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path: root/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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Diffstat (limited to 'drivers/net/ethernet/mediatek/mtk_eth_soc.c')
-rw-r--r--drivers/net/ethernet/mediatek/mtk_eth_soc.c88
1 files changed, 69 insertions, 19 deletions
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 2482f4731308..ec6a251a0f02 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1135,10 +1135,13 @@ static int mtk_init_fq_dma(struct mtk_eth *eth)
dma_addr_t dma_addr;
int i;
- eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
- cnt * soc->txrx.txd_size,
- &eth->phy_scratch_ring,
- GFP_KERNEL);
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM))
+ eth->scratch_ring = eth->sram_base;
+ else
+ eth->scratch_ring = dma_alloc_coherent(eth->dma_dev,
+ cnt * soc->txrx.txd_size,
+ &eth->phy_scratch_ring,
+ GFP_KERNEL);
if (unlikely(!eth->scratch_ring))
return -ENOMEM;
@@ -2446,8 +2449,14 @@ static int mtk_tx_alloc(struct mtk_eth *eth)
if (!ring->buf)
goto no_tx_mem;
- ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz,
- &ring->phys, GFP_KERNEL);
+ if (MTK_HAS_CAPS(soc->caps, MTK_SRAM)) {
+ ring->dma = eth->sram_base + ring_size * sz;
+ ring->phys = eth->phy_scratch_ring + ring_size * (dma_addr_t)sz;
+ } else {
+ ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz,
+ &ring->phys, GFP_KERNEL);
+ }
+
if (!ring->dma)
goto no_tx_mem;
@@ -2546,8 +2555,7 @@ static void mtk_tx_clean(struct mtk_eth *eth)
kfree(ring->buf);
ring->buf = NULL;
}
-
- if (ring->dma) {
+ if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && ring->dma) {
dma_free_coherent(eth->dma_dev,
ring->dma_size * soc->txrx.txd_size,
ring->dma, ring->phys);
@@ -2566,9 +2574,14 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
{
const struct mtk_reg_map *reg_map = eth->soc->reg_map;
struct mtk_rx_ring *ring;
- int rx_data_len, rx_dma_size;
+ int rx_data_len, rx_dma_size, tx_ring_size;
int i;
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
+ tx_ring_size = MTK_QDMA_RING_SIZE;
+ else
+ tx_ring_size = MTK_DMA_SIZE;
+
if (rx_flag == MTK_RX_FLAGS_QDMA) {
if (ring_no)
return -EINVAL;
@@ -2603,9 +2616,20 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
ring->page_pool = pp;
}
- ring->dma = dma_alloc_coherent(eth->dma_dev,
- rx_dma_size * eth->soc->txrx.rxd_size,
- &ring->phys, GFP_KERNEL);
+ if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM) ||
+ rx_flag != MTK_RX_FLAGS_NORMAL) {
+ ring->dma = dma_alloc_coherent(eth->dma_dev,
+ rx_dma_size * eth->soc->txrx.rxd_size,
+ &ring->phys, GFP_KERNEL);
+ } else {
+ struct mtk_tx_ring *tx_ring = &eth->tx_ring;
+
+ ring->dma = tx_ring->dma + tx_ring_size *
+ eth->soc->txrx.txd_size * (ring_no + 1);
+ ring->phys = tx_ring->phys + tx_ring_size *
+ eth->soc->txrx.txd_size * (ring_no + 1);
+ }
+
if (!ring->dma)
return -ENOMEM;
@@ -2690,7 +2714,7 @@ static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
return 0;
}
-static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
+static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring, bool in_sram)
{
int i;
@@ -2713,7 +2737,7 @@ static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring)
ring->data = NULL;
}
- if (ring->dma) {
+ if (!in_sram && ring->dma) {
dma_free_coherent(eth->dma_dev,
ring->dma_size * eth->soc->txrx.rxd_size,
ring->dma, ring->phys);
@@ -3073,7 +3097,7 @@ static void mtk_dma_free(struct mtk_eth *eth)
for (i = 0; i < MTK_MAX_DEVS; i++)
if (eth->netdev[i])
netdev_reset_queue(eth->netdev[i]);
- if (eth->scratch_ring) {
+ if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && eth->scratch_ring) {
dma_free_coherent(eth->dma_dev,
MTK_QDMA_RING_SIZE * soc->txrx.txd_size,
eth->scratch_ring, eth->phy_scratch_ring);
@@ -3081,13 +3105,13 @@ static void mtk_dma_free(struct mtk_eth *eth)
eth->phy_scratch_ring = 0;
}
mtk_tx_clean(eth);
- mtk_rx_clean(eth, &eth->rx_ring[0]);
- mtk_rx_clean(eth, &eth->rx_ring_qdma);
+ mtk_rx_clean(eth, &eth->rx_ring[0], MTK_HAS_CAPS(soc->caps, MTK_SRAM));
+ mtk_rx_clean(eth, &eth->rx_ring_qdma, false);
if (eth->hwlro) {
mtk_hwlro_rx_uninit(eth);
for (i = 1; i < MTK_MAX_RX_RING_NUM; i++)
- mtk_rx_clean(eth, &eth->rx_ring[i]);
+ mtk_rx_clean(eth, &eth->rx_ring[i], false);
}
kfree(eth->scratch_head);
@@ -4676,7 +4700,7 @@ static int mtk_sgmii_init(struct mtk_eth *eth)
static int mtk_probe(struct platform_device *pdev)
{
- struct resource *res = NULL;
+ struct resource *res = NULL, *res_sram;
struct device_node *mac_np;
struct mtk_eth *eth;
int err, i;
@@ -4696,6 +4720,20 @@ static int mtk_probe(struct platform_device *pdev)
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
eth->ip_align = NET_IP_ALIGN;
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM)) {
+ /* SRAM is actual memory and supports transparent access just like DRAM.
+ * Hence we don't require __iomem being set and don't need to use accessor
+ * functions to read from or write to SRAM.
+ */
+ if (mtk_is_netsys_v3_or_greater(eth)) {
+ eth->sram_base = (void __force *)devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(eth->sram_base))
+ return PTR_ERR(eth->sram_base);
+ } else {
+ eth->sram_base = (void __force *)eth->base + MTK_ETH_SRAM_OFFSET;
+ }
+ }
+
spin_lock_init(&eth->page_lock);
spin_lock_init(&eth->tx_irq_lock);
spin_lock_init(&eth->rx_irq_lock);
@@ -4759,6 +4797,18 @@ static int mtk_probe(struct platform_device *pdev)
err = -EINVAL;
goto err_destroy_sgmii;
}
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SRAM)) {
+ if (mtk_is_netsys_v3_or_greater(eth)) {
+ res_sram = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!res_sram) {
+ err = -EINVAL;
+ goto err_destroy_sgmii;
+ }
+ eth->phy_scratch_ring = res_sram->start;
+ } else {
+ eth->phy_scratch_ring = res->start + MTK_ETH_SRAM_OFFSET;
+ }
+ }
}
if (eth->soc->offload_version) {
generated by cgit (git 2.34.1) at 2024-05-13 22:30:45 +0000