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path: root/drivers/scsi/sym53c8xx_2/sym_hipd.c
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-rw-r--r--drivers/scsi/sym53c8xx_2/sym_hipd.c113
1 files changed, 63 insertions, 50 deletions
diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c
index 60850cbe3a85..a671bdc07450 100644
--- a/drivers/scsi/sym53c8xx_2/sym_hipd.c
+++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c
@@ -72,7 +72,10 @@ static void sym_printl_hex(u_char *p, int n)
static void sym_print_msg(struct sym_ccb *cp, char *label, u_char *msg)
{
- sym_print_addr(cp->cmd, "%s: ", label);
+ if (label)
+ sym_print_addr(cp->cmd, "%s: ", label);
+ else
+ sym_print_addr(cp->cmd, "");
spi_print_msg(msg);
printf("\n");
@@ -472,7 +475,7 @@ static int sym_getpciclock (struct sym_hcb *np)
* calculations more simple.
*/
#define _5M 5000000
-static u32 div_10M[] = {2*_5M, 3*_5M, 4*_5M, 6*_5M, 8*_5M, 12*_5M, 16*_5M};
+static const u32 div_10M[] = {2*_5M, 3*_5M, 4*_5M, 6*_5M, 8*_5M, 12*_5M, 16*_5M};
/*
* Get clock factor and sync divisor for a given
@@ -645,6 +648,37 @@ static void sym_save_initial_setting (struct sym_hcb *np)
}
/*
+ * Set SCSI BUS mode.
+ * - LVD capable chips (895/895A/896/1010) report the current BUS mode
+ * through the STEST4 IO register.
+ * - For previous generation chips (825/825A/875), the user has to tell us
+ * how to check against HVD, since a 100% safe algorithm is not possible.
+ */
+static void sym_set_bus_mode(struct sym_hcb *np, struct sym_nvram *nvram)
+{
+ if (np->scsi_mode)
+ return;
+
+ np->scsi_mode = SMODE_SE;
+ if (np->features & (FE_ULTRA2|FE_ULTRA3))
+ np->scsi_mode = (np->sv_stest4 & SMODE);
+ else if (np->features & FE_DIFF) {
+ if (SYM_SETUP_SCSI_DIFF == 1) {
+ if (np->sv_scntl3) {
+ if (np->sv_stest2 & 0x20)
+ np->scsi_mode = SMODE_HVD;
+ } else if (nvram->type == SYM_SYMBIOS_NVRAM) {
+ if (!(INB(np, nc_gpreg) & 0x08))
+ np->scsi_mode = SMODE_HVD;
+ }
+ } else if (SYM_SETUP_SCSI_DIFF == 2)
+ np->scsi_mode = SMODE_HVD;
+ }
+ if (np->scsi_mode == SMODE_HVD)
+ np->rv_stest2 |= 0x20;
+}
+
+/*
* Prepare io register values used by sym_start_up()
* according to selected and supported features.
*/
@@ -654,10 +688,7 @@ static int sym_prepare_setting(struct Scsi_Host *shost, struct sym_hcb *np, stru
u32 period;
int i;
- /*
- * Wide ?
- */
- np->maxwide = (np->features & FE_WIDE)? 1 : 0;
+ np->maxwide = (np->features & FE_WIDE) ? 1 : 0;
/*
* Guess the frequency of the chip's clock.
@@ -838,6 +869,7 @@ static int sym_prepare_setting(struct Scsi_Host *shost, struct sym_hcb *np, stru
* Get parity checking, host ID and verbose mode from NVRAM
*/
np->myaddr = 255;
+ np->scsi_mode = 0;
sym_nvram_setup_host(shost, np, nvram);
/*
@@ -854,33 +886,7 @@ static int sym_prepare_setting(struct Scsi_Host *shost, struct sym_hcb *np, stru
*/
sym_init_burst(np, burst_max);
- /*
- * Set SCSI BUS mode.
- * - LVD capable chips (895/895A/896/1010) report the
- * current BUS mode through the STEST4 IO register.
- * - For previous generation chips (825/825A/875),
- * user has to tell us how to check against HVD,
- * since a 100% safe algorithm is not possible.
