[deliverable/linux.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)
#define EHEA_HUGEPAGESHIFT     34
#define EHEA_HUGEPAGE_SIZE     (1UL << EHEA_HUGEPAGESHIFT)
#define EHEA_HUGEPAGE_PFN_MASK ((EHEA_HUGEPAGE_SIZE - 1) >> PAGE_SHIFT)

#if ((1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE)
#error eHEA module cannot 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_add_sect_bmap(unsigned long pfn, unsigned long nr_pages);
int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages);
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)
3fd09c45 TK	43	#define EHEA_HUGEPAGESHIFT 34
	44	#define EHEA_HUGEPAGE_SIZE (1UL << EHEA_HUGEPAGESHIFT)
	45	#define EHEA_HUGEPAGE_PFN_MASK ((EHEA_HUGEPAGE_SIZE - 1) >> PAGE_SHIFT)
44c82152	46
f67c6275 DM	47	#if ((1UL << SECTION_SIZE_BITS) < EHEA_SECTSIZE)
f67c6275 DM	48	#error eHEA module cannot work if kernel sectionsize < ehea sectionsize
44c82152	49	#endif
7a291083 JBT	50
	51	/* Some abbreviations used here:
	52	*
	53	* WQE - Work Queue Entry
	54	* SWQE - Send Work Queue Entry
	55	* RWQE - Receive Work Queue Entry
	56	* CQE - Completion Queue Entry
	57	* EQE - Event Queue Entry
	58	* MR - Memory Region
	59	*/
	60
	61	/* Use of WR_ID field for EHEA */
	62	#define EHEA_WR_ID_COUNT EHEA_BMASK_IBM(0, 19)
	63	#define EHEA_WR_ID_TYPE EHEA_BMASK_IBM(20, 23)
	64	#define EHEA_SWQE2_TYPE 0x1
	65	#define EHEA_SWQE3_TYPE 0x2
	66	#define EHEA_RWQE2_TYPE 0x3
	67	#define EHEA_RWQE3_TYPE 0x4
	68	#define EHEA_WR_ID_INDEX EHEA_BMASK_IBM(24, 47)
	69	#define EHEA_WR_ID_REFILL EHEA_BMASK_IBM(48, 63)
	70
	71	struct ehea_vsgentry {
	72	u64 vaddr;
	73	u32 l_key;
	74	u32 len;
	75	};
	76
	77	/* maximum number of sg entries allowed in a WQE */
	78	#define EHEA_MAX_WQE_SG_ENTRIES 252
	79	#define SWQE2_MAX_IMM (0xD0 - 0x30)
	80	#define SWQE3_MAX_IMM 224
	81
	82	/* tx control flags for swqe */
	83	#define EHEA_SWQE_CRC 0x8000
	84	#define EHEA_SWQE_IP_CHECKSUM 0x4000
	85	#define EHEA_SWQE_TCP_CHECKSUM 0x2000
	86	#define EHEA_SWQE_TSO 0x1000
	87	#define EHEA_SWQE_SIGNALLED_COMPLETION 0x0800
	88	#define EHEA_SWQE_VLAN_INSERT 0x0400
	89	#define EHEA_SWQE_IMM_DATA_PRESENT 0x0200
	90	#define EHEA_SWQE_DESCRIPTORS_PRESENT 0x0100
	91	#define EHEA_SWQE_WRAP_CTL_REC 0x0080
	92	#define EHEA_SWQE_WRAP_CTL_FORCE 0x0040
	93	#define EHEA_SWQE_BIND 0x0020
	94	#define EHEA_SWQE_PURGE 0x0010
	95
	96	/* sizeof(struct ehea_swqe) less the union */
	97	#define SWQE_HEADER_SIZE 32
	98
	99	struct ehea_swqe {
	100	u64 wr_id;
	101	u16 tx_control;
	102	u16 vlan_tag;
	103	u8 reserved1;
	104	u8 ip_start;
	105	u8 ip_end;
	106	u8 immediate_data_length;
	107	u8 tcp_offset;
	108	u8 reserved2;
	109	u16 tcp_end;
	110	u8 wrap_tag;
	111	u8 descriptors; /* number of valid descriptors in WQE */
	112	u16 reserved3;
