[net-next-2.6.git] / drivers / net / ehea / ehea_qmr.h

/*
 *  linux/drivers/net/ehea/ehea_qmr.h
 *
 *  eHEA ethernet device driver for IBM eServer System p
 *
 *  (C) Copyright IBM Corp. 2006
 *
 *  Authors:
 *       Christoph Raisch <raisch@de.ibm.com>
 *       Jan-Bernd Themann <themann@de.ibm.com>
 *       Thomas Klein <tklein@de.ibm.com>
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef __EHEA_QMR_H__
#define __EHEA_QMR_H__

#include "ehea.h"
#include "ehea_hw.h"

/*
 * page size of ehea hardware queues
 */

#define EHEA_PAGESHIFT         12
#define EHEA_PAGESIZE          (1UL << EHEA_PAGESHIFT)
#define EHEA_SECTSIZE          (1UL << 24)
#define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> EHEA_PAGESHIFT)

#if (1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE
#error eHEA module can't work if kernel sectionsize < ehea sectionsize
#endif

/* Some abbreviations used here:
 *
 * WQE  - Work Queue Entry
 * SWQE - Send Work Queue Entry
 * RWQE - Receive Work Queue Entry
 * CQE  - Completion Queue Entry
 * EQE  - Event Queue Entry
 * MR   - Memory Region
 */

/* Use of WR_ID field for EHEA */
#define EHEA_WR_ID_COUNT   EHEA_BMASK_IBM(0, 19)
#define EHEA_WR_ID_TYPE    EHEA_BMASK_IBM(20, 23)
#define EHEA_SWQE2_TYPE    0x1
#define EHEA_SWQE3_TYPE    0x2
#define EHEA_RWQE2_TYPE    0x3
#define EHEA_RWQE3_TYPE    0x4
#define EHEA_WR_ID_INDEX   EHEA_BMASK_IBM(24, 47)
#define EHEA_WR_ID_REFILL  EHEA_BMASK_IBM(48, 63)

struct ehea_vsgentry {
	u64 vaddr;
	u32 l_key;
	u32 len;
};

/* maximum number of sg entries allowed in a WQE */
#define EHEA_MAX_WQE_SG_ENTRIES  	252
#define SWQE2_MAX_IMM            	(0xD0 - 0x30)
#define SWQE3_MAX_IMM            	224

/* tx control flags for swqe */
#define EHEA_SWQE_CRC                   0x8000
#define EHEA_SWQE_IP_CHECKSUM           0x4000
#define EHEA_SWQE_TCP_CHECKSUM          0x2000
#define EHEA_SWQE_TSO                   0x1000
#define EHEA_SWQE_SIGNALLED_COMPLETION  0x0800
#define EHEA_SWQE_VLAN_INSERT           0x0400
#define EHEA_SWQE_IMM_DATA_PRESENT      0x0200
#define EHEA_SWQE_DESCRIPTORS_PRESENT   0x0100
#define EHEA_SWQE_WRAP_CTL_REC          0x0080
#define EHEA_SWQE_WRAP_CTL_FORCE        0x0040
#define EHEA_SWQE_BIND                  0x0020
#define EHEA_SWQE_PURGE                 0x0010

/* sizeof(struct ehea_swqe) less the union */
#define SWQE_HEADER_SIZE		32

struct ehea_swqe {
	u64 wr_id;
	u16 tx_control;
	u16 vlan_tag;
	u8 reserved1;
	u8 ip_start;
	u8 ip_end;
	u8 immediate_data_length;
	u8 tcp_offset;
	u8 reserved2;
	u16 tcp_end;
	u8 wrap_tag;
	u8 descriptors;		/* number of valid descriptors in WQE */
	u16 reserved3;
	u16 reserved4;
	u16 mss;
	u32 reserved5;
	union {
		/*  Send WQE Format 1 */
		struct {
			struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
		} no_immediate_data;

		/*  Send WQE Format 2 */
		struct {
			struct ehea_vsgentry sg_entry;
			/* 0x30 */
			u8 immediate_data[SWQE2_MAX_IMM];
			/* 0xd0 */
			struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES-1];
		} immdata_desc __attribute__ ((packed));

