[mirror_ubuntu-disco-kernel.git] / drivers / infiniband / hw / amso1100 / c2.h

/*
 * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __C2_H
#define __C2_H

#include <linux/netdevice.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <asm/semaphore.h>

#include "c2_provider.h"
#include "c2_mq.h"
#include "c2_status.h"

#define DRV_NAME     "c2"
#define DRV_VERSION  "1.1"
#define PFX          DRV_NAME ": "

#define BAR_0                0
#define BAR_2                2
#define BAR_4                4

#define RX_BUF_SIZE         (1536 + 8)
#define ETH_JUMBO_MTU        9000
#define C2_MAGIC            "CEPHEUS"
#define C2_VERSION           4
#define C2_IVN              (18 & 0x7fffffff)

#define C2_REG0_SIZE        (16 * 1024)
#define C2_REG2_SIZE        (2 * 1024 * 1024)
#define C2_REG4_SIZE        (256 * 1024 * 1024)
#define C2_NUM_TX_DESC       341
#define C2_NUM_RX_DESC       256
#define C2_PCI_REGS_OFFSET  (0x10000)
#define C2_RXP_HRXDQ_OFFSET (((C2_REG4_SIZE)/2))
#define C2_RXP_HRXDQ_SIZE   (4096)
#define C2_TXP_HTXDQ_OFFSET (((C2_REG4_SIZE)/2) + C2_RXP_HRXDQ_SIZE)
#define C2_TXP_HTXDQ_SIZE   (4096)
#define C2_TX_TIMEOUT	    (6*HZ)

/* CEPHEUS */
static const u8 c2_magic[] = {
	0x43, 0x45, 0x50, 0x48, 0x45, 0x55, 0x53
};

enum adapter_pci_regs {
	C2_REGS_MAGIC = 0x0000,
	C2_REGS_VERS = 0x0008,
	C2_REGS_IVN = 0x000C,
	C2_REGS_PCI_WINSIZE = 0x0010,
	C2_REGS_Q0_QSIZE = 0x0014,
	C2_REGS_Q0_MSGSIZE = 0x0018,
	C2_REGS_Q0_POOLSTART = 0x001C,
	C2_REGS_Q0_SHARED = 0x0020,
	C2_REGS_Q1_QSIZE = 0x0024,
	C2_REGS_Q1_MSGSIZE = 0x0028,
	C2_REGS_Q1_SHARED = 0x0030,
	C2_REGS_Q2_QSIZE = 0x0034,
	C2_REGS_Q2_MSGSIZE = 0x0038,
	C2_REGS_Q2_SHARED = 0x0040,
	C2_REGS_ENADDR = 0x004C,
	C2_REGS_RDMA_ENADDR = 0x0054,
	C2_REGS_HRX_CUR = 0x006C,
};

struct c2_adapter_pci_regs {
	char reg_magic[8];
	u32 version;
	u32 ivn;
	u32 pci_window_size;
	u32 q0_q_size;
	u32 q0_msg_size;
	u32 q0_pool_start;
	u32 q0_shared;
	u32 q1_q_size;
	u32 q1_msg_size;
	u32 q1_pool_start;
	u32 q1_shared;
	u32 q2_q_size;
	u32 q2_msg_size;
	u32 q2_pool_start;
	u32 q2_shared;
	u32 log_start;
	u32 log_size;
	u8 host_enaddr[8];
	u8 rdma_enaddr[8];
	u32 crash_entry;
	u32 crash_ready[2];
	u32 fw_txd_cur;
	u32 fw_hrxd_cur;
	u32 fw_rxd_cur;
};

enum pci_regs {
	C2_HISR = 0x0000,
	C2_DISR = 0x0004,
	C2_HIMR = 0x0008,
	C2_DIMR = 0x000C,
	C2_NISR0 = 0x0010,
	C2_NISR1 = 0x0014,
	C2_NIMR0 = 0x0018,
	C2_NIMR1 = 0x001C,
	C2_IDIS = 0x0020,
};

enum {
	C2_PCI_HRX_INT = 1 << 8,
	C2_PCI_HTX_INT = 1 << 17,
	C2_PCI_HRX_QUI = 1 << 31,
};

/*
 * Cepheus registers in BAR0.
 */
struct c2_pci_regs {
	u32 hostisr;
	u32 dmaisr;
	u32 hostimr;
	u32 dmaimr;
	u32 netisr0;
	u32 netisr1;
	u32 netimr0;
	u32 netimr1;
	u32 int_disable;
};

/* TXP flags */
enum c2_txp_flags {
	TXP_HTXD_DONE = 0,
	TXP_HTXD_READY = 1 << 0,
	TXP_HTXD_UNINIT = 1 << 1,
};

/* RXP flags */
enum c2_rxp_flags {
	RXP_HRXD_UNINIT = 0,
	RXP_HRXD_READY = 1 << 0,
	RXP_HRXD_DONE = 1 << 1,
};

/* RXP status */
enum c2_rxp_status {
	RXP_HRXD_ZERO = 0,
	RXP_HRXD_OK = 1 << 0,
	RXP_HRXD_BUF_OV = 1 << 1,
};

/* TXP descriptor fields */
enum txp_desc {
	C2_TXP_FLAGS = 0x0000,
	C2_TXP_LEN = 0x0002,
	C2_TXP_ADDR = 0x0004,
};

/* RXP descriptor fields */
enum rxp_desc {
	C2_RXP_FLAGS = 0x0000,
	C2_RXP_STATUS = 0x0002,
	C2_RXP_COUNT = 0x0004,
	C2_RXP_LEN = 0x0006,
	C2_RXP_ADDR = 0x0008,
};

struct c2_txp_desc {
	u16 flags;
	u16 len;
	u64 addr;
} __attribute__ ((packed));

struct c2_rxp_desc {
	u16 flags;
	u16 status;
	u16 count;
	u16 len;
	u64 addr;
} __attribute__ ((packed));

struct c2_rxp_hdr {
	u16 flags;
	u16 status;
	u16 len;
	u16 rsvd;
} __attribute__ ((packed));

struct c2_tx_desc {
	u32 len;
	u32 status;
	dma_addr_t next_offset;
};

struct c2_rx_desc {
	u32 len;
	u32 status;
	dma_addr_t next_offset;
};

struct c2_alloc {
	u32 last;
	u32 max;
	spinlock_t lock;
	unsigned long *table;
};

struct c2_array {
	struct {
		void **page;
		int used;
	} *page_list;
};

/*
 * The MQ shared pointer pool is organized as a linked list of
 * chunks. Each chunk contains a linked list of free shared pointers
 * that can be allocated to a given user mode client.
 *
 */
struct sp_chunk {
	struct sp_chunk *next;
	dma_addr_t dma_addr;
	DECLARE_PCI_UNMAP_ADDR(mapping);
	u16 head;
	u16 shared_ptr[0];
};

struct c2_pd_table {
	u32 last;
	u32 max;
	spinlock_t lock;
	unsigned long *table;
};

struct c2_qp_table {
	struct idr idr;
	spinlock_t lock;
	int last;
};

struct c2_element {
	struct c2_element *next;
	void *ht_desc;		/* host     descriptor */
	void __iomem *hw_desc;	/* hardware descriptor */
	struct sk_buff *skb;
	dma_addr_t mapaddr;
	u32 maplen;
};

struct c2_ring {
	struct c2_element *to_clean;
	struct c2_element *to_use;
	struct c2_element *start;
	unsigned long count;
};

struct c2_dev {
	struct ib_device ibdev;
	void __iomem *regs;
	void __iomem *mmio_txp_ring; /* remapped adapter memory for hw rings */
	void __iomem *mmio_rxp_ring;
	spinlock_t lock;
	struct pci_dev *pcidev;
	struct net_device *netdev;
	struct net_device *pseudo_netdev;
	unsigned int cur_tx;
	unsigned int cur_rx;
	u32 adapter_handle;
	int device_cap_flags;
	void __iomem *kva;	/* KVA device memory */
	unsigned long pa;	/* PA device memory */
	void **qptr_array;

	struct kmem_cache *host_msg_cache;

	struct list_head cca_link;		/* adapter list */
	struct list_head eh_wakeup_list;	/* event wakeup list */
	wait_queue_head_t req_vq_wo;

	/* Cached RNIC properties */
	struct ib_device_attr props;

	struct c2_pd_table pd_table;
	struct c2_qp_table qp_table;
	int ports;		/* num of GigE ports */
	int devnum;
	spinlock_t vqlock;	/* sync vbs req MQ */

	/* Verbs Queues */
	struct c2_mq req_vq;	/* Verbs Request MQ */
	struct c2_mq rep_vq;	/* Verbs Reply MQ */
	struct c2_mq aeq;	/* Async Events MQ */

	/* Kernel client MQs */
	struct sp_chunk *kern_mqsp_pool;

	/* Device updates these values when posting messages to a host
	 * target queue */
	u16 req_vq_shared;
	u16 rep_vq_shared;
	u16 aeq_shared;
	u16 irq_claimed;

	/*
	 * Shared host target pages for user-accessible MQs.
	 */
	int hthead;		/* index of first free entry */
	void *htpages;		/* kernel vaddr */
	int htlen;		/* length of htpages memory */
	void *htuva;		/* user mapped vaddr */
	spinlock_t htlock;	/* serialize allocation */

	u64 adapter_hint_uva;	/* access to the activity FIFO */

	//	spinlock_t aeq_lock;
	//	spinlock_t rnic_lock;

	__be16 *hint_count;
	dma_addr_t hint_count_dma;
	u16 hints_read;

	int init;		/* TRUE if it's ready */
	char ae_cache_name[16];
	char vq_cache_name[16];
};

struct c2_port {
	u32 msg_enable;
	struct c2_dev *c2dev;
	struct net_device *netdev;

	spinlock_t tx_lock;
	u32 tx_avail;
	struct c2_ring tx_ring;
	struct c2_ring rx_ring;

	void *mem;		/* PCI memory for host rings */
	dma_addr_t dma;
	unsigned long mem_size;

	u32 rx_buf_size;

	struct net_device_stats netstats;
};

