git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| fa90c54f | 2 | * QLogic Fibre Channel HBA Driver |
| 01e58d8e | 3 | * Copyright (c) 2003-2008 QLogic Corporation |
| 1da177e4 | 4 | * |
| fa90c54f | 5 | * See LICENSE.qla2xxx for copyright and licensing details. |
| 1da177e4 LT |
6 | */ |
| 7 | ||
| 1da177e4 LT |
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 | |
| fa2a1ce5 | 19 | qla2x00_debounce_register(volatile uint16_t __iomem *addr) |
| 1da177e4 LT |
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 | ||
| fa2a1ce5 | 34 | static inline void |
| 1da177e4 LT |
35 | qla2x00_poll(scsi_qla_host_t *ha) |
| 36 | { | |
| fd34f556 | 37 | ha->isp_ops->intr_handler(0, ha); |
| 1da177e4 LT |
38 | } |
| 39 | ||
| da4541b6 SJ |
40 | static __inline__ scsi_qla_host_t * |
| 41 | to_qla_parent(scsi_qla_host_t *ha) | |
| 42 | { | |
| 43 | return ha->parent ? ha->parent : ha; | |
| 44 | } | |
| 45 | ||
| 1da177e4 LT |
46 | /** |
| 47 | * qla2x00_issue_marker() - Issue a Marker IOCB if necessary. | |
| 48 | * @ha: HA context | |
| 49 | * @ha_locked: is function called with the hardware lock | |
| 50 | * | |
| 51 | * Returns non-zero if a failure occured, else zero. | |
| 52 | */ | |
| 53 | static inline int | |
| 54 | qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked) | |
| 55 | { | |
| 56 | /* Send marker if required */ | |
| 57 | if (ha->marker_needed != 0) { | |
| 58 | if (ha_locked) { | |
| 59 | if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != | |
| 60 | QLA_SUCCESS) | |
| 61 | return (QLA_FUNCTION_FAILED); | |
| 62 | } else { | |
| 63 | if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != | |
| 64 | QLA_SUCCESS) | |
| 65 | return (QLA_FUNCTION_FAILED); | |
| 66 | } | |
| 67 | ha->marker_needed = 0; | |
| 68 | } | |
| 69 | return (QLA_SUCCESS); | |
| 70 | } | |
| 71 | ||
| 2b6c0cee AV |
72 | static inline uint8_t * |
| 73 | host_to_fcp_swap(uint8_t *fcp, uint32_t bsize) | |
| 74 | { | |
| 75 | uint32_t *ifcp = (uint32_t *) fcp; | |
| 76 | uint32_t *ofcp = (uint32_t *) fcp; | |
| 77 | uint32_t iter = bsize >> 2; | |
| 78 | ||
| 79 | for (; iter ; iter--) | |
| 80 | *ofcp++ = swab32(*ifcp++); | |
| 81 | ||
| 82 | return fcp; | |
| 83 | } | |
| 3d71644c | 84 | |
| 3d71644c AV |
85 | static inline int |
| 86 | qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id) | |
| 87 | { | |
| e428924c | 88 | if (IS_FWI2_CAPABLE(ha)) |
| 3d71644c AV |
89 | return (loop_id > NPH_LAST_HANDLE); |
| 90 | ||
| 91 | return ((loop_id > ha->last_loop_id && loop_id < SNS_FIRST_LOOP_ID) || | |
| 92 | loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST); | |
| 93 | }; |