Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 438 insertions, 0 deletions

diff --git a/drivers/net/mv643xx_eth.h b/drivers/net/mv643xx_eth.h
new file mode 100644
index 00000000000..57c4f8fbfdb
--- /dev/null
+++ b/drivers/net/mv643xx_eth.h
@@ -0,0 +1,438 @@
+#ifndef __MV643XX_ETH_H__
+#define __MV643XX_ETH_H__
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+
+#include <linux/mv643xx.h>
+
+#define	BIT0	0x00000001
+#define	BIT1	0x00000002
+#define	BIT2	0x00000004
+#define	BIT3	0x00000008
+#define	BIT4	0x00000010
+#define	BIT5	0x00000020
+#define	BIT6	0x00000040
+#define	BIT7	0x00000080
+#define	BIT8	0x00000100
+#define	BIT9	0x00000200
+#define	BIT10	0x00000400
+#define	BIT11	0x00000800
+#define	BIT12	0x00001000
+#define	BIT13	0x00002000
+#define	BIT14	0x00004000
+#define	BIT15	0x00008000
+#define	BIT16	0x00010000
+#define	BIT17	0x00020000
+#define	BIT18	0x00040000
+#define	BIT19	0x00080000
+#define	BIT20	0x00100000
+#define	BIT21	0x00200000
+#define	BIT22	0x00400000
+#define	BIT23	0x00800000
+#define	BIT24	0x01000000
+#define	BIT25	0x02000000
+#define	BIT26	0x04000000
+#define	BIT27	0x08000000
+#define	BIT28	0x10000000
+#define	BIT29	0x20000000
+#define	BIT30	0x40000000
+#define	BIT31	0x80000000
+
+/*
+ *  The first part is the high level driver of the gigE ethernet ports.
+ */
+
+/* Checksum offload for Tx works for most packets, but
+ * fails if previous packet sent did not use hw csum
+ */
+#undef	MV643XX_CHECKSUM_OFFLOAD_TX
+#define	MV643XX_NAPI
+#define	MV643XX_TX_FAST_REFILL
+#undef	MV643XX_RX_QUEUE_FILL_ON_TASK	/* Does not work, yet */
+#undef	MV643XX_COAL
+
+/*
+ * Number of RX / TX descriptors on RX / TX rings.
+ * Note that allocating RX descriptors is done by allocating the RX
+ * ring AND a preallocated RX buffers (skb's) for each descriptor.
+ * The TX descriptors only allocates the TX descriptors ring,
+ * with no pre allocated TX buffers (skb's are allocated by higher layers.
+ */
+
+/* Default TX ring size is 1000 descriptors */
+#define MV643XX_DEFAULT_TX_QUEUE_SIZE 1000
+
+/* Default RX ring size is 400 descriptors */
+#define MV643XX_DEFAULT_RX_QUEUE_SIZE 400
+
+#define MV643XX_TX_COAL 100
+#ifdef MV643XX_COAL
+#define MV643XX_RX_COAL 100
+#endif
+
+/*
+ * The second part is the low level driver of the gigE ethernet ports.
+ */
+
+/*
+ * Header File for : MV-643xx network interface header
+ *
+ * DESCRIPTION:
+ *	This header file contains macros typedefs and function declaration for
+ *	the Marvell Gig Bit Ethernet Controller.
+ *
+ * DEPENDENCIES:
+ *	None.
