/*******************************************************************************

Copyright (c) 2006, Myricom Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 1. Redistributions of source code must retain the above copyright notice,
    this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.

 3. Neither the name of the Myricom Inc, nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

$FreeBSD$

***************************************************************************/

#define MYRI10GE_MAX_ETHER_MTU 9014

#define MYRI10GE_ETH_STOPPED 0
#define MYRI10GE_ETH_STOPPING 1
#define MYRI10GE_ETH_STARTING 2
#define MYRI10GE_ETH_RUNNING 3
#define MYRI10GE_ETH_OPEN_FAILED 4

#define MYRI10GE_FW_OFFSET 1024*1024
#define MYRI10GE_EEPROM_STRINGS_SIZE 256
#define MYRI10GE_NUM_INTRQS 2

typedef struct {
	void *addr;
	bus_addr_t bus_addr;
	bus_dma_tag_t dmat;
	bus_dmamap_t map;
} myri10ge_dma_t;

typedef struct myri10ge_intrq
{
  mcp_slot_t *q[MYRI10GE_NUM_INTRQS];
  int intrq;
  int slot;
  int maxslots;
  uint32_t seqnum;
  uint32_t spurious;
  uint32_t cnt;
  myri10ge_dma_t dma[MYRI10GE_NUM_INTRQS];
} myri10ge_intrq_t;


typedef struct
{
  uint32_t data0;
  uint32_t data1;
  uint32_t data2;
} myri10ge_cmd_t;

struct myri10ge_buffer_state {
	struct mbuf *m;
	bus_dmamap_t map;
};

typedef struct
{
	volatile mcp_kreq_ether_recv_t *lanai;	/* lanai ptr for recv ring */
	volatile uint8_t *wc_fifo;	/* w/c rx dma addr fifo address */
	mcp_kreq_ether_recv_t *shadow;	/* host shadow of recv ring */
	struct myri10ge_buffer_state *info;
	bus_dma_tag_t dmat;
	bus_dmamap_t extra_map;
	int cnt;
	int alloc_fail;
	int mask;			/* number of rx slots -1 */
} myri10ge_rx_buf_t;

typedef struct
{
	volatile mcp_kreq_ether_send_t *lanai;	/* lanai ptr for sendq	*/
	volatile uint8_t *wc_fifo;		/* w/c send fifo address */
	mcp_kreq_ether_send_t *req_list;	/* host shadow of sendq */
	char *req_bytes;
	struct myri10ge_buffer_state *info;
	bus_dma_tag_t dmat;
	int req;			/* transmits submitted	*/
	int mask;			/* number of transmit slots -1 */
	int done;			/* transmits completed	*/
	int boundary;			/* boundary transmits cannot cross*/
} myri10ge_tx_buf_t;

typedef struct {
	struct ifnet* ifp;
	int big_bytes;
	struct mtx tx_lock;
	int csum_flag;			/* rx_csums? 		*/
	uint8_t	mac_addr[6];		/* eeprom mac address */
	myri10ge_tx_buf_t tx;	/* transmit ring 	*/
	myri10ge_rx_buf_t rx_small;
	myri10ge_rx_buf_t rx_big;
	bus_dma_tag_t	parent_dmat;
	volatile uint8_t *sram;
	int sram_size;
	volatile uint32_t *irq_claim;
	char *mac_addr_string;
	char *product_code_string;
	mcp_cmd_response_t *cmd;
	myri10ge_dma_t cmd_dma;
	myri10ge_dma_t zeropad_dma;
	mcp_stats_t *fw_stats;
	myri10ge_dma_t fw_stats_dma;
	struct pci_dev *pdev;
	int msi_enabled;
	myri10ge_intrq_t intr;
	int link_state;
	unsigned int rdma_tags_available;
	int intr_coal_delay;
	int wc;
	struct mtx cmd_lock;
	struct sx driver_lock;
	int wake_queue;
	int stop_queue;
	int down_cnt;
	int watchdog_resets;
	int tx_defragged;
	int pause;
	struct resource *mem_res;
	struct resource *irq_res;
	void *ih; 
	char *fw_name;
	char eeprom_strings[MYRI10GE_EEPROM_STRINGS_SIZE];
	char fw_version[128];
	device_t dev;
	struct ifmedia media;

} myri10ge_softc_t;

#define MYRI10GE_PCI_VENDOR_MYRICOM 	0x14c1
#define MYRI10GE_PCI_DEVICE_Z8E 	0x0008

#define MYRI10GE_HIGHPART_TO_U32(X) \
(sizeof (X) == 8) ? ((uint32_t)((uint64_t)(X) >> 32)) : (0)
#define MYRI10GE_LOWPART_TO_U32(X) ((uint32_t)(X))


/* implement our own memory barriers, since bus_space_barrier
   cannot handle write-combining regions */

#if defined (__GNUC__)
  #if #cpu(i386) || defined __i386 || defined i386 || defined __i386__ || #cpu(x86_64) || defined __x86_64__
    #define mb()  __asm__ __volatile__ ("sfence;": : :"memory")
  #elif #cpu(sparc64) || defined sparc64 || defined __sparcv9 
    #define mb()  __asm__ __volatile__ ("membar #MemIssue": : :"memory")
  #elif #cpu(sparc) || defined sparc || defined __sparc__
    #define mb()  __asm__ __volatile__ ("stbar;": : :"memory")
  #else
    #define mb() 	/* XXX just to make this compile */
  #endif
#else
  #error "unknown compiler"
#endif

static inline void
myri10ge_pio_copy(volatile void *to_v, void *from_v, size_t size)
{
  register volatile uintptr_t *to;
  volatile uintptr_t *from;
  size_t i;

  to = (volatile uintptr_t *) to_v;
  from = from_v;
  for (i = (size / sizeof (uintptr_t)); i; i--) {
	  *to = *from;
	  to++;
	  from++;
  }

}


/*
  This file uses Myri10GE driver indentation.

  Local Variables:
  c-file-style:"linux"
  tab-width:8
  End:
*/