sym53c8xx_comm.h
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- /******************************************************************************
- ** 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>
- **
- *******************************************************************************
- */
- /*
- ** This file contains definitions and code that the
- ** sym53c8xx and ncr53c8xx drivers should share.
- ** The sharing will be achieved in a further version
- ** of the driver bundle. For now, only the ncr53c8xx
- ** driver includes this file.
- */
- #define MIN(a,b) (((a) < (b)) ? (a) : (b))
- #define MAX(a,b) (((a) > (b)) ? (a) : (b))
- /*==========================================================
- **
- ** Hmmm... What complex some PCI-HOST bridges actually
- ** are, despite the fact that the PCI specifications
- ** are looking so smart and simple! ;-)
- **
- **==========================================================
- */
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,3,47)
- #define SCSI_NCR_DYNAMIC_DMA_MAPPING
- #endif
- /*==========================================================
- **
- ** Miscallaneous defines.
- **
- **==========================================================
- */
- #define u_char unsigned char
- #define u_short unsigned short
- #define u_int unsigned int
- #define u_long unsigned long
- #ifndef bcopy
- #define bcopy(s, d, n) memcpy((d), (s), (n))
- #endif
- #ifndef bcmp
- #define bcmp(s, d, n) memcmp((d), (s), (n))
- #endif
- #ifndef bzero
- #define bzero(d, n) memset((d), 0, (n))
- #endif
-
- #ifndef offsetof
- #define offsetof(t, m) ((size_t) (&((t *)0)->m))
- #endif
- /*==========================================================
- **
- ** assert ()
- **
- **==========================================================
- **
- ** modified copy from 386bsd:/usr/include/sys/assert.h
- **
- **----------------------------------------------------------
- */
- #define assert(expression) {
- if (!(expression)) {
- (void)panic(
- "assertion "%s" failed: file "%s", line %dn",
- #expression,
- __FILE__, __LINE__);
- }
- }
- /*==========================================================
- **
- ** 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
- /*==========================================================
- **
- ** A la VMS/CAM-3 queue management.
- ** Implemented from linux list management.
- **
- **==========================================================
- */
- typedef struct xpt_quehead {
- struct xpt_quehead *flink; /* Forward pointer */
- struct xpt_quehead *blink; /* Backward pointer */
- } XPT_QUEHEAD;
- #define xpt_que_init(ptr) do {
- (ptr)->flink = (ptr); (ptr)->blink = (ptr);
- } while (0)
- static inline void __xpt_que_add(struct xpt_quehead * new,
- struct xpt_quehead * blink,
- struct xpt_quehead * flink)
- {
- flink->blink = new;
- new->flink = flink;
- new->blink = blink;
- blink->flink = new;
- }
- static inline void __xpt_que_del(struct xpt_quehead * blink,
- struct xpt_quehead * flink)
- {
- flink->blink = blink;
- blink->flink = flink;
- }
- static inline int xpt_que_empty(struct xpt_quehead *head)
- {
- return head->flink == head;
- }
- static inline void xpt_que_splice(struct xpt_quehead *list,
- struct xpt_quehead *head)
- {
- struct xpt_quehead *first = list->flink;
- if (first != list) {
- struct xpt_quehead *last = list->blink;
- struct xpt_quehead *at = head->flink;
- first->blink = head;
- head->flink = first;
- last->flink = at;
- at->blink = last;
- }
- }
- #define xpt_que_entry(ptr, type, member)
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
- #define xpt_insque(new, pos) __xpt_que_add(new, pos, (pos)->flink)
- #define xpt_remque(el) __xpt_que_del((el)->blink, (el)->flink)
- #define xpt_insque_head(new, head) __xpt_que_add(new, head, (head)->flink)
- static inline struct xpt_quehead *xpt_remque_head(struct xpt_quehead *head)
- {
- struct xpt_quehead *elem = head->flink;
- if (elem != head)
- __xpt_que_del(head, elem->flink);
- else
- elem = 0;
- return elem;
- }
- #define xpt_insque_tail(new, head) __xpt_que_add(new, (head)->blink, head)
- static inline struct xpt_quehead *xpt_remque_tail(struct xpt_quehead *head)
- {
- struct xpt_quehead *elem = head->blink;
- if (elem != head)
- __xpt_que_del(elem->blink, head);
- else
- elem = 0;
- return elem;
- }
- /*==========================================================
- **
- ** Simple Wrapper to kernel PCI bus interface.
- **
- ** This wrapper allows to get rid of old kernel PCI
- ** interface and still allows to preserve linux-2.0
- ** compatibilty. In fact, it is mostly an incomplete
- ** emulation of the new PCI code for pre-2.2 kernels.
- ** When kernel-2.0 support will be dropped, we will
- ** just have to remove most of this code.
- **
- **==========================================================
- */
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,2,0)
- typedef struct pci_dev *pcidev_t;
- #define PCIDEV_NULL (0)
- #define PciBusNumber(d) (d)->bus->number
- #define PciDeviceFn(d) (d)->devfn
- #define PciVendorId(d) (d)->vendor
- #define PciDeviceId(d) (d)->device
- #define PciIrqLine(d) (d)->irq
- static u_long __init
- pci_get_base_cookie(struct pci_dev *pdev, int index)
- {
- u_long base;
- #if LINUX_VERSION_CODE > LinuxVersionCode(2,3,12)
- base = pdev->resource[index].start;
- #else
- base = pdev->base_address[index];
- #if BITS_PER_LONG > 32
- if ((base & 0x7) == 0x4)
- *base |= (((u_long)pdev->base_address[++index]) << 32);
- #endif
- #endif
- return (base & ~0x7ul);
- }
- static int __init
- pci_get_base_address(struct pci_dev *pdev, int index, u_long *base)
- {
- u32 tmp;
- #define PCI_BAR_OFFSET(index) (PCI_BASE_ADDRESS_0 + (index<<2))
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base = tmp;
- ++index;
- if ((tmp & 0x7) == 0x4) {
- #if BITS_PER_LONG > 32
- pci_read_config_dword(pdev, PCI_BAR_OFFSET(index), &tmp);
- *base |= (((u_long)tmp) << 32);
- #endif
- ++index;
- }
- return index;
- #undef PCI_BAR_OFFSET
- }
- #else /* Incomplete emulation of current PCI code for pre-2.2 kernels */
- typedef unsigned int pcidev_t;
- #define PCIDEV_NULL (~0u)
- #define PciBusNumber(d) ((d)>>8)
- #define PciDeviceFn(d) ((d)&0xff)
- #define __PciDev(busn, devfn) (((busn)<<8)+(devfn))
- #define pci_present pcibios_present
- #define pci_read_config_byte(d, w, v)
- pcibios_read_config_byte(PciBusNumber(d), PciDeviceFn(d), w, v)
- #define pci_read_config_word(d, w, v)
- pcibios_read_config_word(PciBusNumber(d), PciDeviceFn(d), w, v)
- #define pci_read_config_dword(d, w, v)
- pcibios_read_config_dword(PciBusNumber(d), PciDeviceFn(d), w, v)
- #define pci_write_config_byte(d, w, v)
- pcibios_write_config_byte(PciBusNumber(d), PciDeviceFn(d), w, v)
- #define pci_write_config_word(d, w, v)
- pcibios_write_config_word(PciBusNumber(d), PciDeviceFn(d), w, v)
- #define pci_write_config_dword(d, w, v)
- pcibios_write_config_dword(PciBusNumber(d), PciDeviceFn(d), w, v)
- static pcidev_t __init
- pci_find_device(unsigned int vendor, unsigned int device, pcidev_t prev)
- {
- static unsigned short pci_index;
- int retv;
- unsigned char bus_number, device_fn;
- if (prev == PCIDEV_NULL)
- pci_index = 0;
- else
- ++pci_index;
- retv = pcibios_find_device (vendor, device, pci_index,
- &bus_number, &device_fn);
- return retv ? PCIDEV_NULL : __PciDev(bus_number, device_fn);
- }
- static u_short __init PciVendorId(pcidev_t dev)
- {
- u_short vendor_id;
- pci_read_config_word(dev, PCI_VENDOR_ID, &vendor_id);
- return vendor_id;
- }
- static u_short __init PciDeviceId(pcidev_t dev)
- {
- u_short device_id;
- pci_read_config_word(dev, PCI_DEVICE_ID, &device_id);
- return device_id;
- }
- static u_int __init PciIrqLine(pcidev_t dev)
- {
- u_char irq;
- pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
- return irq;
- }
- static int __init
- pci_get_base_address(pcidev_t dev, int offset, u_long *base)
- {
- u_int32 tmp;
-
- pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + offset, &tmp);
- *base = tmp;
- offset += sizeof(u_int32);
- if ((tmp & 0x7) == 0x4) {
- #if BITS_PER_LONG > 32
- pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + offset, &tmp);
- *base |= (((u_long)tmp) << 32);
- #endif
- offset += sizeof(u_int32);
- }
- return offset;
- }
- static u_long __init
- pci_get_base_cookie(struct pci_dev *pdev, int offset)
- {
- u_long base;
- (void) pci_get_base_address(dev, offset, &base);
- return base;
- }
- #endif /* LINUX_VERSION_CODE >= LinuxVersionCode(2,2,0) */
- /* Does not make sense in earlier kernels */
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,4,0)
- #define pci_enable_device(pdev) (0)
- #endif
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,4,4)
- #define scsi_set_pci_device(inst, pdev) (0)
- #endif
- /*==========================================================
- **
- ** SMP threading.
