aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/sym53c8xx_comm.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/sym53c8xx_comm.h')
-rw-r--r--drivers/scsi/sym53c8xx_comm.h792
1 files changed, 0 insertions, 792 deletions
diff --git a/drivers/scsi/sym53c8xx_comm.h b/drivers/scsi/sym53c8xx_comm.h
deleted file mode 100644
index 20ae2b17df58..000000000000
--- a/drivers/scsi/sym53c8xx_comm.h
+++ /dev/null
@@ -1,792 +0,0 @@
-/******************************************************************************
-** High Performance device driver for the Symbios 53C896 controller.
-**
-** Copyright (C) 1998-2001 Gerard Roudier <groudier@free.fr>
-**
-** This driver also supports all the Symbios 53C8XX controller family,
-** except 53C810 revisions < 16, 53C825 revisions < 16 and all
-** revisions of 53C815 controllers.
-**
-** This driver is based on the Linux port of the FreeBSD ncr driver.
-**
-** Copyright (C) 1994 Wolfgang Stanglmeier
-**
-**-----------------------------------------------------------------------------
-**
-** 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 of the License, 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.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-**
-**-----------------------------------------------------------------------------
-**
-** The Linux port of the FreeBSD ncr driver has been achieved in
-** november 1995 by:
-**
-** Gerard Roudier <groudier@free.fr>
-**
-** Being given that this driver originates from the FreeBSD version, and
-** in order to keep synergy on both, any suggested enhancements and corrections
-** received on Linux are automatically a potential candidate for the FreeBSD
-** version.
-**
-** The original driver has been written for 386bsd and FreeBSD by
-** Wolfgang Stanglmeier <wolf@cologne.de>
-** Stefan Esser <se@mi.Uni-Koeln.de>
-**
-**-----------------------------------------------------------------------------
-**
-** Major contributions:
-** --------------------
-**
-** NVRAM detection and reading.
-** Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
-**
-*******************************************************************************
-*/
-
-/*==========================================================
-**
-** Debugging tags
-**
-**==========================================================
-*/
-
-#define DEBUG_ALLOC (0x0001)
-#define DEBUG_PHASE (0x0002)
-#define DEBUG_QUEUE (0x0008)
-#define DEBUG_RESULT (0x0010)
-#define DEBUG_POINTER (0x0020)
-#define DEBUG_SCRIPT (0x0040)
-#define DEBUG_TINY (0x0080)
-#define DEBUG_TIMING (0x0100)
-#define DEBUG_NEGO (0x0200)
-#define DEBUG_TAGS (0x0400)
-#define DEBUG_SCATTER (0x0800)
-#define DEBUG_IC (0x1000)
-
-/*
-** Enable/Disable debug messages.
-** Can be changed at runtime too.
-*/
-
-#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
-static int ncr_debug = SCSI_NCR_DEBUG_FLAGS;
- #define DEBUG_FLAGS ncr_debug
-#else
- #define DEBUG_FLAGS SCSI_NCR_DEBUG_FLAGS
-#endif
-
-static inline struct list_head *ncr_list_pop(struct list_head *head)
-{
- if (!list_empty(head)) {
- struct list_head *elem = head->next;
-
- list_del(elem);
- return elem;
- }
-
- return NULL;
-}
-
-#ifdef __sparc__
-#include <asm/irq.h>
-#endif
-
-/*==========================================================
-**
-** Simple power of two buddy-like allocator.
-**
-** This simple code is not intended to be fast, but to
-** provide power of 2 aligned memory allocations.
-** Since the SCRIPTS processor only supplies 8 bit
-** arithmetic, this allocator allows simple and fast
-** address calculations from the SCRIPTS code.
-** In addition, cache line alignment is guaranteed for
-** power of 2 cache line size.
-** Enhanced in linux-2.3.44 to provide a memory pool
-** per pcidev to support dynamic dma mapping. (I would
-** have preferred a real bus astraction, btw).
