* PATCH [3/11] qla2xxx: NVRAM updates
@ 2004-12-09 7:34 Andrew Vasquez
0 siblings, 0 replies; only message in thread
From: Andrew Vasquez @ 2004-12-09 7:34 UTC (permalink / raw)
To: James Bottomley, Linux-SCSI Mailing List; +Cc: Andrew Vasquez
ChangeSet
1.2237 04/12/08 14:24:05 andrew.vasquez@qlogic.com +4 -0
Address several NVRAM access issues:
o Add support for write-protected NVRAM chips used with
ISP2322 and ISP6322.
o Correct code to not perform an erase data during NVRAM
update.
o Correct issuance of NVRAM delay after PCI posting call.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
drivers/scsi/qla2xxx/qla_def.h | 2
drivers/scsi/qla2xxx/qla_gbl.h | 1
drivers/scsi/qla2xxx/qla_os.c | 1
drivers/scsi/qla2xxx/qla_sup.c | 93 ++++++++++++++++++++++++++---------------
4 files changed, 64 insertions(+), 33 deletions(-)
diff -Nru a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
--- a/drivers/scsi/qla2xxx/qla_def.h 2004-12-08 22:13:14 -08:00
+++ b/drivers/scsi/qla2xxx/qla_def.h 2004-12-08 22:13:14 -08:00
@@ -346,6 +346,8 @@
volatile uint16_t nvram; /* NVRAM register. */
#define NVR_DESELECT 0
#define NVR_BUSY BIT_15
+#define NVR_WRT_ENABLE BIT_14 /* Write enable */
+#define NVR_PR_ENABLE BIT_13 /* Protection register enable */
#define NVR_DATA_IN BIT_3
#define NVR_DATA_OUT BIT_2
#define NVR_SELECT BIT_1
diff -Nru a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
--- a/drivers/scsi/qla2xxx/qla_gbl.h 2004-12-08 22:13:14 -08:00
+++ b/drivers/scsi/qla2xxx/qla_gbl.h 2004-12-08 22:13:14 -08:00
@@ -212,6 +212,7 @@
*/
extern void qla2x00_lock_nvram_access(scsi_qla_host_t *);
extern void qla2x00_unlock_nvram_access(scsi_qla_host_t *);
+extern void qla2x00_release_nvram_protection(scsi_qla_host_t *);
extern uint16_t qla2x00_get_nvram_word(scsi_qla_host_t *, uint32_t);
extern void qla2x00_write_nvram_word(scsi_qla_host_t *, uint32_t, uint16_t);
/*
diff -Nru a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
--- a/drivers/scsi/qla2xxx/qla_os.c 2004-12-08 22:13:14 -08:00
+++ b/drivers/scsi/qla2xxx/qla_os.c 2004-12-08 22:13:14 -08:00
@@ -566,6 +566,7 @@
/* Write NVRAM. */
spin_lock_irqsave(&ha->hardware_lock, flags);
qla2x00_lock_nvram_access(ha);
+ qla2x00_release_nvram_protection(ha);
witer = (uint16_t *)buf;
for (cnt = 0; cnt < count / 2; cnt++) {
qla2x00_write_nvram_word(ha, cnt+ha->nvram_base,
diff -Nru a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c
--- a/drivers/scsi/qla2xxx/qla_sup.c 2004-12-08 22:13:14 -08:00
+++ b/drivers/scsi/qla2xxx/qla_sup.c 2004-12-08 22:13:14 -08:00
@@ -26,7 +26,6 @@
static void qla2x00_nv_deselect(scsi_qla_host_t *);
static void qla2x00_nv_write(scsi_qla_host_t *, uint16_t);
-
/*
* NVRAM support routines
*/
@@ -80,6 +79,56 @@
}
/**
+ * qla2x00_release_nvram_protection() -
+ * @ha: HA context
+ */
+void
+qla2x00_release_nvram_protection(scsi_qla_host_t *ha)
+{
+ device_reg_t *reg;
+ uint32_t word;
+
+ reg = ha->iobase;
+
+ /* Release NVRAM write protection. */
+ if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
+ /* Write enable. */
+ qla2x00_nv_write(ha, NVR_DATA_OUT);
+ qla2x00_nv_write(ha, 0);
+ qla2x00_nv_write(ha, 0);
+ for (word = 0; word < 8; word++)
+ qla2x00_nv_write(ha, NVR_DATA_OUT);
+
+ qla2x00_nv_deselect(ha);
+
+ /* Enable protection register. */
+ qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
+ qla2x00_nv_write(ha, NVR_PR_ENABLE);
+ qla2x00_nv_write(ha, NVR_PR_ENABLE);
+ for (word = 0; word < 8; word++)
+ qla2x00_nv_write(ha, NVR_DATA_OUT | NVR_PR_ENABLE);
+
+ qla2x00_nv_deselect(ha);
+
+ /* Clear protection register (ffff is cleared). */
+ qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
+ qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
+ qla2x00_nv_write(ha, NVR_PR_ENABLE | NVR_DATA_OUT);
+ for (word = 0; word < 8; word++)
+ qla2x00_nv_write(ha, NVR_DATA_OUT | NVR_PR_ENABLE);
+
+ qla2x00_nv_deselect(ha);
+
+ /* Wait for NVRAM to become ready. */
+ WRT_REG_WORD(®->nvram, NVR_SELECT);
+ do {
+ NVRAM_DELAY();
+ word = RD_REG_WORD(®->nvram);
+ } while ((word & NVR_DATA_IN) == 0);
+ }
+}
+
+/**
* qla2x00_get_nvram_word() - Calculates word position in NVRAM and calls the
* request routine to get the word from NVRAM.
