diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0039-staging-fsl_qbman-Calculate-valid-bit-from-MC-RR.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0039-staging-fsl_qbman-Calculate-valid-bit-from-MC-RR.patch | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0039-staging-fsl_qbman-Calculate-valid-bit-from-MC-RR.patch b/target/linux/layerscape/patches-5.4/701-net-0039-staging-fsl_qbman-Calculate-valid-bit-from-MC-RR.patch deleted file mode 100644 index 1e4cfe8069..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0039-staging-fsl_qbman-Calculate-valid-bit-from-MC-RR.patch +++ /dev/null @@ -1,47 +0,0 @@ -From 5ebee96094c5a97a89a986108242cca9d853ff55 Mon Sep 17 00:00:00 2001 -From: Roy Pledge <roy.pledge@nxp.com> -Date: Wed, 27 Sep 2017 14:50:08 -0400 -Subject: [PATCH] staging/fsl_qbman: Calculate valid bit from MC-RR - -Use the management commmand response registers to determine -the next expected valid bit when initializing a software -portal. This avoids using the wrong valid bit in cases -where a command was partially written but then not -completed. - -Signed-off-by: Roy Pledge <roy.pledge@nxp.com> ---- - drivers/staging/fsl_qbman/qman_low.h | 19 +++++++++++++++++-- - 1 file changed, 17 insertions(+), 2 deletions(-) - ---- a/drivers/staging/fsl_qbman/qman_low.h -+++ b/drivers/staging/fsl_qbman/qman_low.h -@@ -1095,11 +1095,26 @@ static inline void qm_mr_set_ithresh(str - - static inline int qm_mc_init(struct qm_portal *portal) - { -+ u8 rr0, rr1; - register struct qm_mc *mc = &portal->mc; -+ - mc->cr = portal->addr.addr_ce + QM_CL_CR; - mc->rr = portal->addr.addr_ce + QM_CL_RR0; -- mc->rridx = (__raw_readb(&mc->cr->__dont_write_directly__verb) & -- QM_MCC_VERB_VBIT) ? 0 : 1; -+ -+ /* -+ * The expected valid bit polarity for the next CR command is 0 -+ * if RR1 contains a valid response, and is 1 if RR0 contains a -+ * valid response. If both RR contain all 0, this indicates either -+ * that no command has been executed since reset (in which case the -+ * expected valid bit polarity is 1) -+ */ -+ rr0 = __raw_readb(&mc->rr->verb); -+ rr1 = __raw_readb(&(mc->rr+1)->verb); -+ if ((rr0 == 0 && rr1 == 0) || rr0 != 0) -+ mc->rridx = 1; -+ else -+ mc->rridx = 0; -+ - mc->vbit = mc->rridx ? QM_MCC_VERB_VBIT : 0; - #ifdef CONFIG_FSL_DPA_CHECKING - mc->state = qman_mc_idle; |