patch-2.1.37 linux/drivers/scsi/ncr53c8xx.c
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- Lines: 3309
- Date:
Mon May 12 20:45:35 1997
- Orig file:
v2.1.36/linux/drivers/scsi/ncr53c8xx.c
- Orig date:
Wed Apr 23 19:01:22 1997
diff -u --recursive --new-file v2.1.36/linux/drivers/scsi/ncr53c8xx.c linux/drivers/scsi/ncr53c8xx.c
@@ -40,7 +40,7 @@
*/
/*
-** 16 April 1997, version 1.18e
+** 9 May 1997, version 2.1b
**
** Supported SCSI-II features:
** Synchronous negotiation
@@ -56,7 +56,7 @@
** 53C820 (Wide, NCR BIOS in flash bios required)
** 53C825 (Wide, ~53C820 with on board rom BIOS)
** 53C860 (Narrow fast 20, BIOS required)
-** 53C875 (Wide fast 40 with on board rom BIOS)
+** 53C875 (Wide fast 20 with on board rom BIOS)
** 53C895 (Ultra2 80 MB/s with on board rom BIOS)
**
** Other features:
@@ -65,7 +65,6 @@
** Shared IRQ (since linux-1.3.72)
*/
-#define SCSI_NCR_DEBUG
#define SCSI_NCR_DEBUG_FLAGS (0)
#define NCR_DATE "pl24 96/12/14"
@@ -111,6 +110,17 @@
#include "../block/blk.h"
#endif
+#if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,35)
+#include <linux/init.h>
+#else
+#ifndef __initdata
+#define __initdata
+#endif
+#ifndef __initfunc
+#define __initfunc(__arginit) __arginit
+#endif
+#endif
+
#include "scsi.h"
#include "hosts.h"
#include "constants.h"
@@ -133,15 +143,6 @@
*/
/*
-** Proc info and user command support
-*/
-
-#ifdef SCSI_NCR_PROC_INFO_SUPPORT
-#define SCSI_NCR_PROFILE
-#define SCSI_NCR_USER_COMMAND
-#endif
-
-/*
** SCSI address of this device.
** The boot routines should have set it.
** If not, use this.
@@ -212,8 +213,6 @@
#if defined(SCSI_NCR_IOMAPPED)
#define NCR_IOMAPPED
-#else
-#define NCR_MEMORYMAPPED
#endif
/*
@@ -292,6 +291,7 @@
return (vm_offset_t) (page_remapped ? (page_remapped + page_offs) : 0UL);
}
+
static inline void unmap_pci_mem(vm_offset_t vaddr, u_long size)
{
if (vaddr)
@@ -422,6 +422,8 @@
** Head of list of NCR boards
**
** Host is retrieved by its irq level.
+** If interrupts are shared, the internal host control block
+** address (struct ncb) is used as device id.
*/
static struct Scsi_Host *first_host = NULL;
@@ -470,6 +472,7 @@
unsigned ultra_scsi : 2;
unsigned force_sync_nego: 1;
unsigned reverse_probe: 1;
+ unsigned pci_fix_up: 2;
u_char verbose;
u_char default_tags;
u_short default_sync;
@@ -482,8 +485,13 @@
u_char irqm;
};
-static struct ncr_driver_setup driver_setup = SCSI_NCR_DRIVER_SETUP;
-static struct ncr_driver_setup driver_safe_setup= SCSI_NCR_DRIVER_SAFE_SETUP;
+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
/*
** Other Linux definitions
@@ -531,7 +539,7 @@
** Can be changed at runtime too.
*/
-#ifdef SCSI_NCR_DEBUG
+#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
#define DEBUG_FLAGS ncr_debug
#else
#define DEBUG_FLAGS SCSI_NCR_DEBUG_FLAGS
@@ -569,37 +577,37 @@
*/
/*
-** IO mapped input / ouput
+** IO mapped only input / ouput
*/
-#define IOM_INB(r) inb (np->port + offsetof(struct ncr_reg, r))
-#define IOM_INB_OFF(o) inb (np->port + (o))
-#define IOM_INW(r) inw (np->port + offsetof(struct ncr_reg, r))
-#define IOM_INL(r) inl (np->port + offsetof(struct ncr_reg, r))
-#define IOM_INL_OFF(o) inl (np->port + (o))
-
-#define IOM_OUTB(r, val) outb ((val), np->port+offsetof(struct ncr_reg,r))
-#define IOM_OUTW(r, val) outw ((val), np->port+offsetof(struct ncr_reg,r))
-#define IOM_OUTL(r, val) outl ((val), np->port+offsetof(struct ncr_reg,r))
-#define IOM_OUTL_OFF(o, val) outl ((val), np->port + (o))
+#define IOM_INB(r) inb (np->port + offsetof(struct ncr_reg, r))
+#define IOM_INB_OFF(o) inb (np->port + (o))
+#define IOM_INW(r) inw (np->port + offsetof(struct ncr_reg, r))
+#define IOM_INL(r) inl (np->port + offsetof(struct ncr_reg, r))
+#define IOM_INL_OFF(o) inl (np->port + (o))
+
+#define IOM_OUTB(r, val) outb ((val), np->port+offsetof(struct ncr_reg,r))
+#define IOM_OUTW(r, val) outw ((val), np->port+offsetof(struct ncr_reg,r))
+#define IOM_OUTL(r, val) outl ((val), np->port+offsetof(struct ncr_reg,r))
+#define IOM_OUTL_OFF(o, val) outl ((val), np->port + (o))
/*
** MEMORY mapped IO input / output
*/
-#define MMIO_INB(r) readb(&np->reg->r)
-#define MMIO_INB_OFF(o) readb((char *)np->reg + (o))
-#define MMIO_INW(r) readw(&np->reg->r)
-#define MMIO_INL(r) readl(&np->reg->r)
-#define MMIO_INL_OFF(o) readl((char *)np->reg + (o))
-
-#define MMIO_OUTB(r, val) writeb((val), &np->reg->r)
-#define MMIO_OUTW(r, val) writew((val), &np->reg->r)
-#define MMIO_OUTL(r, val) writel((val), &np->reg->r)
-#define MMIO_OUTL_OFF(o, val) writel((val), (char *)np->reg + (o))
+#define MMIO_INB(r) readb(&np->reg->r)
+#define MMIO_INB_OFF(o) readb((char *)np->reg + (o))
+#define MMIO_INW(r) readw(&np->reg->r)
+#define MMIO_INL(r) readl(&np->reg->r)
+#define MMIO_INL_OFF(o) readl((char *)np->reg + (o))
+
+#define MMIO_OUTB(r, val) writeb((val), &np->reg->r)
+#define MMIO_OUTW(r, val) writew((val), &np->reg->r)
+#define MMIO_OUTL(r, val) writel((val), &np->reg->r)
+#define MMIO_OUTL_OFF(o, val) writel((val), (char *)np->reg + (o))
/*
-** IO mapped only input / output
+** IO mapped input / output
*/
#if defined(NCR_IOMAPPED)
@@ -619,7 +627,7 @@
** MEMORY mapped only input / output
*/
-#elif defined(NCR_MEMORYMAPPED)
+#else
#define INB(r) MMIO_INB(r)
#define INB_OFF(o) MMIO_INB_OFF(o)
@@ -632,23 +640,6 @@
#define OUTL(r, val) MMIO_OUTL(r, val)
#define OUTL_OFF(o, val) MMIO_OUTL_OFF(o, val)
-/*
-** IO mapped or MEMORY mapped
-*/
-
-#else
-
-#define INB(r) (np->reg ? MMIO_INB(r) : IOM_INB(r))
-#define INB_OFF(o) (np->reg ? MMIO_INB_OFF(o) : IOM_INB_OFF(o))
-#define INW(r) (np->reg ? MMIO_INW(r) : IOM_INW(r))
-#define INL(r) (np->reg ? MMIO_INL(r) : IOM_INL(r))
-#define INL_OFF(o) (np->reg ? MMIO_INL_OFF(o) : IOM_INL_OFF(o))
-
-#define OUTB(r, val) (np->reg ? MMIO_OUTB(r, val) : IOM_OUTB(r, val))
-#define OUTW(r, val) (np->reg ? MMIO_OUTW(r, val) : IOM_OUTW(r, val))
-#define OUTL(r, val) (np->reg ? MMIO_OUTL(r, val) : IOM_OUTL(r, val))
-#define OUTL_OFF(o, val) (np->reg ? MMIO_OUTL_OFF(o, val) : IOM_OUTL_OFF(o, val))
-
#endif
/*
@@ -657,6 +648,10 @@
#define OUTONB(r, m) OUTB(r, INB(r) | (m))
#define OUTOFFB(r, m) OUTB(r, INB(r) & ~(m))
+#define OUTONW(r, m) OUTW(r, INW(r) | (m))
+#define OUTOFFW(r, m) OUTW(r, INW(r) & ~(m))
+#define OUTONL(r, m) OUTL(r, INL(r) | (m))
+#define OUTOFFL(r, m) OUTL(r, INL(r) & ~(m))
/*==========================================================
**
@@ -700,7 +695,8 @@
#define SIR_IGN_RESIDUE (11)
#define SIR_MISSING_SAVE (12)
#define SIR_DATA_IO_IS_OUT (13)
-#define SIR_MAX (13)
+#define SIR_DATA_IO_IS_IN (14)
+#define SIR_MAX (14)
/*==========================================================
**
@@ -798,6 +794,10 @@
#define UC_SETFLAG 15
#define UC_CLEARPROF 16
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+#define UC_DEBUG_ERROR_RECOVERY 17
+#endif
+
#define UF_TRACE (0x01)
#define UF_NODISC (0x02)
@@ -813,7 +813,6 @@
u_long end;
u_long select;
u_long command;
- u_long data;
u_long status;
u_long disconnect;
u_long reselect;
@@ -1340,13 +1339,20 @@
**-----------------------------------------------
*/
int unit; /* Unit number */
- int chip; /* Chip number */
+ char chip_name[8]; /* Chip name */
+ char inst_name[16]; /* Instance name */
+ u_int features; /* Chip features map */
struct timer_list timer; /* Timer link header */
int ncr_cache; /* Cache test variable */
Scsi_Cmnd *waiting_list; /* Waiting list header for commands */
/* that we can't put into the squeue */
u_long settle_time; /* Reset in progess */
u_char release_stage; /* Synchronisation stage on release */
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ u_char debug_error_recovery;
+ u_char stalling;
+ u_char assert_atn;
+#endif
/*-----------------------------------------------
** Added field to support differences
@@ -1359,9 +1365,6 @@
*/
u_short device_id;
u_char revision_id;
-#define ChipDevice ((np)->device_id)
-#define ChipVersion ((np)->revision_id & 0xf0)
-
u_char sv_scntl3;
u_char sv_dmode;
u_char sv_dcntl;
@@ -1370,6 +1373,7 @@
u_char sv_ctest5;
u_char sv_gpcntl;
u_char sv_stest2;
+ u_char sv_stest4;
u_char rv_dmode;
u_char rv_dcntl;
@@ -1377,6 +1381,9 @@
u_char rv_ctest4;
u_char rv_ctest5;
u_char rv_stest2;
+
+ u_char maxburst;
+ u_char scsi_mode;
u_char multiplier;
/*-----------------------------------------------
@@ -1616,8 +1623,8 @@
ncrcmd resel_tmp [ 5];
ncrcmd resel_lun [ 18];
ncrcmd resel_tag [ 24];
- ncrcmd data_io [ 2]; /* MUST be just before data_in */
- ncrcmd data_in [MAX_SCATTER * 4 + 7];
+ ncrcmd data_io [ 6];
+ ncrcmd data_in [MAX_SCATTER * 4 + 4];
};
/*
@@ -1642,7 +1649,7 @@
ncrcmd getcc2 [ 14];
#endif
ncrcmd getcc3 [ 10];
- ncrcmd data_out [MAX_SCATTER * 4 + 7];
+ ncrcmd data_out [MAX_SCATTER * 4 + 4];
ncrcmd aborttag [ 4];
ncrcmd abort [ 22];
ncrcmd snooptest [ 9];
@@ -1664,10 +1671,10 @@
static void ncr_free_ccb (ncb_p np, ccb_p cp, u_long t, u_long l);
static void ncr_getclock (ncb_p np, int mult);
static void ncr_selectclock (ncb_p np, u_char scntl3);
-static void ncr_save_bios_setting (ncb_p np);
static ccb_p ncr_get_ccb (ncb_p np, u_long t,u_long l);
static void ncr_init (ncb_p np, char * msg, u_long code);
-static int ncr_intr (ncb_p np);
+static int ncr_int_sbmc (ncb_p np);
+static int ncr_int_par (ncb_p np);
static void ncr_int_ma (ncb_p np);
static void ncr_int_sir (ncb_p np);
static void ncr_int_sto (ncb_p np);
@@ -1675,7 +1682,7 @@
static void ncr_negotiate (struct ncb* np, struct tcb* tp);
static void ncr_opennings (ncb_p np, lcb_p lp, Scsi_Cmnd * xp);
-#ifdef SCSI_NCR_PROFILE
+#ifdef SCSI_NCR_PROFILE_SUPPORT
static void ncb_profile (ncb_p np, ccb_p cp);
#endif
@@ -1694,12 +1701,12 @@
static void ncr_wakeup (ncb_p np, u_long code);
static void ncr_start_reset (ncb_p np, int settle_delay);
-#ifdef SCSI_NCR_USER_COMMAND
+#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
static void ncr_usercmd (ncb_p np);
#endif
-static int ncr_attach (Scsi_Host_Template *tpnt, int unit, u_short device_id,
- u_char revision_id, int chip, u_int base, u_int io_port,
+static int ncr_attach (Scsi_Host_Template *tpnt, int unit,
+ ncr_chip *chip, u_int base, u_int io_port,
int irq, int bus, u_char device_fn);
static void insert_into_waiting_list(ncb_p np, Scsi_Cmnd *cmd);
@@ -1720,24 +1727,13 @@
**==========================================================
*/
-#ifdef SCSI_NCR_DEBUG
+#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
static int ncr_debug = SCSI_NCR_DEBUG_FLAGS;
#endif
-/*==========================================================
-**
-**
-** Global static data: auto configure
-**
-**
-**==========================================================
-*/
-
-static char *ncr_name (ncb_p np)
+static inline char *ncr_name (ncb_p np)
{
- static char name[16];
- sprintf(name, "ncr53c%d-%d", np->chip, np->unit);
- return (name);
+ return np->inst_name;
}
@@ -1783,10 +1779,10 @@
* Kernel variables referenced in the scripts.