-**
-**==========================================================
-*/
-
-#define MEMO_SHIFT 4 /* 16 bytes minimum memory chunk */
-#if PAGE_SIZE >= 8192
-#define MEMO_PAGE_ORDER 0 /* 1 PAGE maximum */
-#else
-#define MEMO_PAGE_ORDER 1 /* 2 PAGES maximum */
-#endif
-#define MEMO_FREE_UNUSED /* Free unused pages immediately */
-#define MEMO_WARN 1
-#define MEMO_GFP_FLAGS GFP_ATOMIC
-#define MEMO_CLUSTER_SHIFT (PAGE_SHIFT+MEMO_PAGE_ORDER)
-#define MEMO_CLUSTER_SIZE (1UL << MEMO_CLUSTER_SHIFT)
-#define MEMO_CLUSTER_MASK (MEMO_CLUSTER_SIZE-1)
-
-typedef u_long m_addr_t; /* Enough bits to bit-hack addresses */
-typedef struct device *m_bush_t; /* Something that addresses DMAable */
-
-typedef struct m_link { /* Link between free memory chunks */
- struct m_link *next;
-} m_link_s;
-
-typedef struct m_vtob { /* Virtual to Bus address translation */
- struct m_vtob *next;
- m_addr_t vaddr;
- m_addr_t baddr;
-} m_vtob_s;
-#define VTOB_HASH_SHIFT 5
-#define VTOB_HASH_SIZE (1UL << VTOB_HASH_SHIFT)
-#define VTOB_HASH_MASK (VTOB_HASH_SIZE-1)
-#define VTOB_HASH_CODE(m) \
- ((((m_addr_t) (m)) >> MEMO_CLUSTER_SHIFT) & VTOB_HASH_MASK)
-
-typedef struct m_pool { /* Memory pool of a given kind */
- m_bush_t bush;
- m_addr_t (*getp)(struct m_pool *);
- void (*freep)(struct m_pool *, m_addr_t);
- int nump;
- m_vtob_s *(vtob[VTOB_HASH_SIZE]);
- struct m_pool *next;
- struct m_link h[PAGE_SHIFT-MEMO_SHIFT+MEMO_PAGE_ORDER+1];
-} m_pool_s;
-
-static void *___m_alloc(m_pool_s *mp, int size)
-{
- int i = 0;
- int s = (1 << MEMO_SHIFT);
- int j;
- m_addr_t a;
- m_link_s *h = mp->h;
-
- if (size > (PAGE_SIZE << MEMO_PAGE_ORDER))
- return NULL;
-
- while (size > s) {
- s <<= 1;
- ++i;
- }
-
- j = i;
- while (!h[j].next) {
- if (s == (PAGE_SIZE << MEMO_PAGE_ORDER)) {
- h[j].next = (m_link_s *)mp->getp(mp);
- if (h[j].next)
- h[j].next->next = NULL;
- break;
- }
- ++j;
- s <<= 1;
- }
- a = (m_addr_t) h[j].next;
- if (a) {
- h[j].next = h[j].next->next;
- while (j > i) {
- j -= 1;
- s >>= 1;
- h[j].next = (m_link_s *) (a+s);
- h[j].next->next = NULL;
- }
- }
-#ifdef DEBUG
- printk("___m_alloc(%d) = %p\n", size, (void *) a);
-#endif
- return (void *) a;
-}
-
-static void ___m_free(m_pool_s *mp, void *ptr, int size)
-{
- int i = 0;
- int s = (1 << MEMO_SHIFT);
- m_link_s *q;
- m_addr_t a, b;
- m_link_s *h = mp->h;
-
-#ifdef DEBUG
- printk("___m_free(%p, %d)\n", ptr, size);
-#endif
-
- if (size > (PAGE_SIZE << MEMO_PAGE_ORDER))
- return;
-
- while (size > s) {
- s <<= 1;
- ++i;
- }
-
- a = (m_addr_t) ptr;
-
- while (1) {
-#ifdef MEMO_FREE_UNUSED
- if (s == (PAGE_SIZE << MEMO_PAGE_ORDER)) {
- mp->freep(mp, a);
- break;
- }
-#endif
- b = a ^ s;
- q = &h[i];
- while (q->next && q->next != (m_link_s *) b) {
- q = q->next;
- }
- if (!q->next) {
- ((m_link_s *) a)->next = h[i].next;
- h[i].next = (m_link_s *) a;
- break;
- }
- q->next = q->next->next;
- a = a & b;
- s <<= 1;
- ++i;
- }
-}
-
-static DEFINE_SPINLOCK(ncr53c8xx_lock);
-
-static void *__m_calloc2(m_pool_s *mp, int size, char *name, int uflags)
-{
- void *p;
-
- p = ___m_alloc(mp, size);
-
- if (DEBUG_FLAGS & DEBUG_ALLOC)
- printk ("new %-10s[%4d] @%p.\n", name, size, p);
-
- if (p)
- memset(p, 0, size);
- else if (uflags & MEMO_WARN)
- printk (NAME53C8XX ": failed to allocate %s[%d]\n", name, size);
-
- return p;
-}
-
-#define __m_calloc(mp, s, n) __m_calloc2(mp, s, n, MEMO_WARN)
-
-static void __m_free(m_pool_s *mp, void *ptr, int size, char *name)
-{
- if (DEBUG_FLAGS & DEBUG_ALLOC)
- printk ("freeing %-10s[%4d] @%p.\n", name, size, ptr);
-
- ___m_free(mp, ptr, size);
-
-}
-
-/*
- * With pci bus iommu support, we use a default pool of unmapped memory
- * for memory we donnot need to DMA from/to and one pool per pcidev for
- * memory accessed by the PCI chip. `mp0' is the default not DMAable pool.
