bdf796210e
Remove internal lun discovery routines and support structures. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
276 lines
6.9 KiB
C
276 lines
6.9 KiB
C
/*
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* QLOGIC LINUX SOFTWARE
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*
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* QLogic ISP2x00 device driver for Linux 2.6.x
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* Copyright (C) 2003-2004 QLogic Corporation
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* (www.qlogic.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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*/
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static __inline__ uint16_t qla2x00_debounce_register(volatile uint16_t __iomem *);
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/*
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* qla2x00_debounce_register
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* Debounce register.
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*
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* Input:
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* port = register address.
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*
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* Returns:
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* register value.
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*/
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static __inline__ uint16_t
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qla2x00_debounce_register(volatile uint16_t __iomem *addr)
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{
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volatile uint16_t first;
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volatile uint16_t second;
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do {
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first = RD_REG_WORD(addr);
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barrier();
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cpu_relax();
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second = RD_REG_WORD(addr);
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} while (first != second);
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return (first);
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}
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static __inline__ int qla2x00_normalize_dma_addr(
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dma_addr_t *e_addr, uint32_t *e_len,
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dma_addr_t *ne_addr, uint32_t *ne_len);
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/**
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* qla2x00_normalize_dma_addr() - Normalize an DMA address.
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* @e_addr: Raw DMA address
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* @e_len: Raw DMA length
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* @ne_addr: Normalized second DMA address
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* @ne_len: Normalized second DMA length
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*
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* If the address does not span a 4GB page boundary, the contents of @ne_addr
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* and @ne_len are undefined. @e_len is updated to reflect a normalization.
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*
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* Example:
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*
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* ffffabc0ffffeeee (e_addr) start of DMA address
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* 0000000020000000 (e_len) length of DMA transfer
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* ffffabc11fffeeed end of DMA transfer
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*
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* Is the 4GB boundary crossed?
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*
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* ffffabc0ffffeeee (e_addr)
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* ffffabc11fffeeed (e_addr + e_len - 1)
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* 00000001e0000003 ((e_addr ^ (e_addr + e_len - 1))
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* 0000000100000000 ((e_addr ^ (e_addr + e_len - 1)) & ~(0xffffffff)
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*
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* Compute start of second DMA segment:
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*
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* ffffabc0ffffeeee (e_addr)
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* ffffabc1ffffeeee (0x100000000 + e_addr)
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* ffffabc100000000 (0x100000000 + e_addr) & ~(0xffffffff)
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* ffffabc100000000 (ne_addr)
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*
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* Compute length of second DMA segment:
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*
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* 00000000ffffeeee (e_addr & 0xffffffff)
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* 0000000000001112 (0x100000000 - (e_addr & 0xffffffff))
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* 000000001fffeeee (e_len - (0x100000000 - (e_addr & 0xffffffff))
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* 000000001fffeeee (ne_len)
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*
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* Adjust length of first DMA segment
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*
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* 0000000020000000 (e_len)
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* 0000000000001112 (e_len - ne_len)
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* 0000000000001112 (e_len)
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*
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* Returns non-zero if the specified address was normalized, else zero.