* THESE MUST ALL BE ALIGNED TO A 4-BYTE BOUNDARY.
*/
-static void *script_kvars[] =
+static void *script_kvars[] __initdata =
{ (void *)&jiffies };
-static struct script script0 = {
+static struct script script0 __initdata = {
/*--------------------------< START >-----------------------*/ {
/*
** Claim to be still alive ...
@@ -1881,7 +1877,7 @@
** patch the launch field.
** should look like an idle process.
*/
- SCR_COPY (4),
+ SCR_COPY_F (4),
RADDR (dsa),
PADDR (skip2),
SCR_COPY (8),
@@ -1987,7 +1983,7 @@
** We patch the address part of a
** COPY command with the DSA-register.
*/
- SCR_COPY (4),
+ SCR_COPY_F (4),
RADDR (dsa),
PADDR (loadpos),
/*
@@ -2376,7 +2372,7 @@
/*
** and copy back the header to the ccb.
*/
- SCR_COPY (4),
+ SCR_COPY_F (4),
RADDR (dsa),
PADDR (cleanup0),
SCR_COPY (sizeof (struct head)),
@@ -2482,7 +2478,7 @@
**
** CAUTION: only little endian architectures supported! XXX
*/
- SCR_COPY (1),
+ SCR_COPY_F (1),
NADDR (header.savep),
PADDR (disconnect0),
}/*-------------------------< DISCONNECT0 >--------------*/,{
@@ -2491,7 +2487,7 @@
/*
** neither this
*/
- SCR_COPY (1),
+ SCR_COPY_F (1),
NADDR (header.goalp),
PADDR (disconnect1),
}/*-------------------------< DISCONNECT1 >--------------*/,{
@@ -2587,7 +2583,7 @@
** This NOP will be patched with LED OFF
** SCR_REG_REG (gpreg, SCR_OR, 0x01)
*/
- SCR_JUMP ^ IFFALSE (0),
+ SCR_NO_OP,
0,
/*
** make the DSA invalid.
@@ -2609,7 +2605,7 @@
** This NOP will be patched with LED ON
** SCR_REG_REG (gpreg, SCR_AND, 0xfe)
*/
- SCR_JUMP ^ IFFALSE (0),
+ SCR_NO_OP,
0,
/*
** ... zu nichts zu gebrauchen ?
@@ -2635,7 +2631,7 @@
** This NOP will be patched with LED ON
** SCR_REG_REG (gpreg, SCR_AND, 0xfe)
*/
- SCR_JUMP ^ IFFALSE (0),
+ SCR_NO_OP,
0,
/*
** If it's not connected :(
@@ -2758,10 +2754,14 @@
** to low-level scsi drivers, we must trust the target
** for actual data direction when we cannot guess it.
** The programmed interrupt patches savep, lastp, goalp,
-** etc.., and restarts the scsi script at data_out.
+** etc.., and restarts the scsi script at data_out/in.
*/
SCR_INT ^ IFTRUE (WHEN (SCR_DATA_OUT)),
SIR_DATA_IO_IS_OUT,
+ SCR_INT ^ IFTRUE (WHEN (SCR_DATA_IN)),
+ SIR_DATA_IO_IS_IN,
+ SCR_JUMP,
+ PADDR (no_data),
}/*-------------------------< DATA_IN >--------------------*/,{
/*
@@ -2769,15 +2769,7 @@
** #define MAX_SCATTER parameter,
** it is filled in at runtime.
**
-** SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
-** PADDR (no_data),
-** SCR_COPY (sizeof (u_long)),
-** KVAR(SCRIPT_KVAR_JIFFIES),
-** NADDR (header.stamp.data),
-** SCR_MOVE_TBL ^ SCR_DATA_IN,
-** offsetof (struct dsb, data[ 0]),
-**
-** ##===========< i=1; i<MAX_SCATTER >=========
+** ##===========< i=0; i<MAX_SCATTER >=========
** || SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_IN)),
** || PADDR (checkatn),
** || SCR_MOVE_TBL ^ SCR_DATA_IN,
@@ -2793,7 +2785,7 @@
}/*--------------------------------------------------------*/
};
-static struct scripth scripth0 = {
+static struct scripth scripth0 __initdata = {
/*-------------------------< TRYLOOP >---------------------*/{
/*
** Load an entry of the start queue into dsa
@@ -3109,7 +3101,7 @@
** We patch the address part of a COPY command
** with the address of the dsa register ...
*/
- SCR_COPY (4),
+ SCR_COPY_F (4),
RADDR (dsa),
PADDRH (getcc1),
/*
@@ -3247,15 +3239,7 @@
** #define MAX_SCATTER parameter,
** it is filled in at runtime.
**
-** SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_OUT)),
-** PADDR (no_data),
-** SCR_COPY (sizeof (u_long)),
-** KVAR(SCRIPT_KVAR_JIFFIES),
-** NADDR (header.stamp.data),
-** SCR_MOVE_TBL ^ SCR_DATA_OUT,
-** offsetof (struct dsb, data[ 0]),
-**
-** ##===========< i=1; i<MAX_SCATTER >=========
+** ##===========< i=0; i<MAX_SCATTER >=========
** || SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_OUT)),
** || PADDR (dispatch),
** || SCR_MOVE_TBL ^ SCR_DATA_OUT,
@@ -3269,7 +3253,7 @@
**
**---------------------------------------------------------
*/
-0 /* was (u_long)&ident ? */
+0
}/*-------------------------< ABORTTAG >-------------------*/,{
/*
** Abort a bad reselection.
@@ -3343,7 +3327,9 @@
**==========================================================
*/
+__initfunc(
void ncr_script_fill (struct script * scr, struct scripth * scrh)
+)
{
int i;
ncrcmd *p;
@@ -3363,15 +3349,7 @@
p = scr->data_in;
- *p++ =SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN));
- *p++ =PADDR (no_data);
- *p++ =SCR_COPY (sizeof (u_long));
- *p++ =KVAR(SCRIPT_KVAR_JIFFIES);
- *p++ =NADDR (header.stamp.data);
- *p++ =SCR_MOVE_TBL ^ SCR_DATA_IN;
- *p++ =offsetof (struct dsb, data[ 0]);
-
- for (i=1; i<MAX_SCATTER; i++) {
+ for (i=0; i<MAX_SCATTER; i++) {
*p++ =SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_IN));
*p++ =PADDR (checkatn);
*p++ =SCR_MOVE_TBL ^ SCR_DATA_IN;
@@ -3387,15 +3365,7 @@
p = scrh->data_out;
- *p++ =SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_OUT));
- *p++ =PADDR (no_data);
- *p++ =SCR_COPY (sizeof (u_long));
- *p++ =KVAR(SCRIPT_KVAR_JIFFIES);
- *p++ =NADDR (header.stamp.data);
- *p++ =SCR_MOVE_TBL ^ SCR_DATA_OUT;
- *p++ =offsetof (struct dsb, data[ 0]);
-
- for (i=1; i<MAX_SCATTER; i++) {
+ for (i=0; i<MAX_SCATTER; i++) {
*p++ =SCR_CALL ^ IFFALSE (WHEN (SCR_DATA_OUT));
*p++ =PADDR (dispatch);
*p++ =SCR_MOVE_TBL ^ SCR_DATA_OUT;
@@ -3419,11 +3389,14 @@
**==========================================================
*/
+__initfunc(
static void ncr_script_copy_and_bind (ncb_p np, ncrcmd *src, ncrcmd *dst, int len)
+)
{
ncrcmd opcode, new, old, tmp1, tmp2;
ncrcmd *start, *end;
int relocs;
+ int opchanged = 0;
start = src;
end = src + len/4;
@@ -3470,6 +3443,14 @@
ncr_name(np), (int) (src-start-1));
DELAY (1000000);
}
+ /*
+ ** If PREFETCH feature not enabled, remove
+ ** the NO FLUSH bit if present.
+ */
+ if ((opcode & SCR_NO_FLUSH) && !(np->features & _F_PFEN)) {
+ dst[-1] = (opcode & ~SCR_NO_FLUSH);
+ ++opchanged;
+ }
break;
case 0x0:
@@ -3546,6 +3527,9 @@
*dst++ = *src++;
};
+ if (bootverbose > 1 && opchanged)
+ printf("%s: NO FLUSH bit removed from %d script instructions\n",
+ ncr_name(np), opchanged);
}
/*==========================================================
@@ -3595,6 +3579,218 @@
if (np) PRINT_LUN(np, cmd->target, cmd->lun);
}
+/*===============================================================
+**
+** Prepare io register values used by ncr_init() according
+** to selected and supported features.
+**
+** NCR chips allow burst lengths of 2, 4, 8, 16, 32, 64, 128
+** transfers. 32,64,128 are only supported by 875 and 895 chips.
+** We use log base 2 (burst length) as internal code, with
+** value 0 meaning "burst disabled".
+**
+**===============================================================
+*/
+
+/*
+ * Burst length from burst code.
+ */
+#define burst_length(bc) (!(bc))? 0 : 1 << (bc)
+
+/*
+ * Burst code from io register bits.
+ */
+#define burst_code(dmode, ctest4, ctest5) \
+ (ctest4) & 0x80? 0 : (((dmode) & 0xc0) >> 6) + ((ctest5) & 0x04) + 1
+
+/*
+ * Set initial io register bits from burst code.
+ */
+static inline void ncr_init_burst(ncb_p np, u_char bc)
+{
+ np->rv_ctest4 &= ~0x80;
+ np->rv_dmode &= ~(0x3 << 6);
+ np->rv_ctest5 &= ~0x4;
+
+ if (!bc) {
+ np->rv_ctest4 |= 0x80;
+ }
+ else {
+ --bc;
+ np->rv_dmode |= ((bc & 0x3) << 6);
+ np->rv_ctest5 |= (bc & 0x4);
+ }
+}
+
+__initfunc(
+static int ncr_prepare_setting(ncb_p np)
+)
+{
+ u_char burst_max;
+
+ /*
+ ** Save assumed BIOS setting
+ */
+
+ np->sv_scntl3 = INB(nc_scntl3) & 0x07;
+ np->sv_dmode = INB(nc_dmode) & 0xce;
+ np->sv_dcntl = INB(nc_dcntl) & 0xa8;
+ np->sv_ctest3 = INB(nc_ctest3) & 0x01;
+ np->sv_ctest4 = INB(nc_ctest4) & 0x80;
+ np->sv_ctest5 = INB(nc_ctest5) & 0x24;
+ np->sv_gpcntl = INB(nc_gpcntl);
+ np->sv_stest2 = INB(nc_stest2) & 0x20;
+ np->sv_stest4 = INB(nc_stest4);
+
+ /*
+ ** Get the frequency of the chip's clock.
+ ** Find the right value for scntl3.
+ */
+
+ if (np->features & _F_QUAD)
+ np->multiplier = 4;
+ else if (np->features & _F_DBLR)
+ np->multiplier = 2;
+ else
+ np->multiplier = 1;
+
+ np->clock_khz = (np->features & _F_CLK80)? 80000 : 40000;
+ np->clock_khz *= np->multiplier;
+
+ if (np->clock_khz != 40000)
+ ncr_getclock(np, np->multiplier);
+
+ if (np->clock_khz <= 25000) np->rv_scntl3 = 0x01;
+ else if (np->clock_khz <= 37500) np->rv_scntl3 = 0x02;
+ else if (np->clock_khz <= 50000) np->rv_scntl3 = 0x03;
+ else if (np->clock_khz <= 75000) np->rv_scntl3 = 0x04;
+ else if (np->clock_khz <= 100000) np->rv_scntl3 = 0x05;
+ else if (np->clock_khz <= 150000) np->rv_scntl3 = 0x06;
+ else np->rv_scntl3 = 0x07;
+
+ /*
+ ** Get on-board RAM bus address when supported
+ */
+ if (np->features & _F_RAM) {
+ OUTONB(nc_ctest2, 0x8);
+ np->paddr2 = INL(nc_scr0);
+ OUTOFFB(nc_ctest2, 0x8);
+ }
+
+ /*
+ ** Prepare initial value of other IO registers
+ */
+#if defined SCSI_NCR_TRUST_BIOS_SETTING
+ np->rv_dmode = np->sv_dmode;
+ np->rv_dcntl = np->sv_dcntl;
+ np->rv_ctest3 = np->sv_ctest3;
+ np->rv_ctest4 = np->sv_ctest4;
+ np->rv_ctest5 = np->sv_ctest5;
+ burst_max = burst_code(np->sv_dmode, np->sv_ctest4, np->sv_ctest5);
+#else
+ np->rv_dmode = 0;
+ np->rv_dcntl = 0;
+ np->rv_ctest3 = 0;
+ np->rv_ctest4 = 0;
+ np->rv_ctest5 = 0;
+ np->rv_stest2 = 0;
+
+ /*
+ ** Select burst length (dwords)
+ */
+ burst_max = driver_setup.burst_max;
+ if (burst_max == 255)
+ burst_max = burst_code(np->sv_dmode, np->sv_ctest4, np->sv_ctest5);
+ if (burst_max > 7)
+ burst_max = 7;
+ if (burst_max > np->maxburst)
+ burst_max = np->maxburst;
+
+ /*
+ ** Select all supported special features
+ */
+ if (np->features & _F_ERL)
+ np->rv_dmode |= ERL; /* Enable Read Line */
+ if (np->features & _F_BOF)
+ np->rv_dmode |= BOF; /* Burst Opcode Fetch */
+ if (np->features & _F_ERMP)
+ np->rv_dmode |= ERMP; /* Enable Read Multiple */
+ if (np->features & _F_PFEN)
+ np->rv_dcntl |= PFEN; /* Prefetch Enable */
+ if (np->features & _F_CLSE)
+ np->rv_dcntl |= CLSE; /* Cache Line Size Enable */
+ if (np->features & _F_WRIE)
+ np->rv_ctest3 |= WRIE; /* Write and Invalidate */
+ if (np->features & _F_DFS)
+ np->rv_ctest5 |= DFS; /* Dma Fifo Size */
+
+ /*
+ ** Select some other
+ */
+ if (driver_setup.master_parity)
+ np->rv_ctest4 |= MPEE; /* Master parity checking */
+
+#endif /* SCSI_NCR_TRUST_BIOS_SETTING */
+
+ /*
+ * Prepare initial io register bits for burst length
+ */
+ ncr_init_burst(np, burst_max);
+
+ /*
+ ** Set differential mode.