		/*  Send WQE Format 3 */
		struct {
			u8 immediate_data[SWQE3_MAX_IMM];
		} immdata_nodesc;
	} u;
};

struct ehea_rwqe {
	u64 wr_id;		/* work request ID */
	u8 reserved1[5];
	u8 data_segments;
	u16 reserved2;
	u64 reserved3;
	u64 reserved4;
	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
};

#define EHEA_CQE_VLAN_TAG_XTRACT   0x0400

#define EHEA_CQE_TYPE_RQ           0x60
#define EHEA_CQE_STAT_ERR_MASK     0x700F
#define EHEA_CQE_STAT_FAT_ERR_MASK 0xF
#define EHEA_CQE_STAT_ERR_TCP      0x4000
#define EHEA_CQE_STAT_ERR_IP       0x2000
#define EHEA_CQE_STAT_ERR_CRC      0x1000

struct ehea_cqe {
	u64 wr_id;		/* work request ID from WQE */
	u8 type;
	u8 valid;
	u16 status;
	u16 reserved1;
	u16 num_bytes_transfered;
	u16 vlan_tag;
	u16 inet_checksum_value;
	u8 reserved2;
	u8 header_length;
	u16 reserved3;
	u16 page_offset;
	u16 wqe_count;
	u32 qp_token;
	u32 timestamp;
	u32 reserved4;
	u64 reserved5[3];
};

#define EHEA_EQE_VALID           EHEA_BMASK_IBM(0, 0)
#define EHEA_EQE_IS_CQE          EHEA_BMASK_IBM(1, 1)
#define EHEA_EQE_IDENTIFIER      EHEA_BMASK_IBM(2, 7)
#define EHEA_EQE_QP_CQ_NUMBER    EHEA_BMASK_IBM(8, 31)
#define EHEA_EQE_QP_TOKEN        EHEA_BMASK_IBM(32, 63)
#define EHEA_EQE_CQ_TOKEN        EHEA_BMASK_IBM(32, 63)
#define EHEA_EQE_KEY             EHEA_BMASK_IBM(32, 63)
#define EHEA_EQE_PORT_NUMBER     EHEA_BMASK_IBM(56, 63)
#define EHEA_EQE_EQ_NUMBER       EHEA_BMASK_IBM(48, 63)
#define EHEA_EQE_SM_ID           EHEA_BMASK_IBM(48, 63)
#define EHEA_EQE_SM_MECH_NUMBER  EHEA_BMASK_IBM(48, 55)
#define EHEA_EQE_SM_PORT_NUMBER  EHEA_BMASK_IBM(56, 63)

struct ehea_eqe {
	u64 entry;
};

#define ERROR_DATA_LENGTH  EHEA_BMASK_IBM(52,63)
#define ERROR_DATA_TYPE    EHEA_BMASK_IBM(0,7)

static inline void *hw_qeit_calc(struct hw_queue *queue, u64 q_offset)
{
	struct ehea_page *current_page;

	if (q_offset >= queue->queue_length)
		q_offset -= queue->queue_length;
	current_page = (queue->queue_pages)[q_offset >> EHEA_PAGESHIFT];
	return &current_page->entries[q_offset & (EHEA_PAGESIZE - 1)];
}

static inline void *hw_qeit_get(struct hw_queue *queue)
{
	return hw_qeit_calc(queue, queue->current_q_offset);
}

static inline void hw_qeit_inc(struct hw_queue *queue)
{
	queue->current_q_offset += queue->qe_size;
	if (queue->current_q_offset >= queue->queue_length) {
		queue->current_q_offset = 0;
		/* toggle the valid flag */
		queue->toggle_state = (~queue->toggle_state) & 1;
	}
}

static inline void *hw_qeit_get_inc(struct hw_queue *queue)
{
	void *retvalue = hw_qeit_get(queue);
	hw_qeit_inc(queue);
	return retvalue;
}

static inline void *hw_qeit_get_inc_valid(struct hw_queue *queue)
{
	struct ehea_cqe *retvalue = hw_qeit_get(queue);
	u8 valid = retvalue->valid;
	void *pref;

	if ((valid >> 7) == (queue->toggle_state & 1)) {
		/* this is a good one */
		hw_qeit_inc(queue);
		pref = hw_qeit_calc(queue, queue->current_q_offset);
		prefetch(pref);
		prefetch(pref + 128);
	} else
		retvalue = NULL;
	return retvalue;
}

static inline void *hw_qeit_get_valid(struct hw_queue *queue)
{
	struct ehea_cqe *retvalue = hw_qeit_get(queue);
	void *pref;
	u8 valid;

	pref = hw_qeit_calc(queue, queue->current_q_offset);
	prefetch(pref);
	prefetch(pref + 128);
	prefetch(pref + 256);
	valid = retvalue->valid;
	if (!((valid >> 7) == (queue->toggle_state & 1)))
		retvalue = NULL;
	return retvalue;
}

static inline void *hw_qeit_reset(struct hw_queue *queue)
{
	queue->current_q_offset = 0;
	return hw_qeit_get(queue);
}

static inline void *hw_qeit_eq_get_inc(struct hw_queue *queue)
{
	u64 last_entry_in_q = queue->queue_length - queue->qe_size;
	void *retvalue;

	retvalue = hw_qeit_get(queue);
	queue->current_q_offset += queue->qe_size;
	if (queue->current_q_offset > last_entry_in_q) {
		queue->current_q_offset = 0;
		queue->toggle_state = (~queue->toggle_state) & 1;
	}
	return retvalue;
}

static inline void *hw_eqit_eq_get_inc_valid(struct hw_queue *queue)
{
	void *retvalue = hw_qeit_get(queue);
	u32 qe = *(u8*)retvalue;
	if ((qe >> 7) == (queue->toggle_state & 1))
		hw_qeit_eq_get_inc(queue);
	else
		retvalue = NULL;
	return retvalue;
}

static inline struct ehea_rwqe *ehea_get_next_rwqe(struct ehea_qp *qp,
						   int rq_nr)
{
	struct hw_queue *queue;

	if (rq_nr == 1)
		queue = &qp->hw_rqueue1;
	else if (rq_nr == 2)
		queue = &qp->hw_rqueue2;
	else
		queue = &qp->hw_rqueue3;

	return hw_qeit_get_inc(queue);
}

static inline struct ehea_swqe *ehea_get_swqe(struct ehea_qp *my_qp,
					      int *wqe_index)
{
	struct hw_queue *queue = &my_qp->hw_squeue;
	struct ehea_swqe *wqe_p;

	*wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_SQ);
	wqe_p = hw_qeit_get_inc(&my_qp->hw_squeue);

	return wqe_p;
}

static inline void ehea_post_swqe(struct ehea_qp *my_qp, struct ehea_swqe *swqe)
{
	iosync();
	ehea_update_sqa(my_qp, 1);
}

static inline struct ehea_cqe *ehea_poll_rq1(struct ehea_qp *qp, int *wqe_index)
{
	struct hw_queue *queue = &qp->hw_rqueue1;

	*wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_RQ1);
	return hw_qeit_get_valid(queue);
}

static inline void ehea_inc_cq(struct ehea_cq *cq)
{
	hw_qeit_inc(&cq->hw_queue);
}

static inline void ehea_inc_rq1(struct ehea_qp *qp)
{
	hw_qeit_inc(&qp->hw_rqueue1);
}

static inline struct ehea_cqe *ehea_poll_cq(struct ehea_cq *my_cq)
{
	return hw_qeit_get_valid(&my_cq->hw_queue);
}

