[PATCH] Add Myri-10G Ethernet driver

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Andrew J. Gallatin <gallatin@myri.com>

 drivers/net/Kconfig                            |   17
 drivers/net/Makefile                           |    1
 drivers/net/myri10ge/Makefile                  |    5
 drivers/net/myri10ge/myri10ge.c                | 2851 +++++++++++++++
 drivers/net/myri10ge/myri10ge_mcp.h            |  205 +
 drivers/net/myri10ge/myri10ge_mcp_gen_header.h |   58
 include/linux/pci_ids.h                        |    1
 7 files changed, 3138 insertions(+)
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/drivers/net/myri10ge/myri10ge_mcp.h b/drivers/net/myri10ge/myri10ge_mcp.h
new file mode 100644
index 000000000000..ac23e18db63d
--- /dev/null
+++ b/drivers/net/myri10ge/myri10ge_mcp.h
@@ -0,0 +1,205 @@
+#ifndef __MYRI10GE_MCP_H__
+#define __MYRI10GE_MCP_H__
+
+#define MXGEFW_VERSION_MAJOR	1
+#define MXGEFW_VERSION_MINOR	4
+
+/* 8 Bytes */
+struct mcp_dma_addr {
+	u32 high;
+	u32 low;
+};
+
+/* 4 Bytes */
+struct mcp_slot {
+	u16 checksum;
+	u16 length;
+};
+
+/* 64 Bytes */
+struct mcp_cmd {
+	u32 cmd;
+	u32 data0;		/* will be low portion if data > 32 bits */
+	/* 8 */
+	u32 data1;		/* will be high portion if data > 32 bits */
+	u32 data2;		/* currently unused.. */
+	/* 16 */
+	struct mcp_dma_addr response_addr;
+	/* 24 */
+	u8 pad[40];
+};
+
+/* 8 Bytes */
+struct mcp_cmd_response {
+	u32 data;
+	u32 result;
+};
+
+/* 
+ * flags used in mcp_kreq_ether_send_t:
+ * 
+ * The SMALL flag is only needed in the first segment. It is raised
+ * for packets that are total less or equal 512 bytes.
+ * 
+ * The CKSUM flag must be set in all segments.
+ * 
+ * The PADDED flags is set if the packet needs to be padded, and it
+ * must be set for all segments.
+ * 
+ * The  MXGEFW_FLAGS_ALIGN_ODD must be set if the cumulative
+ * length of all previous segments was odd.
+ */
+
+#define MXGEFW_FLAGS_SMALL      0x1
+#define MXGEFW_FLAGS_TSO_HDR    0x1
+#define MXGEFW_FLAGS_FIRST      0x2
+#define MXGEFW_FLAGS_ALIGN_ODD  0x4
+#define MXGEFW_FLAGS_CKSUM      0x8
+#define MXGEFW_FLAGS_TSO_LAST   0x8
+#define MXGEFW_FLAGS_NO_TSO     0x10
+#define MXGEFW_FLAGS_TSO_CHOP   0x10
+#define MXGEFW_FLAGS_TSO_PLD    0x20
+
+#define MXGEFW_SEND_SMALL_SIZE  1520
+#define MXGEFW_MAX_MTU          9400
+
+union mcp_pso_or_cumlen {
+	u16 pseudo_hdr_offset;
+	u16 cum_len;
+};
+
+#define	MXGEFW_MAX_SEND_DESC 12
+#define MXGEFW_PAD	    2
+
+/* 16 Bytes */
+struct mcp_kreq_ether_send {
+	u32 addr_high;
+	u32 addr_low;
+	u16 pseudo_hdr_offset;
+	u16 length;
+	u8 pad;
+	u8 rdma_count;
+	u8 cksum_offset;	/* where to start computing cksum */
+	u8 flags;		/* as defined above */
+};
+
+/* 8 Bytes */
+struct mcp_kreq_ether_recv {
+	u32 addr_high;
+	u32 addr_low;
+};
+
+/* Commands */
+
+#define MXGEFW_CMD_OFFSET 0xf80000
+
+enum myri10ge_mcp_cmd_type {
+	MXGEFW_CMD_NONE = 0,
+	/* Reset the mcp, it is left in a safe state, waiting
+	 * for the driver to set all its parameters */
+	MXGEFW_CMD_RESET,
+
+	/* get the version number of the current firmware..
