diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0040-fsl_qbman-usdpaa-Invalidate-software-portals-before-.patch')
-rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0040-fsl_qbman-usdpaa-Invalidate-software-portals-before-.patch | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0040-fsl_qbman-usdpaa-Invalidate-software-portals-before-.patch b/target/linux/layerscape/patches-5.4/701-net-0040-fsl_qbman-usdpaa-Invalidate-software-portals-before-.patch deleted file mode 100644 index 5148f444dc..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0040-fsl_qbman-usdpaa-Invalidate-software-portals-before-.patch +++ /dev/null @@ -1,64 +0,0 @@ -From 6506f95ad4d47500275c2f3a48abb7f3de11c54b Mon Sep 17 00:00:00 2001 -From: Roy Pledge <roy.pledge@nxp.com> -Date: Thu, 25 May 2017 16:59:08 -0400 -Subject: [PATCH] fsl_qbman/usdpaa: Invalidate software portals before use - -Invalidate the cache for the software portals before using them -since the portals are non coherent. This ensures that the core -using the portal is seeing the most up to date information in -case the cache contained older data. This is important during -the cleanup phase if cleanup occurs on a differnt core than -what the application was using. - -Signed-off-by: Roy Pledge <roy.pledge@nxp.com> ---- - drivers/staging/fsl_qbman/fsl_usdpaa.c | 24 ++++++++++++++++++++++++ - 1 file changed, 24 insertions(+) - ---- a/drivers/staging/fsl_qbman/fsl_usdpaa.c -+++ b/drivers/staging/fsl_qbman/fsl_usdpaa.c -@@ -371,6 +371,16 @@ static int usdpaa_open(struct inode *ino - - #define DQRR_MAXFILL 15 - -+ -+/* Invalidate a portal */ -+void dbci_portal(void *addr) -+{ -+ int i; -+ -+ for (i = 0; i < 0x4000; i += 64) -+ dcbi(addr + i); -+} -+ - /* Reset a QMan portal to its default state */ - static int init_qm_portal(struct qm_portal_config *config, - struct qm_portal *portal) -@@ -384,6 +394,13 @@ static int init_qm_portal(struct qm_port - /* Make sure interrupts are inhibited */ - qm_out(IIR, 1); - -+ /* -+ * Invalidate the entire CE portal are to ensure no stale -+ * cachelines are present. This should be done on all -+ * cores as the portal is mapped as M=0 (non-coherent). -+ */ -+ on_each_cpu(dbci_portal, portal->addr.addr_ce, 1); -+ - /* Initialize the DQRR. This will stop any dequeue - commands that are in progress */ - if (qm_dqrr_init(portal, config, qm_dqrr_dpush, qm_dqrr_pvb, -@@ -435,6 +452,13 @@ static int init_bm_portal(struct bm_port - portal->addr.addr_ce = config->addr_virt[DPA_PORTAL_CE]; - portal->addr.addr_ci = config->addr_virt[DPA_PORTAL_CI]; - -+ /* -+ * Invalidate the entire CE portal are to ensure no stale -+ * cachelines are present. This should be done on all -+ * cores as the portal is mapped as M=0 (non-coherent). -+ */ -+ on_each_cpu(dbci_portal, portal->addr.addr_ce, 1); -+ - if (bm_rcr_init(portal, bm_rcr_pvb, bm_rcr_cce)) { - pr_err("Bman RCR initialisation failed\n"); - return 1; |