/*
 * Activity FIFO registers in BAR0.
 */
#define PCI_BAR0_HOST_HINT	0x100
#define PCI_BAR0_ADAPTER_HINT	0x2000

/*
 * Ammasso PCI vendor id and Cepheus PCI device id.
 */
#define CQ_ARMED 	0x01
#define CQ_WAIT_FOR_DMA	0x80

/*
 * The format of a hint is as follows:
 * Lower 16 bits are the count of hints for the queue.
 * Next 15 bits are the qp_index
 * Upper most bit depends on who reads it:
 *    If read by producer, then it means Full (1) or Not-Full (0)
 *    If read by consumer, then it means Empty (1) or Not-Empty (0)
 */
#define C2_HINT_MAKE(q_index, hint_count) (((q_index) << 16) | hint_count)
#define C2_HINT_GET_INDEX(hint) (((hint) & 0x7FFF0000) >> 16)
#define C2_HINT_GET_COUNT(hint) ((hint) & 0x0000FFFF)


/*
 * The following defines the offset in SDRAM for the c2_adapter_pci_regs_t
 * struct.
 */
#define C2_ADAPTER_PCI_REGS_OFFSET 0x10000

#ifndef readq
static inline u64 readq(const void __iomem * addr)
{
	u64 ret = readl(addr + 4);
	ret <<= 32;
	ret |= readl(addr);

	return ret;
}
#endif

#ifndef writeq
static inline void __raw_writeq(u64 val, void __iomem * addr)
{
	__raw_writel((u32) (val), addr);
	__raw_writel((u32) (val >> 32), (addr + 4));
}
#endif

#define C2_SET_CUR_RX(c2dev, cur_rx) \
	__raw_writel((__force u32) cpu_to_be32(cur_rx), c2dev->mmio_txp_ring + 4092)

#define C2_GET_CUR_RX(c2dev) \
	be32_to_cpu((__force __be32) readl(c2dev->mmio_txp_ring + 4092))

static inline struct c2_dev *to_c2dev(struct ib_device *ibdev)
{
	return container_of(ibdev, struct c2_dev, ibdev);
}

static inline int c2_errno(void *reply)
{
	switch (c2_wr_get_result(reply)) {
	case C2_OK:
		return 0;
	case CCERR_NO_BUFS:
	case CCERR_INSUFFICIENT_RESOURCES:
	case CCERR_ZERO_RDMA_READ_RESOURCES:
		return -ENOMEM;
	case CCERR_MR_IN_USE:
	case CCERR_QP_IN_USE:
		return -EBUSY;
	case CCERR_ADDR_IN_USE:
		return -EADDRINUSE;
	case CCERR_ADDR_NOT_AVAIL:
		return -EADDRNOTAVAIL;
	case CCERR_CONN_RESET:
		return -ECONNRESET;
	case CCERR_NOT_IMPLEMENTED:
	case CCERR_INVALID_WQE:
		return -ENOSYS;
	case CCERR_QP_NOT_PRIVILEGED:
		return -EPERM;
	case CCERR_STACK_ERROR:
		return -EPROTO;
	case CCERR_ACCESS_VIOLATION:
	case CCERR_BASE_AND_BOUNDS_VIOLATION:
		return -EFAULT;
	case CCERR_STAG_STATE_NOT_INVALID:
	case CCERR_INVALID_ADDRESS:
	case CCERR_INVALID_CQ:
	case CCERR_INVALID_EP:
	case CCERR_INVALID_MODIFIER:
	case CCERR_INVALID_MTU:
	case CCERR_INVALID_PD_ID:
	case CCERR_INVALID_QP:
	case CCERR_INVALID_RNIC:
	case CCERR_INVALID_STAG:
		return -EINVAL;
	default:
		return -EAGAIN;
	}
}

/* Device */
extern int c2_register_device(struct c2_dev *c2dev);
extern void c2_unregister_device(struct c2_dev *c2dev);
extern int c2_rnic_init(struct c2_dev *c2dev);
extern void c2_rnic_term(struct c2_dev *c2dev);
extern void c2_rnic_interrupt(struct c2_dev *c2dev);
extern int c2_del_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask);
extern int c2_add_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask);