+	 * (may be available in the eeprom strings..? */
+	MXGEFW_GET_MCP_VERSION,
+
+	/* Parameters which must be set by the driver before it can
+	 * issue MXGEFW_CMD_ETHERNET_UP. They persist until the next
+	 * MXGEFW_CMD_RESET is issued */
+
+	MXGEFW_CMD_SET_INTRQ_DMA,
+	MXGEFW_CMD_SET_BIG_BUFFER_SIZE,	/* in bytes, power of 2 */
+	MXGEFW_CMD_SET_SMALL_BUFFER_SIZE,	/* in bytes */
+
+	/* Parameters which refer to lanai SRAM addresses where the 
+	 * driver must issue PIO writes for various things */
+
+	MXGEFW_CMD_GET_SEND_OFFSET,
+	MXGEFW_CMD_GET_SMALL_RX_OFFSET,
+	MXGEFW_CMD_GET_BIG_RX_OFFSET,
+	MXGEFW_CMD_GET_IRQ_ACK_OFFSET,
+	MXGEFW_CMD_GET_IRQ_DEASSERT_OFFSET,
+
+	/* Parameters which refer to rings stored on the MCP,
+	 * and whose size is controlled by the mcp */
+
+	MXGEFW_CMD_GET_SEND_RING_SIZE,	/* in bytes */
+	MXGEFW_CMD_GET_RX_RING_SIZE,	/* in bytes */
+
+	/* Parameters which refer to rings stored in the host,
+	 * and whose size is controlled by the host.  Note that
+	 * all must be physically contiguous and must contain 
+	 * a power of 2 number of entries.  */
+
+	MXGEFW_CMD_SET_INTRQ_SIZE,	/* in bytes */
+
+	/* command to bring ethernet interface up.  Above parameters
+	 * (plus mtu & mac address) must have been exchanged prior
+	 * to issuing this command  */
+	MXGEFW_CMD_ETHERNET_UP,
+
+	/* command to bring ethernet interface down.  No further sends
+	 * or receives may be processed until an MXGEFW_CMD_ETHERNET_UP
+	 * is issued, and all interrupt queues must be flushed prior
+	 * to ack'ing this command */
+
+	MXGEFW_CMD_ETHERNET_DOWN,
+
+	/* commands the driver may issue live, without resetting
+	 * the nic.  Note that increasing the mtu "live" should
+	 * only be done if the driver has already supplied buffers
+	 * sufficiently large to handle the new mtu.  Decreasing
+	 * the mtu live is safe */
+
+	MXGEFW_CMD_SET_MTU,
+	MXGEFW_CMD_GET_INTR_COAL_DELAY_OFFSET,	/* in microseconds */
+	MXGEFW_CMD_SET_STATS_INTERVAL,	/* in microseconds */
+	MXGEFW_CMD_SET_STATS_DMA,
+
+	MXGEFW_ENABLE_PROMISC,
+	MXGEFW_DISABLE_PROMISC,
+	MXGEFW_SET_MAC_ADDRESS,
+
+	MXGEFW_ENABLE_FLOW_CONTROL,
+	MXGEFW_DISABLE_FLOW_CONTROL,
+
+	/* do a DMA test
+	 * data0,data1 = DMA address
+	 * data2       = RDMA length (MSH), WDMA length (LSH)
+	 * command return data = repetitions (MSH), 0.5-ms ticks (LSH)
+	 */
+	MXGEFW_DMA_TEST
+};
+
+enum myri10ge_mcp_cmd_status {
+	MXGEFW_CMD_OK = 0,
+	MXGEFW_CMD_UNKNOWN,
+	MXGEFW_CMD_ERROR_RANGE,
+	MXGEFW_CMD_ERROR_BUSY,
+	MXGEFW_CMD_ERROR_EMPTY,
+	MXGEFW_CMD_ERROR_CLOSED,
+	MXGEFW_CMD_ERROR_HASH_ERROR,
+	MXGEFW_CMD_ERROR_BAD_PORT,
+	MXGEFW_CMD_ERROR_RESOURCES
+};
+
+/* 40 Bytes */
+struct mcp_irq_data {
+	u32 send_done_count;
+
+	u32 link_up;
+	u32 dropped_link_overflow;
+	u32 dropped_link_error_or_filtered;
+	u32 dropped_runt;
+	u32 dropped_overrun;
+	u32 dropped_no_small_buffer;
+	u32 dropped_no_big_buffer;
+	u32 rdma_tags_available;
+
+	u8 tx_stopped;
+	u8 link_down;
+	u8 stats_updated;
+	u8 valid;
+};
+
+#endif				/* __MYRI10GE_MCP_H__ */