diff options
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 10 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_init.c | 8 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 4 |
3 files changed, 5 insertions, 17 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index fe112bbaae88..02b8ad761600 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -534,7 +534,7 @@ static void iommu_poll_events(struct amd_iommu *iommu) while (head != tail) { iommu_print_event(iommu, iommu->evt_buf + head); - head = (head + EVENT_ENTRY_SIZE) % iommu->evt_buf_size; + head = (head + EVENT_ENTRY_SIZE) % EVT_BUFFER_SIZE; } writel(head, iommu->mmio_base + MMIO_EVT_HEAD_OFFSET); @@ -684,7 +684,7 @@ static void copy_cmd_to_buffer(struct amd_iommu *iommu, u8 *target; target = iommu->cmd_buf + tail; - tail = (tail + sizeof(*cmd)) % iommu->cmd_buf_size; + tail = (tail + sizeof(*cmd)) % CMD_BUFFER_SIZE; /* Copy command to buffer */ memcpy(target, cmd, sizeof(*cmd)); @@ -851,15 +851,13 @@ static int iommu_queue_command_sync(struct amd_iommu *iommu, u32 left, tail, head, next_tail; unsigned long flags; - WARN_ON(iommu->cmd_buf_size & CMD_BUFFER_UNINITIALIZED); - again: spin_lock_irqsave(&iommu->lock, flags); head = readl(iommu->mmio_base + MMIO_CMD_HEAD_OFFSET); tail = readl(iommu->mmio_base + MMIO_CMD_TAIL_OFFSET); - next_tail = (tail + sizeof(*cmd)) % iommu->cmd_buf_size; - left = (head - next_tail) % iommu->cmd_buf_size; + next_tail = (tail + sizeof(*cmd)) % CMD_BUFFER_SIZE; + left = (head - next_tail) % CMD_BUFFER_SIZE; if (left <= 2) { struct iommu_cmd sync_cmd; diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 3ba1ee709824..3a977a751dad 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -521,8 +521,6 @@ static u8 * __init alloc_command_buffer(struct amd_iommu *iommu) if (cmd_buf == NULL) return NULL; - iommu->cmd_buf_size = CMD_BUFFER_SIZE | CMD_BUFFER_UNINITIALIZED; - return cmd_buf; } @@ -557,13 +555,11 @@ static void iommu_enable_command_buffer(struct amd_iommu *iommu) &entry, sizeof(entry)); amd_iommu_reset_cmd_buffer(iommu); - iommu->cmd_buf_size &= ~(CMD_BUFFER_UNINITIALIZED); } static void __init free_command_buffer(struct amd_iommu *iommu) { - free_pages((unsigned long)iommu->cmd_buf, - get_order(iommu->cmd_buf_size & ~(CMD_BUFFER_UNINITIALIZED))); + free_pages((unsigned long)iommu->cmd_buf, get_order(CMD_BUFFER_SIZE)); } /* allocates the memory where the IOMMU will log its events to */ @@ -575,8 +571,6 @@ static u8 * __init alloc_event_buffer(struct amd_iommu *iommu) if (iommu->evt_buf == NULL) return NULL; - iommu->evt_buf_size = EVT_BUFFER_SIZE; - return iommu->evt_buf; } diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index 3026b3448b98..921b2e95161b 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -528,11 +528,7 @@ struct amd_iommu { /* command buffer virtual address */ u8 *cmd_buf; - /* size of command buffer */ - u32 cmd_buf_size; - /* size of event buffer */ - u32 evt_buf_size; /* event buffer virtual address */ u8 *evt_buf; |