diff options
Diffstat (limited to 'target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch')
| -rw-r--r-- | target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch b/target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch new file mode 100644 index 0000000000..210504c39e --- /dev/null +++ b/target/linux/mvebu/patches-4.4/046-net-mvneta-Use-the-new-hwbm-framework.patch @@ -0,0 +1,359 @@ +From: Gregory CLEMENT <gregory.clement@free-electrons.com> +Date: Mon, 14 Mar 2016 09:39:05 +0100 +Subject: [PATCH] net: mvneta: Use the new hwbm framework + +Now that the hardware buffer management framework had been introduced, +let's use it. + +Tested-by: Sebastian Careba <nitroshift@yahoo.com> +Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + +--- a/drivers/net/ethernet/marvell/Kconfig ++++ b/drivers/net/ethernet/marvell/Kconfig +@@ -43,6 +43,7 @@ config MVMDIO + config MVNETA_BM + tristate "Marvell Armada 38x/XP network interface BM support" + depends on MVNETA ++ select HWBM + ---help--- + This driver supports auxiliary block of the network + interface units in the Marvell ARMADA XP and ARMADA 38x SoC +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -30,6 +30,7 @@ + #include <linux/phy.h> + #include <linux/platform_device.h> + #include <linux/skbuff.h> ++#include <net/hwbm.h> + #include "mvneta_bm.h" + #include <net/ip.h> + #include <net/ipv6.h> +@@ -1024,11 +1025,12 @@ static int mvneta_bm_port_init(struct pl + static void mvneta_bm_update_mtu(struct mvneta_port *pp, int mtu) + { + struct mvneta_bm_pool *bm_pool = pp->pool_long; ++ struct hwbm_pool *hwbm_pool = &bm_pool->hwbm_pool; + int num; + + /* Release all buffers from long pool */ + mvneta_bm_bufs_free(pp->bm_priv, bm_pool, 1 << pp->id); +- if (bm_pool->buf_num) { ++ if (hwbm_pool->buf_num) { + WARN(1, "cannot free all buffers in pool %d\n", + bm_pool->id); + goto bm_mtu_err; +@@ -1036,14 +1038,14 @@ static void mvneta_bm_update_mtu(struct + + bm_pool->pkt_size = MVNETA_RX_PKT_SIZE(mtu); + bm_pool->buf_size = MVNETA_RX_BUF_SIZE(bm_pool->pkt_size); +- bm_pool->frag_size = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + +- SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(bm_pool->pkt_size)); ++ hwbm_pool->frag_size = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + ++ SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(bm_pool->pkt_size)); + + /* Fill entire long pool */ +- num = mvneta_bm_bufs_add(pp->bm_priv, bm_pool, bm_pool->size); +- if (num != bm_pool->size) { ++ num = hwbm_pool_add(hwbm_pool, hwbm_pool->size, GFP_ATOMIC); ++ if (num != hwbm_pool->size) { + WARN(1, "pool %d: %d of %d allocated\n", +- bm_pool->id, num, bm_pool->size); ++ bm_pool->id, num, hwbm_pool->size); + goto bm_mtu_err; + } + mvneta_bm_pool_bufsize_set(pp, bm_pool->buf_size, bm_pool->id); +@@ -2064,14 +2066,14 @@ err_drop_frame: + } + + /* Refill processing */ +- err = mvneta_bm_pool_refill(pp->bm_priv, bm_pool); ++ err = hwbm_pool_refill(&bm_pool->hwbm_pool, GFP_ATOMIC); + if (err) { + netdev_err(dev, "Linux processing - Can't refill\n"); + rxq->missed++; + goto err_drop_frame_ret_pool; + } + +- frag_size = bm_pool->frag_size; ++ frag_size = bm_pool->hwbm_pool.frag_size; + + skb = build_skb(data, frag_size > PAGE_SIZE ? 