- **
- ** Assuming that SMP systems are generally high end
- ** systems and may use several SCSI adapters, we are
- ** using one lock per controller instead of some global
- ** one. For the moment (linux-2.1.95), driver's entry
- ** points are called with the 'io_request_lock' lock
- ** held, so:
- ** - We are uselessly loosing a couple of micro-seconds
- ** to lock the controller data structure.
- ** - But the driver is not broken by design for SMP and
- ** so can be more resistant to bugs or bad changes in
- ** the IO sub-system code.
- ** - A small advantage could be that the interrupt code
- ** is grained as wished (e.g.: by controller).
- **
- **==========================================================
- */
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,93)
- spinlock_t DRIVER_SMP_LOCK = SPIN_LOCK_UNLOCKED;
- #define NCR_LOCK_DRIVER(flags) spin_lock_irqsave(&DRIVER_SMP_LOCK, flags)
- #define NCR_UNLOCK_DRIVER(flags)
- spin_unlock_irqrestore(&DRIVER_SMP_LOCK, flags)
- #define NCR_INIT_LOCK_NCB(np) spin_lock_init(&np->smp_lock)
- #define NCR_LOCK_NCB(np, flags) spin_lock_irqsave(&np->smp_lock, flags)
- #define NCR_UNLOCK_NCB(np, flags) spin_unlock_irqrestore(&np->smp_lock, flags)
- #define NCR_LOCK_SCSI_DONE(np, flags)
- spin_lock_irqsave(&io_request_lock, flags)
- #define NCR_UNLOCK_SCSI_DONE(np, flags)
- spin_unlock_irqrestore(&io_request_lock, flags)
- #else
- #define NCR_LOCK_DRIVER(flags) do { save_flags(flags); cli(); } while (0)
- #define NCR_UNLOCK_DRIVER(flags) do { restore_flags(flags); } while (0)
- #define NCR_INIT_LOCK_NCB(np) do { } while (0)
- #define NCR_LOCK_NCB(np, flags) do { save_flags(flags); cli(); } while (0)
- #define NCR_UNLOCK_NCB(np, flags) do { restore_flags(flags); } while (0)
- #define NCR_LOCK_SCSI_DONE(np, flags) do {;} while (0)
- #define NCR_UNLOCK_SCSI_DONE(np, flags) do {;} while (0)
- #endif
- /*==========================================================
- **
- ** Memory mapped IO
- **
- ** Since linux-2.1, we must use ioremap() to map the io
- ** memory space and iounmap() to unmap it. This allows
- ** portability. Linux 1.3.X and 2.0.X allow to remap
- ** physical pages addresses greater than the highest
- ** physical memory address to kernel virtual pages with
- ** vremap() / vfree(). That was not portable but worked
- ** with i386 architecture.
- **
- **==========================================================
- */
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,1,0)
- #define ioremap vremap
- #define iounmap vfree
- #endif
- #ifdef __sparc__
- # include <asm/irq.h>
- # define memcpy_to_pci(a, b, c) memcpy_toio((a), (b), (c))
- #elif defined(__alpha__)
- # define memcpy_to_pci(a, b, c) memcpy_toio((a), (b), (c))
- #else /* others */
- # define memcpy_to_pci(a, b, c) memcpy_toio((a), (b), (c))
- #endif
- #ifndef SCSI_NCR_PCI_MEM_NOT_SUPPORTED
- static u_long __init remap_pci_mem(u_long base, u_long size)
- {
- u_long page_base = ((u_long) base) & PAGE_MASK;
- u_long page_offs = ((u_long) base) - page_base;
- u_long page_remapped = (u_long) ioremap(page_base, page_offs+size);
- return page_remapped? (page_remapped + page_offs) : 0UL;
- }
- static void __init unmap_pci_mem(u_long vaddr, u_long size)
- {
- if (vaddr)
- iounmap((void *) (vaddr & PAGE_MASK));
- }
- #endif /* not def SCSI_NCR_PCI_MEM_NOT_SUPPORTED */
- /*==========================================================
- **
- ** Insert a delay in micro-seconds and milli-seconds.
- **
- ** Under Linux, udelay() is restricted to delay <
- ** 1 milli-second. In fact, it generally works for up
- ** to 1 second delay. Since 2.1.105, the mdelay() function
- ** is provided for delays in milli-seconds.
- ** Under 2.0 kernels, udelay() is an inline function
- ** that is very inaccurate on Pentium processors.
- **
- **==========================================================
- */
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,105)
- #define UDELAY udelay
- #define MDELAY mdelay
- #else
- static void UDELAY(long us) { udelay(us); }
- static void MDELAY(long ms) { while (ms--) UDELAY(1000); }
- #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).
- **
- **==========================================================
- */
- #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,0)
- #define __GetFreePages(flags, order) __get_free_pages(flags, order)
- #else
- #define __GetFreePages(flags, order) __get_free_pages(flags, order, 0)
- #endif
- #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 pcidev_t m_bush_t; /* Something that addresses DMAable */
- typedef struct m_link { /* Link between free memory chunks */
- struct m_link *next;
- } m_link_s;
- #ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- 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)
- #endif
- typedef struct m_pool { /* Memory pool of a given kind */
- #ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- m_bush_t bush;
- m_addr_t (*getp)(struct m_pool *);
- void (*freep)(struct m_pool *, m_addr_t);
- #define M_GETP() mp->getp(mp)
- #define M_FREEP(p) mp->freep(mp, p)
- #define GetPages() __GetFreePages(MEMO_GFP_FLAGS, MEMO_PAGE_ORDER)
- #define FreePages(p) free_pages(p, MEMO_PAGE_ORDER)
- int nump;
- m_vtob_s *(vtob[VTOB_HASH_SIZE]);
- struct m_pool *next;
- #else
- #define M_GETP() __GetFreePages(MEMO_GFP_FLAGS, MEMO_PAGE_ORDER)
- #define M_FREEP(p) free_pages(p, MEMO_PAGE_ORDER)
- #endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
- 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 0;
- 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 *) M_GETP();
- if (h[j].next)
- h[j].next->next = 0;
- 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 = 0;
- }
- }
- #ifdef DEBUG
- printk("___m_alloc(%d) = %pn", 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)) {
- M_FREEP(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 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)
- bzero(p, 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.
- */
- #ifndef SCSI_NCR_DYNAMIC_DMA_MAPPING
- static m_pool_s mp0;
- #else
- static m_addr_t ___mp0_getp(m_pool_s *mp)
- {
- m_addr_t m = GetPages();
- if (m)
- ++mp->nump;
- return m;
- }
- static void ___mp0_freep(m_pool_s *mp, m_addr_t m)
- {
- FreePages(m);
- --mp->nump;
- }
- static m_pool_s mp0 = {0, ___mp0_getp, ___mp0_freep};
- #endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
- static void *m_calloc(int size, char *name)
- {
- u_long flags;
- void *m;
- NCR_LOCK_DRIVER(flags);
- m = __m_calloc(&mp0, size, name);
- NCR_UNLOCK_DRIVER(flags);
- return m;
- }
- static void m_free(void *ptr, int size, char *name)
- {
- u_long flags;
- NCR_LOCK_DRIVER(flags);
- __m_free(&mp0, ptr, size, name);
- NCR_UNLOCK_DRIVER(flags);
- }
- /*
- * DMAable pools.