+ */
+ switch(driver_setup.diff_support) {
+ case 3:
+ if (INB(nc_gpreg) & 0x08)
+ break;
+ case 2:
+ np->rv_stest2 |= 0x20;
+ break;
+ case 1:
+ np->rv_stest2 |= (np->sv_stest2 & 0x20);
+ break;
+ default:
+ break;
+ }
+
+ /*
+ ** Set irq mode.
+ */
+ switch(driver_setup.irqm) {
+ case 2:
+ np->rv_dcntl |= IRQM;
+ break;
+ case 1:
+ np->rv_stest2 |= (np->sv_dcntl & IRQM);
+ break;
+ default:
+ break;
+ }
+
+ /*
+ ** Announce all that stuff to user.
+ */
+ if (bootverbose > 1) {
+ printf ("%s: initial value of SCNTL3 = %02x, final = %02x\n",
+ ncr_name(np), np->sv_scntl3, np->rv_scntl3);
+ printf ("%s: initial value of dmode/dcntl/ctest3/4/5 = (hex) %02x/%02x/%02x/%02x/%02x\n",
+ ncr_name(np), np->sv_dmode, np->sv_dcntl, np->sv_ctest3, np->sv_ctest4, np->sv_ctest5);
+ printf ("%s: final value of dmode/dcntl/ctest3/4/5 = (hex) %02x/%02x/%02x/%02x/%02x\n",
+ ncr_name(np), np->rv_dmode, np->rv_dcntl, np->rv_ctest3, np->rv_ctest4, np->rv_ctest5);
+ if (np->rv_stest2 & 0x20)
+ printf ("%s: DIFF mode set\n", ncr_name(np));
+ }
+
+ if (bootverbose && np->paddr2)
+ printf ("%s: on-board RAM at 0x%lx\n", ncr_name(np), np->paddr2);
+
+ if (bootverbose && np->ns_sync < 25)
+ printf ("%s: Ultra%s SCSI support enabled\n", ncr_name(np),
+ np->ns_sync < 12 ? "-2": "");
+
+ return 0;
+}
/*
** Host attach and initialisations.
@@ -3602,25 +3798,23 @@
** Allocate host data and ncb structure.
** Request IO region and remap MMIO region.
** Do chip initialization.
-** Try with mmio.
-** If mmio not possible (misconfigured cache),
-** retry with io mapped.
** If all is OK, install interrupt handling and
** start the timer daemon.
*/
-static int ncr_attach (Scsi_Host_Template *tpnt, int unit, ushort device_id,
- u_char revision_id, int chip, u_int base, u_int io_port,
+__initfunc(
+static int ncr_attach (Scsi_Host_Template *tpnt, int unit,
+ ncr_chip *chip, u_int base, u_int io_port,
int irq, int bus, u_char device_fn)
-
+)
{
struct host_data *host_data;
ncb_p np;
struct Scsi_Host *instance = 0;
u_long flags = 0;
-printf("ncr53c8xx: unit=%d chip=%d rev=0x%x base=0x%x, io_port=0x%x, irq=%d\n",
- unit, chip, revision_id, base, io_port, irq);
+printf("ncr53c8xx: unit=%d chip=%s rev=0x%x base=0x%x, io_port=0x%x, irq=%d\n",
+ unit, chip->name, chip->revision_id, base, io_port, irq);
/*
** Allocate host_data structure
@@ -3645,10 +3839,21 @@
np->ccb = (ccb_p) (((u_long) &host_data->_ccb_data) & CCB_ALIGN_MASK);
bzero (np->ccb, sizeof (*np->ccb));
- np->unit = unit;
- np->chip = chip;
- np->device_id = device_id;
- np->revision_id = revision_id;
+ /*
+ ** Store input informations in the host data structure.
+ */
+ strncpy(np->chip_name, chip->name, sizeof(np->chip_name) - 1);
+ np->unit = unit;
+ sprintf(np->inst_name, "ncr53c%s-%d", np->chip_name, np->unit);
+ np->device_id = chip->device_id;
+ np->revision_id = chip->revision_id;
+ np->features = chip->features;
+ np->maxwide = (np->features & _F_WIDE)? 1 : 0;
+ np->ns_sync = 25;
+ np->clock_khz = 40000;
+ np->clock_divn = chip->nr_divisor;
+ np->maxoffs = chip->offset_max;
+ np->maxburst = chip->burst_max;
np->script0 =
(struct script *) (((u_long) &host_data->script_data) & SCR_ALIGN_MASK);
@@ -3673,9 +3878,7 @@
np->vaddr = remap_pci_mem((u_long) base, (u_long) 128);
if (!np->vaddr) {
printf("%s: can't map memory mapped IO region\n", ncr_name(np));
-#ifdef NCR_MEMORYMAPPED
goto attach_error;
-#endif
}
else
if (bootverbose > 1)
@@ -3699,97 +3902,16 @@
np->port = io_port;
/*
- ** Save initial value of some io registers.
- */
-
- ncr_save_bios_setting(np);
-
- /*
** Do chip dependent initialization.
*/
-
- np->maxwide = 0;
- np->rv_scntl3 = 0x13; /* default: 40MHz clock */
- np->ns_sync = 25;
- np->clock_khz = 40000;
- np->clock_divn = 4;
- np->maxoffs = 8;
- np->multiplier = 1;
-
- /*
- ** Get the frequency of the chip's clock.
- ** Find the right value for scntl3.
- */
-
- switch (device_id) {
- case PCI_DEVICE_ID_NCR_53C825:
- np->maxwide = 1;
- break;
- case PCI_DEVICE_ID_NCR_53C860:
- if (driver_setup.ultra_scsi) {
- np->rv_scntl3 = 0x15;
- np->clock_khz = 80000;
- np->ns_sync = 12;
- }
- else
- np->rv_scntl3 = 0x35; /* always assume 80MHz clock for 860 */
- np->clock_divn = 5;
- break;
- case PCI_DEVICE_ID_NCR_53C875:
- case PCI_DEVICE_ID_NCR_53C885:
- np->maxwide = 1;
- if (driver_setup.special_features)
- np->maxoffs = 16;
- np->clock_divn = 5;
- if (device_id == PCI_DEVICE_ID_NCR_53C875)
- ncr_getclock(np, revision_id >= 2 ? 2 : 1);
- else
- ncr_getclock(np, 2);
- break;
- case PCI_DEVICE_ID_NCR_53C895:
- case PCI_DEVICE_ID_NCR_53C896:
- np->maxwide = 1;
- if (driver_setup.special_features)
- np->maxoffs = 31;
- np->clock_divn = 7;
- ncr_getclock(np, 4);
- break;
- }
-
- /*
- ** Get on-board RAM bus address when supported
- */
- switch (device_id) {
- case PCI_DEVICE_ID_NCR_53C825:
- if (revision_id < 0x10)
- break;
- case PCI_DEVICE_ID_NCR_53C875:
- case PCI_DEVICE_ID_NCR_53C885:
- case PCI_DEVICE_ID_NCR_53C895:
- case PCI_DEVICE_ID_NCR_53C896:
- if (driver_setup.special_features) {
- OUTONB(nc_ctest2, 0x8);
- np->paddr2 = INL(nc_scr0);
- OUTOFFB(nc_ctest2, 0x8);
- }
- break;
- }
-
- if (bootverbose && np->paddr2)
- printf ("%s: on-board RAM at 0x%lx\n", ncr_name(np), np->paddr2);
-
- if (bootverbose && np->ns_sync < 25)
- printf ("%s: Ultra%s SCSI support enabled\n", ncr_name(np),
- np->ns_sync < 12 ? "-2": "");
+ (void)ncr_prepare_setting(np);
#ifndef NCR_IOMAPPED
if (np->paddr2 && sizeof(struct script) <= 4096) {
np->vaddr2 = remap_pci_mem((u_long) np->paddr2, (u_long) 4096);
if (!np->vaddr2) {
printf("%s: can't map memory mapped IO region\n", ncr_name(np));
-#ifdef NCR_MEMORYMAPPED
goto attach_error;
-#endif
}
else
if (bootverbose > 1)
@@ -3831,16 +3953,23 @@
np->ccb->p_ccb = vtophys (np->ccb);
/*
- ** init data structure
+ ** Patch the script for LED support.
+ */
+
+ if (driver_setup.led_pin & (~np->sv_gpcntl) & 0x01) {
+ np->features |= _F_LED0;
+ np->script0->reselect[0] = SCR_REG_REG(gpreg, SCR_OR, 0x01);
+ np->script0->reselect1[0] = SCR_REG_REG(gpreg, SCR_AND, 0xfe);
+ np->script0->reselect2[0] = SCR_REG_REG(gpreg, SCR_AND, 0xfe);
+ }
+
+ /*
+ ** init data structure
*/
np->jump_tcb.l_cmd = SCR_JUMP;
np->jump_tcb.l_paddr = NCB_SCRIPTH_PHYS (np, abort);
-#if !defined(NCR_IOMAPPED) && !defined(NCR_MEMORYMAPPED)
-retry_chip_init:
-#endif
-
/*
** Get SCSI addr of host adapter (set by bios?).
*/
@@ -3864,14 +3993,6 @@
*/
if (ncr_snooptest (np)) {
-#if !defined(NCR_IOMAPPED) && !defined(NCR_MEMORYMAPPED)
- if (np->reg) {
-printf("%s: cache misconfigured, retrying with IO mapped at 0x%lx\n",
- ncr_name(np), (u_long) np->port);
- np->reg = 0;
- goto retry_chip_init;
- }
-#endif
printf ("CACHE INCORRECTLY CONFIGURED.\n");
goto attach_error;
};
@@ -3962,18 +4083,25 @@
attach_error:
if (!instance) return -1;
+ printf("%s: detaching...\n", ncr_name(np));
#ifndef NCR_IOMAPPED
if (np->vaddr) {
+#ifdef DEBUG_NCR53C8XX
printf("%s: releasing memory mapped IO region %lx[%d]\n", ncr_name(np), (u_long) np->vaddr, 128);
+#endif
unmap_pci_mem((vm_offset_t) np->vaddr, (u_long) 128);
}
if (np->vaddr2) {
+#ifdef DEBUG_NCR53C8XX
printf("%s: releasing memory mapped IO region %lx[%d]\n", ncr_name(np), (u_long) np->vaddr2, 4096);
+#endif
unmap_pci_mem((vm_offset_t) np->vaddr2, (u_long) 4096);
}
#endif
if (np->port) {
+#ifdef DEBUG_NCR53C8XX
printf("%s: releasing IO region %x[%d]\n", ncr_name(np), np->port, 128);
+#endif
release_region(np->port, 128);
}
scsi_unregister(instance);
@@ -3984,47 +4112,6 @@
/*==========================================================
**
**
-** Process pending device interrupts.
-**
-**
-**==========================================================
-*/
-int ncr_intr(np)
- ncb_p np;
-{
- int n = 0;
- u_long flags;
-
- save_flags(flags); cli();
-
- if (DEBUG_FLAGS & DEBUG_TINY) printf ("[");
-
-#ifdef SCSI_NCR_PARANOIA
- if (INB(nc_istat) & (INTF|SIP|DIP)) {
- /*
- ** Repeat until no outstanding ints
- */
- do {
-#endif
- ncr_exception (np);
-#ifdef SCSI_NCR_PARANOIA
- } while (INB(nc_istat) & (INTF|SIP|DIP));
-
- n=1;
- np->ticks = 5 * HZ;
- };
-#endif
-
- if (DEBUG_FLAGS & DEBUG_TINY) printf ("]\n");
-
- restore_flags(flags);
-
- return (n);
-}
-
-/*==========================================================
-**
-**
** Start execution of a SCSI command.
** This is called from the generic SCSI driver.
**
@@ -4107,7 +4194,7 @@
**
**----------------------------------------------------
*/
-#ifdef SCSI_NCR_PROFILE
+#ifdef SCSI_NCR_PROFILE_SUPPORT
bzero (&cp->phys.header.stamp, sizeof (struct tstamp));
cp->phys.header.stamp.start = jiffies;
#endif
@@ -4337,25 +4424,30 @@
*/
cp->segments = segments;
+ if (!cp->data_len)
+ xfer_direction = XferNone;
switch (xfer_direction) {
+ u_long endp;
default:
case XferBoth:
- cp->phys.header.savep = NCB_SCRIPT_PHYS (np, data_io);
- cp->phys.header.goalp = cp->phys.header.savep +8 +20 +segments*16;
- break;
+ cp->phys.header.savep = NCB_SCRIPT_PHYS (np, data_io);
+ cp->phys.header.goalp = cp->phys.header.savep;
+ break;
case XferIn:
- cp->phys.header.savep = NCB_SCRIPT_PHYS (np, data_in);
- cp->phys.header.goalp = cp->phys.header.savep +20 +segments*16;
- break;
+ endp = NCB_SCRIPT_PHYS (np, data_in) + MAX_SCATTER*16;
+ cp->phys.header.goalp = endp + 8;
+ cp->phys.header.savep = endp - segments*16;
+ break;
case XferOut:
- cp->phys.header.savep = NCB_SCRIPTH_PHYS (np, data_out);
- cp->phys.header.goalp = cp->phys.header.savep +20 +segments*16;
- break;
+ endp = NCB_SCRIPTH_PHYS (np, data_out) + MAX_SCATTER*16;
+ cp->phys.header.goalp = endp + 8;
+ cp->phys.header.savep = endp - segments*16;
+ break;
case XferNone:
- cp->phys.header.savep = NCB_SCRIPT_PHYS (np, no_data);
- cp->phys.header.goalp = cp->phys.header.savep;
- break;
+ cp->phys.header.savep = NCB_SCRIPT_PHYS (np, no_data);
+ cp->phys.header.goalp = cp->phys.header.savep;
+ break;
}
cp->phys.header.lastp = cp->phys.header.savep;
@@ -4463,6 +4555,9 @@
** Script processor may be waiting for reselect.
** Wake it up.
*/
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if (!np->stalling)
+#endif
OUTB (nc_istat, SIGP);
/*
@@ -4530,6 +4625,11 @@
u_long flags;
int found;
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if (np->stalling)
+ np->stalling = 0;
+#endif
+
save_flags(flags); cli();
/*
* Return immediately if reset is in progress.