/* QPs */
extern int c2_alloc_qp(struct c2_dev *c2dev, struct c2_pd *pd,
		       struct ib_qp_init_attr *qp_attrs, struct c2_qp *qp);
extern void c2_free_qp(struct c2_dev *c2dev, struct c2_qp *qp);
extern struct ib_qp *c2_get_qp(struct ib_device *device, int qpn);
extern int c2_qp_modify(struct c2_dev *c2dev, struct c2_qp *qp,
			struct ib_qp_attr *attr, int attr_mask);
extern int c2_qp_set_read_limits(struct c2_dev *c2dev, struct c2_qp *qp,
				 int ord, int ird);
extern int c2_post_send(struct ib_qp *ibqp, struct ib_send_wr *ib_wr,
			struct ib_send_wr **bad_wr);
extern int c2_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *ib_wr,
			   struct ib_recv_wr **bad_wr);
extern void __devinit c2_init_qp_table(struct c2_dev *c2dev);
extern void __devexit c2_cleanup_qp_table(struct c2_dev *c2dev);
extern void c2_set_qp_state(struct c2_qp *, int);
extern struct c2_qp *c2_find_qpn(struct c2_dev *c2dev, int qpn);

/* PDs */
extern int c2_pd_alloc(struct c2_dev *c2dev, int privileged, struct c2_pd *pd);
extern void c2_pd_free(struct c2_dev *c2dev, struct c2_pd *pd);
extern int __devinit c2_init_pd_table(struct c2_dev *c2dev);
extern void __devexit c2_cleanup_pd_table(struct c2_dev *c2dev);

/* CQs */
extern int c2_init_cq(struct c2_dev *c2dev, int entries,
		      struct c2_ucontext *ctx, struct c2_cq *cq);
extern void c2_free_cq(struct c2_dev *c2dev, struct c2_cq *cq);
extern void c2_cq_event(struct c2_dev *c2dev, u32 mq_index);
extern void c2_cq_clean(struct c2_dev *c2dev, struct c2_qp *qp, u32 mq_index);
extern int c2_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
extern int c2_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);

/* CM */
extern int c2_llp_connect(struct iw_cm_id *cm_id,
			  struct iw_cm_conn_param *iw_param);
extern int c2_llp_accept(struct iw_cm_id *cm_id,
			 struct iw_cm_conn_param *iw_param);
extern int c2_llp_reject(struct iw_cm_id *cm_id, const void *pdata,
			 u8 pdata_len);
extern int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog);
extern int c2_llp_service_destroy(struct iw_cm_id *cm_id);

/* MM */
extern int c2_nsmr_register_phys_kern(struct c2_dev *c2dev, u64 *addr_list,
 				      int page_size, int pbl_depth, u32 length,
 				      u32 off, u64 *va, enum c2_acf acf,
				      struct c2_mr *mr);
extern int c2_stag_dealloc(struct c2_dev *c2dev, u32 stag_index);

/* AE */
extern void c2_ae_event(struct c2_dev *c2dev, u32 mq_index);