- */
- #ifndef SCSI_NCR_DYNAMIC_DMA_MAPPING
- /* Without pci bus iommu support, all the memory is assumed DMAable */
- #define __m_calloc_dma(b, s, n) m_calloc(s, n)
- #define __m_free_dma(b, p, s, n) m_free(p, s, n)
- #define __vtobus(b, p) virt_to_bus(p)
- #else
- /*
- * 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) pci_alloc_consistent(mp->bush,
- PAGE_SIZE<<MEMO_PAGE_ORDER,
- &daddr);
- 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;
- pci_free_consistent(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) {
- bzero(mp, 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 = 0;
- NCR_LOCK_DRIVER(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);
- NCR_UNLOCK_DRIVER(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;
- NCR_LOCK_DRIVER(flags);
- mp = ___get_dma_pool(bush);
- if (mp)
- __m_free(mp, m, size, name);
- if (mp && !mp->nump)
- ___del_dma_pool(mp);
- NCR_UNLOCK_DRIVER(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 = 0;
- m_addr_t a = ((m_addr_t) m) & ~MEMO_CLUSTER_MASK;
- NCR_LOCK_DRIVER(flags);
- mp = ___get_dma_pool(bush);
- if (mp) {
- vp = mp->vtob[hc];
- while (vp && (m_addr_t) vp->vaddr != a)
- vp = vp->next;
- }
- NCR_UNLOCK_DRIVER(flags);
- return vp ? vp->baddr + (((m_addr_t) m) - a) : 0;
- }
- #endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
- #define _m_calloc_dma(np, s, n) __m_calloc_dma(np->pdev, s, n)
- #define _m_free_dma(np, p, s, n) __m_free_dma(np->pdev, 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->pdev, p)
- #define vtobus(p) _vtobus(np, p)
- /*
- * Deal with DMA mapping/unmapping.
- */
- #ifndef SCSI_NCR_DYNAMIC_DMA_MAPPING
- /* Linux versions prior to pci bus iommu kernel interface */
- #define __unmap_scsi_data(pdev, cmd) do {; } while (0)
- #define __map_scsi_single_data(pdev, cmd) (__vtobus(pdev,(cmd)->request_buffer))
- #define __map_scsi_sg_data(pdev, cmd) ((cmd)->use_sg)
- #define __sync_scsi_data(pdev, cmd) do {; } while (0)
- #define scsi_sg_dma_address(sc) vtobus((sc)->address)
- #define scsi_sg_dma_len(sc) ((sc)->length)
- #else
- /* Linux version with pci bus iommu kernel interface */
- /* 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(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- switch(cmd->__data_mapped) {
- case 2:
- pci_unmap_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- break;
- case 1:
- pci_unmap_single(pdev, cmd->__data_mapping,
- cmd->request_bufflen, dma_dir);
- break;
- }
- cmd->__data_mapped = 0;
- }
- static u_long __map_scsi_single_data(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- dma_addr_t mapping;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- if (cmd->request_bufflen == 0)
- return 0;
- mapping = pci_map_single(pdev, cmd->request_buffer,
- cmd->request_bufflen, dma_dir);
- cmd->__data_mapped = 1;
- cmd->__data_mapping = mapping;
- return mapping;
- }
- static int __map_scsi_sg_data(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- int use_sg;
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- if (cmd->use_sg == 0)
- return 0;
- use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- cmd->__data_mapped = 2;
- cmd->__data_mapping = use_sg;
- return use_sg;
- }
- static void __sync_scsi_data(pcidev_t pdev, Scsi_Cmnd *cmd)
- {
- int dma_dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- switch(cmd->__data_mapped) {
- case 2:
- pci_dma_sync_sg(pdev, cmd->buffer, cmd->use_sg, dma_dir);
- break;
- case 1:
- pci_dma_sync_single(pdev, cmd->__data_mapping,
- cmd->request_bufflen, dma_dir);
- break;
- }
- }
- #define scsi_sg_dma_address(sc) sg_dma_address(sc)
- #define scsi_sg_dma_len(sc) sg_dma_len(sc)
- #endif /* SCSI_NCR_DYNAMIC_DMA_MAPPING */
- #define unmap_scsi_data(np, cmd) __unmap_scsi_data(np->pdev, cmd)
- #define map_scsi_single_data(np, cmd) __map_scsi_single_data(np->pdev, cmd)
- #define map_scsi_sg_data(np, cmd) __map_scsi_sg_data(np->pdev, cmd)
- #define sync_scsi_data(np, cmd) __sync_scsi_data(np->pdev, cmd)
- /*==========================================================
- **
- ** SCSI data transfer direction
- **
- ** Until some linux kernel version near 2.3.40,
- ** low-level scsi drivers were not told about data
- ** transfer direction. We check the existence of this
- ** feature that has been expected for a _long_ time by
- ** all SCSI driver developers by just testing against
- ** the definition of SCSI_DATA_UNKNOWN. Indeed this is
- ** a hack, but testing against a kernel version would
- ** have been a shame. ;-)
- **
- **==========================================================
- */
- #ifdef SCSI_DATA_UNKNOWN
- #define scsi_data_direction(cmd) (cmd->sc_data_direction)
- #else
- #define SCSI_DATA_UNKNOWN 0
- #define SCSI_DATA_WRITE 1
- #define SCSI_DATA_READ 2
- #define SCSI_DATA_NONE 3
- static __inline__ int scsi_data_direction(Scsi_Cmnd *cmd)
- {
- int direction;
- switch((int) cmd->cmnd[0]) {
- case 0x08: /* READ(6) 08 */
- case 0x28: /* READ(10) 28 */
- case 0xA8: /* READ(12) A8 */
- direction = SCSI_DATA_READ;
- break;
- case 0x0A: /* WRITE(6) 0A */
- case 0x2A: /* WRITE(10) 2A */
- case 0xAA: /* WRITE(12) AA */
- direction = SCSI_DATA_WRITE;
- break;
- default:
- direction = SCSI_DATA_UNKNOWN;
- break;
- }
- return direction;
- }
- #endif /* SCSI_DATA_UNKNOWN */
- /*==========================================================
- **
- ** 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)
- /*==========================================================
- **
- ** Structures used by the detection routine to transmit
- ** device configuration to the attach function.
- **
- **==========================================================
- */
- typedef struct {
- int bus;
- u_char device_fn;
- u_long base;
- u_long base_2;
- u_long io_port;
- u_long base_c;
- u_long base_2_c;
- int irq;
- /* port and reg fields to use INB, OUTB macros */
- u_long base_io;
- volatile struct ncr_reg *reg;
- } ncr_slot;
- /*==========================================================
- **
- ** Structure used to store the NVRAM content.
- **
- **==========================================================
- */
- typedef struct {
- int type;
- #define SCSI_NCR_SYMBIOS_NVRAM (1)
- #define SCSI_NCR_TEKRAM_NVRAM (2)
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- union {
- Symbios_nvram Symbios;
- Tekram_nvram Tekram;
- } data;
- #endif
- } ncr_nvram;
- /*==========================================================
- **
- ** Structure used by detection routine to save data on
- ** each detected board for attach.
- **
- **==========================================================
- */
- typedef struct {
- pcidev_t pdev;
- ncr_slot slot;
- ncr_chip chip;
- ncr_nvram *nvram;
- u_char host_id;
- #ifdef SCSI_NCR_PQS_PDS_SUPPORT
- u_char pqs_pds;
- #endif
- int attach_done;
- } ncr_device;
- static int ncr_attach (Scsi_Host_Template *tpnt, int unit, ncr_device *device);
- /*==========================================================
- **
- ** NVRAM detection and reading.
- **
- ** Currently supported:
- ** - 24C16 EEPROM with both Symbios and Tekram layout.
- ** - 93C46 EEPROM with Tekram layout.
- **
- **==========================================================
- */
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- /*
- * 24C16 EEPROM reading.
- *
- * GPOI0 - data in/data out
- * GPIO1 - clock
- * Symbios NVRAM wiring now also used by Tekram.
- */
- #define SET_BIT 0
- #define CLR_BIT 1
- #define SET_CLK 2
- #define CLR_CLK 3
- /*
- * Set/clear data/clock bit in GPIO0
- */
- static void __init
- S24C16_set_bit(ncr_slot *np, u_char write_bit, u_char *gpreg, int bit_mode)
- {
- UDELAY (5);
- switch (bit_mode){
- case SET_BIT:
- *gpreg |= write_bit;
- break;
- case CLR_BIT:
- *gpreg &= 0xfe;
- break;
- case SET_CLK:
- *gpreg |= 0x02;
- break;
- case CLR_CLK:
- *gpreg &= 0xfd;
- break;
- }
- OUTB (nc_gpreg, *gpreg);
- UDELAY (5);
- }
- /*
- * Send START condition to NVRAM to wake it up.