- */
-
-static m_addr_t ___mp0_getp(m_pool_s *mp)
-{
- m_addr_t m = __get_free_pages(MEMO_GFP_FLAGS, MEMO_PAGE_ORDER);
- if (m)
- ++mp->nump;
- return m;
-}
-
-static void ___mp0_freep(m_pool_s *mp, m_addr_t m)
-{
- free_pages(m, MEMO_PAGE_ORDER);
- --mp->nump;
-}
-
-static m_pool_s mp0 = {NULL, ___mp0_getp, ___mp0_freep};
-
-/*
- * DMAable pools.
- */
-
-/*
- * With pci bus iommu support, we maintain one pool per pcidev and a
- * hashed reverse table for virtual to bus physical address translations.
- */
-static m_addr_t ___dma_getp(m_pool_s *mp)
-{
- m_addr_t vp;
- m_vtob_s *vbp;
-
- vbp = __m_calloc(&mp0, sizeof(*vbp), "VTOB");
- if (vbp) {
- dma_addr_t daddr;
- vp = (m_addr_t) dma_alloc_coherent(mp->bush,
- PAGE_SIZE<<MEMO_PAGE_ORDER,
- &daddr, GFP_ATOMIC);
- if (vp) {
- int hc = VTOB_HASH_CODE(vp);
- vbp->vaddr = vp;
- vbp->baddr = daddr;
- vbp->next = mp->vtob[hc];
- mp->vtob[hc] = vbp;
- ++mp->nump;
- return vp;
- }
- }
- if (vbp)
- __m_free(&mp0, vbp, sizeof(*vbp), "VTOB");
- return 0;
-}
-
-static void ___dma_freep(m_pool_s *mp, m_addr_t m)
-{
- m_vtob_s **vbpp, *vbp;
- int hc = VTOB_HASH_CODE(m);
-
- vbpp = &mp->vtob[hc];
- while (*vbpp && (*vbpp)->vaddr != m)
- vbpp = &(*vbpp)->next;
- if (*vbpp) {
- vbp = *vbpp;
- *vbpp = (*vbpp)->next;
- dma_free_coherent(mp->bush, PAGE_SIZE<<MEMO_PAGE_ORDER,
- (void *)vbp->vaddr, (dma_addr_t)vbp->baddr);
- __m_free(&mp0, vbp, sizeof(*vbp), "VTOB");
- --mp->nump;
- }
-}
-
-static inline m_pool_s *___get_dma_pool(m_bush_t bush)
-{
- m_pool_s *mp;
- for (mp = mp0.next; mp && mp->bush != bush; mp = mp->next);
- return mp;
-}
-
-static m_pool_s *___cre_dma_pool(m_bush_t bush)
-{
- m_pool_s *mp;
- mp = __m_calloc(&mp0, sizeof(*mp), "MPOOL");
- if (mp) {
- memset(mp, 0, sizeof(*mp));
- mp->bush = bush;
- mp->getp = ___dma_getp;
- mp->freep = ___dma_freep;
- mp->next = mp0.next;
- mp0.next = mp;
- }
- return mp;
-}
-
-static void ___del_dma_pool(m_pool_s *p)
-{
- struct m_pool **pp = &mp0.next;
-
- while (*pp && *pp != p)
- pp = &(*pp)->next;
- if (*pp) {
- *pp = (*pp)->next;
- __m_free(&mp0, p, sizeof(*p), "MPOOL");
- }
-}
-
-static void *__m_calloc_dma(m_bush_t bush, int size, char *name)
-{
- u_long flags;
- struct m_pool *mp;
- void *m = NULL;
-
- spin_lock_irqsave(&ncr53c8xx_lock, flags);
- mp = ___get_dma_pool(bush);
- if (!mp)
- mp = ___cre_dma_pool(bush);
- if (mp)
- m = __m_calloc(mp, size, name);
- if (mp && !mp->nump)
- ___del_dma_pool(mp);
- spin_unlock_irqrestore(&ncr53c8xx_lock, flags);
-
- return m;
-}
-
-static void __m_free_dma(m_bush_t bush, void *m, int size, char *name)
