summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qla2xxx/qla_inline.h
blob: 1fb6ccac07ccd152e3bfcf0d5e0dc6442ae58177 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/*
 * QLogic Fibre Channel HBA Driver
 * Copyright (c)  2003-2014 QLogic Corporation
 *
 * See LICENSE.qla2xxx for copyright and licensing details.
 */

#include "qla_target.h"
/**
 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and
 * Continuation Type 1 IOCBs to allocate.
 *
 * @vha: HA context
 * @dsds: number of data segment decriptors needed
 *
 * Returns the number of IOCB entries needed to store @dsds.
 */
static inline uint16_t
qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds)
{
	uint16_t iocbs;

	iocbs = 1;
	if (dsds > 1) {
		iocbs += (dsds - 1) / 5;
		if ((dsds - 1) % 5)
			iocbs++;
	}
	return iocbs;
}

/*
 * qla2x00_debounce_register
 *      Debounce register.
 *
 * Input:
 *      port = register address.
 *
 * Returns:
 *      register value.
 */
static __inline__ uint16_t
qla2x00_debounce_register(volatile __le16 __iomem *addr)
{
	volatile uint16_t first;
	volatile uint16_t second;

	do {
		first = rd_reg_word(addr);
		barrier();
		cpu_relax();
		second = rd_reg_word(addr);
	} while (first != second);

	return (first);
}

static inline void
qla2x00_poll(struct rsp_que *rsp)
{
	struct qla_hw_data *ha = rsp->hw;

	if (IS_P3P_TYPE(ha))
		qla82xx_poll(0, rsp);
	else
		ha->isp_ops->intr_handler(0, rsp);
}

static inline uint8_t *
host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
{
       uint32_t *ifcp = (uint32_t *) fcp;
       uint32_t *ofcp = (uint32_t *) fcp;
       uint32_t iter = bsize >> 2;

       for (; iter ; iter--)
               *ofcp++ = swab32(*ifcp++);

       return fcp;
}

static inline void
host_to_adap(uint8_t *src, uint8_t *dst, uint32_t bsize)
{
	uint32_t *isrc = (uint32_t *) src;
	__le32 *odest = (__le32 *) dst;
	uint32_t iter = bsize >> 2;

	for ( ; iter--; isrc++)
		*odest++ = cpu_to_le32(*isrc);
}

static inline void
qla2x00_clean_dsd_pool(struct qla_hw_data *ha, struct crc_context *ctx)
{
	struct dsd_dma *dsd, *tdsd;

	/* clean up allocated prev pool */
	list_for_each_entry_safe(dsd, tdsd, &ctx->dsd_list, list) {
		dma_pool_free(ha->dl_dma_pool, dsd->dsd_addr,
		    dsd->dsd_list_dma);
		list_del(&dsd->list);
		kfree(dsd);
	}
	INIT_LIST_HEAD(&ctx->dsd_list);
}

static inline void
qla2x00_set_fcport_disc_state(fc_port_t *fcport, int state)
{
	int old_val;
	uint8_t shiftbits, mask;

	/* This will have to change when the max no. of states > 16 */
	shiftbits = 4;
	mask = (1 << shiftbits) - 1;

	fcport->disc_state = state;
	while (1) {
		old_val = atomic_read(&fcport->shadow_disc_state);
		if (old_val == atomic_cmpxchg(&fcport->shadow_disc_state,
		    old_val, (old_val << shiftbits) | state)) {
			ql_dbg(ql_dbg_disc, fcport->vha, 0x2134,
			    "FCPort %8phC disc_state transition: %s to %s - portid=%06x.\n",
			    fcport->port_name, port_dstate_str[old_val & mask],
			    port_dstate_str[state], fcport->d_id.b24);
			return;
		}
	}
}

static inline int
qla2x00_hba_err_chk_enabled(srb_t *sp)
{
	/*
	 * Uncomment when corresponding SCSI changes are done.
	 *
	if (!sp->cmd->prot_chk)
		return 0;
	 *
	 */
	switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
	case SCSI_PROT_READ_STRIP:
	case SCSI_PROT_WRITE_INSERT:
		if (ql2xenablehba_err_chk >= 1)
			return 1;
		break;
	case SCSI_PROT_READ_PASS:
	case SCSI_PROT_WRITE_PASS:
		if (ql2xenablehba_err_chk >= 2)
			return 1;
		break;
	case SCSI_PROT_READ_INSERT:
	case SCSI_PROT_WRITE_STRIP:
		return 1;
	}
	return 0;
}

static inline int
qla2x00_reset_active(scsi_qla_host_t *vha)
{
	scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);