- */
- static void __init S24C16_start(ncr_slot *np, u_char *gpreg)
- {
- S24C16_set_bit(np, 1, gpreg, SET_BIT);
- S24C16_set_bit(np, 0, gpreg, SET_CLK);
- S24C16_set_bit(np, 0, gpreg, CLR_BIT);
- S24C16_set_bit(np, 0, gpreg, CLR_CLK);
- }
- /*
- * Send STOP condition to NVRAM - puts NVRAM to sleep... ZZzzzz!!
- */
- static void __init S24C16_stop(ncr_slot *np, u_char *gpreg)
- {
- S24C16_set_bit(np, 0, gpreg, SET_CLK);
- S24C16_set_bit(np, 1, gpreg, SET_BIT);
- }
- /*
- * Read or write a bit to the NVRAM,
- * read if GPIO0 input else write if GPIO0 output
- */
- static void __init
- S24C16_do_bit(ncr_slot *np, u_char *read_bit, u_char write_bit, u_char *gpreg)
- {
- S24C16_set_bit(np, write_bit, gpreg, SET_BIT);
- S24C16_set_bit(np, 0, gpreg, SET_CLK);
- if (read_bit)
- *read_bit = INB (nc_gpreg);
- S24C16_set_bit(np, 0, gpreg, CLR_CLK);
- S24C16_set_bit(np, 0, gpreg, CLR_BIT);
- }
- /*
- * Output an ACK to the NVRAM after reading,
- * change GPIO0 to output and when done back to an input
- */
- static void __init
- S24C16_write_ack(ncr_slot *np, u_char write_bit, u_char *gpreg, u_char *gpcntl)
- {
- OUTB (nc_gpcntl, *gpcntl & 0xfe);
- S24C16_do_bit(np, 0, write_bit, gpreg);
- OUTB (nc_gpcntl, *gpcntl);
- }
- /*
- * Input an ACK from NVRAM after writing,
- * change GPIO0 to input and when done back to an output
- */
- static void __init
- S24C16_read_ack(ncr_slot *np, u_char *read_bit, u_char *gpreg, u_char *gpcntl)
- {
- OUTB (nc_gpcntl, *gpcntl | 0x01);
- S24C16_do_bit(np, read_bit, 1, gpreg);
- OUTB (nc_gpcntl, *gpcntl);
- }
- /*
- * WRITE a byte to the NVRAM and then get an ACK to see it was accepted OK,
- * GPIO0 must already be set as an output
- */
- static void __init
- S24C16_write_byte(ncr_slot *np, u_char *ack_data, u_char write_data,
- u_char *gpreg, u_char *gpcntl)
- {
- int x;
-
- for (x = 0; x < 8; x++)
- S24C16_do_bit(np, 0, (write_data >> (7 - x)) & 0x01, gpreg);
-
- S24C16_read_ack(np, ack_data, gpreg, gpcntl);
- }
- /*
- * READ a byte from the NVRAM and then send an ACK to say we have got it,
- * GPIO0 must already be set as an input
- */
- static void __init
- S24C16_read_byte(ncr_slot *np, u_char *read_data, u_char ack_data,
- u_char *gpreg, u_char *gpcntl)
- {
- int x;
- u_char read_bit;
- *read_data = 0;
- for (x = 0; x < 8; x++) {
- S24C16_do_bit(np, &read_bit, 1, gpreg);
- *read_data |= ((read_bit & 0x01) << (7 - x));
- }
- S24C16_write_ack(np, ack_data, gpreg, gpcntl);
- }
- /*
- * Read 'len' bytes starting at 'offset'.
- */
- static int __init
- sym_read_S24C16_nvram (ncr_slot *np, int offset, u_char *data, int len)
- {
- u_char gpcntl, gpreg;
- u_char old_gpcntl, old_gpreg;
- u_char ack_data;
- int retv = 1;
- int x;
- /* save current state of GPCNTL and GPREG */
- old_gpreg = INB (nc_gpreg);
- old_gpcntl = INB (nc_gpcntl);
- gpcntl = old_gpcntl & 0x1c;
- /* set up GPREG & GPCNTL to set GPIO0 and GPIO1 in to known state */
- OUTB (nc_gpreg, old_gpreg);
- OUTB (nc_gpcntl, gpcntl);
- /* this is to set NVRAM into a known state with GPIO0/1 both low */
- gpreg = old_gpreg;
- S24C16_set_bit(np, 0, &gpreg, CLR_CLK);
- S24C16_set_bit(np, 0, &gpreg, CLR_BIT);
-
- /* now set NVRAM inactive with GPIO0/1 both high */
- S24C16_stop(np, &gpreg);
-
- /* activate NVRAM */
- S24C16_start(np, &gpreg);
- /* write device code and random address MSB */
- S24C16_write_byte(np, &ack_data,
- 0xa0 | ((offset >> 7) & 0x0e), &gpreg, &gpcntl);
- if (ack_data & 0x01)
- goto out;
- /* write random address LSB */
- S24C16_write_byte(np, &ack_data,
- offset & 0xff, &gpreg, &gpcntl);
- if (ack_data & 0x01)
- goto out;
- /* regenerate START state to set up for reading */
- S24C16_start(np, &gpreg);
-
- /* rewrite device code and address MSB with read bit set (lsb = 0x01) */
- S24C16_write_byte(np, &ack_data,
- 0xa1 | ((offset >> 7) & 0x0e), &gpreg, &gpcntl);
- if (ack_data & 0x01)
- goto out;
- /* now set up GPIO0 for inputting data */
- gpcntl |= 0x01;
- OUTB (nc_gpcntl, gpcntl);
-
- /* input all requested data - only part of total NVRAM */
- for (x = 0; x < len; x++)
- S24C16_read_byte(np, &data[x], (x == (len-1)), &gpreg, &gpcntl);
- /* finally put NVRAM back in inactive mode */
- gpcntl &= 0xfe;
- OUTB (nc_gpcntl, gpcntl);
- S24C16_stop(np, &gpreg);
- retv = 0;
- out:
- /* return GPIO0/1 to original states after having accessed NVRAM */
- OUTB (nc_gpcntl, old_gpcntl);
- OUTB (nc_gpreg, old_gpreg);
- return retv;
- }
- #undef SET_BIT
- #undef CLR_BIT
- #undef SET_CLK
- #undef CLR_CLK
- /*
- * Try reading Symbios NVRAM.
- * Return 0 if OK.
- */
- static int __init sym_read_Symbios_nvram (ncr_slot *np, Symbios_nvram *nvram)
- {
- static u_char Symbios_trailer[6] = {0xfe, 0xfe, 0, 0, 0, 0};
- u_char *data = (u_char *) nvram;
- int len = sizeof(*nvram);
- u_short csum;
- int x;
- /* probe the 24c16 and read the SYMBIOS 24c16 area */
- if (sym_read_S24C16_nvram (np, SYMBIOS_NVRAM_ADDRESS, data, len))
- return 1;
- /* check valid NVRAM signature, verify byte count and checksum */
- if (nvram->type != 0 ||
- memcmp(nvram->trailer, Symbios_trailer, 6) ||
- nvram->byte_count != len - 12)
- return 1;
- /* verify checksum */
- for (x = 6, csum = 0; x < len - 6; x++)
- csum += data[x];
- if (csum != nvram->checksum)
- return 1;
- return 0;
- }
- /*
- * 93C46 EEPROM reading.
- *
- * GPOI0 - data in
- * GPIO1 - data out
- * GPIO2 - clock
- * GPIO4 - chip select
- *
- * Used by Tekram.
- */
- /*
- * Pulse clock bit in GPIO0
- */
- static void __init T93C46_Clk(ncr_slot *np, u_char *gpreg)
- {
- OUTB (nc_gpreg, *gpreg | 0x04);
- UDELAY (2);
- OUTB (nc_gpreg, *gpreg);
- }
- /*
- * Read bit from NVRAM
- */
- static void __init T93C46_Read_Bit(ncr_slot *np, u_char *read_bit, u_char *gpreg)
- {
- UDELAY (2);
- T93C46_Clk(np, gpreg);
- *read_bit = INB (nc_gpreg);
- }
- /*
- * Write bit to GPIO0
- */
- static void __init T93C46_Write_Bit(ncr_slot *np, u_char write_bit, u_char *gpreg)
- {
- if (write_bit & 0x01)
- *gpreg |= 0x02;
- else
- *gpreg &= 0xfd;
-
- *gpreg |= 0x10;
-
- OUTB (nc_gpreg, *gpreg);
- UDELAY (2);
- T93C46_Clk(np, gpreg);
- }
- /*
- * Send STOP condition to NVRAM - puts NVRAM to sleep... ZZZzzz!!