+ *
+ */
+
+/* MAC accepet/reject macros */
+#define ACCEPT_MAC_ADDR				0
+#define REJECT_MAC_ADDR				1
+
+/* Buffer offset from buffer pointer */
+#define RX_BUF_OFFSET				0x2
+
+/* Gigabit Ethernet Unit Global Registers */
+
+/* MIB Counters register definitions */
+#define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW	0x0
+#define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH	0x4
+#define ETH_MIB_BAD_OCTETS_RECEIVED		0x8
+#define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR	0xc
+#define ETH_MIB_GOOD_FRAMES_RECEIVED		0x10
+#define ETH_MIB_BAD_FRAMES_RECEIVED		0x14
+#define ETH_MIB_BROADCAST_FRAMES_RECEIVED	0x18
+#define ETH_MIB_MULTICAST_FRAMES_RECEIVED	0x1c
+#define ETH_MIB_FRAMES_64_OCTETS		0x20
+#define ETH_MIB_FRAMES_65_TO_127_OCTETS		0x24
+#define ETH_MIB_FRAMES_128_TO_255_OCTETS	0x28
+#define ETH_MIB_FRAMES_256_TO_511_OCTETS	0x2c
+#define ETH_MIB_FRAMES_512_TO_1023_OCTETS	0x30
+#define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS	0x34
+#define ETH_MIB_GOOD_OCTETS_SENT_LOW		0x38
+#define ETH_MIB_GOOD_OCTETS_SENT_HIGH		0x3c
+#define ETH_MIB_GOOD_FRAMES_SENT		0x40
+#define ETH_MIB_EXCESSIVE_COLLISION		0x44
+#define ETH_MIB_MULTICAST_FRAMES_SENT		0x48
+#define ETH_MIB_BROADCAST_FRAMES_SENT		0x4c
+#define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED	0x50
+#define ETH_MIB_FC_SENT				0x54
+#define ETH_MIB_GOOD_FC_RECEIVED		0x58
+#define ETH_MIB_BAD_FC_RECEIVED			0x5c
+#define ETH_MIB_UNDERSIZE_RECEIVED		0x60
+#define ETH_MIB_FRAGMENTS_RECEIVED		0x64
+#define ETH_MIB_OVERSIZE_RECEIVED		0x68
+#define ETH_MIB_JABBER_RECEIVED			0x6c
+#define ETH_MIB_MAC_RECEIVE_ERROR		0x70
+#define ETH_MIB_BAD_CRC_EVENT			0x74
+#define ETH_MIB_COLLISION			0x78
+#define ETH_MIB_LATE_COLLISION			0x7c
+
+/* Port serial status reg (PSR) */
+#define ETH_INTERFACE_GMII_MII			0
+#define ETH_INTERFACE_PCM			BIT0
+#define ETH_LINK_IS_DOWN			0
+#define ETH_LINK_IS_UP				BIT1
+#define ETH_PORT_AT_HALF_DUPLEX			0
+#define ETH_PORT_AT_FULL_DUPLEX			BIT2
+#define ETH_RX_FLOW_CTRL_DISABLED		0
+#define ETH_RX_FLOW_CTRL_ENBALED		BIT3
+#define ETH_GMII_SPEED_100_10			0
+#define ETH_GMII_SPEED_1000			BIT4
+#define ETH_MII_SPEED_10			0
+#define ETH_MII_SPEED_100			BIT5
+#define ETH_NO_TX				0
+#define ETH_TX_IN_PROGRESS			BIT7
+#define ETH_BYPASS_NO_ACTIVE			0
+#define ETH_BYPASS_ACTIVE			BIT8
+#define ETH_PORT_NOT_AT_PARTITION_STATE		0
+#define ETH_PORT_AT_PARTITION_STATE		BIT9
+#define ETH_PORT_TX_FIFO_NOT_EMPTY		0
+#define ETH_PORT_TX_FIFO_EMPTY			BIT10
+
+#define ETH_DEFAULT_RX_BPDU_QUEUE_3		(BIT23 | BIT22)
+#define ETH_DEFAULT_RX_BPDU_QUEUE_4		BIT24
+#define ETH_DEFAULT_RX_BPDU_QUEUE_5		(BIT24 | BIT22)
