diff options
Diffstat (limited to 'drivers/scsi/sym53c8xx_comm.h')
| -rw-r--r-- | drivers/scsi/sym53c8xx_comm.h | 792 |
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 20ae2b1..0000000 --- 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; -} |
