Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Andrew Vasquez | fa90c54 | 2005-10-27 11:10:08 -0700 | [diff] [blame] | 2 | * QLogic Fibre Channel HBA Driver |
| 3 | * Copyright (c) 2003-2005 QLogic Corporation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Andrew Vasquez | fa90c54 | 2005-10-27 11:10:08 -0700 | [diff] [blame] | 5 | * See LICENSE.qla2xxx for copyright and licensing details. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | */ |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | static __inline__ uint16_t qla2x00_debounce_register(volatile uint16_t __iomem *); |
| 9 | /* |
| 10 | * qla2x00_debounce_register |
| 11 | * Debounce register. |
| 12 | * |
| 13 | * Input: |
| 14 | * port = register address. |
| 15 | * |
| 16 | * Returns: |
| 17 | * register value. |
| 18 | */ |
| 19 | static __inline__ uint16_t |
Andrew Vasquez | fa2a1ce | 2005-07-06 10:32:07 -0700 | [diff] [blame] | 20 | qla2x00_debounce_register(volatile uint16_t __iomem *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | { |
| 22 | volatile uint16_t first; |
| 23 | volatile uint16_t second; |
| 24 | |
| 25 | do { |
| 26 | first = RD_REG_WORD(addr); |
| 27 | barrier(); |
| 28 | cpu_relax(); |
| 29 | second = RD_REG_WORD(addr); |
| 30 | } while (first != second); |
| 31 | |
| 32 | return (first); |
| 33 | } |
| 34 | |
| 35 | static __inline__ int qla2x00_normalize_dma_addr( |
| 36 | dma_addr_t *e_addr, uint32_t *e_len, |
| 37 | dma_addr_t *ne_addr, uint32_t *ne_len); |
| 38 | |
| 39 | /** |
| 40 | * qla2x00_normalize_dma_addr() - Normalize an DMA address. |
| 41 | * @e_addr: Raw DMA address |
| 42 | * @e_len: Raw DMA length |
| 43 | * @ne_addr: Normalized second DMA address |
| 44 | * @ne_len: Normalized second DMA length |
| 45 | * |
| 46 | * If the address does not span a 4GB page boundary, the contents of @ne_addr |
| 47 | * and @ne_len are undefined. @e_len is updated to reflect a normalization. |
| 48 | * |
| 49 | * Example: |
| 50 | * |
| 51 | * ffffabc0ffffeeee (e_addr) start of DMA address |
| 52 | * 0000000020000000 (e_len) length of DMA transfer |
| 53 | * ffffabc11fffeeed end of DMA transfer |
| 54 | * |
| 55 | * Is the 4GB boundary crossed? |
| 56 | * |
| 57 | * ffffabc0ffffeeee (e_addr) |
| 58 | * ffffabc11fffeeed (e_addr + e_len - 1) |
| 59 | * 00000001e0000003 ((e_addr ^ (e_addr + e_len - 1)) |
| 60 | * 0000000100000000 ((e_addr ^ (e_addr + e_len - 1)) & ~(0xffffffff) |
| 61 | * |
| 62 | * Compute start of second DMA segment: |
| 63 | * |
| 64 | * ffffabc0ffffeeee (e_addr) |
| 65 | * ffffabc1ffffeeee (0x100000000 + e_addr) |
| 66 | * ffffabc100000000 (0x100000000 + e_addr) & ~(0xffffffff) |
| 67 | * ffffabc100000000 (ne_addr) |
Andrew Vasquez | fa2a1ce | 2005-07-06 10:32:07 -0700 | [diff] [blame] | 68 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | * Compute length of second DMA segment: |
| 70 | * |
| 71 | * 00000000ffffeeee (e_addr & 0xffffffff) |
| 72 | * 0000000000001112 (0x100000000 - (e_addr & 0xffffffff)) |
| 73 | * 000000001fffeeee (e_len - (0x100000000 - (e_addr & 0xffffffff)) |
| 74 | * 000000001fffeeee (ne_len) |
| 75 | * |
| 76 | * Adjust length of first DMA segment |
| 77 | * |
| 78 | * 0000000020000000 (e_len) |
| 79 | * 0000000000001112 (e_len - ne_len) |
| 80 | * 0000000000001112 (e_len) |
| 81 | * |
| 82 | * Returns non-zero if the specified address was normalized, else zero. |
| 83 | */ |
| 84 | static __inline__ int |
| 85 | qla2x00_normalize_dma_addr( |