@@ -4607,6 +4707,11 @@
int found;
int retv;
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if (np->stalling == 2)
+ np->stalling = 0;
+#endif
+
save_flags(flags); cli();
/*
* First, look for the scsi command in the waiting list
@@ -4663,6 +4768,9 @@
** processor will sleep on SEL_WAIT_RESEL.
** Let's wake it up, since it may have to work.
*/
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if (!np->stalling)
+#endif
OUTB (nc_istat, SIGP);
restore_flags(flags);
@@ -4697,7 +4805,7 @@
** Set release_stage to 1 and wait that ncr_timeout() set it to 2.
*/
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: stopping the timer\n", ncr_name(np));
#endif
np->release_stage = 1;
@@ -4710,7 +4818,7 @@
** Disable chip interrupts
*/
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: disabling chip interrupts\n", ncr_name(np));
#endif
OUTW (nc_sien , 0);
@@ -4720,7 +4828,7 @@
** Free irq
*/
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: freeing irq %d\n", ncr_name(np), irq);
#endif
#if LINUX_VERSION_CODE >= LinuxVersionCode(1,3,70)
@@ -4758,17 +4866,17 @@
*/
#ifndef NCR_IOMAPPED
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: releasing memory mapped IO region %lx[%d]\n", ncr_name(np), (u_long) np->vaddr, 128);
#endif
unmap_pci_mem((vm_offset_t) np->vaddr, (u_long) 128);
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: releasing memory mapped IO region %lx[%d]\n", ncr_name(np), (u_long) np->vaddr2, 4096);
#endif
unmap_pci_mem((vm_offset_t) np->vaddr2, (u_long) 4096);
#endif
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: releasing IO region %x[%d]\n", ncr_name(np), np->port, 128);
#endif
release_region(np->port, 128);
@@ -4783,7 +4891,7 @@
printf("%s: shall free an active ccb (host_status=%d)\n",
ncr_name(np), cp->host_status);
}
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: freeing ccb (%lx)\n", ncr_name(np), (u_long) cp);
#endif
m_free(cp, sizeof(*cp));
@@ -4798,7 +4906,7 @@
for (lun = 0 ; lun < MAX_LUN ; lun++) {
lp = tp->lp[lun];
if (lp) {
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("%s: freeing lp (%lx)\n", ncr_name(np), (u_long) lp);
#endif
m_free(lp, sizeof(*lp));
@@ -4851,7 +4959,7 @@
** timestamp
** Optional, spare some CPU time
*/
-#ifdef SCSI_NCR_PROFILE
+#ifdef SCSI_NCR_PROFILE_SUPPORT
ncb_profile (np, cp);
#endif
@@ -5158,46 +5266,6 @@
};
}
-/*===============================================================
-**
-** NCR chips allow burst lengths of 2, 4, 8, 16, 32, 64, 128
-** transfers. 32,64,128 are only supported by 875 and 895 chips.
-** We use log base 2 (burst length) as internal code, with
-** value 0 meaning "burst disabled".
-**
-**===============================================================
-*/
-
-/*
- * Burst length from burst code.
- */
-#define burst_length(bc) (!(bc))? 0 : 1 << (bc)
-
-/*
- * Burst code from io register bits.
- */
-#define burst_code(dmode, ctest4, ctest5) \
- (ctest4) & 0x80? 0 : (((dmode) & 0xc0) >> 6) + ((ctest5) & 0x04) + 1
-
-/*
- * Set initial io register bits from burst code.
- */
-static void ncr_init_burst(ncb_p np, u_char bc)
-{
- np->rv_ctest4 &= ~0x80;
- np->rv_dmode &= ~(0x3 << 6);
- np->rv_ctest5 &= ~0x4;
-
- if (!bc) {
- np->rv_ctest4 |= 0x80;
- }
- else {
- --bc;
- np->rv_dmode |= ((bc & 0x3) << 6);
- np->rv_ctest5 |= (bc & 0x4);
- }
-}
-
/*==========================================================
**
**
@@ -5212,7 +5280,6 @@
int i;
u_long usrsync;
u_char usrwide;
- u_char burst_max;
/*
** Reset chip.
@@ -5236,7 +5303,6 @@
/*
** Start at first entry.
*/
-
np->squeueput = 0;
np->script0->startpos[0] = NCB_SCRIPTH_PHYS (np, tryloop);
np->script0->start0 [0] = SCR_INT ^ IFFALSE (0);
@@ -5249,161 +5315,30 @@
/*
** Init chip.
*/
-#if defined SCSI_NCR_TRUST_BIOS_SETTING
- np->rv_dmode = np->sv_dmode;
- np->rv_dcntl = np->sv_dcntl;
- np->rv_ctest3 = np->sv_ctest3;
- np->rv_ctest4 = np->sv_ctest4;
- np->rv_ctest5 = np->sv_ctest5;
- burst_max = burst_code(np->sv_dmode, np->sv_ctest4, np->sv_ctest5);
-#else
- np->rv_dmode = 0;
- np->rv_dcntl = 0;
- np->rv_ctest3 = 0;
- np->rv_ctest4 = 0;
- burst_max = driver_setup.burst_max;
- if (burst_max == 255)
- burst_max = burst_code(np->sv_dmode, np->sv_ctest4, np->sv_ctest5);
- if (burst_max > 7)
- burst_max = 7;
-
-/** NCR53C810 **/
- if (ChipDevice == PCI_DEVICE_ID_NCR_53C810 && ChipVersion == 0) {
- burst_max = burst_max < 4 ? burst_max : 4;
- if (driver_setup.special_features)
- np->rv_dmode = ERL; /* read line */
- }
- else
-/** NCR53C815 **/
- if (ChipDevice == PCI_DEVICE_ID_NCR_53C815) {
- burst_max = burst_max < 4 ? burst_max : 4;
- if (driver_setup.special_features)
- np->rv_dmode = BOF | ERL; /* burst opcode fetch, read line */
- }
- else
-/** NCR53C825 **/
- if (ChipDevice == PCI_DEVICE_ID_NCR_53C825 && ChipVersion == 0) {
- burst_max = burst_max < 4 ? burst_max : 4;
- if (driver_setup.special_features)
- np->rv_dmode = BOF | ERL; /* burst opcode fetch, read line */
- }
- else
-/** NCR53C810A or NCR53C860 **/
- if ((ChipDevice == PCI_DEVICE_ID_NCR_53C810 && ChipVersion >= 0x10) ||
- ChipDevice == PCI_DEVICE_ID_NCR_53C860) {
- burst_max = burst_max < 4 ? burst_max : 4;
- if (driver_setup.special_features) {
- np->rv_dmode = BOF | ERMP | ERL;
- /* burst op-code fetch, read multiple */
- /* read line */
- np->rv_dcntl = PFEN | CLSE;
- /* prefetch, cache line size */
- np->rv_ctest3 = WRIE; /* write and invalidate */
- }
- }
- else
-/** NCR53C825A or NCR53C875 or NCR53C885 or NCR53C895 or NCR53C896 **/
- if ((ChipDevice == PCI_DEVICE_ID_NCR_53C825 && ChipVersion >= 0x10) ||
- ChipDevice == PCI_DEVICE_ID_NCR_53C875 ||
- ChipDevice == PCI_DEVICE_ID_NCR_53C885 ||
- ChipDevice == PCI_DEVICE_ID_NCR_53C895 ||
- ChipDevice == PCI_DEVICE_ID_NCR_53C896) {
- if (!driver_setup.special_features)
- burst_max = burst_max < 4 ? burst_max : 4;
- else {
- burst_max = burst_max < 7 ? burst_max : 7;
- np->rv_dmode = BOF | ERMP | ERL;
- /* burst op-code fetch, read multiple */
- /* read line, burst 128 (ctest5&4) */
- np->rv_dcntl = PFEN | CLSE;
- /* prefetch, cache line size */
- np->rv_ctest3 = WRIE; /* write and invalidate */
- np->rv_ctest5 = DFS; /* large dma fifo (0x20) */
- }
- }
-/** OTHERS **/
- else {
- burst_max = burst_max < 4 ? burst_max : 4;
- }
-#endif /* SCSI_NCR_TRUST_BIOS_SETTING */
-
- /*
- * Prepare initial io register bits for burst length
- */
- ncr_init_burst(np, burst_max);
-
- /*
- ** Set differential mode.
- */
- switch(driver_setup.diff_support) {
- case 3:
- if (INB(nc_gpreg) & 0x08)
- break;
- case 2:
- np->rv_stest2 |= 0x20;
- break;
- case 1:
- np->rv_stest2 |= (np->sv_stest2 & 0x20);
- break;
- default:
- break;
- }
- /*
- ** Set irq mode.
- */
- switch(driver_setup.irqm) {
- case 2:
- np->rv_dcntl |= IRQM;
- break;
- case 1:
- np->rv_stest2 |= (np->sv_dcntl & IRQM);
- break;
- default:
- break;
- }
-
- if (bootverbose > 1) {
- printf ("%s: initial value of dmode/dcntl/ctest3/4/5 = (hex) %02x/%02x/%02x/%02x/%02x\n",
- ncr_name(np), np->sv_dmode, np->sv_dcntl, np->sv_ctest3, np->sv_ctest4, np->sv_ctest5);
- }
- if (bootverbose > 1) {
- printf ("%s: final value of dmode/dcntl/ctest3/4/5 = (hex) %02x/%02x/%02x/%02x/%02x\n",
- ncr_name(np), np->rv_dmode, np->rv_dcntl, np->rv_ctest3, np->rv_ctest4, np->rv_ctest5);
- if (np->rv_stest2 & 0x20)
- printf ("%s: setting up differential mode\n", ncr_name(np));
- }
-
- OUTB (nc_istat, 0x00 ); /* Remove Reset, abort ... */
+ OUTB (nc_istat, 0x00 ); /* Remove Reset, abort */
if (driver_setup.scsi_parity)
- OUTB (nc_scntl0, 0xca ); /* full arb., ena parity, par->ATN */
+ OUTB (nc_scntl0, 0xca); /* full arb., ena parity, par->ATN */
else
- OUTB (nc_scntl0, 0xc0 ); /* full arb., (no parity) */
-
- OUTB (nc_scntl1, 0x00 ); /* odd parity, and remove CRST!! */
+ OUTB (nc_scntl0, 0xc0); /* full arb., (no parity) */
- ncr_selectclock(np, np->rv_scntl3);
+ OUTB (nc_scntl1, 0x00); /* odd parity, and remove CRST!! */
- OUTB (nc_scid , RRE|np->myaddr);/* host adapter SCSI address */
- OUTW (nc_respid, 1ul<<np->myaddr);/* id to respond to */
- OUTB (nc_istat , SIGP ); /* Signal Process */
- OUTB (nc_dmode , np->rv_dmode); /* Burst length = 2 .. 16 transfers */
+ ncr_selectclock(np, np->rv_scntl3); /* Select SCSI clock */
- if (driver_setup.special_features && np->rv_ctest5)
- OUTB (nc_ctest5, np->rv_ctest5); /* large fifo + large burst */
+ OUTB (nc_scid , RRE|np->myaddr); /* Adapter SCSI address */
+ OUTW (nc_respid, 1ul<<np->myaddr); /* Id to respond to */
+ OUTB (nc_istat , SIGP ); /* Signal Process */
+ OUTB (nc_dmode , np->rv_dmode); /* Burst length, dma mode */
+ OUTB (nc_ctest5, np->rv_ctest5); /* Large fifo + large burst */
- OUTB (nc_dcntl , NOCOM|np->rv_dcntl);/* no single step mode, protect SFBR*/
- OUTB (nc_ctest3, np->rv_ctest3); /* write and invalidate */
-
- if (driver_setup.master_parity)
- OUTB (nc_ctest4, MPEE|np->rv_ctest4); /* enable master parity checking */
- else
- OUTB (nc_ctest4, 0x00|np->rv_ctest4); /* disable master parity checking */
+ OUTB (nc_dcntl , NOCOM|np->rv_dcntl); /* Protect SFBR */
+ OUTB (nc_ctest3, np->rv_ctest3); /* Write and invalidate */
+ OUTB (nc_ctest4, np->rv_ctest4); /* Master parity checking */
- OUTB (nc_stest2, EXT|np->rv_stest2); /* Extended Sreq/Sack filtering */
- OUTB (nc_stest3, TE ); /* TolerANT enable */
- OUTB (nc_stime0, 0x0d ); /* HTH = disable STO = 0.4 sec. */
- /* 0.25 sec recommended for scsi 1 */
+ OUTB (nc_stest2, EXT|np->rv_stest2); /* Extended Sreq/Sack filtering */
+ OUTB (nc_stest3, TE); /* TolerANT enable */
+ OUTB (nc_stime0, 0x0d ); /* HTH disabled STO 0.4 sec. */
/*
** Reinitialize usrsync.
@@ -5436,31 +5371,11 @@
np->disc = 0;
/*
- ** Fill in target structure.
+ ** Enable GPIO0 pin for writing if LED support.
*/
- for (i=0;i<MAX_TARGET;i++) {
- tcb_p tp = &np->target[i];
-
- tp->sval = 0;
- tp->wval = np->rv_scntl3;
-
- tp->usrsync = usrsync;
- tp->usrwide = usrwide;
-
- ncr_negotiate (np, tp);
- }
-
- /*
- ** Enable GPIO0 pin for writing.
- ** Patch the script for LED support.
- */
-
- if (driver_setup.led_pin & (~np->sv_gpcntl) & 0x01) {
+ if (np->features & _F_LED0) {
OUTOFFB (nc_gpcntl, 0x01);
- np->script0->reselect[0] = SCR_REG_REG(gpreg, SCR_OR, 0x01);
- np->script0->reselect1[0] = SCR_REG_REG(gpreg, SCR_AND, 0xfe);
- np->script0->reselect2[0] = SCR_REG_REG(gpreg, SCR_AND, 0xfe);
}
/*
@@ -5480,6 +5395,31 @@
OUTB (nc_dien , MDPE|BF|ABRT|SSI|SIR|IID);
/*
+ ** For 895/6 enable SBMC interrupt and save current SCSI bus mode.