- */
- static void __init T93C46_Stop(ncr_slot *np, u_char *gpreg)
- {
- *gpreg &= 0xef;
- OUTB (nc_gpreg, *gpreg);
- UDELAY (2);
- T93C46_Clk(np, gpreg);
- }
- /*
- * Send read command and address to NVRAM
- */
- static void __init
- T93C46_Send_Command(ncr_slot *np, u_short write_data,
- u_char *read_bit, u_char *gpreg)
- {
- int x;
- /* send 9 bits, start bit (1), command (2), address (6) */
- for (x = 0; x < 9; x++)
- T93C46_Write_Bit(np, (u_char) (write_data >> (8 - x)), gpreg);
- *read_bit = INB (nc_gpreg);
- }
- /*
- * READ 2 bytes from the NVRAM
- */
- static void __init
- T93C46_Read_Word(ncr_slot *np, u_short *nvram_data, u_char *gpreg)
- {
- int x;
- u_char read_bit;
- *nvram_data = 0;
- for (x = 0; x < 16; x++) {
- T93C46_Read_Bit(np, &read_bit, gpreg);
- if (read_bit & 0x01)
- *nvram_data |= (0x01 << (15 - x));
- else
- *nvram_data &= ~(0x01 << (15 - x));
- }
- }
- /*
- * Read Tekram NvRAM data.
- */
- static int __init
- T93C46_Read_Data(ncr_slot *np, u_short *data,int len,u_char *gpreg)
- {
- u_char read_bit;
- int x;
- for (x = 0; x < len; x++) {
- /* output read command and address */
- T93C46_Send_Command(np, 0x180 | x, &read_bit, gpreg);
- if (read_bit & 0x01)
- return 1; /* Bad */
- T93C46_Read_Word(np, &data[x], gpreg);
- T93C46_Stop(np, gpreg);
- }
- return 0;
- }
- /*
- * Try reading 93C46 Tekram NVRAM.
- */
- static int __init
- sym_read_T93C46_nvram (ncr_slot *np, Tekram_nvram *nvram)
- {
- u_char gpcntl, gpreg;
- u_char old_gpcntl, old_gpreg;
- int retv = 1;
- /* save current state of GPCNTL and GPREG */
- old_gpreg = INB (nc_gpreg);
- old_gpcntl = INB (nc_gpcntl);
- /* set up GPREG & GPCNTL to set GPIO0/1/2/4 in to known state, 0 in,
- 1/2/4 out */
- gpreg = old_gpreg & 0xe9;
- OUTB (nc_gpreg, gpreg);
- gpcntl = (old_gpcntl & 0xe9) | 0x09;
- OUTB (nc_gpcntl, gpcntl);
- /* input all of NVRAM, 64 words */
- retv = T93C46_Read_Data(np, (u_short *) nvram,
- sizeof(*nvram) / sizeof(short), &gpreg);
-
- /* return GPIO0/1/2/4 to original states after having accessed NVRAM */
- OUTB (nc_gpcntl, old_gpcntl);
- OUTB (nc_gpreg, old_gpreg);
- return retv;
- }
- /*
- * Try reading Tekram NVRAM.
- * Return 0 if OK.
- */
- static int __init
- sym_read_Tekram_nvram (ncr_slot *np, u_short device_id, Tekram_nvram *nvram)
- {
- u_char *data = (u_char *) nvram;
- int len = sizeof(*nvram);
- u_short csum;
- int x;
- switch (device_id) {
- case PCI_DEVICE_ID_NCR_53C885:
- case PCI_DEVICE_ID_NCR_53C895:
- case PCI_DEVICE_ID_NCR_53C896:
- x = sym_read_S24C16_nvram(np, TEKRAM_24C16_NVRAM_ADDRESS,
- data, len);
- break;
- case PCI_DEVICE_ID_NCR_53C875:
- x = sym_read_S24C16_nvram(np, TEKRAM_24C16_NVRAM_ADDRESS,
- data, len);
- if (!x)
- break;
- default:
- x = sym_read_T93C46_nvram(np, nvram);
- break;
- }
- if (x)
- return 1;
- /* verify checksum */
- for (x = 0, csum = 0; x < len - 1; x += 2)
- csum += data[x] + (data[x+1] << 8);
- if (csum != 0x1234)
- return 1;
- return 0;
- }
- #endif /* SCSI_NCR_NVRAM_SUPPORT */
- /*===================================================================
- **
- ** Detect and try to read SYMBIOS and TEKRAM NVRAM.
- **
- ** Data can be used to order booting of boards.
- **
- ** Data is saved in ncr_device structure if NVRAM found. This
- ** is then used to find drive boot order for ncr_attach().
- **
- ** NVRAM data is passed to Scsi_Host_Template later during
- ** ncr_attach() for any device set up.
- **
- **===================================================================
- */
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- static void __init ncr_get_nvram(ncr_device *devp, ncr_nvram *nvp)
- {
- devp->nvram = nvp;
- if (!nvp)
- return;
- /*
- ** Get access to chip IO registers
- */
- #ifdef SCSI_NCR_IOMAPPED
- request_region(devp->slot.io_port, 128, NAME53C8XX);
- devp->slot.base_io = devp->slot.io_port;
- #else
- devp->slot.reg =
- (struct ncr_reg *) remap_pci_mem(devp->slot.base_c, 128);
- if (!devp->slot.reg)
- return;
- #endif
- /*
- ** Try to read SYMBIOS nvram.
- ** Try to read TEKRAM nvram if Symbios nvram not found.
- */
- if (!sym_read_Symbios_nvram(&devp->slot, &nvp->data.Symbios))
- nvp->type = SCSI_NCR_SYMBIOS_NVRAM;
- else if (!sym_read_Tekram_nvram(&devp->slot, devp->chip.device_id,
- &nvp->data.Tekram))
- nvp->type = SCSI_NCR_TEKRAM_NVRAM;
- else {
- nvp->type = 0;
- devp->nvram = 0;
- }
- /*
- ** Release access to chip IO registers
- */
- #ifdef SCSI_NCR_IOMAPPED
- release_region(devp->slot.base_io, 128);
- #else
- unmap_pci_mem((u_long) devp->slot.reg, 128ul);
- #endif
- }
- /*===================================================================
- **
- ** Display the content of NVRAM for debugging purpose.