+#define ETH_DEFAULT_RX_BPDU_QUEUE_6		(BIT24 | BIT23)
+#define ETH_DEFAULT_RX_BPDU_QUEUE_7		(BIT24 | BIT23 | BIT22)
+
+/* SMI reg */
+#define ETH_SMI_BUSY		BIT28	/* 0 - Write, 1 - Read		*/
+#define ETH_SMI_READ_VALID	BIT27	/* 0 - Write, 1 - Read		*/
+#define ETH_SMI_OPCODE_WRITE	0	/* Completion of Read operation */
+#define ETH_SMI_OPCODE_READ 	BIT26	/* Operation is in progress	*/
+
+/* SDMA command status fields macros */
+
+/* Tx & Rx descriptors status */
+#define ETH_ERROR_SUMMARY			(BIT0)
+
+/* Tx & Rx descriptors command */
+#define ETH_BUFFER_OWNED_BY_DMA			(BIT31)
+
+/* Tx descriptors status */
+#define ETH_LC_ERROR				(0    )
+#define ETH_UR_ERROR				(BIT1 )
+#define ETH_RL_ERROR				(BIT2 )
+#define ETH_LLC_SNAP_FORMAT			(BIT9 )
+
+/* Rx descriptors status */
+#define ETH_CRC_ERROR				(0    )
+#define ETH_OVERRUN_ERROR			(BIT1 )
+#define ETH_MAX_FRAME_LENGTH_ERROR		(BIT2 )
+#define ETH_RESOURCE_ERROR			((BIT2 | BIT1))
+#define ETH_VLAN_TAGGED				(BIT19)
+#define ETH_BPDU_FRAME				(BIT20)
+#define ETH_TCP_FRAME_OVER_IP_V_4		(0    )
+#define ETH_UDP_FRAME_OVER_IP_V_4		(BIT21)
+#define ETH_OTHER_FRAME_TYPE			(BIT22)
+#define ETH_LAYER_2_IS_ETH_V_2			(BIT23)
+#define ETH_FRAME_TYPE_IP_V_4			(BIT24)
+#define ETH_FRAME_HEADER_OK			(BIT25)
+#define ETH_RX_LAST_DESC			(BIT26)
+#define ETH_RX_FIRST_DESC			(BIT27)
+#define ETH_UNKNOWN_DESTINATION_ADDR		(BIT28)
+#define ETH_RX_ENABLE_INTERRUPT			(BIT29)
+#define ETH_LAYER_4_CHECKSUM_OK			(BIT30)
+
+/* Rx descriptors byte count */
+#define ETH_FRAME_FRAGMENTED			(BIT2)
+
+/* Tx descriptors command */
+#define ETH_LAYER_4_CHECKSUM_FIRST_DESC		(BIT10)
+#define ETH_FRAME_SET_TO_VLAN			(BIT15)
+#define ETH_TCP_FRAME				(0    )
+#define ETH_UDP_FRAME				(BIT16)
+#define ETH_GEN_TCP_UDP_CHECKSUM		(BIT17)
+#define ETH_GEN_IP_V_4_CHECKSUM			(BIT18)
+#define ETH_ZERO_PADDING			(BIT19)
+#define ETH_TX_LAST_DESC			(BIT20)
+#define ETH_TX_FIRST_DESC			(BIT21)
+#define ETH_GEN_CRC				(BIT22)
+#define ETH_TX_ENABLE_INTERRUPT			(BIT23)
+#define ETH_AUTO_MODE				(BIT30)
+
+/* typedefs */
+
+typedef enum _eth_func_ret_status {
+	ETH_OK,			/* Returned as expected.		*/
+	ETH_ERROR,		/* Fundamental error.			*/
+	ETH_RETRY,		/* Could not process request. Try later.*/
+	ETH_END_OF_JOB,		/* Ring has nothing to process.		*/
+	ETH_QUEUE_FULL,		/* Ring resource error.			*/
+	ETH_QUEUE_LAST_RESOURCE	/* Ring resources about to exhaust.	*/
+} ETH_FUNC_RET_STATUS;
+
+typedef enum _eth_target {
+	ETH_TARGET_DRAM,
+	ETH_TARGET_DEVICE,
+	ETH_TARGET_CBS,
+	ETH_TARGET_PCI0,
+	ETH_TARGET_PCI1
+} ETH_TARGET;
+
+/* These are for big-endian machines.  Little endian needs different
+ * definitions.
