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Subject: [dpdk-dev] [PATCH v2 15/16] bus/dpaa: add support for SG config
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Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
drivers/bus/dpaa/base/fman/fman_hw.c | 42 +++++++++++++++++++++++++++++++
drivers/bus/dpaa/include/fsl_fman.h | 6 +++++
drivers/bus/dpaa/rte_bus_dpaa_version.map | 2 ++
3 files changed, 50 insertions(+)
diff --git a/drivers/bus/dpaa/base/fman/fman_hw.c b/drivers/bus/dpaa/base/fman/fman_hw.c
index 7ada7fa..4ebbc3d 100644
--- a/drivers/bus/dpaa/base/fman/fman_hw.c
+++ b/drivers/bus/dpaa/base/fman/fman_hw.c
@@ -16,6 +16,7 @@
#include <fsl_fman_crc64.h>
#include <fsl_bman.h>
+#define FMAN_SP_SG_DISABLE 0x80000000
#define FMAN_SP_EXT_BUF_MARG_START_SHIFT 16
/* Instantiate the global variable that the inline CRC64 implementation (in
@@ -538,6 +539,47 @@ fman_if_get_maxfrm(struct fman_if *fm_if)
return (in_be32(reg_maxfrm) | 0x0000FFFF);
}
+/* MSB in fmbm_rebm register
+ * 0 - If BMI cannot store the frame in a single buffer it may select a buffer
+ * of smaller size and store the frame in scatter gather (S/G) buffers
+ * 1 - Scatter gather format is not enabled for frame storage. If BMI cannot
+ * store the frame in a single buffer, the frame is discarded.
+ */
+
+int
+fman_if_get_sg_enable(struct fman_if *fm_if)
+{
+ u32 fmbm_rebm;
+
+ struct __fman_if *__if = container_of(fm_if, struct __fman_if, __if);
+
+ assert(fman_ccsr_map_fd != -1);
+
+ fmbm_rebm = in_be32(&((struct rx_bmi_regs *)__if->bmi_map)->fmbm_rebm);
+
+ return (fmbm_rebm & FMAN_SP_SG_DISABLE) ? 0 : 1;
+}
+
+void
+fman_if_set_sg(struct fman_if *fm_if, int enable)
+{
+ struct __fman_if *__if = container_of(fm_if, struct __fman_if, __if);
+ unsigned int *fmbm_rebm;
+ int val;
+ int fmbm_mask = FMAN_SP_SG_DISABLE;
+
+ if (enable)
+ val = 0;
+ else
+ val = FMAN_SP_SG_DISABLE;
+
+ 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) & ~fmbm_mask) | val);
+}
+
void
fman_if_set_dnia(struct fman_if *fm_if, uint32_t nia)
{
diff --git a/drivers/bus/dpaa/include/fsl_fman.h b/drivers/bus/dpaa/include/fsl_fman.h
index c0ef1bf..1d1ce86 100644
--- a/drivers/bus/dpaa/include/fsl_fman.h
+++ b/drivers/bus/dpaa/include/fsl_fman.h
@@ -108,6 +108,12 @@ int fman_if_get_fdoff(struct fman_if *fm_if);
/* Set interface fd->offset value */
void fman_if_set_fdoff(struct fman_if *fm_if, uint32_t fd_offset);
+/* Get interface SG enable status value */
+int fman_if_get_sg_enable(struct fman_if *fm_if);
+
+/* Set interface SG support mode */
+void fman_if_set_sg(struct fman_if *fm_if, int enable);
+
/* Get interface Max Frame length (MTU) */
uint16_t fman_if_get_maxfrm(struct fman_if *fm_if);
diff --git a/drivers/bus/dpaa/rte_bus_dpaa_version.map b/drivers/bus/dpaa/rte_bus_dpaa_version.map
index e00c911..fcfbb47 100644
--- a/drivers/bus/dpaa/rte_bus_dpaa_version.map
+++ b/drivers/bus/dpaa/rte_bus_dpaa_version.map
@@ -70,6 +70,8 @@ DPDK_18.02 {
dpaa_logtype_eventdev;
dpaa_svr_family;
+ fman_if_get_sg_enable;
+ fman_if_set_sg;
per_lcore_dpaa_io;
per_lcore_held_bufs;
qm_channel_pool1;
--
2.7.4