+ */
+ if (np->features & _F_ULTRA2) {
+ OUTONW (nc_sien, SBMC);
+ np->scsi_mode = INB (nc_stest4) & SMODE;
+ }
+
+ /*
+ ** Fill in target structure.
+ ** Prepare sync negotiation according to actual SCSI bus mode.
+ */
+
+ for (i=0;i<MAX_TARGET;i++) {
+ tcb_p tp = &np->target[i];
+
+ tp->sval = 0;
+ tp->wval = np->rv_scntl3;
+
+ tp->usrsync = usrsync;
+ tp->usrwide = usrwide;
+
+ ncr_negotiate (np, tp);
+ }
+
+ /*
** Start script processor.
*/
@@ -5502,14 +5442,12 @@
u_long minsync = tp->usrsync;
- if (driver_setup.ultra_scsi >= 2) {
- if (minsync < 10) minsync=10;
- }
- else if (driver_setup.ultra_scsi == 1) {
- if (minsync < 12) minsync=12;
- }
- else {
- if (minsync < 25) minsync=25;
+ /*
+ ** SCSI bus mode limit
+ */
+
+ if (np->scsi_mode && np->scsi_mode == SMODE_SE) {
+ if (minsync < 12) minsync = 12;
}
/*
@@ -5628,7 +5566,7 @@
*fakp = fak - 4;
*scntl3p = ((idiv+1) << 4) + (fac < 25 ? ULTRA : 0);
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printf("fac=%d idiv=%d per=%d fak=%x ", fac, idiv, per, *fakp);
#endif
@@ -5867,7 +5805,7 @@
**----------------------------------------------------
*/
-#ifdef SCSI_NCR_USER_COMMAND
+#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
static void ncr_usercmd (ncb_p np)
{
@@ -5897,7 +5835,7 @@
break;
case UC_SETDEBUG:
-#ifdef SCSI_NCR_DEBUG
+#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
ncr_debug = np->user.data;
#endif
break;
@@ -5929,12 +5867,106 @@
case UC_CLEARPROF:
bzero(&np->profile, sizeof(np->profile));
break;
+#ifdef UC_DEBUG_ERROR_RECOVERY
+ case UC_DEBUG_ERROR_RECOVERY:
+ np->debug_error_recovery = np->user.data;
+ break;
+#endif
}
np->user.cmd=0;
}
#endif
+/*=====================================================================
+**
+** Embedded error recovery debugging code.
+**
+**=====================================================================
+**
+** This code is conditionned by SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT.
+** It only can be enabled after boot-up with a control command.
+**
+** Every 30 seconds the timer handler of the driver decides to
+** change the behaviour of the driver in order to trigger errors.
+**
+** If last command was "debug_error_recovery sge", the driver
+** sets sync offset of all targets that use sync transfers to 2,
+** and so hopes a SCSI gross error at the next read operation.
+**
+** If last command was "debug_error_recovery abort", the driver
+** does not signal new scsi commands to the script processor, until
+** it is asked to abort or reset a command by the mid-level driver.
+**
+** If last command was "debug_error_recovery reset", the driver
+** does not signal new scsi commands to the script processor, until
+** it is asked to reset a command by the mid-level driver.
+**
+** If last command was "debug_error_recovery parity", the driver
+** will assert ATN on the next DATA IN phase mismatch, and so will
+** behave as if a parity error had been detected.
+**
+** The command "debug_error_recovery none" makes the driver behave
+** normaly.
+**
+**=====================================================================
+*/
+
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+static void ncr_trigger_errors (ncb_p np)
+{
+ /*
+ ** If np->debug_error_recovery is not zero, we want to
+ ** simulate common errors in order to test error recovery.
+ */
+ do {
+ static u_long last = 0l;
+
+ if (!np->debug_error_recovery)
+ break;
+ if (!last)
+ last = jiffies;
+ else if (jiffies < last + 30*HZ)
+ break;
+ last = jiffies;
+ /*
+ * This one triggers SCSI gross errors.
+ */
+ if (np->debug_error_recovery == 1) {
+ int i;
+ printf("%s: testing error recovery from SCSI gross error...\n", ncr_name(np));
+ for (i = 0 ; i < MAX_TARGET ; i++) {
+ if (np->target[i].sval & 0x1f) {
+ np->target[i].sval &= ~0x1f;
+ np->target[i].sval += 2;
+ }
+ }
+ }
+ /*
+ * This one triggers abort from the mid-level driver.
+ */
+ else if (np->debug_error_recovery == 2) {
+ printf("%s: testing error recovery from mid-level driver abort()...\n", ncr_name(np));
+ np->stalling = 2;
+ }
+ /*
+ * This one triggers reset from the mid-level driver.
+ */
+ else if (np->debug_error_recovery == 3) {
+ printf("%s: testing error recovery from mid-level driver reset()...\n", ncr_name(np));
+ np->stalling = 3;
+ }
+ /*
+ * This one set ATN on phase mismatch in DATA IN phase and so
+ * will behave as on scsi parity error detected.
+ */
+ else if (np->debug_error_recovery == 4) {
+ printf("%s: testing data in parity error...\n", ncr_name(np));
+ np->assert_atn = 1;
+ }
+ } while (0);
+}
+#endif
/*==========================================================
**
@@ -5977,6 +6009,10 @@
add_timer(&np->timer);
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ ncr_trigger_errors (np);
+#endif
+
/*
** If we are resetting the ncr, wait for settle_time before
** clearing it. Then command processing will be resumed.
@@ -6084,6 +6120,9 @@
*/
ncr_complete (np, cp);
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if (!np->stalling)
+#endif
OUTB (nc_istat, SIGP);
}
restore_flags(flags);
@@ -6138,6 +6177,7 @@
{
u_int32 dsp;
int script_ofs;
+ int script_size;
char *script_name;
u_char *script_base;
int i;
@@ -6146,11 +6186,13 @@
if (dsp > np->p_script && dsp <= np->p_script + sizeof(struct script)) {
script_ofs = dsp - np->p_script;
+ script_size = sizeof(struct script);
script_base = (u_char *) np->script;
script_name = "script";
}
else {
script_ofs = dsp - np->p_scripth;
+ script_size = sizeof(struct scripth);
script_base = (u_char *) np->scripth;
script_name = "scripth";
}
@@ -6162,7 +6204,7 @@
(unsigned)INL (nc_dbc));
if (((script_ofs & 3) == 0) &&
- (unsigned)script_ofs < sizeof(struct script)) {
+ (unsigned)script_ofs < script_size) {
printf ("%s: script cmd = %08x\n", ncr_name(np),
(int) *(ncrcmd *)(script_base + script_ofs));
}
@@ -6173,13 +6215,36 @@
printf (".\n");
}
-/*==========================================================
-**
+/*============================================================
**
** ncr chip exception handler.
**
+**============================================================
**
-**==========================================================
+** In normal cases, interrupt conditions occur one at a
+** time. The ncr is able to stack in some extra registers
+** other interrupts that will occurs after the first one.
+** But severall interrupts may occur at the same time.
+**
+** We probably should only try to deal with the normal
+** case, but it seems that multiple interrupts occur in
+** some cases that are not abnormal at all.
+**
+** The most frequent interrupt condition is Phase Mismatch.
+** We should want to service this interrupt quickly.
+** A SCSI parity error may be delivered at the same time.
+** The SIR interrupt is not very frequent in this driver,
+** since the INTFLY is likely used for command completion
+** signaling.
+** The Selection Timeout interrupt may be triggered with
+** IID and/or UDC.
+** The SBMC interrupt (SCSI Bus Mode Change) may probably
+** occur at any time.
+**
+** This handler try to deal as cleverly as possible with all
+** the above.
+**
+**============================================================
*/
void ncr_exception (ncb_p np)
@@ -6193,14 +6258,23 @@
*/
while ((istat = INB (nc_istat)) & INTF) {
if (DEBUG_FLAGS & DEBUG_TINY) printf ("F ");
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if (np->stalling)
+ OUTB (nc_istat, INTF);
+ else
+#endif
OUTB (nc_istat, (istat & SIGP) | INTF);
np->profile.num_fly++;
ncr_wakeup (np, 0);
};
- if (!(istat & (SIP|DIP))) {
+ if (!(istat & (SIP|DIP)))
return;
- }
+
+ np->profile.num_int++;
+
+ if (istat & CABRT)
+ OUTB (nc_istat, CABRT);
/*
** Steinbach's Guideline for Systems Programming:
@@ -6209,7 +6283,6 @@
sist = (istat & SIP) ? INW (nc_sist) : 0;
dstat = (istat & DIP) ? INB (nc_dstat) : 0;
- np->profile.num_int++;
if (DEBUG_FLAGS & DEBUG_TINY)
printf ("<%d|%x:%x|%x:%x>",
@@ -6217,234 +6290,121 @@
dstat,sist,
(unsigned)INL(nc_dsp),
(unsigned)INL(nc_dbc));
- if ((dstat==DFE) && (sist==PAR)) return;
-/*==========================================================
-**
-** First the normal cases.
-**
-**==========================================================
-*/
- /*-------------------------------------------
- ** SCSI reset
- **-------------------------------------------
- */
-
- if (sist & RST) {
- ncr_init (np, bootverbose ? "scsi reset" : NULL, HS_RESET);
- return;
- };
-
- /*-------------------------------------------
- ** selection timeout
+ /*========================================================
+ ** First, interrupts we want to service cleanly.
**
- ** IID excluded from dstat mask!
- ** (chip bug)
- **-------------------------------------------
- */
-
- if ((sist & STO) &&
- !(sist & (GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|SIR))) {
- ncr_int_sto (np);
- return;
- };
-
- /*-------------------------------------------
- ** Phase mismatch.
- **-------------------------------------------
- */
-
- if ((sist & MA) &&
- !(sist & (STO|GEN|HTH|SGE|UDC|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|SIR|IID))) {
- ncr_int_ma (np);
+ ** Phase mismatch is the most frequent interrupt, and
+ ** so we have to service it as quickly and as cleanly
+ ** as possible.
+ ** Programmed interrupts are rarely used in this driver,
+ ** but we must handle them cleanly anyway.
+ ** We try to deal with PAR and SBMC combined with
+ ** some other interrupt(s).
+ **=========================================================
+ */
+
+ if (!(sist & (STO|GEN|HTH|SGE|UDC|RST)) &&
+ !(dstat & (MDPE|BF|ABRT|IID))) {
+ if ((sist & SBMC) && ncr_int_sbmc (np))
+ return;
+ if ((sist & PAR) && ncr_int_par (np))
+ return;
+ if (sist & MA) {
+ ncr_int_ma (np);
+ return;
+ }
+ if (dstat & SIR) {
+ ncr_int_sir (np);
+ return;
+ }
+ if (!(sist & (SBMC|PAR)) && !(dstat & SSI))
+ printf("%s: unknown interrupt(s) ignored sist=%x dstat=%x\n",
+ ncr_name(np), sist, dstat);
+ OUTONB (nc_dcntl, (STD|NOCOM));
return;
};
- /*----------------------------------------
- ** move command with length 0
- **----------------------------------------
+ /*========================================================
+ ** Now, interrupts that need some fixing up.
+ ** Order and multiple interrupts is so less important.
+ **
+ ** If SRST has been asserted, we just reset the chip.
+ **
+ ** Selection is intirely handled by the chip. If the
+ ** chip says STO, we trust it. Seems some other
+ ** interrupts may occur at the same time (UDC, IID), so
+ ** we ignore them. In any case we do enough fix-up
+ ** in the service routine.
+ ** We just exclude some fatal dma errors.
+ **=========================================================
*/
- if ((dstat & IID) &&
- !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|SIR)) &&
- ((INL(nc_dbc) & 0xf8000000) == SCR_MOVE_TBL)) {
- /*
- ** Target wants more data than available.
- ** The "no_data" script will do it.
- */
- OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, no_data));
+ if (sist & RST) {
+ ncr_init (np, bootverbose ? "scsi reset" : NULL, HS_RESET);
return;
};
- /*-------------------------------------------
- ** Programmed interrupt
- **-------------------------------------------
- */
-
- if ((dstat & SIR) &&
- !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|IID)) &&
- (INB(nc_dsps) <= SIR_MAX)) {
- ncr_int_sir (np);
+ if ((sist & STO) &&
+ !(dstat & (MDPE|BF|ABRT))) {
+ ncr_int_sto (np);
return;
};
- /*========================================
- ** do the register dump
- **========================================
+ /*=========================================================
+ ** Now, interrupts we are not able to recover cleanly.
+ ** (At least for the moment).
+ **
+ ** Do the register dump.
+ ** Log message for real hard errors.
+ ** Clear all fifos.
+ ** For MDPE, BF, ABORT, IID, SGE and HTH we reset the
+ ** BUS and the chip.
+ ** We are more soft for UDC.
+ **=========================================================
*/
if (jiffies - np->regtime > 10*HZ) {
- int i;
np->regtime = jiffies;
- for (i=0; i<sizeof(np->regdump); i++)
+ for (i = 0; i<sizeof(np->regdump); i++)
((char*)&np->regdump)[i] = INB_OFF(i);
np->regdump.nc_dstat = dstat;
np->regdump.nc_sist = sist;
};
- /*=========================================
- ** log message for real hard errors
- **=========================================
- */
- ncr_log_hard_error(np, sist, dstat);
-
- /*----------------------------------------
- ** clean up the dma fifo
- **----------------------------------------
- */
-
- if ( (INB(nc_sstat0) & (ILF|ORF|OLF) ) ||
- (INB(nc_sstat1) & (FF3210) ) ||
- (INB(nc_sstat2) & (ILF1|ORF1|OLF1)) || /* wide .. */
- !(dstat & DFE)) {
- printf ("%s: have to clear fifos.\n", ncr_name (np));
- OUTB (nc_stest3, TE|CSF); /* clear scsi fifo */
- OUTONB (nc_ctest3, CLF); /* clear dma fifo */
- }
-
- /*----------------------------------------
- ** handshake timeout
- **----------------------------------------
- */
-
- if (sist & HTH) {
- printf ("%s: handshake timeout\n", ncr_name(np));
- OUTB (nc_scntl1, CRST);
- DELAY (1000);
- OUTB (nc_scntl1, 0x00);
- OUTB (nc_scr0, HS_FAIL);
- OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, cleanup));
- return;
- }
-
- /*----------------------------------------
- ** unexpected disconnect
- **----------------------------------------
- */
-
- if ((sist & UDC) &&
- !(sist & (STO|GEN|HTH|MA|SGE|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|SIR|IID))) {
- OUTB (nc_scr0, HS_UNEXPECTED);
- OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, cleanup));
- return;
- };
-
- /*----------------------------------------
- ** cannot disconnect
- **----------------------------------------
- */
-
- if ((dstat & IID) &&
- !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|SIR)) &&
- ((INL(nc_dbc) & 0xf8000000) == SCR_WAIT_DISC)) {
- /*
- ** Unexpected data cycle while waiting for disconnect.
