diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 5 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 23 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 8 |
3 files changed, 28 insertions, 8 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index b22b58b33400..dab901b4f0f9 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3776,11 +3776,6 @@ EXPORT_SYMBOL(amd_iommu_device_info); static struct irq_chip amd_ir_chip; -#define DTE_IRQ_PHYS_ADDR_MASK (((1ULL << 45)-1) << 6) -#define DTE_IRQ_REMAP_INTCTL (2ULL << 60) -#define DTE_IRQ_TABLE_LEN (8ULL << 1) -#define DTE_IRQ_REMAP_ENABLE 1ULL - static void set_dte_irq_entry(u16 devid, struct irq_remap_table *table) { u64 dte; diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 959c25d997e1..d08ad74b0928 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -852,12 +852,12 @@ static int get_dev_entry_bit(u16 devid, u8 bit) static bool copy_device_table(void) { + u64 int_ctl, int_tab_len, entry, last_entry = 0; struct dev_table_entry *old_devtb = NULL; u32 lo, hi, devid, old_devtb_size; phys_addr_t old_devtb_phys; - u64 entry, last_entry = 0; struct amd_iommu *iommu; - u16 dom_id, dte_v; + u16 dom_id, dte_v, irq_v; gfp_t gfp_flag; if (!amd_iommu_pre_enabled) @@ -901,8 +901,25 @@ static bool copy_device_table(void) old_dev_tbl_cpy[devid] = old_devtb[devid]; dom_id = old_devtb[devid].data[1] & DEV_DOMID_MASK; dte_v = old_devtb[devid].data[0] & DTE_FLAG_V; - if (dte_v && dom_id) + + if (dte_v && dom_id) { + old_dev_tbl_cpy[devid].data[0] = old_devtb[devid].data[0]; + old_dev_tbl_cpy[devid].data[1] = old_devtb[devid].data[1]; __set_bit(dom_id, amd_iommu_pd_alloc_bitmap); + } + + irq_v = old_devtb[devid].data[2] & DTE_IRQ_REMAP_ENABLE; + int_ctl = old_devtb[devid].data[2] & DTE_IRQ_REMAP_INTCTL_MASK; + int_tab_len = old_devtb[devid].data[2] & DTE_IRQ_TABLE_LEN_MASK; + if (irq_v && (int_ctl || int_tab_len)) { + if ((int_ctl != DTE_IRQ_REMAP_INTCTL) || + (int_tab_len != DTE_IRQ_TABLE_LEN)) { + pr_err("Wrong old irq remapping flag: %#x\n", devid); + return false; + } + + old_dev_tbl_cpy[devid].data[2] = old_devtb[devid].data[2]; + } } memunmap(old_devtb); diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index a7f6cf8c841e..f0979183ec9b 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -250,6 +250,14 @@ #define GA_GUEST_NR 0x1 +/* Bit value definition for dte irq remapping fields*/ +#define DTE_IRQ_PHYS_ADDR_MASK (((1ULL << 45)-1) << 6) +#define DTE_IRQ_REMAP_INTCTL_MASK (0x3ULL << 60) +#define DTE_IRQ_TABLE_LEN_MASK (0xfULL << 1) +#define DTE_IRQ_REMAP_INTCTL (2ULL << 60) +#define DTE_IRQ_TABLE_LEN (8ULL << 1) +#define DTE_IRQ_REMAP_ENABLE 1ULL + #define PAGE_MODE_NONE 0x00 #define PAGE_MODE_1_LEVEL 0x01 #define PAGE_MODE_2_LEVEL 0x02 |