pasemi_mac: rework ring management
pasemi_mac: rework ring management
Rework ring management, switching to an opaque ring format instead of
the struct-based descriptor+pointer setup, since it will be needed for
SG support.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h
index c52cfcb..5a896aa 100644
--- a/drivers/net/pasemi_mac.h
+++ b/drivers/net/pasemi_mac.h
@@ -28,25 +28,25 @@
struct pasemi_mac_txring {
spinlock_t lock;
- struct pas_dma_xct_descr *desc;
+ u64 *ring;
dma_addr_t dma;
unsigned int size;
unsigned int next_to_fill;
unsigned int next_to_clean;
- struct pasemi_mac_buffer *desc_info;
+ struct pasemi_mac_buffer *ring_info;
char irq_name[10]; /* "eth%d tx" */
};
struct pasemi_mac_rxring {
spinlock_t lock;
- struct pas_dma_xct_descr *desc; /* RX channel descriptor ring */
+ u64 *ring; /* RX channel descriptor ring */
dma_addr_t dma;
u64 *buffers; /* RX interface buffer ring */
dma_addr_t buf_dma;
unsigned int size;
unsigned int next_to_fill;
unsigned int next_to_clean;
- struct pasemi_mac_buffer *desc_info;
+ struct pasemi_mac_buffer *ring_info;
char irq_name[10]; /* "eth%d rx" */
};
@@ -88,7 +88,7 @@
char phy_id[BUS_ID_SIZE];
};
-/* Software status descriptor (desc_info) */
+/* Software status descriptor (ring_info) */
struct pasemi_mac_buffer {
struct sk_buff *skb;
dma_addr_t dma;
@@ -101,20 +101,7 @@
u64 tx_sta[20];
};
-/* descriptor structure */
-struct pas_dma_xct_descr {
- union {
- u64 mactx;
- u64 macrx;
- };
- union {
- u64 ptr;
- u64 rxb;
- };
-};
-
/* MAC CFG register offsets */
-
enum {
PAS_MAC_CFG_PCFG = 0x80,
PAS_MAC_CFG_TXP = 0x98,