- ** LDSC and CON bits may help in order to understand
- ** what really happened. Print some info message and let
- ** the reset function reset the BUS and the NCR.
- */
- printf("%s:%d: data cycle while waiting for disconnect, LDSC=%d CON=%d\n",
- ncr_name (np), (int)(INB(nc_ctest0)&0x0f),
- (0!=(INB(nc_sstat2)&LDSC)), (0!=(INB(nc_scntl1)&ISCON)));
- };
-
- /*----------------------------------------
- ** single step
- **----------------------------------------
- */
-
- if ((dstat & SSI) &&
- !(sist & (STO|GEN|HTH|MA|SGE|UDC|RST|PAR)) &&
- !(dstat & (MDPE|BF|ABRT|SIR|IID))) {
- OUTONB (nc_dcntl, (STD|NOCOM));
- return;
- };
-
-/*
-** @RECOVER@ HTH, SGE, ABRT.
-**
-** We should try to recover from these interrupts.
-** They may occur if there are problems with synch transfers, or
-** if targets are switched on or off while the driver is running.
-*/
-
- if (sist & SGE) {
- OUTONB (nc_ctest3, CLF); /* clear scsi offsets */
- }
-
- /*
- ** Freeze controller to be able to read the messages.
- */
-
- if (DEBUG_FLAGS & DEBUG_FREEZE) {
- unsigned char val;
- for (i=0; i<0x60; i++) {
- switch (i%16) {
-
- case 0:
- printf ("%s: reg[%d0]: ",
- ncr_name(np),i/16);
- break;
- case 4:
- case 8:
- case 12:
- printf (" ");
- break;
- };
- val = INB_OFF(i);
- printf (" %x%x", val/16, val%16);
- if (i%16==15) printf (".\n");
- }
-
- del_timer(&np->timer);
+ ncr_log_hard_error(np, sist, dstat);
- printf ("%s: halted!\n", ncr_name(np));
- /*
- ** don't restart controller ...
- */
- OUTB (nc_istat, SRST);
+ printf ("%s: have to clear fifos.\n", ncr_name (np));
+ OUTB (nc_stest3, TE|CSF);
+ OUTONB (nc_ctest3, CLF);
+
+ if ((sist & (SGE)) ||
+ (dstat & (MDPE|BF|ABORT|IID))) {
+ ncr_start_reset(np, 2);
return;
};
-#ifdef NCR_FREEZE
- /*
- ** Freeze system to be able to read the messages.
- */
- printf ("ncr: fatal error: system halted - press reset to reboot ...");
- cli();
- for (;;);
-#endif
+ if (sist & HTH) {
+ printf ("%s: handshake timeout\n", ncr_name(np));
+ ncr_start_reset(np, 2);
+ return;
+ };
- /*
- ** sorry, have to kill ALL jobs ...
- */
+ if (sist & UDC) {
+ printf ("%s: unexpected disconnect\n", ncr_name(np));
+ if (INB (nc_scr1) != 0xff) {
+ OUTB (nc_scr1, HS_UNEXPECTED);
+ OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, cleanup));
+ };
+ ncr_start_reset(np, 2);
+ return;
+ };
- ncr_start_reset(np, 2);
+ /*=========================================================
+ ** We just miss the cause of the interrupt. :(
+ ** Print a message. The timeout will do the real work.
+ **=========================================================
+ */
+ printf ("%s: unknown interrupt\n", ncr_name(np));
}
/*==========================================================
@@ -6503,6 +6463,70 @@
/*==========================================================
**
+** ncr chip exception handler for SCSI bus mode change
+**
+**==========================================================
+**
+** I'm not quite sure of what is to be done in such a
+** situation.
+** For now,
+** Reset the bus if some devices use too fast sync transfers.
+** Otherwise, just try to renegotiate sync with targets.
+**
+**----------------------------------------------------------
+*/
+
+static int ncr_int_sbmc (ncb_p np)
+{
+ u_char scsi_mode = INB (nc_stest4) & SMODE;
+ int i;
+ int oversync;
+
+ printf("%s: SCSI bus mode change from %x to %x\n", ncr_name(np),
+ np->scsi_mode, scsi_mode);
+
+ if (scsi_mode == np->scsi_mode)
+ return 0;
+
+ np->scsi_mode = scsi_mode;
+ oversync = 0;
+ for (i = 0; i < MAX_TARGET; i++) {
+ tcb_p tp = &np->target[i];
+
+ if (np->ns_sync < 12 && tp->maxoffs && tp->usrsync < 12) {
+ if (scsi_mode != SMODE_SE)
+ ncr_negotiate(np, tp);
+ else
+ ++oversync;
+ }
+ }
+
+ if (oversync)
+ ncr_start_reset(np, 2);
+
+ return oversync;
+}
+
+/*==========================================================
+**
+** ncr chip exception handler for SCSI parity error.
+**
+**==========================================================
+**
+** SCSI parity errors are handled by the SCSI script.
+** So, we just print some message.
+**
+**----------------------------------------------------------
+*/
+
+static int ncr_int_par (ncb_p np)
+{
+ printf("%s: SCSI parity error detected\n", ncr_name(np));
+ return 0;
+}
+
+/*==========================================================
+**
**
** ncr chip exception handler for phase errors.
**
@@ -6538,22 +6562,18 @@
/*
** Take into account dma fifo and various buffers and latches,
- ** only if the interrupted phase in an OUTPUT phase.
+ ** only if the interrupted phase was DATA OUT.
*/
- if ((cmd & 1) == 0) {
+ if ((cmd & 7) == 0) {
u_char ctest5, ss0, ss2;
u_short delta;
- if (!(INB(nc_dstat) & DFE)) {
- ctest5 = (np->rv_ctest5 & DFS) ? INB (nc_ctest5) : 0;
- if (ctest5 & DFS)
- delta=(((ctest5 << 8) | (INB (nc_dfifo) & 0xff)) - rest) & 0x3ff;
- else
- delta=(INB (nc_dfifo) - rest) & 0x7f;
- } else {
- delta = 0;
- }
+ ctest5 = (np->rv_ctest5 & DFS) ? INB (nc_ctest5) : 0;
+ if (ctest5 & DFS)
+ delta=(((ctest5 << 8) | (INB (nc_dfifo) & 0xff)) - rest) & 0x3ff;
+ else
+ delta=(INB (nc_dfifo) - rest) & 0x7f;
/*
** The data in the dma fifo has not been transfered to
@@ -6582,9 +6602,10 @@
} else {
if (DEBUG_FLAGS & (DEBUG_TINY|DEBUG_PHASE))
printf ("P%x%x RL=%d ", cmd&7, sbcl&7, rest);
- if (!(INB(nc_dstat) & DFE))
- printf("INPUT phase mismatch with DMA fifo not empty, P%x%x RL=%d\n",
- cmd&7, sbcl&7, rest);
+ if ((cmd & 7) != 1) {
+ OUTONB (nc_ctest3, CLF );
+ OUTB (nc_stest3, TE|CSF);
+ }
}
/*
@@ -6660,7 +6681,7 @@
};
/*
- ** if old phase not dataphase, leave here.
+ ** check cmd against assumed interrupted script command.
*/
if (cmd != (vdsp[0] >> 24)) {
@@ -6670,6 +6691,18 @@
return;
}
+
+#ifdef SCSI_NCR_DEBUG_ERROR_RECOVERY_SUPPORT
+ if ((cmd & 7) == 1 && np->assert_atn) {
+ np->assert_atn = 0;
+ OUTONB(nc_socl, CATN);
+ }
+#endif
+
+ /*
+ ** if old phase not dataphase, leave here.
+ */
+
if (cmd & 0x06) {
PRINT_ADDR(cp->cmd);
printf ("phase change %x-%x %d@%08x resid=%d.\n",
@@ -6712,7 +6745,10 @@
*/
np->profile.num_break++;
OUTL (nc_temp, vtophys (newcmd));
- OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, dispatch));
+ if ((cmd & 7) == 0)
+ OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, dispatch));
+ else
+ OUTL (nc_dsp, NCB_SCRIPT_PHYS (np, checkatn));
}
/*==========================================================
@@ -6778,15 +6814,24 @@
}
switch (num) {
+ u_long endp;
case SIR_DATA_IO_IS_OUT:
+ case SIR_DATA_IO_IS_IN:
/*
-** We did not guess the direction of transfer. We assumed DATA IN,
-** but the the target drove DATA OUT.
-** We have to patch the script context with DATA OUT context and
-** restart processing at data out script address.
-*/
- cp->phys.header.savep = NCB_SCRIPTH_PHYS (np, data_out);
- cp->phys.header.goalp = cp->phys.header.savep +20 +cp->segments*16;
+** We did not guess the direction of transfer. We have to wait for
+** actual data direction driven by the target before setting
+** pointers. We must patch the global header too.
+*/
+ if (num == SIR_DATA_IO_IS_OUT) {
+ endp = NCB_SCRIPTH_PHYS (np, data_out) + MAX_SCATTER*16;
+ cp->phys.header.goalp = endp + 8;
+ cp->phys.header.savep = endp - cp->segments*16;
+ } else {
+ endp = NCB_SCRIPT_PHYS (np, data_in) + MAX_SCATTER*16;
+ cp->phys.header.goalp = endp + 8;
+ cp->phys.header.savep = endp - cp->segments*16;
+ }
+
cp->phys.header.lastp = cp->phys.header.savep;
np->header.savep = cp->phys.header.savep;
np->header.goalp = cp->phys.header.goalp;
@@ -7276,6 +7321,7 @@
(unsigned) np->header.goalp);
break;
+#if 0 /* This stuff does not work */
/*--------------------------------------------------------------------
**
** Processing of a "S_QUEUE_FULL" status.
@@ -7353,6 +7399,7 @@
printf ("%s: queue empty.\n", ncr_name (np));
np->script->start1[0] = SCR_INT ^ IFFALSE (0);
break;
+#endif /* This stuff does not work */
};
out:
@@ -7362,7 +7409,7 @@
/*==========================================================
**
**
-** Acquire a control block
+** Aquire a control block
**
**
**==========================================================
@@ -7496,10 +7543,10 @@
tp->jump_tcb.l_cmd = (SCR_JUMP^IFFALSE (DATA (0x80 + target)));
tp->jump_tcb.l_paddr = np->jump_tcb.l_paddr;
- tp->getscr[0] = SCR_COPY (1);
+ tp->getscr[0] = (np->features & _F_PFEN)? SCR_COPY(1) : SCR_COPY_F(1);
tp->getscr[1] = vtophys (&tp->sval);
tp->getscr[2] = np->paddr + offsetof (struct ncr_reg, nc_sxfer);
- tp->getscr[3] = SCR_COPY (1);
+ tp->getscr[3] = (np->features & _F_PFEN)? SCR_COPY(1) : SCR_COPY_F(1);
tp->getscr[4] = vtophys (&tp->wval);
tp->getscr[5] = np->paddr + offsetof (struct ncr_reg, nc_scntl3);
@@ -7712,12 +7759,15 @@
int segment = 0;
int use_sg = (int) cmd->use_sg;
+#if 0
bzero (cp->phys.data, sizeof (cp->phys.data));
+#endif
data = cp->phys.data;
cp->data_len = 0;
if (!use_sg) {
if (cmd->request_bufflen) {
+ data = &data[MAX_SCATTER - 1];
data[0].addr = vtophys(cmd->request_buffer);
data[0].size = cmd->request_bufflen;
cp->data_len = data[0].size;
@@ -7727,6 +7777,7 @@
else if (use_sg <= MAX_SCATTER) {
struct scatterlist *scatter = (struct scatterlist *)cmd->buffer;
+ data = &data[MAX_SCATTER - use_sg];
while (segment < use_sg) {
data[segment].addr = vtophys(scatter[segment].address);
data[segment].size = scatter[segment].length;
@@ -7753,7 +7804,9 @@
*/
#ifndef NCR_IOMAPPED
+__initfunc(
static int ncr_regtest (struct ncb* np)
+)
{
register volatile u_long data;
/*
@@ -7777,7 +7830,9 @@
}
#endif
+__initfunc(
static int ncr_snooptest (struct ncb* np)
+)
{
u_long ncr_rd, ncr_wr, ncr_bk, host_rd, host_wr, pc, err=0;
int i;
@@ -7871,7 +7926,7 @@
**==========================================================
*/
-#ifdef SCSI_NCR_PROFILE
+#ifdef SCSI_NCR_PROFILE_SUPPORT
/*
** Compute the difference in jiffies ticks.
@@ -7883,7 +7938,7 @@
#define PROFILE cp->phys.header.stamp
static void ncb_profile (ncb_p np, ccb_p cp)
{
- int co, da, st, en, di, se, post,work,disc;
+ int co, st, en, di, se, post,work,disc;
u_long diff;
PROFILE.end = jiffies;
@@ -7891,9 +7946,6 @@
st = ncr_delta (PROFILE.start,PROFILE.status);
if (st<0) return; /* status not reached */
- da = ncr_delta (PROFILE.start,PROFILE.data);
- if (da<0) return; /* No data transfer phase */
-
co = ncr_delta (PROFILE.start,PROFILE.command);
if (co<0) return; /* command not executed */
@@ -7930,7 +7982,7 @@
}
#undef PROFILE
-#endif /* SCSI_NCR_PROFILE */
+#endif /* SCSI_NCR_PROFILE_SUPPORT */
/*==========================================================
**
@@ -7991,7 +8043,7 @@
/*==========================================================
**
** Determine the ncr's clock frequency.
-** This is important for the negotiation
+** This is essential for the negotiation
** of the synchronous transfer rate.
**
**==========================================================
@@ -7999,20 +8051,53 @@
** Note: we have to return the correct value.
** THERE IS NO SAVE DEFAULT VALUE.
**
-** We assume that all NCR based boards are delivered
-** with a 40Mhz clock. Because we have to divide
-** by an integer value greater than 3, only clock
-** frequencies of 40Mhz (/4) or 50MHz (/5) permit
-** the FAST-SCSI rate of 10MHz.
