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IB/qib: Add a few new SERDES tunings

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Add new SERDES tuning to aid manufacturing.

Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Mike Marciniszyn
2011-01-10 17:42:21 -08:00
committed by Roland Dreier
parent f73df408b2
commit e706203c7c
1 changed files with 26 additions and 3 deletions
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29
drivers/infiniband/hw/qib/qib_iba7322.c
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@@ -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_TABLE_SZ 16 /* number of entries per speed in onchip table */
#define TXDDS_EXTRA_SZ 13 /* number of extra tx settings entries */ #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 SERDES_CHANS 4 /* yes, it's obvious, but one less magic number */
#define H1_FORCE_VAL 8 #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; u32 pidx, unit, port, deflt, h1;
unsigned long val; unsigned long val;
int any = 0, seth1; int any = 0, seth1;
int txdds_size;
str = txselect_list; 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) for (pidx = 0; pidx < dd->num_pports; ++pidx)
dd->pport[pidx].cpspec->no_eep = deflt; 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]) { while (*nxt && nxt[1]) {
str = ++nxt; str = ++nxt;
unit = simple_strtoul(str, &nxt, 0); unit = simple_strtoul(str, &nxt, 0);
@@ -5653,7 +5659,7 @@ static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
; ;
continue; continue;
} }
if (val >= TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ) if (val >= txdds_size)
continue; continue;
seth1 = 0; seth1 = 0;
h1 = 0; /* gcc thinks it might be used uninitted */ 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; return -ENOSPC;
} }
val = simple_strtoul(str, &n, 0); 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 printk(KERN_INFO QIB_DRV_NAME
"txselect_values must start with a number < %d\n", "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; return -EINVAL;
} }
strcpy(txselect_list, str); 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 */ { 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, static const struct txdds_ent *get_atten_table(const struct txdds_ent *txdds,
unsigned atten) unsigned atten)
{ {
@@ -7112,6 +7125,16 @@ static void find_best_ent(struct qib_pportdata *ppd,
*sdr_dds = &txdds_extra_sdr[idx]; *sdr_dds = &txdds_extra_sdr[idx];
*ddr_dds = &txdds_extra_ddr[idx]; *ddr_dds = &txdds_extra_ddr[idx];
*qdr_dds = &txdds_extra_qdr[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 { } else {
/* this shouldn't happen, it's range checked */ /* this shouldn't happen, it's range checked */
*sdr_dds = txdds_sdr + qib_long_atten; *sdr_dds = txdds_sdr + qib_long_atten;