	113	u16 reserved4;
114	u16 mss;
115	u32 reserved5;
116	union {
117	/* Send WQE Format 1 */
118	struct {
119	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
120	} no_immediate_data;
121
122	/* Send WQE Format 2 */
123	struct {
124	struct ehea_vsgentry sg_entry;
125	/* 0x30 */
126	u8 immediate_data[SWQE2_MAX_IMM];
127	/* 0xd0 */
128	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES-1];
129	} immdata_desc __attribute__ ((packed));
130
131	/* Send WQE Format 3 */
132	struct {
133	u8 immediate_data[SWQE3_MAX_IMM];
134	} immdata_nodesc;
135	} u;
136	};
137
138	struct ehea_rwqe {
139	u64 wr_id; /* work request ID */
140	u8 reserved1[5];
141	u8 data_segments;
142	u16 reserved2;
143	u64 reserved3;
144	u64 reserved4;
145	struct ehea_vsgentry sg_list[EHEA_MAX_WQE_SG_ENTRIES];
146	};
147
148	#define EHEA_CQE_VLAN_TAG_XTRACT 0x0400
149
150	#define EHEA_CQE_TYPE_RQ 0x60
58dd8258 TK	151	#define EHEA_CQE_STAT_ERR_MASK 0x700F
58dd8258 TK	152	#define EHEA_CQE_STAT_FAT_ERR_MASK 0xF
7a291083	153	#define EHEA_CQE_STAT_ERR_TCP 0x4000
acbddb59 JBT	154	#define EHEA_CQE_STAT_ERR_IP 0x2000
acbddb59 JBT	155	#define EHEA_CQE_STAT_ERR_CRC 0x1000
7a291083 JBT	156
	157	struct ehea_cqe {
	158	u64 wr_id; /* work request ID from WQE */
	159	u8 type;
	160	u8 valid;
	161	u16 status;
	162	u16 reserved1;
	163	u16 num_bytes_transfered;
	164	u16 vlan_tag;
	165	u16 inet_checksum_value;
	166	u8 reserved2;
	167	u8 header_length;
	168	u16 reserved3;
	169	u16 page_offset;
	170	u16 wqe_count;
	171	u32 qp_token;
	172	u32 timestamp;
	173	u32 reserved4;
	174	u64 reserved5[3];
	175	};
	176
	177	#define EHEA_EQE_VALID EHEA_BMASK_IBM(0, 0)
	178	#define EHEA_EQE_IS_CQE EHEA_BMASK_IBM(1, 1)
	179	#define EHEA_EQE_IDENTIFIER EHEA_BMASK_IBM(2, 7)
	180	#define EHEA_EQE_QP_CQ_NUMBER EHEA_BMASK_IBM(8, 31)
	181	#define EHEA_EQE_QP_TOKEN EHEA_BMASK_IBM(32, 63)
	182	#define EHEA_EQE_CQ_TOKEN EHEA_BMASK_IBM(32, 63)
	183	#define EHEA_EQE_KEY EHEA_BMASK_IBM(32, 63)
	184	#define EHEA_EQE_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
	185	#define EHEA_EQE_EQ_NUMBER EHEA_BMASK_IBM(48, 63)
	186	#define EHEA_EQE_SM_ID EHEA_BMASK_IBM(48, 63)
	187	#define EHEA_EQE_SM_MECH_NUMBER EHEA_BMASK_IBM(48, 55)
	188	#define EHEA_EQE_SM_PORT_NUMBER EHEA_BMASK_IBM(56, 63)
	189
	190	struct ehea_eqe {
	191	u64 entry;
	192	};
	193
f67c6275 DM	194	#define ERROR_DATA_LENGTH EHEA_BMASK_IBM(52, 63)
f67c6275 DM	195	#define ERROR_DATA_TYPE EHEA_BMASK_IBM(0, 7)
d2db9eea	196
7a291083 JBT	197	static inline void hw_qeit_calc(struct hw_queue queue, u64 q_offset)
	198	{
	199	struct ehea_page *current_page;
	200
	201	if (q_offset >= queue->queue_length)
	202	q_offset -= queue->queue_length;
	203	current_page = (queue->queue_pages)[q_offset >> EHEA_PAGESHIFT];
	204	return &current_page->entries[q_offset & (EHEA_PAGESIZE - 1)];
	205	}
	206
	207	static inline void hw_qeit_get(struct hw_queue queue)
	208	{
	209	return hw_qeit_calc(queue, queue->current_q_offset);
	210	}
	211
	212	static inline void hw_qeit_inc(struct hw_queue *queue)
	213	{
	214	queue->current_q_offset += queue->qe_size;
	215	if (queue->current_q_offset >= queue->queue_length) {
	216	queue->current_q_offset = 0;
	217	/* toggle the valid flag */
	218	queue->toggle_state = (~queue->toggle_state) & 1;
	219	}
	220	}
	221
	222	static inline void hw_qeit_get_inc(struct hw_queue queue)
	223	{
	224	void *retvalue = hw_qeit_get(queue);
	225	hw_qeit_inc(queue);
	226	return retvalue;
	227	}
	228
	229	static inline void hw_qeit_get_inc_valid(struct hw_queue queue)
	230	{
	231	struct ehea_cqe *retvalue = hw_qeit_get(queue);
	232	u8 valid = retvalue->valid;
	233	void *pref;
	234
	235	if ((valid >> 7) == (queue->toggle_state & 1)) {
	236	/* this is a good one */
	237	hw_qeit_inc(queue);
	238	pref = hw_qeit_calc(queue, queue->current_q_offset);
	239	prefetch(pref);
	240	prefetch(pref + 128);
	241	} else
	242	retvalue = NULL;
	243	return retvalue;
	244	}
	245
	246	static inline void hw_qeit_get_valid(struct hw_queue queue)
	247	{
	248	struct ehea_cqe *retvalue = hw_qeit_get(queue);
	249	void *pref;
	250	u8 valid;
	251
	252	pref = hw_qeit_calc(queue, queue->current_q_offset);
	253	prefetch(pref);
	254	prefetch(pref + 128);
	255	prefetch(pref + 256);
	256	valid = retvalue->valid;
	257	if (!((valid >> 7) == (queue->toggle_state & 1)))
	258	retvalue = NULL;
	259	return retvalue;
	260	}
261
262	static inline void hw_qeit_reset(struct hw_queue queue)
263	{
264	queue->current_q_offset = 0;
265	return hw_qeit_get(queue);
266	}
267
268	static inline void hw_qeit_eq_get_inc(struct hw_queue queue)
269	{
270	u64 last_entry_in_q = queue->queue_length - queue->qe_size;
271	void *retvalue;
272
273	retvalue = hw_qeit_get(queue);
274	queue->current_q_offset += queue->qe_size;
275	if (queue->current_q_offset > last_entry_in_q) {
276	queue->current_q_offset = 0;
277	queue->toggle_state = (~queue->toggle_state) & 1;
278	}
279	return retvalue;
280	}
281
282	static inline void hw_eqit_eq_get_inc_valid(struct hw_queue queue)
283	{
284	void *retvalue = hw_qeit_get(queue);
f67c6275	285	u32 qe = (u8 )retvalue;
7a291083 JBT	286	if ((qe >> 7) == (queue->toggle_state & 1))
	287	hw_qeit_eq_get_inc(queue);
	288	else
	289	retvalue = NULL;
	290	return retvalue;
	291	}
	292
	293	static inline struct ehea_rwqe ehea_get_next_rwqe(struct ehea_qp qp,
	294	int rq_nr)
	295	{
	296	struct hw_queue *queue;
	297
	298	if (rq_nr == 1)
	299	queue = &qp->hw_rqueue1;
	300	else if (rq_nr == 2)
	301	queue = &qp->hw_rqueue2;
	302	else
	303	queue = &qp->hw_rqueue3;
