2 * QLOGIC LINUX SOFTWARE
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2004 QLogic Corporation
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
21 static __inline__ uint16_t qla2x00_debounce_register(volatile uint16_t __iomem *);
23 * qla2x00_debounce_register
27 * port = register address.
32 static __inline__ uint16_t
33 qla2x00_debounce_register(volatile uint16_t __iomem *addr)
35 volatile uint16_t first;
36 volatile uint16_t second;
39 first = RD_REG_WORD(addr);
42 second = RD_REG_WORD(addr);
43 } while (first != second);
48 static __inline__ int qla2x00_normalize_dma_addr(
49 dma_addr_t *e_addr, uint32_t *e_len,
50 dma_addr_t *ne_addr, uint32_t *ne_len);
53 * qla2x00_normalize_dma_addr() - Normalize an DMA address.
54 * @e_addr: Raw DMA address
55 * @e_len: Raw DMA length
56 * @ne_addr: Normalized second DMA address
57 * @ne_len: Normalized second DMA length
59 * If the address does not span a 4GB page boundary, the contents of @ne_addr
60 * and @ne_len are undefined. @e_len is updated to reflect a normalization.
64 * ffffabc0ffffeeee (e_addr) start of DMA address
65 * 0000000020000000 (e_len) length of DMA transfer
66 * ffffabc11fffeeed end of DMA transfer
68 * Is the 4GB boundary crossed?
70 * ffffabc0ffffeeee (e_addr)
71 * ffffabc11fffeeed (e_addr + e_len - 1)
72 * 00000001e0000003 ((e_addr ^ (e_addr + e_len - 1))
73 * 0000000100000000 ((e_addr ^ (e_addr + e_len - 1)) & ~(0xffffffff)
75 * Compute start of second DMA segment:
77 * ffffabc0ffffeeee (e_addr)
78 * ffffabc1ffffeeee (0x100000000 + e_addr)
79 * ffffabc100000000 (0x100000000 + e_addr) & ~(0xffffffff)
80 * ffffabc100000000 (ne_addr)
82 * Compute length of second DMA segment:
84 * 00000000ffffeeee (e_addr & 0xffffffff)
85 * 0000000000001112 (0x100000000 - (e_addr & 0xffffffff))
86 * 000000001fffeeee (e_len - (0x100000000 - (e_addr & 0xffffffff))
87 * 000000001fffeeee (ne_len)
89 * Adjust length of first DMA segment
91 * 0000000020000000 (e_len)
92 * 0000000000001112 (e_len - ne_len)
93 * 0000000000001112 (e_len)
95 * Returns non-zero if the specified address was normalized, else zero.
98 qla2x00_normalize_dma_addr(
99 dma_addr_t *e_addr, uint32_t *e_len,
100 dma_addr_t *ne_addr, uint32_t *ne_len)
105 if ((*e_addr ^ (*e_addr + *e_len - 1)) & ~(0xFFFFFFFFULL)) {
106 /* Compute normalized crossed address and len */
107 *ne_addr = (0x100000000ULL + *e_addr) & ~(0xFFFFFFFFULL);
108 *ne_len = *e_len - (0x100000000ULL - (*e_addr & 0xFFFFFFFFULL));
116 static __inline__ void qla2x00_poll(scsi_qla_host_t *);
118 qla2x00_poll(scsi_qla_host_t *ha)
120 ha->isp_ops.intr_handler(0, ha, NULL);
123 static __inline__ int qla2x00_is_wwn_zero(uint8_t *);
126 * qla2x00_is_wwn_zero - Check for zero node name
129 * wwn = Pointer to WW name to check
132 * 1 if name is 0x00 else 0
137 static __inline__ int
138 qla2x00_is_wwn_zero(uint8_t *wwn)
142 for (cnt = 0; cnt < WWN_SIZE ; cnt++, wwn++) {
146 /* if zero return 1 */
153 static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *);
155 * This routine will wait for fabric devices for
158 static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *ha)
162 qla2x00_get_firmware_state(ha, &fw_state);
166 * qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
168 * @ha_locked: is function called with the hardware lock
170 * Returns non-zero if a failure occured, else zero.
173 qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked)
175 /* Send marker if required */
176 if (ha->marker_needed != 0) {
178 if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
180 return (QLA_FUNCTION_FAILED);
182 if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
184 return (QLA_FUNCTION_FAILED);
186 ha->marker_needed = 0;
188 return (QLA_SUCCESS);
191 static __inline__ void qla2x00_add_timer_to_cmd(srb_t *, int);
192 static __inline__ void qla2x00_delete_timer_from_cmd(srb_t *);
194 /**************************************************************************
195 * qla2x00_add_timer_to_cmd
198 * Creates a timer for the specified command. The timeout is usually
199 * the command time from kernel minus 2 secs.
202 * sp - pointer to validate
206 **************************************************************************/
208 qla2x00_add_timer_to_cmd(srb_t *sp, int timeout)
210 init_timer(&sp->timer);
211 sp->timer.expires = jiffies + timeout * HZ;
212 sp->timer.data = (unsigned long) sp;
213 sp->timer.function = (void (*) (unsigned long))qla2x00_cmd_timeout;
214 add_timer(&sp->timer);
217 /**************************************************************************
218 * qla2x00_delete_timer_from_cmd
221 * Delete the timer for the specified command.
224 * sp - pointer to validate
228 **************************************************************************/
230 qla2x00_delete_timer_from_cmd(srb_t *sp)
232 if (sp->timer.function != NULL) {
233 del_timer(&sp->timer);
234 sp->timer.function = NULL;
235 sp->timer.data = (unsigned long) NULL;
239 static inline uint8_t *host_to_fcp_swap(uint8_t *, uint32_t);
240 static inline uint8_t *
241 host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
243 uint32_t *ifcp = (uint32_t *) fcp;
244 uint32_t *ofcp = (uint32_t *) fcp;
245 uint32_t iter = bsize >> 2;
247 for (; iter ; iter--)
248 *ofcp++ = swab32(*ifcp++);
253 static inline int qla2x00_is_reserved_id(scsi_qla_host_t *, uint16_t);
255 qla2x00_is_reserved_id(scsi_qla_host_t *ha, uint16_t loop_id)
257 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
258 return (loop_id > NPH_LAST_HANDLE);
260 return ((loop_id > ha->last_loop_id && loop_id < SNS_FIRST_LOOP_ID) ||
261 loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST);