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authorMike Marciniszyn <mike.marciniszyn@qlogic.com>2011-01-10 17:42:21 -0800
committerRoland Dreier <rolandd@cisco.com>2011-01-10 17:42:21 -0800
commite706203c7c1cff8c27f9ce6d58911014a6bd826c (patch)
treed6dbf93ed8cc4f777b1857b3de8495bad922569d /drivers/infiniband/hw
parentf73df408b299e4bc5ed66cc50058585af64a8f9e (diff)
downloadop-kernel-dev-e706203c7c1cff8c27f9ce6d58911014a6bd826c.zip
op-kernel-dev-e706203c7c1cff8c27f9ce6d58911014a6bd826c.tar.gz
IB/qib: Add a few new SERDES tunings
Add new SERDES tuning to aid manufacturing. Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw')
-rw-r--r--drivers/infiniband/hw/qib/qib_iba7322.c29
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index d23297a..a9c8c72 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -562,6 +562,7 @@ static void write_tx_serdes_param(struct qib_pportdata *, struct txdds_ent *);
#define TXDDS_TABLE_SZ 16 /* number of entries per speed in onchip table */
#define TXDDS_EXTRA_SZ 13 /* number of extra tx settings entries */
+#define TXDDS_MFG_SZ 2 /* number of mfg tx settings entries */
#define SERDES_CHANS 4 /* yes, it's obvious, but one less magic number */
#define H1_FORCE_VAL 8
@@ -5623,6 +5624,7 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
u32 pidx, unit, port, deflt, h1;
unsigned long val;
int any = 0, seth1;
+ int txdds_size;
str = txselect_list;
@@ -5631,6 +5633,10 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
for (pidx = 0; pidx < dd->num_pports; ++pidx)
dd->pport[pidx].cpspec->no_eep = deflt;
+ txdds_size = TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ;
+ if (IS_QME(dd) || IS_QMH(dd))
+ txdds_size += TXDDS_MFG_SZ;
+
while (*nxt && nxt[1]) {
str = ++nxt;
unit = simple_strtoul(str, &nxt, 0);
@@ -5653,7 +5659,7 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
;
continue;
}
- if (val >= TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)
+ if (val >= txdds_size)
continue;
seth1 = 0;
h1 = 0; /* gcc thinks it might be used uninitted */
@@ -5705,10 +5711,11 @@ static int setup_txselect(const char *str, struct kernel_param *kp)
return -ENOSPC;
}
val = simple_strtoul(str, &n, 0);
- if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)) {
+ if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
+ TXDDS_MFG_SZ)) {
printk(KERN_INFO QIB_DRV_NAME
"txselect_values must start with a number < %d\n",
- TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ);
+ TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ + TXDDS_MFG_SZ);
return -EINVAL;
}
strcpy(txselect_list, str);
@@ -7039,6 +7046,12 @@ static const struct txdds_ent txdds_extra_qdr[TXDDS_EXTRA_SZ] = {
{ 0, 1, 0, 12 }, /* QMH7342 backplane settings */
};
+static const struct txdds_ent txdds_extra_mfg[TXDDS_MFG_SZ] = {
+ /* amp, pre, main, post */
+ { 0, 0, 0, 0 }, /* QME7342 mfg settings */
+ { 0, 0, 0, 6 }, /* QME7342 P2 mfg settings */
+};
+
static const struct txdds_ent *get_atten_table(const struct txdds_ent *txdds,
unsigned atten)
{
@@ -7112,6 +7125,16 @@ static void find_best_ent(struct qib_pportdata *ppd,
*sdr_dds = &txdds_extra_sdr[idx];
*ddr_dds = &txdds_extra_ddr[idx];
*qdr_dds = &txdds_extra_qdr[idx];
+ } else if ((IS_QME(ppd->dd) || IS_QMH(ppd->dd)) &&
+ ppd->cpspec->no_eep < (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ +
+ TXDDS_MFG_SZ)) {
+ idx = ppd->cpspec->no_eep - (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ);
+ printk(KERN_INFO QIB_DRV_NAME
+ " IB%u:%u use idx %u into txdds_mfg\n",
+ ppd->dd->unit, ppd->port, idx);
+ *sdr_dds = &txdds_extra_mfg[idx];
+ *ddr_dds = &txdds_extra_mfg[idx];
+ *qdr_dds = &txdds_extra_mfg[idx];
} else {
/* this shouldn't happen, it's range checked */
*sdr_dds = txdds_sdr + qib_long_atten;
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