driver: fsl-mc: qbman: Add QBMAN 4.1 support

LS2080A SoC family has QBMAN ver 4.0 whereas newer
SoCs like LS2088A, LS1088A has QBMAN ver 4.1
QBMAN ver 4.0 and ver 4.1 supports dqrr size as 4 and 8 respectively.

Add support of
	to check QBMAN version based on SoC SVR
	update dqrr_size accordingly
	update code to support larger dqrr_size

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

drivers/net/fsl-mc/dpio/qbman_portal.c

@@ -25,7 +25,7 @@
 #define QBMAN_CENA_SWP_VDQCR   0x780
 
 /* Reverse mapping of QBMAN_CENA_SWP_DQRR() */
-#define QBMAN_IDX_FROM_DQRR(p) (((unsigned long)p & 0xff) >> 6)
+#define QBMAN_IDX_FROM_DQRR(p) (((unsigned long)p & 0x1ff) >> 6)
 
 /*******************************/
 /* Pre-defined attribute codes */
@@ -65,6 +65,7 @@ struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d)
 {
 	int ret;
 	struct qbman_swp *p = malloc(sizeof(struct qbman_swp));
+	u32 major = 0, minor = 0;
 
 	if (!p)
 		return NULL;
@@ -80,8 +81,20 @@ struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d)
 	atomic_set(&p->vdq.busy, 1);
 	p->vdq.valid_bit = QB_VALID_BIT;
 	p->dqrr.next_idx = 0;
+
+	qbman_version(&major, &minor);
+	if (!major) {
+		printf("invalid qbman version\n");
+		return NULL;
+	}
+
+	if (major >= 4 && minor >= 1)
+		p->dqrr.dqrr_size = QBMAN_VER_4_1_DQRR_SIZE;
+	else
+		p->dqrr.dqrr_size = QBMAN_VER_4_0_DQRR_SIZE;
+
 	p->dqrr.valid_bit = QB_VALID_BIT;
-	ret = qbman_swp_sys_init(&p->sys, d);
+	ret = qbman_swp_sys_init(&p->sys, d, p->dqrr.dqrr_size);
 	if (ret) {
 		free(p);
 		printf("qbman_swp_sys_init() failed %d\n", ret);
@@ -380,7 +393,7 @@ const struct ldpaa_dq *qbman_swp_dqrr_next(struct qbman_swp *s)
 	/* There's something there. Move "next_idx" attention to the next ring
 	 * entry (and prefetch it) before returning what we found. */
 	s->dqrr.next_idx++;
-	s->dqrr.next_idx &= QBMAN_DQRR_SIZE - 1; /* Wrap around at 4 */
+	s->dqrr.next_idx &= s->dqrr.dqrr_size - 1;/* Wrap around at dqrr_size */
 	/* TODO: it's possible to do all this without conditionals, optimise it
 	 * later. */
 	if (!s->dqrr.next_idx)

drivers/net/fsl-mc/dpio/qbman_portal.h

@@ -14,8 +14,8 @@
 /* Management command result codes */
 #define QBMAN_MC_RSLT_OK      0xf0
 
-/* TBD: as of QBMan 4.1, DQRR will be 8 rather than 4! */
-#define QBMAN_DQRR_SIZE 4
+#define QBMAN_VER_4_0_DQRR_SIZE 4
+#define QBMAN_VER_4_1_DQRR_SIZE 8
 
 
 /* --------------------- */
@@ -71,6 +71,7 @@ struct qbman_swp {
 	struct {
 		uint32_t next_idx;
 		uint32_t valid_bit;
+		uint8_t dqrr_size;
 	} dqrr;
 };
 

drivers/net/fsl-mc/dpio/qbman_private.h

@@ -11,6 +11,7 @@
 #include <linux/types.h>
 #include <asm/atomic.h>
 #include <malloc.h>
+#include <asm/arch/soc.h>
 #include <fsl-mc/fsl_qbman_base.h>
 
 #define QBMAN_CHECKING
@@ -166,4 +167,22 @@ static inline void dcbz(void *ptr)
 
 #define lwsync()
 
+void qbman_version(u32 *major, u32 *minor)
+{
+	u32 svr_dev_id;
+
+	/*
+	 * LS2080A SoC and its personalities has qbman cotroller version 4.0
+	 * New SoCs like LS2088A, LS1088A has qbman conroller version 4.1
+	 */
+	svr_dev_id = get_svr() >> 16;
+	if (svr_dev_id == SVR_DEV_LS2080A) {
+		*major = 4;
+		*minor = 0;
+	} else {
+		*major = 4;
+		*minor = 1;
+	}
+}
+
 #include "qbman_sys.h"

drivers/net/fsl-mc/dpio/qbman_sys.h

@@ -239,16 +239,18 @@ static inline uint32_t qbman_set_swp_cfg(uint8_t max_fill, uint8_t wn,
 {
 	uint32_t reg;
 
-	reg = e32_uint8_t(20, 3, max_fill) | e32_uint8_t(16, 3, est) |
-		e32_uint8_t(12, 2, rpm) | e32_uint8_t(10, 2, dcm) |
-		e32_uint8_t(8, 2, epm) | e32_int(5, 1, sd) |
-		e32_int(4, 1, sp) | e32_int(3, 1, se) | e32_int(2, 1, dp) |
-		e32_int(1, 1, de) | e32_int(0, 1, ep) |	e32_uint8_t(14, 1, wn);
+	reg = e32_uint8_t(20, (uint32_t)(3 + (max_fill >> 3)), max_fill) |
+		e32_uint8_t(16, 3, est) | e32_uint8_t(12, 2, rpm) |
+		e32_uint8_t(10, 2, dcm) | e32_uint8_t(8, 2, epm) |
+		e32_int(5, 1, sd) | e32_int(4, 1, sp) | e32_int(3, 1, se) |
+		e32_int(2, 1, dp) | e32_int(1, 1, de) | e32_int(0, 1, ep) |
+		e32_uint8_t(14, 1, wn);
 	return reg;
 }
 
 static inline int qbman_swp_sys_init(struct qbman_swp_sys *s,
-				     const struct qbman_swp_desc *d)
+				     const struct qbman_swp_desc *d,
+				     uint8_t dqrr_size)
 {
 	uint32_t reg;
 
@@ -270,9 +272,9 @@ static inline int qbman_swp_sys_init(struct qbman_swp_sys *s,
 	BUG_ON(reg);
 #endif
 #ifdef QBMAN_CINH_ONLY
-	reg = qbman_set_swp_cfg(4, 1, 0, 3, 2, 3, 0, 1, 0, 1, 0, 0);
+	reg = qbman_set_swp_cfg(dqrr_size, 1, 0, 3, 2, 3, 0, 1, 0, 1, 0, 0);
 #else
-	reg = qbman_set_swp_cfg(4, 0, 0, 3, 2, 3, 0, 1, 0, 1, 0, 0);
+	reg = qbman_set_swp_cfg(dqrr_size, 0, 0, 3, 2, 3, 0, 1, 0, 1, 0, 0);
 #endif
 	qbman_cinh_write(s, QBMAN_CINH_SWP_CFG, reg);
 	reg = qbman_cinh_read(s, QBMAN_CINH_SWP_CFG);