diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_inline.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_inline.h | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h new file mode 100644 index 000000000000..07c11330f9a3 --- /dev/null +++ b/drivers/scsi/qla2xxx/qla_inline.h @@ -0,0 +1,292 @@ +/* + * QLOGIC LINUX SOFTWARE + * + * QLogic ISP2x00 device driver for Linux 2.6.x + * Copyright (C) 2003-2004 QLogic Corporation + * (www.qlogic.com) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ + + +static __inline__ uint16_t qla2x00_debounce_register(volatile uint16_t __iomem *); +/* + * qla2x00_debounce_register + * Debounce register. + * + * Input: + * port = register address. + * + * Returns: + * register value. + */ +static __inline__ uint16_t +qla2x00_debounce_register(volatile uint16_t __iomem *addr) +{ + volatile uint16_t first; + volatile uint16_t second; + + do { + first = RD_REG_WORD(addr); + barrier(); + cpu_relax(); + second = RD_REG_WORD(addr); + } while (first != second); + + return (first); +} + +static __inline__ int qla2x00_normalize_dma_addr( + dma_addr_t *e_addr, uint32_t *e_len, + dma_addr_t *ne_addr, uint32_t *ne_len); + +/** + * qla2x00_normalize_dma_addr() - Normalize an DMA address. + * @e_addr: Raw DMA address + * @e_len: Raw DMA length + * @ne_addr: Normalized second DMA address + * @ne_len: Normalized second DMA length + * + * If the address does not span a 4GB page boundary, the contents of @ne_addr + * and @ne_len are undefined. @e_len is updated to reflect a normalization. + * + * Example: + * + * ffffabc0ffffeeee (e_addr) start of DMA address + * 0000000020000000 (e_len) length of DMA transfer + * ffffabc11fffeeed end of DMA transfer + * + * Is the 4GB boundary crossed? + * + * ffffabc0ffffeeee (e_addr) + * ffffabc11fffeeed (e_addr + e_len - 1) + * 00000001e0000003 ((e_addr ^ (e_addr + e_len - 1)) + * 0000000100000000 ((e_addr ^ (e_addr + e_len - 1)) & ~(0xffffffff) + * + * Compute start of second DMA segment: + * + * ffffabc0ffffeeee (e_addr) + * ffffabc1ffffeeee (0x100000000 + e_addr) + * ffffabc100000000 (0x100000000 + e_addr) & ~(0xffffffff) + * ffffabc100000000 (ne_addr) + * + * Compute length of second DMA segment: + * + * 00000000ffffeeee (e_addr & 0xffffffff) + * 0000000000001112 (0x100000000 - (e_addr & 0xffffffff)) + * 000000001fffeeee (e_len - (0x100000000 - (e_addr & 0xffffffff)) + * 000000001fffeeee (ne_len) + * + * Adjust length of first DMA segment + * + * 0000000020000000 (e_len) + * 0000000000001112 (e_len - ne_len) + * 0000000000001112 (e_len) + * + * Returns non-zero if the specified address was normalized, else zero. + */ +static __inline__ int +qla2x00_normalize_dma_addr( + dma_addr_t *e_addr, uint32_t *e_len, + dma_addr_t *ne_addr, uint32_t *ne_len) +{ + int normalized; + + normalized = 0; + if ((*e_addr ^ (*e_addr + *e_len - 1)) & ~(0xFFFFFFFFULL)) { + /* Compute normalized crossed address and len */ + *ne_addr = (0x100000000ULL + *e_addr) & ~(0xFFFFFFFFULL); + *ne_len = *e_len - (0x100000000ULL - (*e_addr & 0xFFFFFFFFULL)); + *e_len -= *ne_len; + + normalized++; + } + return (normalized); +} + +static __inline__ void qla2x00_poll(scsi_qla_host_t *); +static inline void +qla2x00_poll(scsi_qla_host_t *ha) +{ + if (IS_QLA2100(ha) || IS_QLA2200(ha)) + qla2100_intr_handler(0, ha, NULL); + else + qla2300_intr_handler(0, ha, NULL); +} + + +static __inline__ void qla2x00_enable_intrs(scsi_qla_host_t *); +static __inline__ void qla2x00_disable_intrs(scsi_qla_host_t *); + +static inline void +qla2x00_enable_intrs(scsi_qla_host_t *ha) +{ + unsigned long flags = 0; + device_reg_t __iomem *reg = ha->iobase; + + spin_lock_irqsave(&ha->hardware_lock, flags); + ha->interrupts_on = 1; + /* enable risc and host interrupts */ + WRT_REG_WORD(®->ictrl, ICR_EN_INT | ICR_EN_RISC); + RD_REG_WORD(®->ictrl); + spin_unlock_irqrestore(&ha->hardware_lock, flags); + +} + +static inline void +qla2x00_disable_intrs(scsi_qla_host_t *ha) +{ + unsigned long flags = 0; + device_reg_t __iomem *reg = ha->iobase; + + spin_lock_irqsave(&ha->hardware_lock, flags); + ha->interrupts_on = 0; + /* disable risc and host interrupts */ + WRT_REG_WORD(®->ictrl, 0); + RD_REG_WORD(®->ictrl); + spin_unlock_irqrestore(&ha->hardware_lock, flags); +} + + +static __inline__ int qla2x00_is_wwn_zero(uint8_t *); + +/* + * qla2x00_is_wwn_zero - Check for zero node name + * + * Input: + * wwn = Pointer to WW name to check + * + * Returns: + * 1 if name is 0x00 else 0 + * + * Context: + * Kernel context. + */ +static __inline__ int +qla2x00_is_wwn_zero(uint8_t *wwn) +{ + int cnt; + + for (cnt = 0; cnt < WWN_SIZE ; cnt++, wwn++) { + if (*wwn != 0) + break; + } + /* if zero return 1 */ + if (cnt == WWN_SIZE) + return (1); + else + return (0); +} + +static __inline__ uint8_t +qla2x00_suspend_lun(scsi_qla_host_t *, os_lun_t *, int, int); +static __inline__ uint8_t +qla2x00_delay_lun(scsi_qla_host_t *, os_lun_t *, int); + +static __inline__ uint8_t +qla2x00_suspend_lun(scsi_qla_host_t *ha, os_lun_t *lq, int time, int count) +{ + return (__qla2x00_suspend_lun(ha, lq, time, count, 0)); +} + +static __inline__ uint8_t +qla2x00_delay_lun(scsi_qla_host_t *ha, os_lun_t *lq, int time) +{ + return (__qla2x00_suspend_lun(ha, lq, time, 1, 1)); +} + +static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *); +/* + * This routine will wait for fabric devices for + * the reset delay. + */ +static __inline__ void qla2x00_check_fabric_devices(scsi_qla_host_t *ha) +{ + uint16_t fw_state; + + qla2x00_get_firmware_state(ha, &fw_state); +} + +/** + * qla2x00_issue_marker() - Issue a Marker IOCB if necessary. + * @ha: HA context + * @ha_locked: is function called with the hardware lock + * + * Returns non-zero if a failure occured, else zero. + */ +static inline int +qla2x00_issue_marker(scsi_qla_host_t *ha, int ha_locked) +{ + /* Send marker if required */ + if (ha->marker_needed != 0) { + if (ha_locked) { + if (__qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != + QLA_SUCCESS) + return (QLA_FUNCTION_FAILED); + } else { + if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != + QLA_SUCCESS) + return (QLA_FUNCTION_FAILED); + } + ha->marker_needed = 0; + } + return (QLA_SUCCESS); +} + +static __inline__ void qla2x00_add_timer_to_cmd(srb_t *, int); +static __inline__ void qla2x00_delete_timer_from_cmd(srb_t *); + +/************************************************************************** +* qla2x00_add_timer_to_cmd +* +* Description: +* Creates a timer for the specified command. The timeout is usually +* the command time from kernel minus 2 secs. +* +* Input: +* sp - pointer to validate +* +* Returns: +* None. +**************************************************************************/ +static inline void +qla2x00_add_timer_to_cmd(srb_t *sp, int timeout) +{ + init_timer(&sp->timer); + sp->timer.expires = jiffies + timeout * HZ; + sp->timer.data = (unsigned long) sp; + sp->timer.function = (void (*) (unsigned long))qla2x00_cmd_timeout; + add_timer(&sp->timer); +} + +/************************************************************************** +* qla2x00_delete_timer_from_cmd +* +* Description: +* Delete the timer for the specified command. +* +* Input: +* sp - pointer to validate +* +* Returns: +* None. +**************************************************************************/ +static inline void +qla2x00_delete_timer_from_cmd(srb_t *sp) +{ + if (sp->timer.function != NULL) { + del_timer(&sp->timer); + sp->timer.function = NULL; + sp->timer.data = (unsigned long) NULL; + } +} + |