From 0975e5df8380b82fd74997997221447e565efc2b Mon Sep 17 00:00:00 2001 From: Hemant Agrawal Date: Fri, 6 Jul 2018 13:40:00 +0530 Subject: [PATCH] bus/dpaa: fix buffer offset setting in FMAN The buffer offset was incorrectly being set at 64, thus not honoring the packet headroom. Fixes: 6d6b4f49a155 ("bus/dpaa: add FMAN hardware operations") Cc: stable@dpdk.org Signed-off-by: Hemant Agrawal Acked-by: Shreyansh Jain --- drivers/bus/dpaa/base/fman/fman_hw.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/bus/dpaa/base/fman/fman_hw.c b/drivers/bus/dpaa/base/fman/fman_hw.c index 0148b98e7a..7ada7fa477 100644 --- a/drivers/bus/dpaa/base/fman/fman_hw.c +++ b/drivers/bus/dpaa/base/fman/fman_hw.c @@ -16,6 +16,8 @@ #include #include +#define FMAN_SP_EXT_BUF_MARG_START_SHIFT 16 + /* Instantiate the global variable that the inline CRC64 implementation (in * ) depends on. */ @@ -422,20 +424,16 @@ fman_if_set_fc_quanta(struct fman_if *fm_if, u16 pause_quanta) int fman_if_get_fdoff(struct fman_if *fm_if) { - u32 fmbm_ricp; + u32 fmbm_rebm; int fdoff; - int iceof_mask = 0x001f0000; - int icsz_mask = 0x0000001f; struct __fman_if *__if = container_of(fm_if, struct __fman_if, __if); assert(fman_ccsr_map_fd != -1); - fmbm_ricp = - in_be32(&((struct rx_bmi_regs *)__if->bmi_map)->fmbm_ricp); - /*iceof + icsz*/ - fdoff = ((fmbm_ricp & iceof_mask) >> 16) * 16 + - (fmbm_ricp & icsz_mask) * 16; + fmbm_rebm = in_be32(&((struct rx_bmi_regs *)__if->bmi_map)->fmbm_rebm); + + fdoff = (fmbm_rebm >> FMAN_SP_EXT_BUF_MARG_START_SHIFT) & 0x1ff; return fdoff; } @@ -502,12 +500,16 @@ fman_if_set_fdoff(struct fman_if *fm_if, uint32_t fd_offset) { struct __fman_if *__if = container_of(fm_if, struct __fman_if, __if); unsigned int *fmbm_rebm; + int val = 0; + int fmbm_mask = 0x01ff0000; + + val = fd_offset << FMAN_SP_EXT_BUF_MARG_START_SHIFT; assert(fman_ccsr_map_fd != -1); fmbm_rebm = &((struct rx_bmi_regs *)__if->bmi_map)->fmbm_rebm; - out_be32(fmbm_rebm, in_be32(fmbm_rebm) | (fd_offset << 16)); + out_be32(fmbm_rebm, (in_be32(fmbm_rebm) & ~fmbm_mask) | val); } void -- 2.20.1