drm/vmwgfx: Cleanup fifo mmio handling

Going forward the svga device might reuse mmio for general
register accesses, in order to prepare for that we need to
cleanup our naming and handling of fifo specific mmio reads
and writes. As part of this work lets switch to managed
mapping of the fifo mmio to make the error handling cleaner.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Link: https://patchwork.freedesktop.org/patch/414045/?series=85516&rev=2

1 files changed, 16 insertions, 15 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index f8e579225fb8..912812a35d33 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -496,12 +496,13 @@ struct vmw_private {
 
 	struct drm_vma_offset_manager vma_manager;
 	unsigned long vmw_chipset;
-	unsigned int io_start;
-	uint32_t vram_start;
-	uint32_t vram_size;
-	uint32_t prim_bb_mem;
-	uint32_t mmio_start;
-	uint32_t mmio_size;
+	resource_size_t io_start;
+	resource_size_t vram_start;
+	resource_size_t vram_size;
+	resource_size_t prim_bb_mem;
+	u32 *fifo_mem;
+	resource_size_t fifo_mem_start;
+	resource_size_t fifo_mem_size;
 	uint32_t fb_max_width;
 	uint32_t fb_max_height;
 	uint32_t texture_max_width;
@@ -510,7 +511,6 @@ struct vmw_private {
 	uint32_t stdu_max_height;
 	uint32_t initial_width;
 	uint32_t initial_height;
-	u32 *mmio_virt;
 	uint32_t capabilities;
 	uint32_t capabilities2;
 	uint32_t max_gmr_ids;
@@ -1575,28 +1575,29 @@ static inline void vmw_fifo_resource_dec(struct vmw_private *dev_priv)
 }
 
 /**
- * vmw_mmio_read - Perform a MMIO read from volatile memory
+ * vmw_fifo_mem_read - Perform a MMIO read from the fifo memory
  *
- * @addr: The address to read from
+ * @fifo_reg: The fifo register to read from
  *
  * This function is intended to be equivalent to ioread32() on
  * memremap'd memory, but without byteswapping.
  */
-static inline u32 vmw_mmio_read(u32 *addr)
+static inline u32 vmw_fifo_mem_read(struct vmw_private *vmw, uint32 fifo_reg)
 {
-	return READ_ONCE(*addr);
+	return READ_ONCE(*(vmw->fifo_mem + fifo_reg));
 }
 
 /**
- * vmw_mmio_write - Perform a MMIO write to volatile memory
+ * vmw_fifo_mem_write - Perform a MMIO write to volatile memory
  *
- * @addr: The address to write to
+ * @addr: The fifo register to write to
  *
  * This function is intended to be equivalent to iowrite32 on
  * memremap'd memory, but without byteswapping.
  */
-static inline void vmw_mmio_write(u32 value, u32 *addr)
+static inline void vmw_fifo_mem_write(struct vmw_private *vmw, u32 fifo_reg,
+				      u32 value)
 {
-	WRITE_ONCE(*addr, value);
+	WRITE_ONCE(*(vmw->fifo_mem + fifo_reg), value);
 }
 #endif