+ */
+#if defined(__BIG_ENDIAN)
+struct eth_rx_desc {
+	u16 byte_cnt;		/* Descriptor buffer byte count		*/
+	u16 buf_size;		/* Buffer size				*/
+	u32 cmd_sts;		/* Descriptor command status		*/
+	u32 next_desc_ptr;	/* Next descriptor pointer		*/
+	u32 buf_ptr;		/* Descriptor buffer pointer		*/
+};
+
+struct eth_tx_desc {
+	u16 byte_cnt;		/* buffer byte count			*/
+	u16 l4i_chk;		/* CPU provided TCP checksum		*/
+	u32 cmd_sts;		/* Command/status field			*/
+	u32 next_desc_ptr;	/* Pointer to next descriptor		*/
+	u32 buf_ptr;		/* pointer to buffer for this descriptor*/
+};
+
+#elif defined(__LITTLE_ENDIAN)
+struct eth_rx_desc {
+	u32 cmd_sts;		/* Descriptor command status		*/
+	u16 buf_size;		/* Buffer size				*/
+	u16 byte_cnt;		/* Descriptor buffer byte count		*/
+	u32 buf_ptr;		/* Descriptor buffer pointer		*/
+	u32 next_desc_ptr;	/* Next descriptor pointer		*/
+};
+
+struct eth_tx_desc {
+	u32 cmd_sts;		/* Command/status field			*/
+	u16 l4i_chk;		/* CPU provided TCP checksum		*/
+	u16 byte_cnt;		/* buffer byte count			*/
+	u32 buf_ptr;		/* pointer to buffer for this descriptor*/
+	u32 next_desc_ptr;	/* Pointer to next descriptor		*/
+};
+#else
+#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
+#endif
+
+/* Unified struct for Rx and Tx operations. The user is not required to	*/
+/* be familier with neither Tx nor Rx descriptors.			*/
+struct pkt_info {
+	unsigned short byte_cnt;	/* Descriptor buffer byte count	*/
+	unsigned short l4i_chk;		/* Tx CPU provided TCP Checksum	*/
+	unsigned int cmd_sts;		/* Descriptor command status	*/
+	dma_addr_t buf_ptr;		/* Descriptor buffer pointer	*/
+	struct sk_buff *return_info;	/* User resource return information */
+};
+
+/* Ethernet port specific infomation */
+
+struct mv643xx_mib_counters {
+	u64 good_octets_received;
+	u32 bad_octets_received;
+	u32 internal_mac_transmit_err;
+	u32 good_frames_received;
+	u32 bad_frames_received;
+	u32 broadcast_frames_received;
+	u32 multicast_frames_received;
+	u32 frames_64_octets;
+	u32 frames_65_to_127_octets;
+	u32 frames_128_to_255_octets;
+	u32 frames_256_to_511_octets;
+	u32 frames_512_to_1023_octets;
+	u32 frames_1024_to_max_octets;
+	u64 good_octets_sent;
+	u32 good_frames_sent;
+	u32 excessive_collision;
+	u32 multicast_frames_sent;
+	u32 broadcast_frames_sent;
+	u32 unrec_mac_control_received;
+	u32 fc_sent;
+	u32 good_fc_received;
+	u32 bad_fc_received;
+	u32 undersize_received;
+	u32 fragments_received;
+	u32 oversize_received;
+	u32 jabber_received;
+	u32 mac_receive_error;
+	u32 bad_crc_event;
+	u32 collision;
+	u32 late_collision;
+};
+
+struct mv643xx_private {
+	int port_num;			/* User Ethernet port number	*/
+	u8 port_mac_addr[6];		/* User defined port MAC address.*/
+	u32 port_config;		/* User port configuration value*/
+	u32 port_config_extend;		/* User port config extend value*/
+	u32 port_sdma_config;		/* User port SDMA config value	*/
+	u32 port_serial_control;	/* User port serial control value */
+	u32 port_tx_queue_command;	/* Port active Tx queues summary*/
+	u32 port_rx_queue_command;	/* Port active Rx queues summary*/
+
+	u32 rx_sram_addr;		/* Base address of rx sram area */
+	u32 rx_sram_size;		/* Size of rx sram area		*/