0 : frag_size); + +--- a/drivers/net/ethernet/marvell/mvneta_bm.c ++++ b/drivers/net/ethernet/marvell/mvneta_bm.c +@@ -10,16 +10,17 @@ + * warranty of any kind, whether express or implied. + */ + +-#include <linux/kernel.h> ++#include <linux/clk.h> + #include <linux/genalloc.h> +-#include <linux/platform_device.h> +-#include <linux/netdevice.h> +-#include <linux/skbuff.h> ++#include <linux/io.h> ++#include <linux/kernel.h> + #include <linux/mbus.h> + #include <linux/module.h> +-#include <linux/io.h> ++#include <linux/netdevice.h> + #include <linux/of.h> +-#include <linux/clk.h> ++#include <linux/platform_device.h> ++#include <linux/skbuff.h> ++#include <net/hwbm.h> + #include "mvneta_bm.h" + + #define MVNETA_BM_DRIVER_NAME "mvneta_bm" +@@ -88,17 +89,13 @@ static void mvneta_bm_pool_target_set(st + mvneta_bm_write(priv, MVNETA_BM_XBAR_POOL_REG(pool_id), val); + } + +-/* Allocate skb for BM pool */ +-void *mvneta_buf_alloc(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- dma_addr_t *buf_phys_addr) ++int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf) + { +- void *buf; ++ struct mvneta_bm_pool *bm_pool = ++ (struct mvneta_bm_pool *)hwbm_pool->priv; ++ struct mvneta_bm *priv = bm_pool->priv; + dma_addr_t phys_addr; + +- buf = mvneta_frag_alloc(bm_pool->frag_size); +- if (!buf) +- return NULL; +- + /* In order to update buf_cookie field of RX descriptor properly, + * BM hardware expects buf virtual address to be placed in the + * first four bytes of mapped buffer. +@@ -106,75 +103,13 @@ void *mvneta_buf_alloc(struct mvneta_bm + *(u32 *)buf = (u32)buf; + phys_addr = dma_map_single(&priv->pdev->dev, buf, bm_pool->buf_size, + DMA_FROM_DEVICE); +- if (unlikely(dma_mapping_error(&priv->pdev->dev, phys_addr))) { +- mvneta_frag_free(bm_pool->frag_size, buf); +- return NULL; +- } +- *buf_phys_addr = phys_addr; +- +- return buf; +-} +- +-/* Refill processing for HW buffer management */ +-int mvneta_bm_pool_refill(struct mvneta_bm *priv, +- struct mvneta_bm_pool *bm_pool) +-{ +- dma_addr_t buf_phys_addr; +- void *buf; +- +- buf = mvneta_buf_alloc(priv, bm_pool, &buf_phys_addr); +- if (!buf) ++ if (unlikely(dma_mapping_error(&priv->pdev->dev, phys_addr))) + return -ENOMEM; + +- mvneta_bm_pool_put_bp(priv, bm_pool, buf_phys_addr); +- ++ mvneta_bm_pool_put_bp(priv, bm_pool, phys_addr); + return 0; + } +-EXPORT_SYMBOL_GPL(mvneta_bm_pool_refill); +- +-/* Allocate buffers for the pool */ +-int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- int buf_num) +-{ +- int err, i; +- +- if (bm_pool->buf_num == bm_pool->size) { +- dev_dbg(&priv->pdev->dev, "pool %d already filled\n", +- bm_pool->id); +- return bm_pool->buf_num; +- } +- +- if (buf_num < 0 || +- (buf_num + bm_pool->buf_num > bm_pool->size)) { +- dev_err(&priv->pdev->dev, +- "cannot