- */
- np->scsi_mode = SMODE_SE;
- if (np->features & (FE_ULTRA2|FE_ULTRA3))
- np->scsi_mode = (np->sv_stest4 & SMODE);
- else if (np->features & FE_DIFF) {
- if (SYM_SETUP_SCSI_DIFF == 1) {
- if (np->sv_scntl3) {
- if (np->sv_stest2 & 0x20)
- np->scsi_mode = SMODE_HVD;
- }
- else if (nvram->type == SYM_SYMBIOS_NVRAM) {
- if (!(INB(np, nc_gpreg) & 0x08))
- np->scsi_mode = SMODE_HVD;
- }
- }
- else if (SYM_SETUP_SCSI_DIFF == 2)
- np->scsi_mode = SMODE_HVD;
- }
- if (np->scsi_mode == SMODE_HVD)
- np->rv_stest2 |= 0x20;
+ sym_set_bus_mode(np, nvram);
/*
* Set LED support from SCRIPTS.
@@ -973,8 +979,8 @@ static int sym_prepare_setting(struct Scsi_Host *shost, struct sym_hcb *np, stru
*
* Has to be called with interrupts disabled.
*/
-#ifndef CONFIG_SCSI_SYM53C8XX_IOMAPPED
-static int sym_regtest (struct sym_hcb *np)
+#ifdef CONFIG_SCSI_SYM53C8XX_MMIO
+static int sym_regtest(struct sym_hcb *np)
{
register volatile u32 data;
/*
@@ -992,20 +998,25 @@ static int sym_regtest (struct sym_hcb *np)
#endif
printf ("CACHE TEST FAILED: reg dstat-sstat2 readback %x.\n",
(unsigned) data);
- return (0x10);
+ return 0x10;
}
- return (0);
+ return 0;
+}
+#else
+static inline int sym_regtest(struct sym_hcb *np)
+{
+ return 0;
}
#endif
-static int sym_snooptest (struct sym_hcb *np)
+static int sym_snooptest(struct sym_hcb *np)
{
- u32 sym_rd, sym_wr, sym_bk, host_rd, host_wr, pc, dstat;
- int i, err=0;
-#ifndef CONFIG_SCSI_SYM53C8XX_IOMAPPED
- err |= sym_regtest (np);
- if (err) return (err);
-#endif
+ u32 sym_rd, sym_wr, sym_bk, host_rd, host_wr, pc, dstat;
+ int i, err;
+
+ err = sym_regtest(np);
+ if (err)
+ return err;
restart_test:
/*
* Enable Master Parity Checking as we intend
@@ -1094,7 +1105,7 @@ restart_test:
err |= 4;
}
- return (err);
+ return err;
}
/*
@@ -1464,7 +1475,7 @@ static int sym_prepare_nego(struct sym_hcb *np, struct sym_ccb *cp, u_char *msgp
/*
* Insert a job into the start queue.
*/
-static void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp)
+void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp)
{
u_short qidx;
@@ -4481,7 +4492,7 @@ static void sym_int_sir (struct sym_hcb *np)
switch (np->msgin [2]) {
case M_X_MODIFY_DP:
if (DEBUG_FLAGS & DEBUG_POINTER)
- sym_print_msg(cp,"modify DP",np->msgin);
+ sym_print_msg(cp, NULL, np->msgin);
tmp = (np->msgin[3]<<24) + (np->msgin[4]<<16) +
(np->msgin[5]<<8) + (np->msgin[6]);
sym_modify_dp(np, tp, cp, tmp);
@@ -4508,7 +4519,7 @@ static void sym_int_sir (struct sym_hcb *np)
*/
case M_IGN_RESIDUE:
if (DEBUG_FLAGS & DEBUG_POINTER)
- sym_print_msg(cp,"ign wide residue", np->msgin);
+ sym_print_msg(cp, NULL, np->msgin);
if (cp->host_flags & HF_SENSE)
OUTL_DSP(np, SCRIPTA_BA(np, clrack));
else
@@ -4597,7 +4608,8 @@ struct sym_ccb *sym_get_ccb (struct sym_hcb *np, struct scsi_cmnd *cmd, u_char t
* Debugging purpose.
*/
#ifndef SYM_OPT_HANDLE_DEVICE_QUEUEING
- assert(lp->busy_itl == 0);
+ if (lp->busy_itl != 0)
+ goto out_free;
#endif
/*
* Allocate resources for tags if not yet.
@@ -4642,7 +4654,8 @@ struct sym_ccb *sym_get_ccb (struct sym_hcb *np, struct scsi_cmnd *cmd, u_char t
* Debugging purpose.
*/
#ifndef SYM_OPT_HANDLE_DEVICE_QUEUEING
- assert(lp->busy_itl == 0 && lp->busy_itlq == 0);
+ if (lp->busy_itl != 0 || lp->busy_itlq != 0)
+ goto out_free;
#endif
/*
* Count this nexus for this LUN.
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.