-{
- u_long flags;
- struct m_pool *mp;
-
- spin_lock_irqsave(&ncr53c8xx_lock, flags);
- mp = ___get_dma_pool(bush);
- if (mp)
- __m_free(mp, m, size, name);
- if (mp && !mp->nump)
- ___del_dma_pool(mp);
- spin_unlock_irqrestore(&ncr53c8xx_lock, flags);
-}
-
-static m_addr_t __vtobus(m_bush_t bush, void *m)
-{
- u_long flags;
- m_pool_s *mp;
- int hc = VTOB_HASH_CODE(m);
- m_vtob_s *vp = NULL;
- m_addr_t a = ((m_addr_t) m) & ~MEMO_CLUSTER_MASK;
-
- spin_lock_irqsave(&ncr53c8xx_lock, flags);
- mp = ___get_dma_pool(bush);
- if (mp) {
- vp = mp->vtob[hc];
- while (vp && (m_addr_t) vp->vaddr != a)
- vp = vp->next;
- }
- spin_unlock_irqrestore(&ncr53c8xx_lock, flags);
- return vp ? vp->baddr + (((m_addr_t) m) - a) : 0;
-}
-
-#define _m_calloc_dma(np, s, n) __m_calloc_dma(np->dev, s, n)
-#define _m_free_dma(np, p, s, n) __m_free_dma(np->dev, p, s, n)
-#define m_calloc_dma(s, n) _m_calloc_dma(np, s, n)
-#define m_free_dma(p, s, n) _m_free_dma(np, p, s, n)
-#define _vtobus(np, p) __vtobus(np->dev, p)
-#define vtobus(p) _vtobus(np, p)
-
-/*
- * Deal with DMA mapping/unmapping.
- */
-
-/* To keep track of the dma mapping (sg/single) that has been set */
-#define __data_mapped SCp.phase
-#define __data_mapping SCp.have_data_in
-
-static void __unmap_scsi_data(struct device *dev, struct scsi_cmnd *cmd)
-{
- switch(cmd->__data_mapped) {
- case 2:
- dma_unmap_sg(dev, cmd->buffer, cmd->use_sg,
- cmd->sc_data_direction);
- break;
- case 1:
- dma_unmap_single(dev, cmd->__data_mapping,
- cmd->request_bufflen,
- cmd->sc_data_direction);
- break;
- }
- cmd->__data_mapped = 0;
-}
-
-static u_long __map_scsi_single_data(struct device *dev, struct scsi_cmnd *cmd)
-{
- dma_addr_t mapping;
-
- if (cmd->request_bufflen == 0)
- return 0;
-
- mapping = dma_map_single(dev, cmd->request_buffer,
- cmd->request_bufflen,
- cmd->sc_data_direction);
- cmd->__data_mapped = 1;
- cmd->__data_mapping = mapping;
-
- return mapping;
-}
-
-static int __map_scsi_sg_data(struct device *dev, struct scsi_cmnd *cmd)
-{
- int use_sg;
-
- if (cmd->use_sg == 0)
- return 0;
-
- use_sg = dma_map_sg(dev, cmd->buffer, cmd->use_sg,
- cmd->sc_data_direction);
- cmd->__data_mapped = 2;
- cmd->__data_mapping = use_sg;
-
- return use_sg;
-}
-
-#define unmap_scsi_data(np, cmd) __unmap_scsi_data(np->dev, cmd)
-#define map_scsi_single_data(np, cmd) __map_scsi_single_data(np->dev, cmd)
-#define map_scsi_sg_data(np, cmd) __map_scsi_sg_data(np->dev, cmd)
-
-/*==========================================================
-**
-** Driver setup.