- **
- **===================================================================
- */
- #ifdef SCSI_NCR_DEBUG_NVRAM
- static void __init ncr_display_Symbios_nvram(Symbios_nvram *nvram)
- {
- int i;
- /* display Symbios nvram host data */
- printk(KERN_DEBUG NAME53C8XX ": HOST ID=%d%s%s%s%s%sn",
- nvram->host_id & 0x0f,
- (nvram->flags & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"",
- (nvram->flags & SYMBIOS_PARITY_ENABLE) ? " PARITY" :"",
- (nvram->flags & SYMBIOS_VERBOSE_MSGS) ? " VERBOSE" :"",
- (nvram->flags & SYMBIOS_CHS_MAPPING) ? " CHS_ALT" :"",
- (nvram->flags1 & SYMBIOS_SCAN_HI_LO) ? " HI_LO" :"");
- /* display Symbios nvram drive data */
- for (i = 0 ; i < 15 ; i++) {
- struct Symbios_target *tn = &nvram->target[i];
- printk(KERN_DEBUG NAME53C8XX
- "-%d:%s%s%s%s WIDTH=%d SYNC=%d TMO=%dn",
- i,
- (tn->flags & SYMBIOS_DISCONNECT_ENABLE) ? " DISC" : "",
- (tn->flags & SYMBIOS_SCAN_AT_BOOT_TIME) ? " SCAN_BOOT" : "",
- (tn->flags & SYMBIOS_SCAN_LUNS) ? " SCAN_LUNS" : "",
- (tn->flags & SYMBIOS_QUEUE_TAGS_ENABLED)? " TCQ" : "",
- tn->bus_width,
- tn->sync_period / 4,
- tn->timeout);
- }
- }
- static u_char Tekram_boot_delay[7] __initdata = {3, 5, 10, 20, 30, 60, 120};
- static void __init ncr_display_Tekram_nvram(Tekram_nvram *nvram)
- {
- int i, tags, boot_delay;
- char *rem;
- /* display Tekram nvram host data */
- tags = 2 << nvram->max_tags_index;
- boot_delay = 0;
- if (nvram->boot_delay_index < 6)
- boot_delay = Tekram_boot_delay[nvram->boot_delay_index];
- switch((nvram->flags & TEKRAM_REMOVABLE_FLAGS) >> 6) {
- default:
- case 0: rem = ""; break;
- case 1: rem = " REMOVABLE=boot device"; break;
- case 2: rem = " REMOVABLE=all"; break;
- }
- printk(KERN_DEBUG NAME53C8XX
- ": HOST ID=%d%s%s%s%s%s%s%s%s%s BOOT DELAY=%d tags=%dn",
- nvram->host_id & 0x0f,
- (nvram->flags1 & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"",
- (nvram->flags & TEKRAM_MORE_THAN_2_DRIVES) ? " >2DRIVES":"",
- (nvram->flags & TEKRAM_DRIVES_SUP_1GB) ? " >1GB" :"",
- (nvram->flags & TEKRAM_RESET_ON_POWER_ON) ? " RESET" :"",
- (nvram->flags & TEKRAM_ACTIVE_NEGATION) ? " ACT_NEG" :"",
- (nvram->flags & TEKRAM_IMMEDIATE_SEEK) ? " IMM_SEEK" :"",
- (nvram->flags & TEKRAM_SCAN_LUNS) ? " SCAN_LUNS" :"",
- (nvram->flags1 & TEKRAM_F2_F6_ENABLED) ? " F2_F6" :"",
- rem, boot_delay, tags);
- /* display Tekram nvram drive data */
- for (i = 0; i <= 15; i++) {
- int sync, j;
- struct Tekram_target *tn = &nvram->target[i];
- j = tn->sync_index & 0xf;
- sync = Tekram_sync[j];
- printk(KERN_DEBUG NAME53C8XX "-%d:%s%s%s%s%s%s PERIOD=%dn",
- i,
- (tn->flags & TEKRAM_PARITY_CHECK) ? " PARITY" : "",
- (tn->flags & TEKRAM_SYNC_NEGO) ? " SYNC" : "",
- (tn->flags & TEKRAM_DISCONNECT_ENABLE) ? " DISC" : "",
- (tn->flags & TEKRAM_START_CMD) ? " START" : "",
- (tn->flags & TEKRAM_TAGGED_COMMANDS) ? " TCQ" : "",
- (tn->flags & TEKRAM_WIDE_NEGO) ? " WIDE" : "",
- sync);
- }
- }
- #endif /* SCSI_NCR_DEBUG_NVRAM */
- #endif /* SCSI_NCR_NVRAM_SUPPORT */
- /*===================================================================
- **
- ** Utility routines that protperly return data through /proc FS.
- **
- **===================================================================
- */
- #ifdef SCSI_NCR_USER_INFO_SUPPORT
- struct info_str
- {
- char *buffer;
- int length;
- int offset;
- int pos;
- };
- static void copy_mem_info(struct info_str *info, char *data, int len)
- {
- if (info->pos + len > info->length)
- len = info->length - info->pos;
- if (info->pos + len < info->offset) {
- info->pos += len;
- return;
- }
- if (info->pos < info->offset) {
- data += (info->offset - info->pos);
- len -= (info->offset - info->pos);
- }
- if (len > 0) {
- memcpy(info->buffer + info->pos, data, len);
- info->pos += len;
- }
- }
- static int copy_info(struct info_str *info, char *fmt, ...)
- {
- va_list args;
- char buf[81];
- int len;
- va_start(args, fmt);
- len = vsprintf(buf, fmt, args);
- va_end(args);
- copy_mem_info(info, buf, len);
- return len;
- }
- #endif
- /*===================================================================
- **
- ** 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] = ' ';
- }
- 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' ignoredn", (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;
- }
- /*===================================================================
- **
- ** Print out information about driver configuration.
- **
- **===================================================================
- */
- static void __init ncr_print_driver_setup(void)
- {
- #define YesNo(y) y ? 'y' : 'n'
- printk (NAME53C8XX ": setup=disc:%c,specf:%d,tags:%d,sync:%d,"
- "burst:%d,wide:%c,diff:%d,revprob:%c,buschk:0x%xn",
- YesNo(driver_setup.disconnection),
- driver_setup.special_features,
- driver_setup.default_tags,
- driver_setup.default_sync,
- driver_setup.burst_max,
- YesNo(driver_setup.max_wide),
- driver_setup.diff_support,
- YesNo(driver_setup.reverse_probe),
- driver_setup.bus_check);
- printk (NAME53C8XX ": setup=mpar:%c,spar:%c,fsn=%c,verb:%d,debug:0x%x,"
- "led:%c,settle:%d,irqm:0x%x,nvram:0x%x,pcifix:0x%xn",
- YesNo(driver_setup.master_parity),
- YesNo(driver_setup.scsi_parity),
- YesNo(driver_setup.force_sync_nego),
- driver_setup.verbose,
- driver_setup.debug,
- YesNo(driver_setup.led_pin),
- driver_setup.settle_delay,
- driver_setup.irqm,
- driver_setup.use_nvram,
- driver_setup.pci_fix_up);
- #undef YesNo
- }
- /*===================================================================
- **
- ** SYM53C8XX devices description table.
- **
- **===================================================================
- */
- static ncr_chip ncr_chip_table[] __initdata = SCSI_NCR_CHIP_TABLE;
- #ifdef SCSI_NCR_PQS_PDS_SUPPORT
- /*===================================================================
- **
- ** Detect all NCR PQS/PDS boards and keep track of their bus nr.
- **
- ** The NCR PQS or PDS card is constructed as a DEC bridge
- ** behind which sit a proprietary NCR memory controller and
- ** four or two 53c875s as separate devices. In its usual mode
- ** of operation, the 875s are slaved to the memory controller
- ** for all transfers. We can tell if an 875 is part of a
- ** PQS/PDS or not since if it is, it will be on the same bus
- ** as the memory controller. To operate with the Linux
- ** driver, the memory controller is disabled and the 875s
- ** freed to function independently. The only wrinkle is that
- ** the preset SCSI ID (which may be zero) must be read in from
- ** a special configuration space register of the 875.
- **
- **===================================================================
- */
- #define SCSI_NCR_MAX_PQS_BUS 16
- static int pqs_bus[SCSI_NCR_MAX_PQS_BUS] __initdata = { 0 };
- static void __init ncr_detect_pqs_pds(void)
- {
- short index;
- pcidev_t dev = PCIDEV_NULL;
- for(index=0; index < SCSI_NCR_MAX_PQS_BUS; index++) {
- u_char tmp;
- dev = pci_find_device(0x101a, 0x0009, dev);
- if (dev == PCIDEV_NULL) {
- pqs_bus[index] = -1;
- break;
- }
- printk(KERN_INFO NAME53C8XX ": NCR PQS/PDS memory controller detected on bus %dn", PciBusNumber(dev));
- pci_read_config_byte(dev, 0x44, &tmp);
- /* bit 1: allow individual 875 configuration */
- tmp |= 0x2;
- pci_write_config_byte(dev, 0x44, tmp);
- pci_read_config_byte(dev, 0x45, &tmp);
- /* bit 2: drive individual 875 interrupts to the bus */
- tmp |= 0x4;
- pci_write_config_byte(dev, 0x45, tmp);
- pqs_bus[index] = PciBusNumber(dev);
- }
- }
- #endif /* SCSI_NCR_PQS_PDS_SUPPORT */
- /*===================================================================
- **
- ** Read and check the PCI configuration for any detected NCR
- ** boards and save data for attaching after all boards have
- ** been detected.
- **
- **===================================================================
- */
- static int __init
- sym53c8xx_pci_init(Scsi_Host_Template *tpnt, pcidev_t pdev, ncr_device *device)
- {
- u_short vendor_id, device_id, command;
- u_char cache_line_size, latency_timer;
- u_char suggested_cache_line_size = 0;
- u_char pci_fix_up = driver_setup.pci_fix_up;
- u_char revision;
- u_int irq;
- u_long base, base_c, base_2, base_2_c, io_port;
- int i;
- ncr_chip *chip;
- printk(KERN_INFO NAME53C8XX ": at PCI bus %d, device %d, function %dn",
- PciBusNumber(pdev),
- (int) (PciDeviceFn(pdev) & 0xf8) >> 3,
- (int) (PciDeviceFn(pdev) & 7));
- #ifdef SCSI_NCR_DYNAMIC_DMA_MAPPING
- if (!pci_dma_supported(pdev, 0xffffffff)) {
- printk(KERN_WARNING NAME53C8XX
- "32 BIT PCI BUS DMA ADDRESSING NOT SUPPORTEDn");
- return -1;
- }
- #endif
- /*
- ** Read info from the PCI config space.