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*/
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static __inline__ int
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qla2x00_normalize_dma_addr(
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dma_addr_t *e_addr, uint32_t *e_len,
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dma_addr_t *ne_addr, uint32_t *ne_len)
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{
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int normalized;
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normalized = 0;
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if ((*e_addr ^ (*e_addr + *e_len - 1)) & ~(0xFFFFFFFFULL)) {
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/* Compute normalized crossed address and len */
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*ne_addr = (0x100000000ULL + *e_addr) & ~(0xFFFFFFFFULL);
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*ne_len = *e_len - (0x100000000ULL - (*e_addr & 0xFFFFFFFFULL));
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*e_len -= *ne_len;
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normalized++;
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}
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return (normalized);
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}
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static __inline__ void qla2x00_poll(scsi_qla_host_t *);
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static inline void
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qla2x00_poll(scsi_qla_host_t *ha)
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{
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if (IS_QLA2100(ha) || IS_QLA2200(ha))
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qla2100_intr_handler(0, ha, NULL);
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else
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qla2300_intr_handler(0, ha, NULL);
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}
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static __inline__ void qla2x00_enable_intrs(scsi_qla_host_t *);
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static __inline__ void qla2x00_disable_intrs(scsi_qla_host_t *);
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static inline void
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qla2x00_enable_intrs(scsi_qla_host_t *ha)
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{
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unsigned long flags = 0;
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device_reg_t __iomem *reg = ha->iobase;
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spin_lock_irqsave(&ha->hardware_lock, flags);
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ha->interrupts_on = 1;
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/* enable risc and host interrupts */
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WRT_REG_WORD(®->ictrl, ICR_EN_INT | ICR_EN_RISC);
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RD_REG_WORD(®->ictrl);
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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}
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static inline void
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qla2x00_disable_intrs(scsi_qla_host_t *ha)
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{
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unsigned long flags = 0;
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device_reg_t __iomem *reg = ha->iobase;
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spin_lock_irqsave(&ha->hardware_lock, flags);
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ha->interrupts_on = 0;
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/* disable risc and host interrupts */
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WRT_REG_WORD(®->ictrl, 0);
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RD_REG_WORD(®->ictrl);
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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}
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static __inline__ int qla2x00_is_wwn_zero(uint8_t *);
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/*
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* qla2x00_is_wwn_zero - Check for zero node name
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*
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* Input:
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* wwn = Pointer to WW name to check
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*
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* Returns:
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* 1 if name is 0x00 else 0
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*
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* Context:
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* Kernel context.
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*/
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static __inline__ int
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qla2x00_is_wwn_zero(uint8_t *wwn)
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{
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int cnt;
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for (cnt = 0; cnt < WWN_SIZE ; cnt++, wwn++) {
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if (*wwn != 0)
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break;
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}
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/* if zero return 1 */
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if (cnt == WWN_SIZE)
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return (1);
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else
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return (0);
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}
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static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *);
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/*
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* This routine will wait for fabric devices for
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* the reset delay.
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*/
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static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *ha)
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{
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uint16_t fw_state;
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qla2x00_get_firmware_state(ha, &fw_state);
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}
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/**
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* qla2x00_issue_marker() - Issue a Marker IOCB if necessary.
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* @ha: HA context
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* @ha_locked: is function called with the hardware lock
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*
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* Returns non-zero if a failure occured, else zero.
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*/
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static inline int
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qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked)
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{
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/* Send marker if required */
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if (ha->marker_needed != 0) {
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if (ha_locked) {
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if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
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QLA_SUCCESS)
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return (QLA_FUNCTION_FAILED);
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} else {
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if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) !=
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QLA_SUCCESS)
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return (QLA_FUNCTION_FAILED);
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}
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ha->marker_needed = 0;
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}
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return (QLA_SUCCESS);
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}
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static __inline__ void qla2x00_add_timer_to_cmd(srb_t *, int);
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static __inline__ void qla2x00_delete_timer_from_cmd(srb_t *);
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/**************************************************************************
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* qla2x00_add_timer_to_cmd
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*
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* Description:
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* Creates a timer for the specified command. The timeout is usually
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* the command time from kernel minus 2 secs.
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*
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* Input:
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* sp - pointer to validate
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*
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* Returns:
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* None.
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**************************************************************************/
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static inline void
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qla2x00_add_timer_to_cmd(srb_t *sp, int timeout)
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{
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init_timer(&sp->timer);
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sp->timer.expires = jiffies + timeout * HZ;
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sp->timer.data = (unsigned long) sp;
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sp->timer.function = (void (*) (unsigned long))qla2x00_cmd_timeout;
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add_timer(&sp->timer);
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}
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/**************************************************************************
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* qla2x00_delete_timer_from_cmd
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*
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* Description:
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* Delete the timer for the specified command.
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*
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* Input:
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* sp - pointer to validate
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*
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* Returns:
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* None.
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**************************************************************************/
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static inline void
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qla2x00_delete_timer_from_cmd(srb_t *sp)
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{
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if (sp->timer.function != NULL) {
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del_timer(&sp->timer);
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sp->timer.function = NULL;
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sp->timer.data = (unsigned long) NULL;
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}
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}
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