#define EHEA_CQ_REGISTER_ORIG 0
#define EHEA_EQ_REGISTER_ORIG 0

enum ehea_eq_type {
	EHEA_EQ = 0,		/* event queue              */
	EHEA_NEQ		/* notification event queue */
};

struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter,
			       enum ehea_eq_type type,
			       const u32 length, const u8 eqe_gen);

int ehea_destroy_eq(struct ehea_eq *eq);

struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq);

struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter, int cqe,
			       u64 eq_handle, u32 cq_token);

int ehea_destroy_cq(struct ehea_cq *cq);

struct ehea_qp *ehea_create_qp(struct ehea_adapter * adapter, u32 pd,
			       struct ehea_qp_init_attr *init_attr);

int ehea_destroy_qp(struct ehea_qp *qp);

int ehea_reg_kernel_mr(struct ehea_adapter *adapter, struct ehea_mr *mr);

int ehea_gen_smr(struct ehea_adapter *adapter, struct ehea_mr *old_mr,
		 struct ehea_mr *shared_mr);

int ehea_rem_mr(struct ehea_mr *mr);

void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);

int ehea_create_busmap( void );
void ehea_destroy_busmap( void );
u64 ehea_map_vaddr(void *caddr);

#endif	/* __EHEA_QMR_H__ */
Commit	Line	Data
7a291083 JBT	1	/*
	2	* linux/drivers/net/ehea/ehea_qmr.h
	3	*
	4	* eHEA ethernet device driver for IBM eServer System p
	5	*
	6	* (C) Copyright IBM Corp. 2006
	7	*
	8	* Authors:
	9	* Christoph Raisch <raisch@de.ibm.com>
	10	* Jan-Bernd Themann <themann@de.ibm.com>
	11	* Thomas Klein <tklein@de.ibm.com>
	12	*
	13	*
	14	* This program is free software; you can redistribute it and/or modify
	15	* it under the terms of the GNU General Public License as published by
	16	* the Free Software Foundation; either version 2, or (at your option)
	17	* any later version.
	18	*
	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	27	*/
	28
	29	#ifndef __EHEA_QMR_H__
	30	#define __EHEA_QMR_H__
	31
	32	#include "ehea.h"
	33	#include "ehea_hw.h"
	34
	35	/*
	36	* page size of ehea hardware queues
	37	*/
	38
44c82152 TK	39	#define EHEA_PAGESHIFT 12
	40	#define EHEA_PAGESIZE (1UL << EHEA_PAGESHIFT)
	41	#define EHEA_SECTSIZE (1UL << 24)
2c69448b	42	#define EHEA_PAGES_PER_SECTION (EHEA_SECTSIZE >> EHEA_PAGESHIFT)
44c82152 TK	43
	44	#if (1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE
	45	#error eHEA module can't work if kernel sectionsize < ehea sectionsize
	46	#endif
7a291083 JBT	47
	48	/* Some abbreviations used here:
	49	*
	50	* WQE - Work Queue Entry
	51	* SWQE - Send Work Queue Entry
	52	* RWQE - Receive Work Queue Entry
	53	* CQE - Completion Queue Entry
	54	* EQE - Event Queue Entry
	55	* MR - Memory Region
	56	*/
	57
	58	/* Use of WR_ID field for EHEA */
	59	#define EHEA_WR_ID_COUNT EHEA_BMASK_IBM(0, 19)
	60	#define EHEA_WR_ID_TYPE EHEA_BMASK_IBM(20, 23)
	61	#define EHEA_SWQE2_TYPE 0x1
	62	#define EHEA_SWQE3_TYPE 0x2
	63	#define EHEA_RWQE2_TYPE 0x3
	64	#define EHEA_RWQE3_TYPE 0x4
	65	#define EHEA_WR_ID_INDEX EHEA_BMASK_IBM(24, 47)
	66	#define EHEA_WR_ID_REFILL EHEA_BMASK_IBM(48, 63)
	67
	68	struct ehea_vsgentry {
	69	u64 vaddr;