allocate %d buffers for pool %d\n", +- buf_num, bm_pool->id); +- return 0; +- } +- +- for (i = 0; i < buf_num; i++) { +- err = mvneta_bm_pool_refill(priv, bm_pool); +- if (err < 0) +- break; +- } +- +- /* Update BM driver with number of buffers added to pool */ +- bm_pool->buf_num += i; +- +- dev_dbg(&priv->pdev->dev, +- "%s pool %d: pkt_size=%4d, buf_size=%4d, frag_size=%4d\n", +- bm_pool->type == MVNETA_BM_SHORT ? "short" : "long", +- bm_pool->id, bm_pool->pkt_size, bm_pool->buf_size, +- bm_pool->frag_size); +- +- dev_dbg(&priv->pdev->dev, +- "%s pool %d: %d of %d buffers added\n", +- bm_pool->type == MVNETA_BM_SHORT ? "short" : "long", +- bm_pool->id, i, buf_num); +- +- return i; +-} +-EXPORT_SYMBOL_GPL(mvneta_bm_bufs_add); ++EXPORT_SYMBOL_GPL(mvneta_bm_construct); + + /* Create pool */ + static int mvneta_bm_pool_create(struct mvneta_bm *priv, +@@ -183,8 +118,7 @@ static int mvneta_bm_pool_create(struct + struct platform_device *pdev = priv->pdev; + u8 target_id, attr; + int size_bytes, err; +- +- size_bytes = sizeof(u32) * bm_pool->size; ++ size_bytes = sizeof(u32) * bm_pool->hwbm_pool.size; + bm_pool->virt_addr = dma_alloc_coherent(&pdev->dev, size_bytes, + &bm_pool->phys_addr, + GFP_KERNEL); +@@ -245,11 +179,16 @@ struct mvneta_bm_pool *mvneta_bm_pool_us + + /* Allocate buffers in case BM pool hasn't been used yet */ + if (new_pool->type == MVNETA_BM_FREE) { ++ struct hwbm_pool *hwbm_pool = &new_pool->hwbm_pool; ++ ++ new_pool->priv = priv; + new_pool->type = type; + new_pool->buf_size = MVNETA_RX_BUF_SIZE(new_pool->pkt_size); +- new_pool->frag_size = ++ hwbm_pool->frag_size = + SKB_DATA_ALIGN(MVNETA_RX_BUF_SIZE(new_pool->pkt_size)) + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); ++ hwbm_pool->construct = mvneta_bm_construct; ++ hwbm_pool->priv = new_pool; + + /* Create new pool */ + err = mvneta_bm_pool_create(priv, new_pool); +@@ -260,10 +199,10 @@ struct mvneta_bm_pool *mvneta_bm_pool_us + } + + /* Allocate buffers for this pool */ +- num = mvneta_bm_bufs_add(priv, new_pool, new_pool->size); +- if (num != new_pool->size) { ++ num = hwbm_pool_add(hwbm_pool, hwbm_pool->size, GFP_ATOMIC); ++ if (num != hwbm_pool->size) { + WARN(1, "pool %d: %d of %d allocated\n", +- new_pool->id, num, new_pool->size); ++ new_pool->id, num, hwbm_pool->size); + return NULL; + } + } +@@ -284,7 +223,7 @@ void mvneta_bm_bufs_free(struct mvneta_b + + mvneta_bm_config_set(priv, MVNETA_BM_EMPTY_LIMIT_MASK); + +- for (i = 0; i < bm_pool->buf_num; i++) { ++ for (i = 0; i < bm_pool->hwbm_pool.buf_num; i++) { + dma_addr_t buf_phys_addr; + u32 *vaddr; + +@@ -303,13 +242,13 @@ void mvneta_bm_bufs_free(struct mvneta_b + + dma_unmap_single(&priv->pdev->dev, buf_phys_addr, + bm_pool->buf_size, DMA_FROM_DEVICE); +- mvneta_frag_free(bm_pool->frag_size, vaddr); ++ hwbm_buf_free(&bm_pool->hwbm_pool, vaddr); + } + + mvneta_bm_config_clear(priv, MVNETA_BM_EMPTY_LIMIT_MASK); + + /* Update BM driver with number of buffers removed from pool */ +- bm_pool->buf_num -= i; ++ bm_pool->hwbm_pool.buf_num -= i; + } + EXPORT_SYMBOL_GPL(mvneta_bm_bufs_free); + +@@ -317,6 +256,7 @@ EXPORT_SYMBOL_GPL(mvneta_bm_bufs_free); + void mvneta_bm_pool_destroy(struct mvneta_bm *priv, + struct mvneta_bm_pool *bm_pool, u8 port_map) + { ++ struct hwbm_pool *hwbm_pool = &bm_pool->hwbm_pool; + bm_pool->port_map &= ~port_map; + if (bm_pool->port_map) + return; +@@ -324,11 +264,12 @@ void mvneta_bm_pool_destroy(struct mvnet + bm_pool->type = MVNETA_BM_FREE; + + mvneta_bm_bufs_free(priv, bm_pool, port_map); +- if (bm_pool->buf_num) ++ if (hwbm_pool->buf_num) + WARN(1, "cannot free all buffers in pool %d\n", bm_pool->id); + + if (bm_pool->virt_addr) { +- dma_free_coherent(&priv->pdev->dev, sizeof(u32) * bm_pool->size, ++ dma_free_coherent(&priv->pdev->dev, ++ sizeof(u32) * hwbm_pool->size, + bm_pool->virt_addr, bm_pool->phys_addr); + bm_pool->virt_addr = NULL; + } +@@ -381,10 +322,10 @@ static void mvneta_bm_pools_init(struct + MVNETA_BM_POOL_CAP_ALIGN)); + size = ALIGN(size, MVNETA_BM_POOL_CAP_ALIGN); + } +- bm_pool->size = size; ++ bm_pool->hwbm_pool.size = size; + + mvneta_bm_write(priv, MVNETA_BM_POOL_SIZE_REG(i), +- bm_pool->size); ++ bm_pool->hwbm_pool.size); + + /* Obtain custom pkt_size from DT */ + sprintf(prop, "pool%d,pkt-size", i); +--- a/drivers/net/ethernet/marvell/mvneta_bm.h ++++ b/drivers/net/ethernet/marvell/mvneta_bm.h +@@ -108,20 +108,15 @@ struct mvneta_bm { + }; + + struct mvneta_bm_pool { ++ struct hwbm_pool hwbm_pool; + /* Pool number in the range 0-3 */ + u8 id; + enum mvneta_bm_type type; + +- /* Buffer Pointers Pool External (BPPE) size in number of bytes */ +- int size; +- /* Number of buffers used by this pool */ +- int buf_num; +- /* Pool buffer size */ +- int buf_size; + /* Packet size */ + int pkt_size; +- /* Single frag size */ +- u32 frag_size; ++ /* Size of the buffer acces through DMA*/ ++ u32 buf_size; + + /* BPPE virtual base address */ + u32 *virt_addr; +@@ -143,8 +138,7 @@ void mvneta_bm_pool_destroy(struct mvnet + struct mvneta_bm_pool *bm_pool, u8 port_map); + void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, + u8 port_map); +-int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- int buf_num); ++int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf); + int mvneta_bm_pool_refill(struct mvneta_bm *priv, + struct mvneta_bm_pool *bm_pool); + struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, +@@ -170,8 +164,7 @@ void mvneta_bm_pool_destroy(struct mvnet + struct mvneta_bm_pool *bm_pool, u8 port_map) {} + void mvneta_bm_bufs_free(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, + u8 port_map) {} +-int mvneta_bm_bufs_add(struct mvneta_bm *priv, struct mvneta_bm_pool *bm_pool, +- int buf_num) { return 0; } ++int mvneta_bm_construct(struct hwbm_pool *hwbm_pool, void *buf) { return 0; } + int mvneta_bm_pool_refill(struct mvneta_bm *priv, + struct mvneta_bm_pool *bm_pool) {return 0; } + struct mvneta_bm_pool *mvneta_bm_pool_use(struct mvneta_bm *priv, u8 pool_id, |