]> git.kernelconcepts.de Git - karo-tx-linux.git/blob - drivers/scsi/qla2xxx/qla_inline.h
Merge tag 'v3.7-rc3' into next to sync up with recent USB and MFD changes
[karo-tx-linux.git] / drivers / scsi / qla2xxx / qla_inline.h
1 /*
2  * QLogic Fibre Channel HBA Driver
3  * Copyright (c)  2003-2012 QLogic Corporation
4  *
5  * See LICENSE.qla2xxx for copyright and licensing details.
6  */
7
8 /*
9  * qla2x00_debounce_register
10  *      Debounce register.
11  *
12  * Input:
13  *      port = register address.
14  *
15  * Returns:
16  *      register value.
17  */
18 static __inline__ uint16_t
19 qla2x00_debounce_register(volatile uint16_t __iomem *addr)
20 {
21         volatile uint16_t first;
22         volatile uint16_t second;
23
24         do {
25                 first = RD_REG_WORD(addr);
26                 barrier();
27                 cpu_relax();
28                 second = RD_REG_WORD(addr);
29         } while (first != second);
30
31         return (first);
32 }
33
34 static inline void
35 qla2x00_poll(struct rsp_que *rsp)
36 {
37         unsigned long flags;
38         struct qla_hw_data *ha = rsp->hw;
39         local_irq_save(flags);
40         if (IS_QLA82XX(ha))
41                 qla82xx_poll(0, rsp);
42         else
43                 ha->isp_ops->intr_handler(0, rsp);
44         local_irq_restore(flags);
45 }
46
47 static inline uint8_t *
48 host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
49 {
50        uint32_t *ifcp = (uint32_t *) fcp;
51        uint32_t *ofcp = (uint32_t *) fcp;
52        uint32_t iter = bsize >> 2;
53
54        for (; iter ; iter--)
55                *ofcp++ = swab32(*ifcp++);
56
57        return fcp;
58 }
59
60 static inline void
61 qla2x00_set_reserved_loop_ids(struct qla_hw_data *ha)
62 {
63         int i;
64
65         if (IS_FWI2_CAPABLE(ha))
66                 return;
67
68         for (i = 0; i < SNS_FIRST_LOOP_ID; i++)
69                 set_bit(i, ha->loop_id_map);
70         set_bit(MANAGEMENT_SERVER, ha->loop_id_map);
71         set_bit(BROADCAST, ha->loop_id_map);
72 }
73
74 static inline int
75 qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id)
76 {
77         struct qla_hw_data *ha = vha->hw;
78         if (IS_FWI2_CAPABLE(ha))
79                 return (loop_id > NPH_LAST_HANDLE);
80
81         return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
82             loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);
83 }
84
85 static inline void
86 qla2x00_clear_loop_id(fc_port_t *fcport) {
87         struct qla_hw_data *ha = fcport->vha->hw;
88
89         if (fcport->loop_id == FC_NO_LOOP_ID ||
90             qla2x00_is_reserved_id(fcport->vha, fcport->loop_id))
91                 return;
92
93         clear_bit(fcport->loop_id, ha->loop_id_map);
94         fcport->loop_id = FC_NO_LOOP_ID;
95 }
96
97 static inline void
98 qla2x00_clean_dsd_pool(struct qla_hw_data *ha, srb_t *sp)
99 {
100         struct dsd_dma *dsd_ptr, *tdsd_ptr;
101         struct crc_context *ctx;
102
103         ctx = (struct crc_context *)GET_CMD_CTX_SP(sp);
104
105         /* clean up allocated prev pool */
106         list_for_each_entry_safe(dsd_ptr, tdsd_ptr,
107             &ctx->dsd_list, list) {
108                 dma_pool_free(ha->dl_dma_pool, dsd_ptr->dsd_addr,
109                     dsd_ptr->dsd_list_dma);
110                 list_del(&dsd_ptr->list);
111                 kfree(dsd_ptr);
112         }
113         INIT_LIST_HEAD(&ctx->dsd_list);
114 }
115
116 static inline void
117 qla2x00_set_fcport_state(fc_port_t *fcport, int state)
118 {
119         int old_state;
120
121         old_state = atomic_read(&fcport->state);
122         atomic_set(&fcport->state, state);
123
124         /* Don't print state transitions during initial allocation of fcport */
125         if (old_state && old_state != state) {
126                 ql_dbg(ql_dbg_disc, fcport->vha, 0x207d,
127                     "FCPort state transitioned from %s to %s - "
128                     "portid=%02x%02x%02x.\n",
129                     port_state_str[old_state], port_state_str[state],
130                     fcport->d_id.b.domain, fcport->d_id.b.area,
131                     fcport->d_id.b.al_pa);
132         }
133 }
134
135 static inline int
136 qla2x00_hba_err_chk_enabled(srb_t *sp)
137 {
138         /*
139          * Uncomment when corresponding SCSI changes are done.
140          *
141         if (!sp->cmd->prot_chk)
142                 return 0;
143          *
144          */
145         switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
146         case SCSI_PROT_READ_STRIP:
147         case SCSI_PROT_WRITE_INSERT:
148                 if (ql2xenablehba_err_chk >= 1)
149                         return 1;
150                 break;
151         case SCSI_PROT_READ_PASS:
152         case SCSI_PROT_WRITE_PASS:
153                 if (ql2xenablehba_err_chk >= 2)
154                         return 1;
155                 break;
156         case SCSI_PROT_READ_INSERT:
157         case SCSI_PROT_WRITE_STRIP:
158                 return 1;
159         }
160         return 0;
161 }
162
163 static inline int
164 qla2x00_reset_active(scsi_qla_host_t *vha)
165 {
166         scsi_qla_host_t *base_vha = pci_get_drvdata(vha->hw->pdev);
167
168         /* Test appropriate base-vha and vha flags. */
169         return test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) ||
170             test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
171             test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
172             test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
173             test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags);
174 }
175
176 static inline srb_t *
177 qla2x00_get_sp(scsi_qla_host_t *vha, fc_port_t *fcport, gfp_t flag)
178 {
179         srb_t *sp = NULL;
180         struct qla_hw_data *ha = vha->hw;
181         uint8_t bail;
182
183         QLA_VHA_MARK_BUSY(vha, bail);
184         if (unlikely(bail))
185                 return NULL;
186
187         sp = mempool_alloc(ha->srb_mempool, flag);
188         if (!sp)
189                 goto done;
190
191         memset(sp, 0, sizeof(*sp));
192         sp->fcport = fcport;
193         sp->iocbs = 1;
194 done:
195         if (!sp)
196                 QLA_VHA_MARK_NOT_BUSY(vha);
197         return sp;
198 }
199
200 static inline void
201 qla2x00_init_timer(srb_t *sp, unsigned long tmo)
202 {
203         init_timer(&sp->u.iocb_cmd.timer);
204         sp->u.iocb_cmd.timer.expires = jiffies + tmo * HZ;
205         sp->u.iocb_cmd.timer.data = (unsigned long)sp;
206         sp->u.iocb_cmd.timer.function = qla2x00_sp_timeout;
207         add_timer(&sp->u.iocb_cmd.timer);
208         sp->free = qla2x00_sp_free;
209 }
210
211 static inline int
212 qla2x00_gid_list_size(struct qla_hw_data *ha)
213 {
214         return sizeof(struct gid_list_info) * ha->max_fibre_devices;
215 }