[intel] Update driver to use DMA API

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 36 insertions, 15 deletions

diff --git a/src/drivers/net/intel.h b/src/drivers/net/intel.h
index 9d740efc3..731b5f225 100644
--- a/src/drivers/net/intel.h
+++ b/src/drivers/net/intel.h
@@ -12,6 +12,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 #include <stdint.h>
 #include <ipxe/if_ether.h>
 #include <ipxe/nvs.h>
+#include <ipxe/dma.h>
 
 /** Intel BAR size */
 #define INTEL_BAR_SIZE ( 128 * 1024 )
@@ -212,6 +213,8 @@ union intel_receive_address {
 struct intel_ring {
 	/** Descriptors */
 	struct intel_descriptor *desc;
+	/** Descriptor ring DMA mapping */
+	struct dma_mapping map;
 	/** Producer index */
 	unsigned int prod;
 	/** Consumer index */
@@ -273,10 +276,30 @@ intel_init_mbox ( struct intel_mailbox *mbox, unsigned int ctrl,
 	mbox->mem = mem;
 }
 
+/** Transmit ring */
+struct intel_tx_ring {
+	/** Descriptor ring */
+	struct intel_ring ring;
+	/** DMA mappings */
+	struct dma_mapping map[INTEL_NUM_TX_DESC];
+};
+
+/** Receive ring */
+struct intel_rx_ring {
+	/** Descriptor ring */
+	struct intel_ring ring;
+	/** I/O buffers */
+	struct io_buffer *iobuf[INTEL_NUM_RX_DESC];
+	/** DMA mappings */
+	struct dma_mapping map[INTEL_NUM_RX_DESC];
+};
+
 /** An Intel network card */
 struct intel_nic {
 	/** Registers */
 	void *regs;
+	/** DMA device */
+	struct dma_device *dma;
 	/** Port number (for multi-port devices) */
 	unsigned int port;
 	/** Flags */
@@ -294,12 +317,10 @@ struct intel_nic {
 	/** Mailbox */
 	struct intel_mailbox mbox;
 
-	/** Transmit descriptor ring */
-	struct intel_ring tx;
-	/** Receive descriptor ring */
-	struct intel_ring rx;
-	/** Receive I/O buffers */
-	struct io_buffer *rx_iobuf[INTEL_NUM_RX_DESC];
+	/** Transmit ring */
+	struct intel_tx_ring tx;
+	/** Receive ring */
+	struct intel_rx_ring rx;
 };
 
 /** Driver flags */
@@ -328,14 +349,14 @@ static inline void intel_diag ( struct intel_nic *intel ) {
 
 	DBGC ( intel, "INTEL %p TX %04x(%02x)/%04x(%02x) "
 	       "RX %04x(%02x)/%04x(%02x)\n", intel,
-	       ( intel->tx.cons & 0xffff ),
-	       readl ( intel->regs + intel->tx.reg + INTEL_xDH ),
-	       ( intel->tx.prod & 0xffff ),
-	       readl ( intel->regs + intel->tx.reg + INTEL_xDT ),
-	       ( intel->rx.cons & 0xffff ),
-	       readl ( intel->regs + intel->rx.reg + INTEL_xDH ),
-	       ( intel->rx.prod & 0xffff ),
-	       readl ( intel->regs + intel->rx.reg + INTEL_xDT ) );
+	       ( intel->tx.ring.cons & 0xffff ),
+	       readl ( intel->regs + intel->tx.ring.reg + INTEL_xDH ),
+	       ( intel->tx.ring.prod & 0xffff ),
+	       readl ( intel->regs + intel->tx.ring.reg + INTEL_xDT ),
+	       ( intel->rx.ring.cons & 0xffff ),
+	       readl ( intel->regs + intel->rx.ring.reg + INTEL_xDH ),
+	       ( intel->rx.ring.prod & 0xffff ),
+	       readl ( intel->regs + intel->rx.ring.reg + INTEL_xDT ) );
 }
 
 extern void intel_describe_tx ( struct intel_descriptor *tx,
@@ -350,7 +371,7 @@ extern int intel_create_ring ( struct intel_nic *intel,
 extern void intel_destroy_ring ( struct intel_nic *intel,
 				 struct intel_ring *ring );
 extern void intel_refill_rx ( struct intel_nic *intel );
-extern void intel_empty_rx ( struct intel_nic *intel );
+extern void intel_flush ( struct intel_nic *intel );
 extern int intel_transmit ( struct net_device *netdev,
 			    struct io_buffer *iobuf );
 extern void intel_poll_tx ( struct net_device *netdev );