-**
-** This structure is initialized from linux config
-** options. It can be overridden at boot-up by the boot
-** command line.
-**
-**==========================================================
-*/
-static struct ncr_driver_setup
- driver_setup = SCSI_NCR_DRIVER_SETUP;
-
-#ifdef SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
-static struct ncr_driver_setup
- driver_safe_setup __initdata = SCSI_NCR_DRIVER_SAFE_SETUP;
-#endif
-
-#define initverbose (driver_setup.verbose)
-#define bootverbose (np->verbose)
-
-
-/*===================================================================
-**
-** Driver setup from the boot command line
-**
-**===================================================================
-*/
-
-#ifdef MODULE
-#define ARG_SEP ' '
-#else
-#define ARG_SEP ','
-#endif
-
-#define OPT_TAGS 1
-#define OPT_MASTER_PARITY 2
-#define OPT_SCSI_PARITY 3
-#define OPT_DISCONNECTION 4
-#define OPT_SPECIAL_FEATURES 5
-#define OPT_UNUSED_1 6
-#define OPT_FORCE_SYNC_NEGO 7
-#define OPT_REVERSE_PROBE 8
-#define OPT_DEFAULT_SYNC 9
-#define OPT_VERBOSE 10
-#define OPT_DEBUG 11
-#define OPT_BURST_MAX 12
-#define OPT_LED_PIN 13
-#define OPT_MAX_WIDE 14
-#define OPT_SETTLE_DELAY 15
-#define OPT_DIFF_SUPPORT 16
-#define OPT_IRQM 17
-#define OPT_PCI_FIX_UP 18
-#define OPT_BUS_CHECK 19
-#define OPT_OPTIMIZE 20
-#define OPT_RECOVERY 21
-#define OPT_SAFE_SETUP 22
-#define OPT_USE_NVRAM 23
-#define OPT_EXCLUDE 24
-#define OPT_HOST_ID 25
-
-#ifdef SCSI_NCR_IARB_SUPPORT
-#define OPT_IARB 26
-#endif
-
-static char setup_token[] __initdata =
- "tags:" "mpar:"
- "spar:" "disc:"
- "specf:" "ultra:"
- "fsn:" "revprob:"
- "sync:" "verb:"
- "debug:" "burst:"
- "led:" "wide:"
- "settle:" "diff:"
- "irqm:" "pcifix:"
- "buschk:" "optim:"
- "recovery:"
- "safe:" "nvram:"
- "excl:" "hostid:"
-#ifdef SCSI_NCR_IARB_SUPPORT
- "iarb:"
-#endif
- ; /* DONNOT REMOVE THIS ';' */
-
-#ifdef MODULE
-#define ARG_SEP ' '
-#else
-#define ARG_SEP ','
-#endif
-
-static int __init get_setup_token(char *p)
-{
- char *cur = setup_token;
- char *pc;
- int i = 0;
-
- while (cur != NULL && (pc = strchr(cur, ':')) != NULL) {
- ++pc;
- ++i;
- if (!strncmp(p, cur, pc - cur))
- return i;
- cur = pc;
- }
- return 0;
-}
-
-
-static int __init sym53c8xx__setup(char *str)
-{
-#ifdef SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
- char *cur = str;
- char *pc, *pv;
- int i, val, c;
- int xi = 0;
-
- while (cur != NULL && (pc = strchr(cur, ':')) != NULL) {
- char *pe;
-
- val = 0;
- pv = pc;
- c = *++pv;
-
- if (c == 'n')
- val = 0;
- else if (c == 'y')
- val = 1;
- else
- val = (int) simple_strtoul(pv, &pe, 0);
-
- switch (get_setup_token(cur)) {
- case OPT_TAGS:
- driver_setup.default_tags = val;
- if (pe && *pe == '/') {
- i = 0;
- while (*pe && *pe != ARG_SEP &&
- i < sizeof(driver_setup.tag_ctrl)-1) {
- driver_setup.tag_ctrl[i++] = *pe++;
- }
- driver_setup.tag_ctrl[i] = '\0';
- }
- break;
- case OPT_MASTER_PARITY:
- driver_setup.master_parity = val;