| 86 | dma_addr_t *e_addr, uint32_t *e_len, |
| 87 | dma_addr_t *ne_addr, uint32_t *ne_len) |
| 88 | { |
| 89 | int normalized; |
| 90 | |
| 91 | normalized = 0; |
| 92 | if ((*e_addr ^ (*e_addr + *e_len - 1)) & ~(0xFFFFFFFFULL)) { |
| 93 | /* Compute normalized crossed address and len */ |
| 94 | *ne_addr = (0x100000000ULL + *e_addr) & ~(0xFFFFFFFFULL); |
| 95 | *ne_len = *e_len - (0x100000000ULL - (*e_addr & 0xFFFFFFFFULL)); |
| 96 | *e_len -= *ne_len; |
| 97 | |
| 98 | normalized++; |
| 99 | } |
| 100 | return (normalized); |
| 101 | } |
| 102 | |
| 103 | static __inline__ void qla2x00_poll(scsi_qla_host_t *); |
Andrew Vasquez | fa2a1ce | 2005-07-06 10:32:07 -0700 | [diff] [blame] | 104 | static inline void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | qla2x00_poll(scsi_qla_host_t *ha) |
| 106 | { |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 107 | ha->isp_ops.intr_handler(0, ha); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *); |
| 111 | /* |
| 112 | * This routine will wait for fabric devices for |
| 113 | * the reset delay. |
| 114 | */ |
Andrew Vasquez | fa2a1ce | 2005-07-06 10:32:07 -0700 | [diff] [blame] | 115 | static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *ha) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | { |
| 117 | uint16_t fw_state; |
| 118 | |
| 119 | qla2x00_get_firmware_state(ha, &fw_state); |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * qla2x00_issue_marker() - Issue a Marker IOCB if necessary. |
| 124 | * @ha: HA context |
| 125 | * @ha_locked: is function called with the hardware lock |
| 126 | * |
| 127 | * Returns non-zero if a failure occured, else zero. |
| 128 | */ |
| 129 | static inline int |
| 130 | qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked) |
| 131 | { |
| 132 | /* Send marker if required */ |
| 133 | if (ha->marker_needed != 0) { |
| 134 | if (ha_locked) { |
| 135 | if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != |
| 136 | QLA_SUCCESS) |
| 137 | return (QLA_FUNCTION_FAILED); |
| 138 | } else { |
| 139 | if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != |
| 140 | QLA_SUCCESS) |
| 141 | return (QLA_FUNCTION_FAILED); |
| 142 | } |
| 143 | ha->marker_needed = 0; |
| 144 | } |
| 145 | return (QLA_SUCCESS); |
| 146 | } |
| 147 | |
Andrew Vasquez | 2b6c0ce | 2005-07-06 10:31:17 -0700 | [diff] [blame] | 148 | static inline uint8_t *host_to_fcp_swap(uint8_t *, uint32_t); |
| 149 | static inline uint8_t * |
| 150 | host_to_fcp_swap(uint8_t *fcp, uint32_t bsize) |
| 151 | { |
| 152 | uint32_t *ifcp = (uint32_t *) fcp; |
| 153 | uint32_t *ofcp = (uint32_t *) fcp; |
| 154 | uint32_t iter = bsize >> 2; |
| 155 | |
| 156 | for (; iter ; iter--) |
| 157 | *ofcp++ = swab32(*ifcp++); |
| 158 | |
| 159 | return fcp; |
| 160 | } |
Andrew Vasquez | 3d71644 | 2005-07-06 10:30:26 -0700 | [diff] [blame] | 161 | |
| 162 | static inline int qla2x00_is_reserved_id(scsi_qla_host_t *, uint16_t); |
| 163 | static inline int |
| 164 | qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id) |
| 165 | { |
andrew.vasquez@qlogic.com | 044cc6c | 2006-03-09 14:27:13 -0800 | [diff] [blame] | 166 | if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) |
Andrew Vasquez | 3d71644 | 2005-07-06 10:30:26 -0700 | [diff] [blame] | 167 | return (loop_id > NPH_LAST_HANDLE); |
| 168 | |
| 169 | return ((loop_id > ha->last_loop_id && loop_id < SNS_FIRST_LOOP_ID) || |
| 170 | loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST); |
| 171 | }; |