	70	u32 l_key;
	71	u32 len;
	72	};
	73
	74	/* maximum number of sg entries allowed in a WQE */
	75	#define EHEA_MAX_WQE_SG_ENTRIES 252
	76	#define SWQE2_MAX_IMM (0xD0 - 0x30)
	77	#define SWQE3_MAX_IMM 224
	78
	79	/* tx control flags for swqe */
	80	#define EHEA_SWQE_CRC 0x8000
	81	#define EHEA_SWQE_IP_CHECKSUM 0x4000
	82	#define EHEA_SWQE_TCP_CHECKSUM 0x2000
	83	#define EHEA_SWQE_TSO 0x1000
	84	#define EHEA_SWQE_SIGNALLED_COMPLETION 0x0800
	85	#define EHEA_SWQE_VLAN_INSERT 0x0400
	86	#define EHEA_SWQE_IMM_DATA_PRESENT 0x0200
	87	#define EHEA_SWQE_DESCRIPTORS_PRESENT 0x0100
	88	#define EHEA_SWQE_WRAP_CTL_REC 0x0080
	89	#define EHEA_SWQE_WRAP_CTL_FORCE 0x0040
	90	#define EHEA_SWQE_BIND 0x0020
	91	#define EHEA_SWQE_PURGE 0x0010
	92
	93	/* sizeof(struct ehea_swqe) less the union */
	94	#define SWQE_HEADER_SIZE 32
	95
	96	struct ehea_swqe {
	97	u64 wr_id;
	98	u16 tx_control;
	99	u16 vlan_tag;
	100	u8 reserved1;
	101	u8 ip_start;
	102	u8 ip_end;
	103	u8 immediate_data_length;
	104	u8 tcp_offset;
	105	u8 reserved2;
	106	u16 tcp_end;
	107	u8 wrap_tag;
	108	u8 descriptors; /* number of valid descriptors in WQE */
	109	u16 reserved3;
	110	u16 reserved4;
111	u16 mss;
112	u32 reserved5;
113	union {
114	/* Send WQE Format 1 */
115	struct {
116	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
117	} no_immediate_data;
118
119	/* Send WQE Format 2 */
120	struct {
121	struct ehea_vsgentry sg_entry;
122	/* 0x30 */
123	u8 immediate_data[SWQE2_MAX_IMM];
124	/* 0xd0 */
125	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES-1];
126	} immdata_desc __attribute__ ((packed));
127
128	/* Send WQE Format 3 */
129	struct {
130	u8 immediate_data[SWQE3_MAX_IMM];
131	} immdata_nodesc;
132	} u;
133	};
134
135	struct ehea_rwqe {
136	u64 wr_id; /* work request ID */
137	u8 reserved1[5];
138	u8 data_segments;
139	u16 reserved2;
140	u64 reserved3;
141	u64 reserved4;
142	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
143	};
144
145	#define EHEA_CQE_VLAN_TAG_XTRACT 0x0400
146
147	#define EHEA_CQE_TYPE_RQ 0x60
58dd8258 TK	148	#define EHEA_CQE_STAT_ERR_MASK 0x700F
58dd8258 TK	149	#define EHEA_CQE_STAT_FAT_ERR_MASK 0xF
7a291083	150	#define EHEA_CQE_STAT_ERR_TCP 0x4000
acbddb59 JBT	151	#define EHEA_CQE_STAT_ERR_IP 0x2000
acbddb59 JBT	152	#define EHEA_CQE_STAT_ERR_CRC 0x1000
7a291083 JBT	153
	154	struct ehea_cqe {
	155	u64 wr_id; /* work request ID from WQE */
	156	u8 type;
	157	u8 valid;
	158	u16 status;
	159	u16 reserved1;
	160	u16 num_bytes_transfered;
	161	u16 vlan_tag;
	162	u16 inet_checksum_value;
	163	u8 reserved2;
	164	u8 header_length;
	165	u16 reserved3;
	166	u16 page_offset;
	167	u16 wqe_count;
	168	u32 qp_token;
	169	u32 timestamp;
	170	u32 reserved4;
	171	u64 reserved5[3];
	172	};
	173
	174	#define EHEA_EQE_VALID EHEA_BMASK_IBM(0, 0)
	175	#define EHEA_EQE_IS_CQE EHEA_BMASK_IBM(1, 1)
	176	#define EHEA_EQE_IDENTIFIER EHEA_BMASK_IBM(2, 7)
	177	#define EHEA_EQE_QP_CQ_NUMBER EHEA_BMASK_IBM(8, 31)
	178	#define EHEA_EQE_QP_TOKEN EHEA_BMASK_IBM(32, 63)
	179	#define EHEA_EQE_CQ_TOKEN EHEA_BMASK_IBM(32, 63)
	180	#define EHEA_EQE_KEY EHEA_BMASK_IBM(32, 63)
	181	#define EHEA_EQE_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
	182	#define EHEA_EQE_EQ_NUMBER EHEA_BMASK_IBM(48, 63)
	183	#define EHEA_EQE_SM_ID EHEA_BMASK_IBM(48, 63)
	184	#define EHEA_EQE_SM_MECH_NUMBER EHEA_BMASK_IBM(48, 55)
	185	#define EHEA_EQE_SM_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
	186
	187	struct ehea_eqe {
	188	u64 entry;
	189	};
	190
d2db9eea JBT	191	#define ERROR_DATA_LENGTH EHEA_BMASK_IBM(52,63)
	192	#define ERROR_DATA_TYPE EHEA_BMASK_IBM(0,7)
	193
7a291083 JBT	194	static inline void hw_qeit_calc(struct hw_queue queue, u64 q_offset)
	195	{
	196	struct ehea_page *current_page;
	197
	198	if (q_offset >= queue->queue_length)
	199	q_offset -= queue->queue_length;
	200	current_page = (queue->queue_pages)[q_offset >> EHEA_PAGESHIFT];
	201	return &current_page->entries[q_offset & (EHEA_PAGESIZE - 1)];
	202	}
	203
	204	static inline void hw_qeit_get(struct hw_queue queue)
	205	{
	206	return hw_qeit_calc(queue, queue->current_q_offset);
	207	}
	208
	209	static inline void hw_qeit_inc(struct hw_queue *queue)
	210	{
	211	queue->current_q_offset += queue->qe_size;
	212	if (queue->current_q_offset >= queue->queue_length) {
	213	queue->current_q_offset = 0;
	214	/* toggle the valid flag */
	215	queue->toggle_state = (~queue->toggle_state) & 1;
	216	}
	217	}
	218
	219	static inline void hw_qeit_get_inc(struct hw_queue queue)
	220	{
	221	void *retvalue = hw_qeit_get(queue);
	222	hw_qeit_inc(queue);
	223	return retvalue;
	224	}
	225
	226	static inline void hw_qeit_get_inc_valid(struct hw_queue queue)
	227	{
	228	struct ehea_cqe *retvalue = hw_qeit_get(queue);
	229	u8 valid = retvalue->valid;
	230	void *pref;
	231
	232	if ((valid >> 7) == (queue->toggle_state & 1)) {
	233	/* this is a good one */
	234	hw_qeit_inc(queue);
	235	pref = hw_qeit_calc(queue, queue->current_q_offset);
	236	prefetch(pref);
	237	prefetch(pref + 128);
	238	} else
	239	retvalue = NULL;
	240	return retvalue;
	241	}
	242
	243	static inline void hw_qeit_get_valid(struct hw_queue queue)
	244	{
	245	struct ehea_cqe *retvalue = hw_qeit_get(queue);
	246	void *pref;
	247	u8 valid;
	248
	249	pref = hw_qeit_calc(queue, queue->current_q_offset);
	250	prefetch(pref);
	251	prefetch(pref + 128);
	252	prefetch(pref + 256);
	253	valid = retvalue->valid;
	254	if (!((valid >> 7) == (queue->toggle_state & 1)))
	255	retvalue = NULL;
	256	return retvalue;
	257	}
258
259	static inline void hw_qeit_reset(struct hw_queue queue)
260	{
261	queue->current_q_offset = 0;
262	return hw_qeit_get(queue);
263	}
264
265	static inline void hw_qeit_eq_get_inc(struct hw_queue queue)
266	{
267	u64 last_entry_in_q = queue->queue_length - queue->qe_size;
268	void *retvalue;
269
270	retvalue = hw_qeit_get(queue);
271	queue->current_q_offset += queue->qe_size;
272	if (queue->current_q_offset > last_entry_in_q) {
273	queue->current_q_offset = 0;
274	queue->toggle_state = (~queue->toggle_state) & 1;
275	}
276	return retvalue;
277	}
278
