| | 1 | /* |
| | 2 | * QLogic Fibre Channel HBA Driver |
| | 3 | * Copyright (c) 2003-2008 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 | ha->isp_ops->intr_handler(0, rsp); |
| | 41 | local_irq_restore(flags); |
| | 42 | } |
| | 43 | |
| | 44 | /** |
| | 45 | * qla2x00_issue_marker() - Issue a Marker IOCB if necessary. |
| | 46 | * @ha: HA context |
| | 47 | * @ha_locked: is function called with the hardware lock |
| | 48 | * |
| | 49 | * Returns non-zero if a failure occurred, else zero. |
| | 50 | */ |
| | 51 | static inline int |
| | 52 | qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked) |
| | 53 | { |
| | 54 | /* Send marker if required */ |
| | 55 | if (vha->marker_needed != 0) { |
| | 56 | if (ha_locked) { |
| | 57 | if (__qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) != |
| | 58 | QLA_SUCCESS) |
| | 59 | return (QLA_FUNCTION_FAILED); |
| | 60 | } else { |
| | 61 | if (qla2x00_marker(vha, 0, 0, MK_SYNC_ALL) != |
| | 62 | QLA_SUCCESS) |
| | 63 | return (QLA_FUNCTION_FAILED); |
| | 64 | } |
| | 65 | vha->marker_needed = 0; |
| | 66 | } |
| | 67 | return (QLA_SUCCESS); |
| | 68 | } |
| | 69 | |
| | 70 | static inline uint8_t * |
| | 71 | host_to_fcp_swap(uint8_t *fcp, uint32_t bsize) |
| | 72 | { |
| | 73 | uint32_t *ifcp = (uint32_t *) fcp; |
| | 74 | uint32_t *ofcp = (uint32_t *) fcp; |
| | 75 | uint32_t iter = bsize >> 2; |
| | 76 | |
| | 77 | for (; iter ; iter--) |
| | 78 | *ofcp++ = swab32(*ifcp++); |
| | 79 | |
| | 80 | return fcp; |
| | 81 | } |
| | 82 | |
| | 83 | static inline int |
| | 84 | qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id) |
| | 85 | { |
| | 86 | struct qla_hw_data *ha = vha->hw; |
| | 87 | if (IS_FWI2_CAPABLE(ha)) |
| | 88 | return (loop_id > NPH_LAST_HANDLE); |
| | 89 | |
| | 90 | return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) || |
| | 91 | loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST); |
| | 92 | }; |
git://bbs.cooldavid.org / net-next-2.6.git / blame_incremental