[dpdk-dev] [PATCH v3 05/10] bus/fslmc: add 32 bit functional support for ARM

[Hemant Agrawal <hemant.agrawal@nxp.com>]

This patch adds the functional logic to make the dpaa2 drivers
work on 32bit machine.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 drivers/bus/fslmc/qbman/qbman_sys.h      | 30 ++++++++++++++++++++++++++++--
 drivers/bus/fslmc/qbman/qbman_sys_decl.h |  9 +++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/fslmc/qbman/qbman_sys.h b/drivers/bus/fslmc/qbman/qbman_sys.h
index 846788e..2bd33ea 100644
--- a/drivers/bus/fslmc/qbman/qbman_sys.h
+++ b/drivers/bus/fslmc/qbman/qbman_sys.h
@@ -20,6 +20,9 @@
 
 #include "qbman_sys_decl.h"
 
+#define CENA_WRITE_ENABLE 0
+#define CINH_WRITE_ENABLE 1
+
 /* Debugging assists */
 static inline void __hexdump(unsigned long start, unsigned long end,
 			     unsigned long p, size_t sz, const unsigned char *c)
@@ -178,7 +181,11 @@ static inline void *qbman_cena_write_start_wo_shadow(struct qbman_swp_sys *s,
 		s->addr_cena, s->idx, offset);
 #endif
 	QBMAN_BUG_ON(offset & 63);
+#ifdef RTE_ARCH_64
 	return (s->addr_cena + offset);
+#else
+	return (s->addr_cinh + offset);
+#endif
 }
 
 static inline void qbman_cena_write_complete(struct qbman_swp_sys *s,
@@ -191,11 +198,19 @@ static inline void qbman_cena_write_complete(struct qbman_swp_sys *s,
 		s->addr_cena, s->idx, offset, shadow);
 	hexdump(cmd, 64);
 #endif
+#ifdef RTE_ARCH_64
 	for (loop = 15; loop >= 1; loop--)
 		__raw_writel(shadow[loop], s->addr_cena +
 					 offset + loop * 4);
 	lwsync();
 		__raw_writel(shadow[0], s->addr_cena + offset);
+#else
+	for (loop = 15; loop >= 1; loop--)
+		__raw_writel(shadow[loop], s->addr_cinh +
+					 offset + loop * 4);
+	lwsync();
+	__raw_writel(shadow[0], s->addr_cinh + offset);
+#endif
 	dcbf(s->addr_cena + offset);
 }
 
@@ -224,9 +239,15 @@ static inline void *qbman_cena_read(struct qbman_swp_sys *s, uint32_t offset)
 		s->addr_cena, s->idx, offset, shadow);
 #endif
 
+#ifdef RTE_ARCH_64
 	for (loop = 0; loop < 16; loop++)
 		shadow[loop] = __raw_readl(s->addr_cena + offset
 					+ loop * 4);
+#else
+	for (loop = 0; loop < 16; loop++)
+		shadow[loop] = __raw_readl(s->addr_cinh + offset
+					+ loop * 4);
+#endif
 #ifdef QBMAN_CENA_TRACE
 	hexdump(shadow, 64);
 #endif
@@ -313,6 +334,11 @@ static inline int qbman_swp_sys_init(struct qbman_swp_sys *s,
 				     uint8_t dqrr_size)
 {
 	uint32_t reg;
+#ifdef RTE_ARCH_64
+	uint8_t wn = CENA_WRITE_ENABLE;
+#else
+	uint8_t wn = CINH_WRITE_ENABLE;
+#endif
 
 	s->addr_cena = d->cena_bar;
 	s->addr_cinh = d->cinh_bar;
@@ -333,10 +359,10 @@ static inline int qbman_swp_sys_init(struct qbman_swp_sys *s,
 	QBMAN_BUG_ON(reg);
 #endif
 	if (s->eqcr_mode == qman_eqcr_vb_array)
-		reg = qbman_set_swp_cfg(dqrr_size, 0, 0, 3, 2, 3, 1, 1, 1, 1,
+		reg = qbman_set_swp_cfg(dqrr_size, wn, 0, 3, 2, 3, 1, 1, 1, 1,
 					1, 1);
 	else
-		reg = qbman_set_swp_cfg(dqrr_size, 0, 1, 3, 2, 2, 1, 1, 1, 1,
+		reg = qbman_set_swp_cfg(dqrr_size, wn, 1, 3, 2, 2, 1, 1, 1, 1,
 					1, 1);
 	qbman_cinh_write(s, QBMAN_CINH_SWP_CFG, reg);
 	reg = qbman_cinh_read(s, QBMAN_CINH_SWP_CFG);
diff --git a/drivers/bus/fslmc/qbman/qbman_sys_decl.h b/drivers/bus/fslmc/qbman/qbman_sys_decl.h
index f82bb18..5640b04 100644
--- a/drivers/bus/fslmc/qbman/qbman_sys_decl.h
+++ b/drivers/bus/fslmc/qbman/qbman_sys_decl.h
@@ -15,6 +15,7 @@
 	/****************/
 	/* arch assists */
 	/****************/
+#if defined(RTE_ARCH_ARM64)
 #define dcbz(p) { asm volatile("dc zva, %0" : : "r" (p) : "memory"); }
 #define lwsync() { asm volatile("dmb st" : : : "memory"); }
 #define dcbf(p) { asm volatile("dc cvac, %0" : : "r"(p) : "memory"); }
@@ -28,3 +29,11 @@ static inline void prefetch_for_store(void *p)
 {
 	asm volatile("prfm pstl1keep, [%0, #0]" : : "r" (p));
 }
+#elif defined(RTE_ARCH_ARM)
+#define dcbz(p) memset(p, 0, 64)
+#define lwsync() { asm volatile("dmb st" : : : "memory"); }
+#define dcbf(p)	RTE_SET_USED(p)
+#define dccivac(p)	RTE_SET_USED(p)
+#define prefetch_for_load(p) { asm volatile ("pld [%0]" : : "r" (p)); }
+#define prefetch_for_store(p) { asm volatile ("pld [%0]" : : "r" (p)); }
+#endif
-- 
2.7.4