- ** pci_read_config_xxx() functions are assumed to be used for
- ** successfully detected PCI devices.
- */
- vendor_id = PciVendorId(pdev);
- device_id = PciDeviceId(pdev);
- irq = PciIrqLine(pdev);
- i = pci_get_base_address(pdev, 0, &io_port);
- io_port = pci_get_base_cookie(pdev, 0);
- base_c = pci_get_base_cookie(pdev, i);
- i = pci_get_base_address(pdev, i, &base);
- base_2_c = pci_get_base_cookie(pdev, i);
- (void) pci_get_base_address(pdev, i, &base_2);
- pci_read_config_word(pdev, PCI_COMMAND, &command);
- pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line_size);
- pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency_timer);
- #ifdef SCSI_NCR_PQS_PDS_SUPPORT
- /*
- ** Match the BUS number for PQS/PDS devices.
- ** Read the SCSI ID from a special register mapped
- ** into the configuration space of the individual
- ** 875s. This register is set up by the PQS bios
- */
- for(i = 0; i < SCSI_NCR_MAX_PQS_BUS && pqs_bus[i] != -1; i++) {
- u_char tmp;
- if (pqs_bus[i] == PciBusNumber(pdev)) {
- pci_read_config_byte(pdev, 0x84, &tmp);
- device->pqs_pds = 1;
- device->host_id = tmp;
- break;
- }
- }
- #endif /* SCSI_NCR_PQS_PDS_SUPPORT */
- /*
- ** If user excludes this chip, donnot initialize it.
- */
- for (i = 0 ; i < SCSI_NCR_MAX_EXCLUDES ; i++) {
- if (driver_setup.excludes[i] ==
- (io_port & PCI_BASE_ADDRESS_IO_MASK))
- return -1;
- }
- /*
- ** Check if the chip is supported
- */
- if ((device_id == PCI_DEVICE_ID_LSI_53C1010) ||
- (device_id == PCI_DEVICE_ID_LSI_53C1010_66)){
- printk(NAME53C8XX ": not initializing, device not supportedn");
- return -1;
- }
- chip = 0;
- for (i = 0; i < sizeof(ncr_chip_table)/sizeof(ncr_chip_table[0]); i++) {
- if (device_id != ncr_chip_table[i].device_id)
- continue;
- if (revision > ncr_chip_table[i].revision_id)
- continue;
- chip = &device->chip;
- memcpy(chip, &ncr_chip_table[i], sizeof(*chip));
- chip->revision_id = revision;
- break;
- }
- /*
- ** Ignore Symbios chips controlled by SISL RAID controller.
- ** This controller sets value 0x52414944 at RAM end - 16.
- */
- #if defined(__i386__) && !defined(SCSI_NCR_PCI_MEM_NOT_SUPPORTED)
- if (chip && (base_2_c & PCI_BASE_ADDRESS_MEM_MASK)) {
- unsigned int ram_size, ram_val;
- u_long ram_ptr;
- if (chip->features & FE_RAM8K)
- ram_size = 8192;
- else
- ram_size = 4096;
- ram_ptr = remap_pci_mem(base_2_c & PCI_BASE_ADDRESS_MEM_MASK,
- ram_size);
- if (ram_ptr) {
- ram_val = readl_raw(ram_ptr + ram_size - 16);
- unmap_pci_mem(ram_ptr, ram_size);
- if (ram_val == 0x52414944) {
- printk(NAME53C8XX": not initializing, "
- "driven by SISL RAID controller.n");
- return -1;
- }
- }
- }
- #endif /* i386 and PCI MEMORY accessible */
- if (!chip) {
- printk(NAME53C8XX ": not initializing, device not supportedn");
- return -1;
- }
- #ifdef __powerpc__
- /*
- ** Fix-up for power/pc.
- ** Should not be performed by the driver.
- */
- if ((command & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY))
- != (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
- printk(NAME53C8XX ": setting%s%s...n",
- (command & PCI_COMMAND_IO) ? "" : " PCI_COMMAND_IO",
- (command & PCI_COMMAND_MEMORY) ? "" : " PCI_COMMAND_MEMORY");
- command |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,2,0)
- if ( is_prep ) {
- if (io_port >= 0x10000000) {
- printk(NAME53C8XX ": reallocating io_port (Wacky IBM)");
- io_port = (io_port & 0x00FFFFFF) | 0x01000000;
- pci_write_config_dword(pdev,
- PCI_BASE_ADDRESS_0, io_port);
- }
- if (base >= 0x10000000) {
- printk(NAME53C8XX ": reallocating base (Wacky IBM)");
- base = (base & 0x00FFFFFF) | 0x01000000;
- pci_write_config_dword(pdev,
- PCI_BASE_ADDRESS_1, base);
- }
- if (base_2 >= 0x10000000) {
- printk(NAME53C8XX ": reallocating base2 (Wacky IBM)");
- base_2 = (base_2 & 0x00FFFFFF) | 0x01000000;
- pci_write_config_dword(pdev,
- PCI_BASE_ADDRESS_2, base_2);
- }
- }
- #endif
- #endif /* __powerpc__ */
- #if defined(__i386__) && !defined(MODULE)
- if (!cache_line_size) {
- #if LINUX_VERSION_CODE < LinuxVersionCode(2,1,75)
- extern char x86;
- switch(x86) {
- #else
- switch(boot_cpu_data.x86) {
- #endif
- case 4: suggested_cache_line_size = 4; break;
- case 6:
- case 5: suggested_cache_line_size = 8; break;
- }
- }
- #endif /* __i386__ */
- /*
- ** Check availability of IO space, memory space.
- ** Enable master capability if not yet.
- **
- ** We shouldn't have to care about the IO region when
- ** we are using MMIO. But calling check_region() from
- ** both the ncr53c8xx and the sym53c8xx drivers prevents
- ** from attaching devices from the both drivers.
- ** If you have a better idea, let me know.
- */
- /* #ifdef SCSI_NCR_IOMAPPED */
- #if 1
- if (!(command & PCI_COMMAND_IO)) {
- printk(NAME53C8XX ": I/O base address (0x%lx) disabled.n",
- (long) io_port);
- io_port = 0;
- }
- #endif
- if (!(command & PCI_COMMAND_MEMORY)) {
- printk(NAME53C8XX ": PCI_COMMAND_MEMORY not set.n");
- base = 0;
- base_2 = 0;
- }
- io_port &= PCI_BASE_ADDRESS_IO_MASK;
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- base_2 &= PCI_BASE_ADDRESS_MEM_MASK;
- /* #ifdef SCSI_NCR_IOMAPPED */
- #if 1
- if (io_port && check_region (io_port, 128)) {
- printk(NAME53C8XX ": IO region 0x%lx[0..127] is in usen",
- (long) io_port);
- io_port = 0;
- }
- if (!io_port)
- return -1;
- #endif
- #ifndef SCSI_NCR_IOMAPPED
- if (!base) {
- printk(NAME53C8XX ": MMIO base address disabled.n");
- return -1;
- }
- #endif
- /* The ncr53c8xx driver never did set the PCI parity bit. */
- /* Since setting this bit is known to trigger spurious MDPE */
- /* errors on some 895 controllers when noise on power lines is */
- /* too high, I donnot want to change previous ncr53c8xx driver */
- /* behaviour on that point (the sym53c8xx driver set this bit). */
- #if 0
- /*
- ** Set MASTER capable and PARITY bit, if not yet.
- */
- if ((command & (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY))
- != (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY)) {
- printk(NAME53C8XX ": setting%s%s...(fix-up)n",
- (command & PCI_COMMAND_MASTER) ? "" : " PCI_COMMAND_MASTER",
- (command & PCI_COMMAND_PARITY) ? "" : " PCI_COMMAND_PARITY");
- command |= (PCI_COMMAND_MASTER | PCI_COMMAND_PARITY);
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
- #else
- /*
- ** Set MASTER capable if not yet.
- */
- if ((command & PCI_COMMAND_MASTER) != PCI_COMMAND_MASTER) {
- printk(NAME53C8XX ": setting PCI_COMMAND_MASTER...(fix-up)n");
- command |= PCI_COMMAND_MASTER;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
- #endif
- /*
- ** Fix some features according to driver setup.
