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Commit e706203c authored by Mike Marciniszyn's avatar Mike Marciniszyn Committed by Roland Dreier
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IB/qib: Add a few new SERDES tunings 



Add new SERDES tuning to aid manufacturing.

Signed-off-by: default avatarMike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent f73df408

drivers/infiniband/hw/qib/qib_iba7322.c

+26 −3
Original line number Diff line number Diff line
@@ -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;