+** Most NCR/SYMBIOS boards are delivered with a 40 Mhz clock.
+** 53C860 and 53C875 rev. 1 support fast20 transfers but
+** do not have a clock doubler and so are provided with a
+** 80 MHz clock. All other fast20 boards incorporate a doubler
+** and so should be delivered with a 40 MHz clock.
+** The future fast40 chips (895/895) use a 40 Mhz base clock
+** and provide a clock quadrupler (160 Mhz). The code below
+** tries to deal as cleverly as possible with all this stuff.
**
**----------------------------------------------------------
*/
/*
+ * Select NCR SCSI clock frequency
+ */
+static void ncr_selectclock(ncb_p np, u_char scntl3)
+{
+ if (np->multiplier < 2) {
+ OUTB(nc_scntl3, scntl3);
+ return;
+ }
+
+ if (bootverbose >= 2)
+ printf ("%s: enabling clock multiplier\n", ncr_name(np));
+
+ OUTB(nc_stest1, DBLEN); /* Enable clock multiplier */
+ if (np->multiplier > 2) { /* Poll bit 5 of stest4 for quadrupler */
+ int i = 20;
+ while (!(INB(nc_stest4) & LCKFRQ) && --i > 0)
+ DELAY(20);
+ if (!i)
+ printf("%s: the chip cannot lock the frequency\n", ncr_name(np));
+ } else /* Wait 20 micro-seconds for doubler */
+ DELAY(20);
+ OUTB(nc_stest3, HSC); /* Halt the scsi clock */
+ OUTB(nc_scntl3, scntl3);
+ OUTB(nc_stest1, (DBLEN|DBLSEL));/* Select clock multiplier */
+ OUTB(nc_stest3, 0x00); /* Restart scsi clock */
+}
+
+
+/*
* calculate NCR SCSI clock frequency (in KHz)
*/
-static unsigned
-ncrgetfreq (ncb_p np, int gen)
+__initfunc(
+static unsigned ncrgetfreq (ncb_p np, int gen)
+)
{
unsigned ms = 0;
@@ -8058,38 +8143,11 @@
}
/*
- * Select NCR SCSI clock frequency
- */
-static void ncr_selectclock(ncb_p np, u_char scntl3)
-{
- if (np->multiplier < 2) {
- OUTB(nc_scntl3, scntl3);
- return;
- }
-
- if (bootverbose >= 2)
- printf ("%s: enabling clock multiplier\n", ncr_name(np));
-
- OUTB(nc_stest1, DBLEN); /* Enable clock multiplier */
- if (np->multiplier > 2) { /* Poll bit 5 of stest4 for quadrupler */
- int i = 20;
- while (!(INB(nc_stest4) & 0x20) && --i > 0)
- DELAY(20);
- if (!i)
- printf("%s: the chip cannot lock the frequency\n", ncr_name(np));
- } else /* Wait 20 micro-seconds for doubler */
- DELAY(20);
- OUTB(nc_stest3, 0x20); /* Halt the scsi clock */
- OUTB(nc_scntl3, scntl3);
- OUTB(nc_stest1, (DBLEN|DBLSEL));/* Select clock multiplier */
- OUTB(nc_stest3, 0x00); /* Restart scsi clock */
-}
-
-
-/*
* Get/probe NCR SCSI clock frequency
*/
+__initfunc(
static void ncr_getclock (ncb_p np, int mult)
+)
{
unsigned char scntl3 = INB(nc_scntl3);
unsigned char stest1 = INB(nc_stest1);
@@ -8151,58 +8209,14 @@
np->ns_sync = 25;
if (f1 >= 160000) {
- if (driver_setup.ultra_scsi) np->ns_sync = 10;
- np->rv_scntl3 = 7;
+ if (np->features & _F_ULTRA2) np->ns_sync = 10;
+ else if (np->features & _F_ULTRA) np->ns_sync = 12;
}
else if (f1 >= 80000) {
- if (driver_setup.ultra_scsi) np->ns_sync = 12;
- np->rv_scntl3 = 5;
- }
- else {
- np->rv_scntl3 = 3;
- }
-
- if (bootverbose > 1) {
- printf ("%s: initial value of SCNTL3 = %02x, final = %02x\n",
- ncr_name(np), scntl3, np->rv_scntl3);
+ if (np->features & _F_ULTRA) np->ns_sync = 12;
}
}
-/*
-** Save some features set by bios
-**
-** DMODE 0xce
-** 0x02 burst op-code fetch
-** 0x04 enable read multiple
-** 0x08 enable read line
-** 0xc0 burst length 16/8/2
-** DCNTL 0xa8
-** 0x08 totem pole irq
-** 0x20 enable pre-fetch
-** 0x80 enable cache line size
-** CTEST3 0x01
-** 0x01 set write and invalidate
-** CTEST4 0x80
-** 0x80 burst disabled
-** CTEST5 0x24
-** 0x20 large dma fifo (875 and 895 only)
-** 0x04 burst len 32/64/128 (875 and 895 only)
-** GPCNTL general purpose control register
-** STEST2 0x20 differential mode
-*/
-
-static void ncr_save_bios_setting(ncb_p np)
-{
- np->sv_scntl3 = INB(nc_scntl3) & 0x07;
- np->sv_dmode = INB(nc_dmode) & 0xce;
- np->sv_dcntl = INB(nc_dcntl) & 0xa8;
- np->sv_ctest3 = INB(nc_ctest3) & 0x01;
- np->sv_ctest4 = INB(nc_ctest4) & 0x80;
- np->sv_ctest5 = INB(nc_ctest5) & 0x24;
- np->sv_gpcntl = INB(nc_gpcntl);
- np->sv_stest2 = INB(nc_stest2) & 0x20;
-}
-
/*===================== LINUX ENTRY POINTS SECTION ==========================*/
#ifndef uchar
@@ -8224,8 +8238,11 @@
** ---------------------------------------------------------------------
*/
+__initfunc(
void ncr53c8xx_setup(char *str, int *ints)
+)
{
+#ifdef SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
char *cur = str;
char *pv;
int val;
@@ -8295,6 +8312,8 @@
driver_setup.diff_support= val;
else if (!strncmp(cur, "irqm:", 5))
driver_setup.irqm = val;
+ else if (!strncmp(cur, "pcifix:", 7))
+ driver_setup.pci_fix_up = val;
else if (!strncmp(cur, "safe:", 5) && val)
memcpy(&driver_setup, &driver_safe_setup, sizeof(driver_setup));
@@ -8302,34 +8321,11 @@
if ((cur = strchr(cur, ',')) != NULL)
++cur;
}
+#endif /* SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT */
}
-static int ncr53c8xx_pci_init(Scsi_Host_Template *tpnt, int unit, int board, int chip,
- uchar bus, uchar device_fn, int options);
-
-/*
-** NCR53C8XX devices description table
-*/
-
-static struct {
- ushort pci_device_id;
- int chip;
- int max_revision;
- int min_revision;
-} pci_chip_ids[] = {
- {PCI_DEVICE_ID_NCR_53C810, 810, -1, -1},
-/* {PCI_DEVICE_ID_NCR_53C810AP, 810, -1, -1}, */
- {PCI_DEVICE_ID_NCR_53C815, 815, -1, -1},
- {PCI_DEVICE_ID_NCR_53C820, 820, -1, -1},
- {PCI_DEVICE_ID_NCR_53C825, 825, -1, -1},
- {PCI_DEVICE_ID_NCR_53C860, 860, -1, -1},
- {PCI_DEVICE_ID_NCR_53C875, 875, -1, -1},
- {PCI_DEVICE_ID_NCR_53C885, 885, -1, -1},
- {PCI_DEVICE_ID_NCR_53C895, 895, -1, -1},
- {PCI_DEVICE_ID_NCR_53C896, 896, -1, -1}
-};
-
-#define NPCI_CHIP_IDS (sizeof (pci_chip_ids) / sizeof(pci_chip_ids[0]))
+static int ncr53c8xx_pci_init(Scsi_Host_Template *tpnt, int unit,
+ uchar bus, uchar device_fn);
/*
** Linux entry point for NCR53C8XX devices detection routine.
@@ -8343,16 +8339,12 @@
** Returns the number of boards successfully attached.
*/
-int ncr53c8xx_detect(Scsi_Host_Template *tpnt)
+__initfunc(
+static void ncr_print_driver_setup(void)
+)
{
- int i, j;
- int count = 0; /* Number of boards detected */
- uchar pci_bus, pci_device_fn;
- short pci_index; /* Device index to PCI BIOS calls */
-
#define YesNo(y) y ? 'y' : 'n'
- if (bootverbose >= 2) {
- printk("ncr53c8xx: setup=disc:%c,specf:%c,ultra:%c,tags:%d,sync:%d,burst:%d,wide:%c,diff:%d\n",
+ printk("ncr53c8xx: setup=disc:%c,specf:%c,ultra:%c,tags:%d,sync:%d,burst:%d,wide:%c,diff:%d\n",
YesNo(driver_setup.disconnection),
YesNo(driver_setup.special_features),
YesNo(driver_setup.ultra_scsi),
@@ -8361,7 +8353,7 @@
driver_setup.burst_max,
YesNo(driver_setup.max_wide),
driver_setup.diff_support);
- printk("ncr53c8xx: setup=mpar:%c,spar:%c,fsn=%c,verb:%d,debug:0x%x,led:%c,settle:%d,irqm:%d\n",
+ printk("ncr53c8xx: setup=mpar:%c,spar:%c,fsn=%c,verb:%d,debug:0x%x,led:%c,settle:%d,irqm:%d\n",
YesNo(driver_setup.master_parity),
YesNo(driver_setup.scsi_parity),
YesNo(driver_setup.force_sync_nego),
@@ -8370,10 +8362,30 @@
YesNo(driver_setup.led_pin),
driver_setup.settle_delay,
driver_setup.irqm);
- }
#undef YesNo
+}
+
+/*
+** NCR53C8XX devices description table and chip ids list.
+*/
+
+static ncr_chip ncr_chip_table[] __initdata = SCSI_NCR_CHIP_TABLE;
+static ushort ncr_chip_ids[] __initdata = SCSI_NCR_CHIP_IDS;
+
+__initfunc(
+int ncr53c8xx_detect(Scsi_Host_Template *tpnt)
+)
+{
+ int i, j;
+ int chips;
+ int count = 0;
+ uchar bus, device_fn;
+ short index;
+
+ if (bootverbose >= 2)
+ ncr_print_driver_setup();
-#ifdef SCSI_NCR_DEBUG
+#ifdef SCSI_NCR_DEBUG_INFO_SUPPORT
ncr_debug = driver_setup.debug;
#endif
@@ -8384,21 +8396,21 @@
# endif
#endif
- if (pcibios_present()) {
- for (j = 0; j < NPCI_CHIP_IDS; ++j) {
- i = driver_setup.reverse_probe ? NPCI_CHIP_IDS-1 - j : j;
- for (pci_index = 0;
- !pcibios_find_device(PCI_VENDOR_ID_NCR,
- pci_chip_ids[i].pci_device_id, pci_index, &pci_bus,
- &pci_device_fn);
- ++pci_index)
- if (!ncr53c8xx_pci_init(tpnt, count, 0, pci_chip_ids[i].chip,
- pci_bus, pci_device_fn, /* no options */ 0))
- ++count;
- }
- }
+ if (!pcibios_present())
+ return 0;
- return count;
+ chips = sizeof(ncr_chip_ids) / sizeof(ncr_chip_ids[0]);
+ for (j = 0; j < chips ; ++j) {
+ i = driver_setup.reverse_probe ? chips-1 - j : j;
+ for (index = 0; ; index++) {
+ if (pcibios_find_device(PCI_VENDOR_ID_NCR, ncr_chip_ids[i],
+ index, &bus, &device_fn))
+ break;
+ if (!ncr53c8xx_pci_init(tpnt, count, bus, device_fn))
+ ++count;
+ }
+ }
+ return count;