	/* Test appropriate base-vha and vha flags. */
	return test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) ||
	    test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
	    test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
	    test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
	    test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
}

static inline int
qla2x00_chip_is_down(scsi_qla_host_t *vha)
{
	return (qla2x00_reset_active(vha) || !vha->hw->flags.fw_started);
}

static void qla2xxx_init_sp(srb_t *sp, scsi_qla_host_t *vha,
			    struct qla_qpair *qpair, fc_port_t *fcport)
{
	memset(sp, 0, sizeof(*sp));
	sp->fcport = fcport;
	sp->iocbs = 1;
	sp->vha = vha;
	sp->qpair = qpair;
	sp->cmd_type = TYPE_SRB;
	INIT_LIST_HEAD(&sp->elem);
}

static inline srb_t *
qla2xxx_get_qpair_sp(scsi_qla_host_t *vha, struct qla_qpair *qpair,
    fc_port_t *fcport, gfp_t flag)
{
	srb_t *sp = NULL;
	uint8_t bail;

	QLA_QPAIR_MARK_BUSY(qpair, bail);
	if (unlikely(bail))
		return NULL;

	sp = mempool_alloc(qpair->srb_mempool, flag);
	if (sp)
		qla2xxx_init_sp(sp, vha, qpair, fcport);
	else
		QLA_QPAIR_MARK_NOT_BUSY(qpair);
	return sp;
}

static inline void
qla2xxx_rel_qpair_sp(struct qla_qpair *qpair, srb_t *sp)
{
	sp->qpair = NULL;
	mempool_free(sp, qpair->srb_mempool);
	QLA_QPAIR_MARK_NOT_BUSY(qpair);
}

static inline srb_t *
qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
{
	srb_t *sp = NULL;
	uint8_t bail;
	struct qla_qpair *qpair;

	QLA_VHA_MARK_BUSY(vha, bail);
	if (unlikely(bail))
		return NULL;

	qpair = vha->hw->base_qpair;
	sp = qla2xxx_get_qpair_sp(vha, qpair, fcport, flag);
	if (!sp)
		goto done;

	sp->vha = vha;
done:
	if (!sp)
		QLA_VHA_MARK_NOT_BUSY(vha);
	return sp;
}

static inline void
qla2x00_rel_sp(srb_t *sp)
{
	QLA_VHA_MARK_NOT_BUSY(sp->vha);
	qla2xxx_rel_qpair_sp(sp->qpair, sp);
}

static inline int
qla2x00_gid_list_size(struct qla_hw_data *ha)
{
	if (IS_QLAFX00(ha))
		return sizeof(uint32_t) * 32;
	else
		return sizeof(struct gid_list_info) * ha->max_fibre_devices;
}

static inline void
qla2x00_handle_mbx_completion(struct qla_hw_data *ha, int status)
{
	if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
	    (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
		set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
		clear_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags);
		complete(&ha->mbx_intr_comp);
	}
}

static inline void
qla2x00_set_retry_delay_timestamp(fc_port_t *fcport, uint16_t retry_delay)
{
	if (retry_delay)
		fcport->retry_delay_timestamp = jiffies +
		    (retry_delay * HZ / 10);
}

static inline bool
qla_is_exch_offld_enabled(struct scsi_qla_host *vha)
{
	if (qla_ini_mode_enabled(vha) &&
	    (vha->ql2xiniexchg > FW_DEF_EXCHANGES_CNT))
		return true;
	else if (qla_tgt_mode_enabled(vha) &&
	    (vha->ql2xexchoffld > FW_DEF_EXCHANGES_CNT))
		return true;
	else if (qla_dual_mode_enabled(vha) &&
	    ((vha->ql2xiniexchg + vha->ql2xexchoffld) > FW_DEF_EXCHANGES_CNT))
		return true;
	else
		return false;
}

static inline void
qla_cpu_update(struct qla_qpair *qpair, uint16_t cpuid)
{
	qpair->cpuid = cpuid;

	if (!list_empty(&qpair->hints_list)) {
		struct qla_qpair_hint *h;

		list_for_each_entry(h, &qpair->hints_list, hint_elem)
			h->cpuid = qpair->cpuid;
	}
}

static inline struct qla_qpair_hint *
qla_qpair_to_hint(struct qla_tgt *tgt, struct qla_qpair *qpair)
{
	struct qla_qpair_hint *h;
	u16 i;

	for (i = 0; i < tgt->ha->max_qpairs + 1; i++) {
		h = &tgt->qphints[i];
		if (h->qpair == qpair)
			return h;
	}

	return NULL;
}

static inline void
qla_83xx_start_iocbs(struct qla_qpair *qpair)
{
	struct req_que *req = qpair->req;

	req->ring_index++;
	if (req->ring_index == req->length) {
		req->ring_index = 0;
		req->ring_ptr = req->ring;
	} else
		req->ring_ptr++;

	wrt_reg_dword(req->req_q_in, req->ring_index);
}

static inline int
qla2xxx_get_fc4_priority(struct scsi_qla_host *vha)
{
	uint32_t data;

	data =
	    ((uint8_t *)vha->hw->nvram)[NVRAM_DUAL_FCP_NVME_FLAG_OFFSET];


	return (data >> 6) & BIT_0 ? FC4_PRIORITY_FCP : FC4_PRIORITY_NVME;
}