/* MQSP Allocator */
extern int c2_init_mqsp_pool(struct c2_dev *c2dev, gfp_t gfp_mask,
			     struct sp_chunk **root);
extern void c2_free_mqsp_pool(struct c2_dev *c2dev, struct sp_chunk *root);
extern u16 *c2_alloc_mqsp(struct c2_dev *c2dev, struct sp_chunk *head,
			  dma_addr_t *dma_addr, gfp_t gfp_mask);
extern void c2_free_mqsp(u16 * mqsp);
#endif
Commit	Line	Data
f94b533d TT	1	/*
	2	* Copyright (c) 2005 Ammasso, Inc. All rights reserved.
	3	* Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
	4	*
	5	* This software is available to you under a choice of one of two
	6	* licenses. You may choose to be licensed under the terms of the GNU
	7	* General Public License (GPL) Version 2, available from the file
	8	* COPYING in the main directory of this source tree, or the
	9	* OpenIB.org BSD license below:
	10	*
	11	* Redistribution and use in source and binary forms, with or
	12	* without modification, are permitted provided that the following
	13	* conditions are met:
	14	*
	15	* - Redistributions of source code must retain the above
	16	* copyright notice, this list of conditions and the following
	17	* disclaimer.
	18	*
	19	* - Redistributions in binary form must reproduce the above
	20	* copyright notice, this list of conditions and the following
	21	* disclaimer in the documentation and/or other materials
	22	* provided with the distribution.
	23	*
	24	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	25	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	26	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	27	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	28	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	29	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	30	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	31	* SOFTWARE.
	32	*/
	33
	34	#ifndef __C2_H
	35	#define __C2_H
	36
	37	#include <linux/netdevice.h>
	38	#include <linux/spinlock.h>
	39	#include <linux/kernel.h>
	40	#include <linux/pci.h>
	41	#include <linux/dma-mapping.h>
	42	#include <linux/idr.h>
	43	#include <asm/semaphore.h>
	44
	45	#include "c2_provider.h"
	46	#include "c2_mq.h"
	47	#include "c2_status.h"
	48
	49	#define DRV_NAME "c2"
	50	#define DRV_VERSION "1.1"
	51	#define PFX DRV_NAME ": "
	52
	53	#define BAR_0 0
	54	#define BAR_2 2
	55	#define BAR_4 4
	56
	57	#define RX_BUF_SIZE (1536 + 8)
	58	#define ETH_JUMBO_MTU 9000
	59	#define C2_MAGIC "CEPHEUS"
	60	#define C2_VERSION 4
	61	#define C2_IVN (18 & 0x7fffffff)
	62
	63	#define C2_REG0_SIZE (16 * 1024)
	64	#define C2_REG2_SIZE (2 * 1024 * 1024)
65	#define C2_REG4_SIZE (256 * 1024 * 1024)
66	#define C2_NUM_TX_DESC 341
67	#define C2_NUM_RX_DESC 256
68	#define C2_PCI_REGS_OFFSET (0x10000)
69	#define C2_RXP_HRXDQ_OFFSET (((C2_REG4_SIZE)/2))
70	#define C2_RXP_HRXDQ_SIZE (4096)
71	#define C2_TXP_HTXDQ_OFFSET (((C2_REG4_SIZE)/2) + C2_RXP_HRXDQ_SIZE)
72	#define C2_TXP_HTXDQ_SIZE (4096)
73	#define C2_TX_TIMEOUT (6*HZ)
74
75	/* CEPHEUS */
76	static const u8 c2_magic[] = {
77	0x43, 0x45, 0x50, 0x48, 0x45, 0x55, 0x53
78	};
79
80	enum adapter_pci_regs {
81	C2_REGS_MAGIC = 0x0000,
82	C2_REGS_VERS = 0x0008,
83	C2_REGS_IVN = 0x000C,
84	C2_REGS_PCI_WINSIZE = 0x0010,
85	C2_REGS_Q0_QSIZE = 0x0014,
86	C2_REGS_Q0_MSGSIZE = 0x0018,
87	C2_REGS_Q0_POOLSTART = 0x001C,
88	C2_REGS_Q0_SHARED = 0x0020,
89	C2_REGS_Q1_QSIZE = 0x0024,
90	C2_REGS_Q1_MSGSIZE = 0x0028,
91	C2_REGS_Q1_SHARED = 0x0030,
92	C2_REGS_Q2_QSIZE = 0x0034,
93	C2_REGS_Q2_MSGSIZE = 0x0038,
94	C2_REGS_Q2_SHARED = 0x0040,
95	C2_REGS_ENADDR = 0x004C,
96	C2_REGS_RDMA_ENADDR = 0x0054,
97	C2_REGS_HRX_CUR = 0x006C,
98	};
99
100	struct c2_adapter_pci_regs {
101	char reg_magic[8];
102	u32 version;
103	u32 ivn;
104	u32 pci_window_size;
105	u32 q0_q_size;
106	u32 q0_msg_size;
107	u32 q0_pool_start;
108	u32 q0_shared;
109	u32 q1_q_size;
110	u32 q1_msg_size;
111	u32 q1_pool_start;
112	u32 q1_shared;
113	u32 q2_q_size;
114	u32 q2_msg_size;
115	u32 q2_pool_start;
116	u32 q2_shared;
117	u32 log_start;
118	u32 log_size;
119	u8 host_enaddr[8];
120	u8 rdma_enaddr[8];
121	u32 crash_entry;
122	u32 crash_ready[2];
123	u32 fw_txd_cur;
124	u32 fw_hrxd_cur;
125	u32 fw_rxd_cur;
126	};
127
128	enum pci_regs {
129	C2_HISR = 0x0000,
130	C2_DISR = 0x0004,
131	C2_HIMR = 0x0008,
132	C2_DIMR = 0x000C,
133	C2_NISR0 = 0x0010,
134	C2_NISR1 = 0x0014,
135	C2_NIMR0 = 0x0018,
136	C2_NIMR1 = 0x001C,
137	C2_IDIS = 0x0020,
138	};
139
140	enum {
141	C2_PCI_HRX_INT = 1 << 8,
142	C2_PCI_HTX_INT = 1 << 17,
143	C2_PCI_HRX_QUI = 1 << 31,
144	};
145
146	/*
147	* Cepheus registers in BAR0.
148	*/
149	struct c2_pci_regs {
150	u32 hostisr;
151	u32 dmaisr;
152	u32 hostimr;
153	u32 dmaimr;
154	u32 netisr0;
155	u32 netisr1;
156	u32 netimr0;
157	u32 netimr1;
158	u32 int_disable;
159	};
160
161	/* TXP flags */
162	enum c2_txp_flags {
163	TXP_HTXD_DONE = 0,
164	TXP_HTXD_READY = 1 << 0,
165	TXP_HTXD_UNINIT = 1 << 1,
166	};
167
168	/* RXP flags */
169	enum c2_rxp_flags {
170	RXP_HRXD_UNINIT = 0,
171	RXP_HRXD_READY = 1 << 0,
172	RXP_HRXD_DONE = 1 << 1,
173	};
174
175	/* RXP status */
176	enum c2_rxp_status {
177	RXP_HRXD_ZERO = 0,
178	RXP_HRXD_OK = 1 << 0,
179	RXP_HRXD_BUF_OV = 1 << 1,
180	};
181
182	/* TXP descriptor fields */
183	enum txp_desc {
184	C2_TXP_FLAGS = 0x0000,
185	C2_TXP_LEN = 0x0002,
186	C2_TXP_ADDR = 0x0004,
187	};
188
189	/* RXP descriptor fields */
190	enum rxp_desc {
191	C2_RXP_FLAGS = 0x0000,
192	C2_RXP_STATUS = 0x0002,
193	C2_RXP_COUNT = 0x0004,
194	C2_RXP_LEN = 0x0006,
195	C2_RXP_ADDR = 0x0008,
196	};
197
198	struct c2_txp_desc {
199	u16 flags;
200	u16 len;
201	u64 addr;
202	} __attribute__ ((packed));
203
204	struct c2_rxp_desc {
205	u16 flags;
206	u16 status;
207	u16 count;
208	u16 len;
209	u64 addr;
210	} __attribute__ ((packed));
211
212	struct c2_rxp_hdr {
213	u16 flags;
214	u16 status;
215	u16 len;
216	u16 rsvd;
217	} __attribute__ ((packed));
218
219	struct c2_tx_desc {
220	u32 len;
221	u32 status;
222	dma_addr_t next_offset;
223	};
224
225	struct c2_rx_desc {
226	u32 len;
227	u32 status;
228	dma_addr_t next_offset;
229	};
230
231	struct c2_alloc {
232	u32 last;
233	u32 max;
234	spinlock_t lock;
235	unsigned long *table;
236	};
237
238	struct c2_array {
239	struct {
240	void **page;
241	int used;
242	} *page_list;
243	};
244
245	/*
246	* The MQ shared pointer pool is organized as a linked list of
247	* chunks. Each chunk contains a linked list of free shared pointers
248	* that can be allocated to a given user mode client.
249	*
250	*/
251	struct sp_chunk {
252	struct sp_chunk *next;
253	dma_addr_t dma_addr;
254	DECLARE_PCI_UNMAP_ADDR(mapping);
255	u16 head;
256	u16 shared_ptr[0];
257	};
258
259	struct c2_pd_table {
260	u32 last;
261	u32 max;
262	spinlock_t lock;
263	unsigned long *table;
264	};
265
266	struct c2_qp_table {
267	struct idr idr;
268	spinlock_t lock;
269	int last;
270	};
271
272	struct c2_element {
273	struct c2_element *next;
274	void ht_desc; / host descriptor */
275	void __iomem hw_desc; / hardware descriptor */
276	struct sk_buff *skb;
277	dma_addr_t mapaddr;
278	u32 maplen;
279	};
280
281	struct c2_ring {
282	struct c2_element *to_clean;
283	struct c2_element *to_use;
284	struct c2_element *start;
285	unsigned long count;
286	};
287
288	struct c2_dev {
289	struct ib_device ibdev;
290	void __iomem *regs;
291	void __iomem mmio_txp_ring; / remapped adapter memory for hw rings */
292	void __iomem *mmio_rxp_ring;
293	spinlock_t lock;
294	struct pci_dev *pcidev;
295	struct net_device *netdev;
296	struct net_device *pseudo_netdev;
297	unsigned int cur_tx;
298	unsigned int cur_rx;
299	u32 adapter_handle;
300	int device_cap_flags;
301	void __iomem kva; / KVA device memory */
302	unsigned long pa; /* PA device memory */
303	void **qptr_array;
304
e54f8188	305	struct kmem_cache *host_msg_cache;
f94b533d TT	306
	307	struct list_head cca_link; /* adapter list */
	308	struct list_head eh_wakeup_list; /* event wakeup list */
	309	wait_queue_head_t req_vq_wo;
	310
	311	/* Cached RNIC properties */
	312	struct ib_device_attr props;
	313
	314	struct c2_pd_table pd_table;
	315	struct c2_qp_table qp_table;
