1 files changed, 53 insertions, 9 deletions

diff --git a/drivers/bus/dpaa/base/fman/fman_hw.c b/drivers/bus/dpaa/base/fman/fman_hw.c
index 0148b98e..4ebbc3d3 100644
--- a/drivers/bus/dpaa/base/fman/fman_hw.c
+++ b/drivers/bus/dpaa/base/fman/fman_hw.c
@@ -16,6 +16,9 @@
 #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
  * <fsl_fman.h>) depends on.
  */
@@ -422,20 +425,16 @@ 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 +501,16 @@ 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
@@ -536,6 +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)
 {