	304
	305	return hw_qeit_get_inc(queue);
	306	}
	307
	308	static inline struct ehea_swqe ehea_get_swqe(struct ehea_qp my_qp,
	309	int *wqe_index)
	310	{
	311	struct hw_queue *queue = &my_qp->hw_squeue;
	312	struct ehea_swqe *wqe_p;
	313
	314	*wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_SQ);
	315	wqe_p = hw_qeit_get_inc(&my_qp->hw_squeue);
	316
	317	return wqe_p;
	318	}
	319
	320	static inline void ehea_post_swqe(struct ehea_qp my_qp, struct ehea_swqe swqe)
	321	{
	322	iosync();
	323	ehea_update_sqa(my_qp, 1);
	324	}
	325
	326	static inline struct ehea_cqe ehea_poll_rq1(struct ehea_qp qp, int *wqe_index)
	327	{
	328	struct hw_queue *queue = &qp->hw_rqueue1;
	329
	330	*wqe_index = (queue->current_q_offset) >> (7 + EHEA_SG_RQ1);
	331	return hw_qeit_get_valid(queue);
	332	}
	333
18604c54 JBT	334	static inline void ehea_inc_cq(struct ehea_cq *cq)
	335	{
	336	hw_qeit_inc(&cq->hw_queue);
	337	}
	338
7a291083 JBT	339	static inline void ehea_inc_rq1(struct ehea_qp *qp)
	340	{
	341	hw_qeit_inc(&qp->hw_rqueue1);
	342	}
	343
	344	static inline struct ehea_cqe ehea_poll_cq(struct ehea_cq my_cq)
	345	{
18604c54	346	return hw_qeit_get_valid(&my_cq->hw_queue);
7a291083 JBT	347	}
	348
	349	#define EHEA_CQ_REGISTER_ORIG 0
	350	#define EHEA_EQ_REGISTER_ORIG 0
	351
	352	enum ehea_eq_type {
	353	EHEA_EQ = 0, /* event queue */
	354	EHEA_NEQ /* notification event queue */
	355	};
	356
	357	struct ehea_eq ehea_create_eq(struct ehea_adapter adapter,
	358	enum ehea_eq_type type,
	359	const u32 length, const u8 eqe_gen);
	360
	361	int ehea_destroy_eq(struct ehea_eq *eq);
	362
	363	struct ehea_eqe ehea_poll_eq(struct ehea_eq eq);
	364
	365	struct ehea_cq ehea_create_cq(struct ehea_adapter adapter, int cqe,
	366	u64 eq_handle, u32 cq_token);
	367
	368	int ehea_destroy_cq(struct ehea_cq *cq);
	369
f67c6275	370	struct ehea_qp ehea_create_qp(struct ehea_adapter adapter, u32 pd,
7a291083 JBT	371	struct ehea_qp_init_attr *init_attr);
	372
	373	int ehea_destroy_qp(struct ehea_qp *qp);
	374
e542aa6b JBT	375	int ehea_reg_kernel_mr(struct ehea_adapter adapter, struct ehea_mr mr);
	376
	377	int ehea_gen_smr(struct ehea_adapter adapter, struct ehea_mr old_mr,
	378	struct ehea_mr *shared_mr);
	379
	380	int ehea_rem_mr(struct ehea_mr *mr);
7a291083	381
d2db9eea JBT	382	void ehea_error_data(struct ehea_adapter *adapter, u64 res_handle);
d2db9eea JBT	383
d4f12daf HH	384	int ehea_add_sect_bmap(unsigned long pfn, unsigned long nr_pages);
d4f12daf HH	385	int ehea_rem_sect_bmap(unsigned long pfn, unsigned long nr_pages);
f67c6275 DM	386	int ehea_create_busmap(void);
f67c6275 DM	387	void ehea_destroy_busmap(void);
44c82152 TK	388	u64 ehea_map_vaddr(void *caddr);
44c82152 TK	389
7a291083	390	#endif /* __EHEA_QMR_H__ */