+	u32 tx_sram_addr;		/* Base address of tx sram area */
+	u32 tx_sram_size;		/* Size of tx sram area		*/
+
+	int rx_resource_err;		/* Rx ring resource error flag */
+	int tx_resource_err;		/* Tx ring resource error flag */
+
+	/* Tx/Rx rings managment indexes fields. For driver use */
+
+	/* Next available and first returning Rx resource */
+	int rx_curr_desc_q, rx_used_desc_q;
+
+	/* Next available and first returning Tx resource */
+	int tx_curr_desc_q, tx_used_desc_q;
+#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
+	int tx_first_desc_q;
+	u32 tx_first_command;
+#endif
+
+#ifdef MV643XX_TX_FAST_REFILL
+	u32 tx_clean_threshold;
+#endif
+
+	struct eth_rx_desc *p_rx_desc_area;
+	dma_addr_t rx_desc_dma;
+	unsigned int rx_desc_area_size;
+	struct sk_buff **rx_skb;
+
+	struct eth_tx_desc *p_tx_desc_area;
+	dma_addr_t tx_desc_dma;
+	unsigned int tx_desc_area_size;
+	struct sk_buff **tx_skb;
+
+	struct work_struct tx_timeout_task;
+
+	/*
+	 * Former struct mv643xx_eth_priv members start here
+	 */
+	struct net_device_stats stats;
+	struct mv643xx_mib_counters mib_counters;
+	spinlock_t lock;
+	/* Size of Tx Ring per queue */
+	unsigned int tx_ring_size;
+	/* Ammont of SKBs outstanding on Tx queue */
+	unsigned int tx_ring_skbs;
+	/* Size of Rx Ring per queue */
+	unsigned int rx_ring_size;
+	/* Ammount of SKBs allocated to Rx Ring per queue */
+	unsigned int rx_ring_skbs;
+
+	/*
+	 * rx_task used to fill RX ring out of bottom half context
+	 */
+	struct work_struct rx_task;
+
+	/*
+	 * Used in case RX Ring is empty, which can be caused when
+	 * system does not have resources (skb's)
+	 */
+	struct timer_list timeout;
+	long rx_task_busy __attribute__ ((aligned(SMP_CACHE_BYTES)));
+	unsigned rx_timer_flag;
+
+	u32 rx_int_coal;
+	u32 tx_int_coal;
+};
+
+/* ethernet.h API list */
+
+/* Port operation control routines */
+static void eth_port_init(struct mv643xx_private *mp);
+static void eth_port_reset(unsigned int eth_port_num);
+static void eth_port_start(struct mv643xx_private *mp);
+
+static void ethernet_set_config_reg(unsigned int eth_port_num,
+				    unsigned int value);
+static unsigned int ethernet_get_config_reg(unsigned int eth_port_num);
+
+/* Port MAC address routines */
+static void eth_port_uc_addr_set(unsigned int eth_port_num,
+				 unsigned char *p_addr);
+
+/* PHY and MIB routines */
+static void ethernet_phy_reset(unsigned int eth_port_num);
+
+static void eth_port_write_smi_reg(unsigned int eth_port_num,
+				   unsigned int phy_reg, unsigned int value);
+
+static void eth_port_read_smi_reg(unsigned int eth_port_num,
+				  unsigned int phy_reg, unsigned int *value);
+
+static void eth_clear_mib_counters(unsigned int eth_port_num);
+
+/* Port data flow control routines */
+static ETH_FUNC_RET_STATUS eth_port_send(struct mv643xx_private *mp,
+					 struct pkt_info *p_pkt_info);
+static ETH_FUNC_RET_STATUS eth_tx_return_desc(struct mv643xx_private *mp,
+					      struct pkt_info *p_pkt_info);
+static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
+					    struct pkt_info *p_pkt_info);
+static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
+					      struct pkt_info *p_pkt_info);
+
+#endif				/* __MV643XX_ETH_H__ */