- */
- if (!(driver_setup.special_features & 1))
- chip->features &= ~FE_SPECIAL_SET;
- else {
- if (driver_setup.special_features & 2)
- chip->features &= ~FE_WRIE;
- if (driver_setup.special_features & 4)
- chip->features &= ~FE_NOPM;
- }
- /*
- ** Some features are required to be enabled in order to
- ** work around some chip problems. :) ;)
- ** (ITEM 12 of a DEL about the 896 I haven't yet).
- ** We must ensure the chip will use WRITE AND INVALIDATE.
- ** The revision number limit is for now arbitrary.
- */
- if (device_id == PCI_DEVICE_ID_NCR_53C896 && revision <= 0x10) {
- chip->features |= (FE_WRIE | FE_CLSE);
- pci_fix_up |= 3; /* Force appropriate PCI fix-up */
- }
- #ifdef SCSI_NCR_PCI_FIX_UP_SUPPORT
- /*
- ** Try to fix up PCI config according to wished features.
- */
- if ((pci_fix_up & 1) && (chip->features & FE_CLSE) &&
- !cache_line_size && suggested_cache_line_size) {
- cache_line_size = suggested_cache_line_size;
- pci_write_config_byte(pdev,
- PCI_CACHE_LINE_SIZE, cache_line_size);
- printk(NAME53C8XX ": PCI_CACHE_LINE_SIZE set to %d (fix-up).n",
- cache_line_size);
- }
- if ((pci_fix_up & 2) && cache_line_size &&
- (chip->features & FE_WRIE) && !(command & PCI_COMMAND_INVALIDATE)) {
- printk(NAME53C8XX": setting PCI_COMMAND_INVALIDATE (fix-up)n");
- command |= PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND, command);
- }
- /*
- ** Tune PCI LATENCY TIMER according to burst max length transfer.
- ** (latency timer >= burst length + 6, we add 10 to be quite sure)
- */
- if (chip->burst_max && (latency_timer == 0 || (pci_fix_up & 4))) {
- u_char lt = (1 << chip->burst_max) + 6 + 10;
- if (latency_timer < lt) {
- printk(NAME53C8XX
- ": changing PCI_LATENCY_TIMER from %d to %d.n",
- (int) latency_timer, (int) lt);
- latency_timer = lt;
- pci_write_config_byte(pdev,
- PCI_LATENCY_TIMER, latency_timer);
- }
- }
- #endif /* SCSI_NCR_PCI_FIX_UP_SUPPORT */
- /*
- ** Initialise ncr_device structure with items required by ncr_attach.
- */
- device->pdev = pdev;
- device->slot.bus = PciBusNumber(pdev);
- device->slot.device_fn = PciDeviceFn(pdev);
- device->slot.base = base;
- device->slot.base_2 = base_2;
- device->slot.base_c = base_c;
- device->slot.base_2_c = base_2_c;
- device->slot.io_port = io_port;
- device->slot.irq = irq;
- device->attach_done = 0;
- return 0;
- }
- /*===================================================================
- **
- ** Detect all 53c8xx hosts and then attach them.
- **
- ** If we are using NVRAM, once all hosts are detected, we need to
- ** check any NVRAM for boot order in case detect and boot order
- ** differ and attach them using the order in the NVRAM.
- **
- ** If no NVRAM is found or data appears invalid attach boards in
- ** the the order they are detected.
- **
- **===================================================================
- */
- static int __init
- sym53c8xx__detect(Scsi_Host_Template *tpnt, u_short ncr_chip_ids[], int chips)
- {
- pcidev_t pcidev;
- int i, j, hosts, count;
- int attach_count = 0;
- ncr_device *devtbl, *devp;
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- ncr_nvram nvram0, nvram, *nvp;
- #endif
- /*
- ** PCI is required.
- */
- if (!pci_present())
- return 0;
- #ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
- ncr_debug = driver_setup.debug;
- #endif
- if (initverbose >= 2)
- ncr_print_driver_setup();
- /*
- ** Allocate the device table since we donnot want to
- ** overflow the kernel stack.
- ** 1 x 4K PAGE is enough for more than 40 devices for i386.
- */
- devtbl = m_calloc(PAGE_SIZE, "devtbl");
- if (!devtbl)
- return 0;
- /*
- ** Detect all NCR PQS/PDS memory controllers.
- */
- #ifdef SCSI_NCR_PQS_PDS_SUPPORT
- ncr_detect_pqs_pds();
- #endif
- /*
- ** Detect all 53c8xx hosts.
- ** Save the first Symbios NVRAM content if any
- ** for the boot order.
- */
- hosts = PAGE_SIZE / sizeof(*devtbl);
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- nvp = (driver_setup.use_nvram & 0x1) ? &nvram0 : 0;
- #endif
- j = 0;
- count = 0;
- pcidev = PCIDEV_NULL;
- while (1) {
- char *msg = "";
- if (count >= hosts)
- break;
- if (j >= chips)
- break;
- i = driver_setup.reverse_probe ? chips - 1 - j : j;
- pcidev = pci_find_device(PCI_VENDOR_ID_NCR, ncr_chip_ids[i],
- pcidev);
- if (pcidev == PCIDEV_NULL) {
- ++j;
- continue;
- }
- if (pci_enable_device(pcidev)) /* @!*!$&*!%-*#;! */
- continue;
- /* Some HW as the HP LH4 may report twice PCI devices */
- for (i = 0; i < count ; i++) {
- if (devtbl[i].slot.bus == PciBusNumber(pcidev) &&
- devtbl[i].slot.device_fn == PciDeviceFn(pcidev))
- break;
- }
- if (i != count) /* Ignore this device if we already have it */
- continue;
- devp = &devtbl[count];
- devp->host_id = driver_setup.host_id;
- devp->attach_done = 0;
- if (sym53c8xx_pci_init(tpnt, pcidev, devp)) {
- continue;
- }
- ++count;
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- if (nvp) {
- ncr_get_nvram(devp, nvp);
- switch(nvp->type) {
- case SCSI_NCR_SYMBIOS_NVRAM:
- /*
- * Switch to the other nvram buffer, so that
- * nvram0 will contain the first Symbios
- * format NVRAM content with boot order.
- */
- nvp = &nvram;
- msg = "with Symbios NVRAM";
- break;
- case SCSI_NCR_TEKRAM_NVRAM:
- msg = "with Tekram NVRAM";
- break;
- }
- }
- #endif
- #ifdef SCSI_NCR_PQS_PDS_SUPPORT
- if (devp->pqs_pds)
- msg = "(NCR PQS/PDS)";
- #endif
- printk(KERN_INFO NAME53C8XX ": 53c%s detected %sn",
- devp->chip.name, msg);
- }
- /*
- ** If we have found a SYMBIOS NVRAM, use first the NVRAM boot
- ** sequence as device boot order.
- ** check devices in the boot record against devices detected.
- ** attach devices if we find a match. boot table records that
- ** do not match any detected devices will be ignored.
- ** devices that do not match any boot table will not be attached
- ** here but will attempt to be attached during the device table
- ** rescan.
- */
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- if (!nvp || nvram0.type != SCSI_NCR_SYMBIOS_NVRAM)
- goto next;
- for (i = 0; i < 4; i++) {
- Symbios_host *h = &nvram0.data.Symbios.host[i];
- for (j = 0 ; j < count ; j++) {
- devp = &devtbl[j];
- if (h->device_fn != devp->slot.device_fn ||
- h->bus_nr != devp->slot.bus ||
- h->device_id != devp->chip.device_id)
- continue;
- if (devp->attach_done)
- continue;
- if (h->flags & SYMBIOS_INIT_SCAN_AT_BOOT) {
- ncr_get_nvram(devp, nvp);
- if (!ncr_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- #if 0 /* Restore previous behaviour of ncr53c8xx driver */
- else if (!(driver_setup.use_nvram & 0x80))
- printk(KERN_INFO NAME53C8XX
- ": 53c%s state OFF thus not attachedn",
- devp->chip.name);
- #endif
- else
- continue;
- devp->attach_done = 1;
- break;
- }
- }
- next:
- #endif
- /*
- ** Rescan device list to make sure all boards attached.
- ** Devices without boot records will not be attached yet
- ** so try to attach them here.
- */
- for (i= 0; i < count; i++) {
- devp = &devtbl[i];
- if (!devp->attach_done) {
- #ifdef SCSI_NCR_NVRAM_SUPPORT
- ncr_get_nvram(devp, nvp);
- #endif
- if (!ncr_attach (tpnt, attach_count, devp))
- attach_count++;
- }
- }
- m_free(devtbl, PAGE_SIZE, "devtbl");
- return attach_count;
- }