}
@@ -8407,103 +8419,165 @@
** try yo attach it.
*/
-static int ncr53c8xx_pci_init(Scsi_Host_Template *tpnt, int unit, int board, int chip,
- uchar bus, uchar device_fn, int options)
-{
- ushort vendor_id, device_id, command;
+__initfunc(
+static int ncr53c8xx_pci_init(Scsi_Host_Template *tpnt, int unit,
+ uchar bus, uchar device_fn)
+)
+{
+ ushort vendor_id, device_id, command;
+ uchar cache_line_size, latency_timer;
+ uchar irq, revision;
#if LINUX_VERSION_CODE >= LinuxVersionCode(1,3,0)
- uint base, io_port;
+ uint base, io_port;
#else
- ulong base, io_port;
+ ulong base, io_port;
#endif
- uchar irq, revision;
- int error, expected_chip;
- int expected_id = -1, max_revision = -1, min_revision = -1;
- int i;
-
- printk("ncr53c8xx: at PCI bus %d, device %d, function %d\n",
- bus, (int) (device_fn & 0xf8) >> 3, (int) device_fn & 7);
-
- if (!pcibios_present()) {
- printk("ncr53c8xx: not initializing due to lack of PCI BIOS,\n");
- return -1;
- }
-
- if ((error = pcibios_read_config_word( bus, device_fn, PCI_VENDOR_ID, &vendor_id)) ||
- (error = pcibios_read_config_word( bus, device_fn, PCI_DEVICE_ID, &device_id)) ||
- (error = pcibios_read_config_word( bus, device_fn, PCI_COMMAND, &command)) ||
- (error = pcibios_read_config_dword(bus, device_fn, PCI_BASE_ADDRESS_0, &io_port)) ||
- (error = pcibios_read_config_dword(bus, device_fn, PCI_BASE_ADDRESS_1, &base)) ||
- (error = pcibios_read_config_byte (bus, device_fn, PCI_CLASS_REVISION, &revision)) ||
- (error = pcibios_read_config_byte (bus, device_fn, PCI_INTERRUPT_LINE, &irq))) {
- printk("ncr53c8xx: error %s not initializing due to error reading configuration space\n",
- pcibios_strerror(error));
- return -1;
- }
+ int i, error;
+ ncr_chip ncrchip, *chip;
- if (vendor_id != PCI_VENDOR_ID_NCR) {
- printk("ncr53c8xx: not initializing, 0x%04x is not NCR vendor ID\n", (int) vendor_id);
- return -1;
- }
+ printk("ncr53c8xx: at PCI bus %d, device %d, function %d\n",
+ bus, (int) (device_fn & 0xf8) >> 3, (int) device_fn & 7);
+ /*
+ * Read info from the PCI config space
+ */
+ if (
+(error=pcibios_read_config_word(bus, device_fn, PCI_VENDOR_ID, &vendor_id)) ||
+(error=pcibios_read_config_word(bus, device_fn, PCI_DEVICE_ID, &device_id)) ||
+(error=pcibios_read_config_word( bus, device_fn, PCI_COMMAND, &command)) ||
+(error=pcibios_read_config_dword(bus, device_fn, PCI_BASE_ADDRESS_0,&io_port)) ||
+(error=pcibios_read_config_dword(bus, device_fn, PCI_BASE_ADDRESS_1, &base)) ||
+(error=pcibios_read_config_byte(bus, device_fn, PCI_CLASS_REVISION,&revision)) ||
+(error=pcibios_read_config_byte(bus, device_fn, PCI_INTERRUPT_LINE, &irq)) ||
+(error=pcibios_read_config_byte(bus, device_fn, PCI_CACHE_LINE_SIZE, &cache_line_size)) ||
+(error=pcibios_read_config_byte(bus, device_fn, PCI_LATENCY_TIMER, &latency_timer))
+ )
+ goto err_pcibios;
+ /*
+ * Check if the chip is supported
+ */
+ 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 = &ncrchip;
+ memcpy(chip, &ncr_chip_table[i], sizeof(*chip));
+ chip->revision_id = revision;
+ break;
+ }
+ if (!chip) {
+ printk("ncr53c8xx: not initializing, device not supported\n");
+ return -1;
+ }
- if (command & PCI_COMMAND_IO) {
- if ((io_port & 3) != 1) {
- printk("ncr53c8xx : disabling I/O mapping since base address 0 (0x%x)\n"
- " bits 0..1 indicate a non-IO mapping\n", (int) io_port);
- io_port = 0;
- }
- else
- io_port &= PCI_BASE_ADDRESS_IO_MASK;
- }
- else
- io_port = 0;
+ /*
+ * Check availability of IO space, memory space and master capability.
+ */
+ if (command & PCI_COMMAND_IO) {
+ if ((io_port & 3) != 1) {
+ printk("ncr53c8xx: disabling I/O mapping since base address 0 (0x%x)\n"
+ " bits 0..1 indicate a non-IO mapping\n", (int) io_port);
+ io_port = 0;
+ }
+ else
+ io_port &= PCI_BASE_ADDRESS_IO_MASK;
+ }
+ else
+ io_port = 0;
- if (command & PCI_COMMAND_MEMORY) {
- if ((base & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
- printk("ncr53c8xx: disabling memory mapping since base address 1\n"
- " contains a non-memory mapping\n");
- base = 0;
- }
- else
- base &= PCI_BASE_ADDRESS_MEM_MASK;
- }
- else
- base = 0;
+ if (command & PCI_COMMAND_MEMORY) {
+ if ((base & PCI_BASE_ADDRESS_SPACE) != PCI_BASE_ADDRESS_SPACE_MEMORY) {
+ printk("ncr53c8xx: disabling memory mapping since base address 1\n"
+ " contains a non-memory mapping\n");
+ base = 0;
+ }
+ else
+ base &= PCI_BASE_ADDRESS_MEM_MASK;
+ }
+ else
+ base = 0;
- if (!io_port && !base) {
- printk("ncr53c8xx: not initializing, both I/O and memory mappings disabled\n");
- return -1;
- }
+ if (!io_port && !base) {
+ printk("ncr53c8xx: not initializing, both I/O and memory mappings disabled\n");
+ return -1;
+ }
+
+ if (io_port && check_region (io_port, 128)) {
+ printk("ncr53c8xx: IO region 0x%x to 0x%x is in use\n",
+ (int) io_port, (int) (io_port + 127));
+ return -1;
+ }
- if (!(command & PCI_COMMAND_MASTER)) {
- printk ("ncr53c8xx: not initializing, BUS MASTERING was disabled\n");
- return -1;
- }
+ if (!(command & PCI_COMMAND_MASTER)) {
+ printk("ncr53c8xx: not initializing, BUS MASTERING was disabled\n");
+ return -1;
+ }
- for (i = 0; i < NPCI_CHIP_IDS; ++i) {
- if (device_id == pci_chip_ids[i].pci_device_id) {
- max_revision = pci_chip_ids[i].max_revision;
- min_revision = pci_chip_ids[i].min_revision;
- expected_chip = pci_chip_ids[i].chip;
- }
- if (chip == pci_chip_ids[i].chip)
- expected_id = pci_chip_ids[i].pci_device_id;
- }
+ /*
+ * Remove not wished features.
+ */
+ if (!driver_setup.special_features)
+ chip->features &= ~_F_SPECIAL_SET;
+ if (driver_setup.ultra_scsi < 2 && chip->features & _F_ULTRA2)
+ chip->features &= ~(_F_ULTRA2 | _F_ULTRA);
+ if (driver_setup.ultra_scsi < 1)
+ chip->features &= ~_F_ULTRA;
+ if (!driver_setup.max_wide)
+ chip->features &= ~_F_WIDE;
- if (chip && device_id != expected_id)
- printk("ncr53c8xx: warning : device id of 0x%04x doesn't\n"
- " match expected 0x%04x\n",
- (unsigned int) device_id, (unsigned int) expected_id );
-
- if (io_port && check_region (io_port, 128)) {
- printk("ncr53c8xx: IO region 0x%x to 0x%x is in use\n",
- (int) io_port, (int) (io_port + 127));
- return -1;
- }
+ /*
+ * Try to fix up PCI config according to wished features.
+ */
+#ifdef __i386
+ if ((driver_setup.pci_fix_up & 1) &&
+ (chip->features & _F_CLSE) && cache_line_size == 0) {
+ extern char x86;
+ switch(x86) {
+ case 4: cache_line_size = 4; break;
+ case 5: cache_line_size = 8; break;
+ }
+ if (cache_line_size)
+ error = pcibios_write_config_byte(bus, device_fn, PCI_CACHE_LINE_SIZE, cache_line_size);
+ if (error)
+ goto err_pcibios;
+ if (bootverbose)
+ printk("ncr53c8xx: setting PCI_CACHE_LINE_SIZE to %d (fix-up).\n", cache_line_size);
+ }
+
+ if ((driver_setup.pci_fix_up & 2) && cache_line_size &&
+ (chip->features & _F_WRIE) && !(command & PCI_COMMAND_INVALIDATE)) {
+ command |= PCI_COMMAND_INVALIDATE;
+ error=pcibios_write_config_word(bus, device_fn, PCI_COMMAND, command);
+ if (error)
+ goto err_pcibios;
+ if (bootverbose)
+ printk("ncr53c8xx: setting PCI_COMMAND_INVALIDATE bit (fix-up).\n");
+ }
+#endif
+ /*
+ * Remove features that will not work
+ */
+ if ((chip->features & _F_CLSE) && cache_line_size == 0) {
+ chip->features &= ~_F_CACHE_SET;
+ printk("ncr53c8xx: PCI_CACHE_LINE_SIZE not set, features based on CACHE LINE SIZE not used.\n");
+ }
+
+ if ((chip->features & _F_WRIE) && !(command & PCI_COMMAND_INVALIDATE)) {
+ chip->features &= ~_F_WRIE;
+ printk("ncr53c8xx: PCI_COMMAND_INVALIDATE not set, WRITE AND INVALIDATE not used\n");
+ }
- return ncr_attach (tpnt, unit, device_id, revision, chip, base, io_port,
- (int) irq, bus, (uchar) device_fn);
+ /*
+ * Try to attach the controller
+ */
+ return ncr_attach (tpnt, unit, chip, base, io_port, (int) irq,
+ bus, (uchar) device_fn);
+err_pcibios:
+ printk("ncr53c8xx: error %s reading configuration space\n",
+ pcibios_strerror(error));
+ return -1;
}
#if LINUX_VERSION_CODE >= LinuxVersionCode(2,0,0)
@@ -8527,7 +8601,7 @@
device->queue_depth = 1;
#endif
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printk("ncr53c8xx_select_queue_depth: id=%d, lun=%d, queue_depth=%d\n",
device->id, device->lun, device->queue_depth);
#endif
@@ -8543,19 +8617,19 @@
int ncr53c8xx_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
{
int sts;
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printk("ncr53c8xx_queue_command\n");
#endif
if ((sts = ncr_queue_command(cmd, done)) != DID_OK) {
cmd->result = ScsiResult(sts, 0);
done(cmd);
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printk("ncr53c8xx : command not queued - result=%d\n", sts);
#endif
return sts;
}
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printk("ncr53c8xx : command successfully queued\n");
#endif
return sts;
@@ -8573,8 +8647,13 @@
{
struct Scsi_Host *host;
struct host_data *host_data;
+#if 0
+ u_long flags;
+
+ save_flags(flags); cli();
+#endif
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printk("ncr53c8xx : interrupt received\n");
#endif
@@ -8583,12 +8662,20 @@
host_data = (struct host_data *) host->hostdata;
#if LINUX_VERSION_CODE >= LinuxVersionCode(1,3,70)
# ifdef SCSI_NCR_SHARE_IRQ
- if (dev_id == host_data->ncb)
+ if (dev_id == host_data->ncb) {
+#else
+ if (1) {
# endif
#endif
- ncr_intr(host_data->ncb);
+ if (DEBUG_FLAGS & DEBUG_TINY) printf ("[");
+ ncr_exception(host_data->ncb);
+ if (DEBUG_FLAGS & DEBUG_TINY) printf ("]\n");
+ }
}
}
+#if 0
+ restore_flags(flags);
+#endif
}
/*
@@ -8696,7 +8783,7 @@
int ncr53c8xx_release(struct Scsi_Host *host)
{
struct host_data *host_data;
-#ifdef DEBUG
+#ifdef DEBUG_NCR53C8XX
printk("ncr53c8xx : release\n");
#endif
@@ -8847,6 +8934,8 @@
**=========================================================================
*/
+#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
+
#define is_digit(c) ((c) >= '0' && (c) <= '9')
#define digit_to_bin(c) ((c) - '0')
#define is_space(c) ((c) == ' ' || (c) == '\t')
@@ -8928,6 +9017,10 @@
uc->cmd = UC_SETFLAG;
else if ((arg_len = is_keyword(ptr, len, "clearprof")) != 0)
uc->cmd = UC_CLEARPROF;
+#ifdef UC_DEBUG_ERROR_RECOVERY
+ else if ((arg_len = is_keyword(ptr, len, "debug_error_recovery")) != 0)
+ uc->cmd = UC_DEBUG_ERROR_RECOVERY;
+#endif
else
arg_len = 0;
@@ -9028,13 +9121,30 @@
ptr += arg_len; len -= arg_len;
}
break;
+#ifdef UC_DEBUG_ERROR_RECOVERY
+ case UC_DEBUG_ERROR_RECOVERY:
+ SKIP_SPACES(1);
+ if ((arg_len = is_keyword(ptr, len, "sge")))
+ uc->data = 1;
+ else if ((arg_len = is_keyword(ptr, len, "abort")))
+ uc->data = 2;
+ else if ((arg_len = is_keyword(ptr, len, "reset")))
+ uc->data = 3;
+ else if ((arg_len = is_keyword(ptr, len, "parity")))
+ uc->data = 4;
+ else if ((arg_len = is_keyword(ptr, len, "none")))
+ uc->data = 0;
+ else
+ return -EINVAL;
+ ptr += arg_len; len -= arg_len;
+ break;
+#endif
default:
break;
}
if (len)
return -EINVAL;
-#ifdef SCSI_NCR_USER_COMMAND
else {
long flags;
@@ -9042,10 +9152,13 @@
ncr_usercmd (np);
restore_flags(flags);
}
-#endif
return length;
}
+#endif /* SCSI_NCR_USER_COMMAND_SUPPORT */
+
+#ifdef SCSI_NCR_USER_INFO_SUPPORT
+
struct info_str
{
char *buffer;
@@ -9104,7 +9217,7 @@
info.pos = 0;
copy_info(&info, "General information:\n");
- copy_info(&info, " Chip NCR53C%03d, ", np->chip);
+ copy_info(&info, " Chip NCR53C%s, ", np->chip_name);
copy_info(&info, "device id 0x%x, ", np->device_id);
copy_info(&info, "revision id 0x%x\n", np->revision_id);
@@ -9124,7 +9237,7 @@
copy_info(&info, "verbosity level %d\n", driver_setup.verbose);
}
-#ifdef SCSI_NCR_PROFILE
+#ifdef SCSI_NCR_PROFILE_SUPPORT
copy_info(&info, "Profiling information:\n");
copy_info(&info, " %-12s = %lu\n", "num_trans",np->profile.num_trans);
copy_info(&info, " %-12s = %lu\n", "num_kbytes",np->profile.num_kbytes);
@@ -9141,6 +9254,8 @@
return info.pos > info.offset? info.pos - info.offset : 0;
}
+#endif /* SCSI_NCR_USER_INFO_SUPPORT */
+
/*
** Entry point of the scsi proc fs of the driver.
** - func = 0 means read (returns profile data)
@@ -9171,19 +9286,25 @@
return -EINVAL;
if (func) {
+#ifdef SCSI_NCR_USER_COMMAND_SUPPORT
retv = ncr_user_command(ncb, buffer, length);
-#ifdef DEBUG_PROC_INFO
-printf("ncr_user_command: retv=%d\n", retv);
+#else
+ retv = -EINVAL;
#endif
}
else {
if (start)
*start = buffer;
+#ifdef SCSI_NCR_USER_INFO_SUPPORT
retv = ncr_host_info(ncb, buffer, offset, length);
+#else
+ retv = -EINVAL;
+#endif
}
return retv;
}
+
/*=========================================================================
** End of proc file system stuff
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov