_entry to u64

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Convert the contents of 'struct dev_table_entry' to u64 to
allow updating the DTE wit 64bit writes as required by the
spec.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2011-11-09 12:06:03 +01:00
parent dc47ce90c3
commit ee6c286845
3 changed files with 18 additions and 16 deletions
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18
drivers/iommu/amd_iommu.c
View file

@ -365,8 +365,8 @@ static void dump_dte_entry(u16 devid)
{
int i;
for (i = 0; i < 8; ++i)
pr_err("AMD-Vi: DTE[%d]: %08x\n", i,
for (i = 0; i < 4; ++i)
pr_err("AMD-Vi: DTE[%d]: %016llx\n", i,
amd_iommu_dev_table[devid].data[i]);
}
@ -1583,19 +1583,22 @@ static bool dma_ops_domain(struct protection_domain *domain)
static void set_dte_entry(u16 devid, struct protection_domain *domain, bool ats)
{
u64 pte_root = virt_to_phys(domain->pt_root);
u32 flags = 0;
u64 flags = 0;
pte_root |= (domain->mode & DEV_ENTRY_MODE_MASK)
<< DEV_ENTRY_MODE_SHIFT;
pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | IOMMU_PTE_TV;
flags = amd_iommu_dev_table[devid].data[1];
if (ats)
flags |= DTE_FLAG_IOTLB;
amd_iommu_dev_table[devid].data[3] |= flags;
amd_iommu_dev_table[devid].data[2] = domain->id;
amd_iommu_dev_table[devid].data[1] = upper_32_bits(pte_root);
amd_iommu_dev_table[devid].data[0] = lower_32_bits(pte_root);
flags &= ~(0xffffUL);
flags |= domain->id;
amd_iommu_dev_table[devid].data[1] = flags;
amd_iommu_dev_table[devid].data[0] = pte_root;
}
static void clear_dte_entry(u16 devid)
@ -1603,7 +1606,6 @@ static void clear_dte_entry(u16 devid)
/* remove entry from the device table seen by the hardware */
amd_iommu_dev_table[devid].data[0] = IOMMU_PTE_P | IOMMU_PTE_TV;
amd_iommu_dev_table[devid].data[1] = 0;
amd_iommu_dev_table[devid].data[2] = 0;
amd_iommu_apply_erratum_63(devid);
}

12
drivers/iommu/amd_iommu_init.c
View file

@ -584,18 +584,18 @@ static void __init free_event_buffer(struct amd_iommu *iommu)
/* sets a specific bit in the device table entry. */
static void set_dev_entry_bit(u16 devid, u8 bit)
{
int i = (bit >> 5) & 0x07;
int _bit = bit & 0x1f;
int i = (bit >> 6) & 0x03;
int _bit = bit & 0x3f;
amd_iommu_dev_table[devid].data[i] |= (1 << _bit);
amd_iommu_dev_table[devid].data[i] |= (1UL << _bit);
}
static int get_dev_entry_bit(u16 devid, u8 bit)
{
int i = (bit >> 5) & 0x07;
int _bit = bit & 0x1f;
int i = (bit >> 6) & 0x03;
int _bit = bit & 0x3f;
return (amd_iommu_dev_table[devid].data[i] & (1 << _bit)) >> _bit;
return (amd_iommu_dev_table[devid].data[i] & (1UL << _bit)) >> _bit;
}

4
drivers/iommu/amd_iommu_types.h
View file

@ -230,7 +230,7 @@
#define IOMMU_PTE_IR (1ULL << 61)
#define IOMMU_PTE_IW (1ULL << 62)
#define DTE_FLAG_IOTLB 0x01
#define DTE_FLAG_IOTLB (0x01UL << 32)
#define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL)
#define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_P)
@ -484,7 +484,7 @@ extern struct list_head amd_iommu_pd_list;
* Structure defining one entry in the device table
*/
struct dev_table_entry {
u32 data[8];
u64 data[4];
};
/*