From e706203c7c1cff8c27f9ce6d58911014a6bd826c Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Mon, 10 Jan 2011 17:42:21 -0800 Subject: [PATCH] IB/qib: Add a few new SERDES tunings Add new SERDES tuning to aid manufacturing. Signed-off-by: Mike Marciniszyn Signed-off-by: Roland Dreier --- drivers/infiniband/hw/qib/qib_iba7322.c | 29 ++++++++++++++++++++++--- 1 file changed, 26 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index d23297a307aa..a9c8c7235fcd 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; -- 2.34.1