* @ha: HA context
@@ -123,29 +172,6 @@
qla2x00_nv_deselect(ha);
- /* Erase Location */
- nv_cmd = (addr << 16) | NV_ERASE_OP;
- nv_cmd <<= 5;
- for (count = 0; count < 11; count++) {
- if (nv_cmd & BIT_31)
- qla2x00_nv_write(ha, NVR_DATA_OUT);
- else
- qla2x00_nv_write(ha, 0);
-
- nv_cmd <<= 1;
- }
-
- qla2x00_nv_deselect(ha);
-
- /* Wait for Erase to Finish */
- WRT_REG_WORD(®->nvram, NVR_SELECT);
- do {
- NVRAM_DELAY();
- word = RD_REG_WORD(®->nvram);
- } while ((word & NVR_DATA_IN) == 0);
-
- qla2x00_nv_deselect(ha);
-
/* Write data */
nv_cmd = (addr << 16) | NV_WRITE_OP;
nv_cmd |= data;
@@ -220,14 +246,14 @@
if (reg_data & NVR_DATA_IN)
data |= BIT_0;
WRT_REG_WORD(®->nvram, NVR_SELECT);
- NVRAM_DELAY();
RD_REG_WORD(®->nvram); /* PCI Posting. */
+ NVRAM_DELAY();
}
/* Deselect chip. */
WRT_REG_WORD(®->nvram, NVR_DESELECT);
- NVRAM_DELAY();
RD_REG_WORD(®->nvram); /* PCI Posting. */
+ NVRAM_DELAY();
return (data);
}
@@ -236,14 +262,14 @@
* qla2x00_nv_write() - Clean NVRAM operations.
* @ha: HA context
*/
-void
+static void
qla2x00_nv_deselect(scsi_qla_host_t *ha)
{
device_reg_t __iomem *reg = ha->iobase;
WRT_REG_WORD(®->nvram, NVR_DESELECT);
- NVRAM_DELAY();
RD_REG_WORD(®->nvram); /* PCI Posting. */
+ NVRAM_DELAY();
}
/**
@@ -251,19 +277,20 @@
* @ha: HA context
* @data: Serial interface selector
*/
-void
+static void
qla2x00_nv_write(scsi_qla_host_t *ha, uint16_t data)
{
device_reg_t __iomem *reg = ha->iobase;
- WRT_REG_WORD(®->nvram, data | NVR_SELECT);
- NVRAM_DELAY();
+ WRT_REG_WORD(®->nvram, data | NVR_SELECT | NVR_WRT_ENABLE);
RD_REG_WORD(®->nvram); /* PCI Posting. */
- WRT_REG_WORD(®->nvram, data | NVR_SELECT | NVR_CLOCK);
NVRAM_DELAY();
+ WRT_REG_WORD(®->nvram, data | NVR_SELECT| NVR_CLOCK |
+ NVR_WRT_ENABLE);
RD_REG_WORD(®->nvram); /* PCI Posting. */
- WRT_REG_WORD(®->nvram, data | NVR_SELECT);
NVRAM_DELAY();
+ WRT_REG_WORD(®->nvram, data | NVR_SELECT | NVR_WRT_ENABLE);
RD_REG_WORD(®->nvram); /* PCI Posting. */
+ NVRAM_DELAY();
}
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2004-12-09 7:34 PATCH [3/11] qla2xxx: NVRAM updates Andrew Vasquez
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