	316	int ports; /* num of GigE ports */
	317	int devnum;
	318	spinlock_t vqlock; /* sync vbs req MQ */
	319
	320	/* Verbs Queues */
	321	struct c2_mq req_vq; /* Verbs Request MQ */
	322	struct c2_mq rep_vq; /* Verbs Reply MQ */
	323	struct c2_mq aeq; /* Async Events MQ */
	324
	325	/* Kernel client MQs */
	326	struct sp_chunk *kern_mqsp_pool;
	327
	328	/* Device updates these values when posting messages to a host
	329	* target queue */
	330	u16 req_vq_shared;
	331	u16 rep_vq_shared;
	332	u16 aeq_shared;
	333	u16 irq_claimed;
	334
	335	/*
	336	* Shared host target pages for user-accessible MQs.
	337	*/
	338	int hthead; /* index of first free entry */
	339	void htpages; / kernel vaddr */
	340	int htlen; /* length of htpages memory */
	341	void htuva; / user mapped vaddr */
	342	spinlock_t htlock; /* serialize allocation */
	343
	344	u64 adapter_hint_uva; /* access to the activity FIFO */
	345
	346	// spinlock_t aeq_lock;
	347	// spinlock_t rnic_lock;
	348
dc544bc9	349	__be16 *hint_count;
f94b533d TT	350	dma_addr_t hint_count_dma;
	351	u16 hints_read;
	352
	353	int init; /* TRUE if it's ready */
	354	char ae_cache_name[16];
	355	char vq_cache_name[16];
	356	};
	357
	358	struct c2_port {
	359	u32 msg_enable;
	360	struct c2_dev *c2dev;
	361	struct net_device *netdev;
	362
	363	spinlock_t tx_lock;
	364	u32 tx_avail;
	365	struct c2_ring tx_ring;
	366	struct c2_ring rx_ring;
	367
	368	void mem; / PCI memory for host rings */
	369	dma_addr_t dma;
	370	unsigned long mem_size;
	371
	372	u32 rx_buf_size;
	373
	374	struct net_device_stats netstats;
	375	};
	376
	377	/*
	378	* Activity FIFO registers in BAR0.
	379	*/
	380	#define PCI_BAR0_HOST_HINT 0x100
	381	#define PCI_BAR0_ADAPTER_HINT 0x2000
	382
	383	/*
	384	* Ammasso PCI vendor id and Cepheus PCI device id.
	385	*/
	386	#define CQ_ARMED 0x01
	387	#define CQ_WAIT_FOR_DMA 0x80
	388
	389	/*
	390	* The format of a hint is as follows:
	391	* Lower 16 bits are the count of hints for the queue.
	392	* Next 15 bits are the qp_index
	393	* Upper most bit depends on who reads it:
	394	* If read by producer, then it means Full (1) or Not-Full (0)
	395	* If read by consumer, then it means Empty (1) or Not-Empty (0)
	396	*/
	397	#define C2_HINT_MAKE(q_index, hint_count) (((q_index) << 16) \| hint_count)
	398	#define C2_HINT_GET_INDEX(hint) (((hint) & 0x7FFF0000) >> 16)
	399	#define C2_HINT_GET_COUNT(hint) ((hint) & 0x0000FFFF)
	400
	401
	402	/*
	403	* The following defines the offset in SDRAM for the c2_adapter_pci_regs_t
	404	* struct.
	405	*/
	406	#define C2_ADAPTER_PCI_REGS_OFFSET 0x10000
	407
	408	#ifndef readq
	409	static inline u64 readq(const void __iomem * addr)
	410	{
	411	u64 ret = readl(addr + 4);
	412	ret <<= 32;
	413	ret \|= readl(addr);
414
415	return ret;
416	}
417	#endif
418
419	#ifndef writeq
420	static inline void __raw_writeq(u64 val, void __iomem * addr)
421	{
422	__raw_writel((u32) (val), addr);
423	__raw_writel((u32) (val >> 32), (addr + 4));
424	}
425	#endif
426
427	#define C2_SET_CUR_RX(c2dev, cur_rx) \
dc544bc9	428	__raw_writel((__force u32) cpu_to_be32(cur_rx), c2dev->mmio_txp_ring + 4092)
f94b533d TT	429
f94b533d TT	430	#define C2_GET_CUR_RX(c2dev) \
dc544bc9	431	be32_to_cpu((__force __be32) readl(c2dev->mmio_txp_ring + 4092))
f94b533d TT	432
	433	static inline struct c2_dev to_c2dev(struct ib_device ibdev)
	434	{
	435	return container_of(ibdev, struct c2_dev, ibdev);
	436	}
	437
	438	static inline int c2_errno(void *reply)
	439	{
	440	switch (c2_wr_get_result(reply)) {
	441	case C2_OK:
	442	return 0;
	443	case CCERR_NO_BUFS:
	444	case CCERR_INSUFFICIENT_RESOURCES:
	445	case CCERR_ZERO_RDMA_READ_RESOURCES:
	446	return -ENOMEM;
	447	case CCERR_MR_IN_USE:
	448	case CCERR_QP_IN_USE:
	449	return -EBUSY;
	450	case CCERR_ADDR_IN_USE:
	451	return -EADDRINUSE;
	452	case CCERR_ADDR_NOT_AVAIL:
	453	return -EADDRNOTAVAIL;
	454	case CCERR_CONN_RESET:
	455	return -ECONNRESET;
	456	case CCERR_NOT_IMPLEMENTED:
	457	case CCERR_INVALID_WQE:
	458	return -ENOSYS;
	459	case CCERR_QP_NOT_PRIVILEGED:
	460	return -EPERM;