- break;
- case OPT_SCSI_PARITY:
- driver_setup.scsi_parity = val;
- break;
- case OPT_DISCONNECTION:
- driver_setup.disconnection = val;
- break;
- case OPT_SPECIAL_FEATURES:
- driver_setup.special_features = val;
- break;
- case OPT_FORCE_SYNC_NEGO:
- driver_setup.force_sync_nego = val;
- break;
- case OPT_REVERSE_PROBE:
- driver_setup.reverse_probe = val;
- break;
- case OPT_DEFAULT_SYNC:
- driver_setup.default_sync = val;
- break;
- case OPT_VERBOSE:
- driver_setup.verbose = val;
- break;
- case OPT_DEBUG:
- driver_setup.debug = val;
- break;
- case OPT_BURST_MAX:
- driver_setup.burst_max = val;
- break;
- case OPT_LED_PIN:
- driver_setup.led_pin = val;
- break;
- case OPT_MAX_WIDE:
- driver_setup.max_wide = val? 1:0;
- break;
- case OPT_SETTLE_DELAY:
- driver_setup.settle_delay = val;
- break;
- case OPT_DIFF_SUPPORT:
- driver_setup.diff_support = val;
- break;
- case OPT_IRQM:
- driver_setup.irqm = val;
- break;
- case OPT_PCI_FIX_UP:
- driver_setup.pci_fix_up = val;
- break;
- case OPT_BUS_CHECK:
- driver_setup.bus_check = val;
- break;
- case OPT_OPTIMIZE:
- driver_setup.optimize = val;
- break;
- case OPT_RECOVERY:
- driver_setup.recovery = val;
- break;
- case OPT_USE_NVRAM:
- driver_setup.use_nvram = val;
- break;
- case OPT_SAFE_SETUP:
- memcpy(&driver_setup, &driver_safe_setup,
- sizeof(driver_setup));
- break;
- case OPT_EXCLUDE:
- if (xi < SCSI_NCR_MAX_EXCLUDES)
- driver_setup.excludes[xi++] = val;
- break;
- case OPT_HOST_ID:
- driver_setup.host_id = val;
- break;
-#ifdef SCSI_NCR_IARB_SUPPORT
- case OPT_IARB:
- driver_setup.iarb = val;
- break;
-#endif
- default:
- printk("sym53c8xx_setup: unexpected boot option '%.*s' ignored\n", (int)(pc-cur+1), cur);
- break;
- }
-
- if ((cur = strchr(cur, ARG_SEP)) != NULL)
- ++cur;
- }
-#endif /* SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT */
- return 1;
-}
-
-/*===================================================================
-**
-** Get device queue depth from boot command line.
-**
-**===================================================================
-*/
-#define DEF_DEPTH (driver_setup.default_tags)
-#define ALL_TARGETS -2
-#define NO_TARGET -1
-#define ALL_LUNS -2
-#define NO_LUN -1
-
-static int device_queue_depth(int unit, int target, int lun)
-{
- int c, h, t, u, v;
- char *p = driver_setup.tag_ctrl;
- char *ep;
-
- h = -1;
- t = NO_TARGET;
- u = NO_LUN;
- while ((c = *p++) != 0) {
- v = simple_strtoul(p, &ep, 0);
- switch(c) {
- case '/':
- ++h;
- t = ALL_TARGETS;
- u = ALL_LUNS;
- break;
- case 't':
- if (t != target)
- t = (target == v) ? v : NO_TARGET;
- u = ALL_LUNS;
- break;
- case 'u':
- if (u != lun)
- u = (lun == v) ? v : NO_LUN;
- break;
- case 'q':
- if (h == unit &&
- (t == ALL_TARGETS || t == target) &&
- (u == ALL_LUNS || u == lun))
- return v;
- break;
- case '-':
- t = ALL_TARGETS;
- u = ALL_LUNS;
- break;
- default:
- break;
- }
- p = ep;
- }
- return DEF_DEPTH;
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.