279	static inline void hw_eqit_eq_get_inc_valid(struct hw_queue queue)
280	{
281	void *retvalue = hw_qeit_get(queue);
282	u32 qe = (u8)retvalue;
283	if ((qe >> 7) == (queue->toggle_state & 1))
284	hw_qeit_eq_get_inc(queue);
285	else
286	retvalue = NULL;
287	return retvalue;
288	}
289
290	static inline struct ehea_rwqe ehea_get_next_rwqe(struct ehea_qp qp,
291	int rq_nr)
292	{
293	struct hw_queue *queue;
294
295	if (rq_nr == 1)
296	queue = &qp->hw_rqueue1;
297	else if (rq_nr == 2)
298	queue = &qp->hw_rqueue2;
299	else
300	queue = &qp->hw_rqueue3;
301
302	return hw_qeit_get_inc(queue);
303	}
304
305	static inline struct ehea_swqe ehea_get_swqe(struct ehea_qp my_qp,
306	int *wqe_index)
307	{
308	struct hw_queue *queue = &my_qp->hw_squeue;
309	struct ehea_swqe *wqe_p;
310
311	*wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_SQ);
312	wqe_p = hw_qeit_get_inc(&my_qp->hw_squeue);
313
314	return wqe_p;
315	}
316
317	static inline void ehea_post_swqe(struct ehea_qp my_qp, struct ehea_swqe swqe)
318	{
319	iosync();
320	ehea_update_sqa(my_qp, 1);
321	}
322
323	static inline struct ehea_cqe ehea_poll_rq1(struct ehea_qp qp, int *wqe_index)
324	{
325	struct hw_queue *queue = &qp->hw_rqueue1;
326
327	*wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_RQ1);
328	return hw_qeit_get_valid(queue);
329	}
330
18604c54 JBT	331	static inline void ehea_inc_cq(struct ehea_cq *cq)
	332	{
	333	hw_qeit_inc(&cq->hw_queue);
	334	}
	335
7a291083 JBT	336	static inline void ehea_inc_rq1(struct ehea_qp *qp)
	337	{
	338	hw_qeit_inc(&qp->hw_rqueue1);
	339	}
	340
	341	static inline struct ehea_cqe ehea_poll_cq(struct ehea_cq my_cq)
	342	{
18604c54	343	return hw_qeit_get_valid(&my_cq->hw_queue);
7a291083 JBT	344	}
	345
	346	#define EHEA_CQ_REGISTER_ORIG 0
	347	#define EHEA_EQ_REGISTER_ORIG 0
	348
	349	enum ehea_eq_type {
	350	EHEA_EQ = 0, /* event queue */
	351	EHEA_NEQ /* notification event queue */
	352	};
	353
	354	struct ehea_eq ehea_create_eq(struct ehea_adapter adapter,
	355	enum ehea_eq_type type,
	356	const u32 length, const u8 eqe_gen);
	357
	358	int ehea_destroy_eq(struct ehea_eq *eq);
	359
	360	struct ehea_eqe ehea_poll_eq(struct ehea_eq eq);
	361
	362	struct ehea_cq ehea_create_cq(struct ehea_adapter adapter, int cqe,
	363	u64 eq_handle, u32 cq_token);
	364
	365	int ehea_destroy_cq(struct ehea_cq *cq);
	366
	367	struct ehea_qp ehea_create_qp(struct ehea_adapter adapter, u32 pd,
	368	struct ehea_qp_init_attr *init_attr);
	369
	370	int ehea_destroy_qp(struct ehea_qp *qp);
	371
e542aa6b JBT	372	int ehea_reg_kernel_mr(struct ehea_adapter adapter, struct ehea_mr mr);
	373
	374	int ehea_gen_smr(struct ehea_adapter adapter, struct ehea_mr old_mr,
	375	struct ehea_mr *shared_mr);
	376
	377	int ehea_rem_mr(struct ehea_mr *mr);
7a291083	378
d2db9eea JBT	379	void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
d2db9eea JBT	380
44c82152 TK	381	int ehea_create_busmap( void );
	382	void ehea_destroy_busmap( void );
	383	u64 ehea_map_vaddr(void *caddr);
	384
7a291083	385	#endif /* __EHEA_QMR_H__ */