	461	case CCERR_STACK_ERROR:
	462	return -EPROTO;
	463	case CCERR_ACCESS_VIOLATION:
	464	case CCERR_BASE_AND_BOUNDS_VIOLATION:
	465	return -EFAULT;
	466	case CCERR_STAG_STATE_NOT_INVALID:
	467	case CCERR_INVALID_ADDRESS:
	468	case CCERR_INVALID_CQ:
	469	case CCERR_INVALID_EP:
	470	case CCERR_INVALID_MODIFIER:
	471	case CCERR_INVALID_MTU:
	472	case CCERR_INVALID_PD_ID:
	473	case CCERR_INVALID_QP:
	474	case CCERR_INVALID_RNIC:
	475	case CCERR_INVALID_STAG:
	476	return -EINVAL;
	477	default:
	478	return -EAGAIN;
	479	}
	480	}
	481
	482	/* Device */
	483	extern int c2_register_device(struct c2_dev *c2dev);
	484	extern void c2_unregister_device(struct c2_dev *c2dev);
	485	extern int c2_rnic_init(struct c2_dev *c2dev);
	486	extern void c2_rnic_term(struct c2_dev *c2dev);
	487	extern void c2_rnic_interrupt(struct c2_dev *c2dev);
dc544bc9 RD	488	extern int c2_del_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask);
dc544bc9 RD	489	extern int c2_add_addr(struct c2_dev *c2dev, __be32 inaddr, __be32 inmask);
f94b533d TT	490
	491	/* QPs */
	492	extern int c2_alloc_qp(struct c2_dev c2dev, struct c2_pd pd,
	493	struct ib_qp_init_attr qp_attrs, struct c2_qp qp);
	494	extern void c2_free_qp(struct c2_dev c2dev, struct c2_qp qp);
	495	extern struct ib_qp c2_get_qp(struct ib_device device, int qpn);
	496	extern int c2_qp_modify(struct c2_dev c2dev, struct c2_qp qp,
	497	struct ib_qp_attr *attr, int attr_mask);
	498	extern int c2_qp_set_read_limits(struct c2_dev c2dev, struct c2_qp qp,
	499	int ord, int ird);
	500	extern int c2_post_send(struct ib_qp ibqp, struct ib_send_wr ib_wr,
	501	struct ib_send_wr **bad_wr);
	502	extern int c2_post_receive(struct ib_qp ibqp, struct ib_recv_wr ib_wr,
	503	struct ib_recv_wr **bad_wr);
	504	extern void __devinit c2_init_qp_table(struct c2_dev *c2dev);
	505	extern void __devexit c2_cleanup_qp_table(struct c2_dev *c2dev);
	506	extern void c2_set_qp_state(struct c2_qp *, int);
	507	extern struct c2_qp c2_find_qpn(struct c2_dev c2dev, int qpn);
	508
	509	/* PDs */
	510	extern int c2_pd_alloc(struct c2_dev c2dev, int privileged, struct c2_pd pd);
	511	extern void c2_pd_free(struct c2_dev c2dev, struct c2_pd pd);
	512	extern int __devinit c2_init_pd_table(struct c2_dev *c2dev);
	513	extern void __devexit c2_cleanup_pd_table(struct c2_dev *c2dev);
	514
	515	/* CQs */
	516	extern int c2_init_cq(struct c2_dev *c2dev, int entries,
	517	struct c2_ucontext ctx, struct c2_cq cq);
	518	extern void c2_free_cq(struct c2_dev c2dev, struct c2_cq cq);
	519	extern void c2_cq_event(struct c2_dev *c2dev, u32 mq_index);
	520	extern void c2_cq_clean(struct c2_dev c2dev, struct c2_qp qp, u32 mq_index);
	521	extern int c2_poll_cq(struct ib_cq ibcq, int num_entries, struct ib_wc entry);
ed23a727	522	extern int c2_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
f94b533d TT	523
	524	/* CM */
	525	extern int c2_llp_connect(struct iw_cm_id *cm_id,
	526	struct iw_cm_conn_param *iw_param);
	527	extern int c2_llp_accept(struct iw_cm_id *cm_id,
	528	struct iw_cm_conn_param *iw_param);
	529	extern int c2_llp_reject(struct iw_cm_id cm_id, const void pdata,
	530	u8 pdata_len);
	531	extern int c2_llp_service_create(struct iw_cm_id *cm_id, int backlog);
	532	extern int c2_llp_service_destroy(struct iw_cm_id *cm_id);
	533
	534	/* MM */
	535	extern int c2_nsmr_register_phys_kern(struct c2_dev c2dev, u64 addr_list,
	536	int page_size, int pbl_depth, u32 length,
	537	u32 off, u64 *va, enum c2_acf acf,
	538	struct c2_mr *mr);
	539	extern int c2_stag_dealloc(struct c2_dev *c2dev, u32 stag_index);
	540
	541	/* AE */
	542	extern void c2_ae_event(struct c2_dev *c2dev, u32 mq_index);
	543
	544	/* MQSP Allocator */
	545	extern int c2_init_mqsp_pool(struct c2_dev *c2dev, gfp_t gfp_mask,
	546	struct sp_chunk **root);
	547	extern void c2_free_mqsp_pool(struct c2_dev c2dev, struct sp_chunk root);
	548	extern u16 c2_alloc_mqsp(struct c2_dev c2dev, struct sp_chunk *head,
	549	dma_addr_t *dma_addr, gfp_t gfp_mask);
	550	extern void c2_free_mqsp(u16 * mqsp);
	551	#endif