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d62ecd6c07
Refresh patches 6.12 for airoha and econet Fixes:122135b964("airoha: an7581: add support for kernel 6.12") Fixes:73d0f92460("kernel: Add new platform EcoNet MIPS") Signed-off-by: Leo Barsky <leobrsky@proton.me> Link: https://github.com/openwrt/openwrt/pull/20073 Signed-off-by: Robert Marko <robimarko@gmail.com>
80 lines
2.6 KiB
Diff
80 lines
2.6 KiB
Diff
From 3a1ce9e3d01bbf3912c3e3f81cb554d558eb715b Mon Sep 17 00:00:00 2001
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Wed, 21 May 2025 09:16:38 +0200
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Subject: [PATCH 2/3] net: airoha: Add the capability to allocate hwfd buffers
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via reserved-memory
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In some configurations QDMA blocks require a contiguous block of
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system memory for hwfd buffers queue. Introduce the capability to allocate
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hw buffers forwarding queue via the reserved-memory DTS property instead of
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running dmam_alloc_coherent().
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Reviewed-by: Simon Horman <horms@kernel.org>
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Link: https://patch.msgid.link/20250521-airopha-desc-sram-v3-3-a6e9b085b4f0@kernel.org
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Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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---
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drivers/net/ethernet/airoha/airoha_eth.c | 33 +++++++++++++++++++++---
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1 file changed, 30 insertions(+), 3 deletions(-)
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--- a/drivers/net/ethernet/airoha/airoha_eth.c
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+++ b/drivers/net/ethernet/airoha/airoha_eth.c
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@@ -5,6 +5,7 @@
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*/
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#include <linux/of.h>
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#include <linux/of_net.h>
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+#include <linux/of_reserved_mem.h>
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#include <linux/platform_device.h>
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#include <linux/tcp.h>
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#include <linux/u64_stats_sync.h>
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@@ -1072,9 +1073,11 @@ static void airoha_qdma_cleanup_tx_queue
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static int airoha_qdma_init_hfwd_queues(struct airoha_qdma *qdma)
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{
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struct airoha_eth *eth = qdma->eth;
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+ int id = qdma - ð->qdma[0];
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dma_addr_t dma_addr;
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+ const char *name;
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+ int size, index;
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u32 status;
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- int size;
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size = HW_DSCP_NUM * sizeof(struct airoha_qdma_fwd_desc);
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if (!dmam_alloc_coherent(eth->dev, size, &dma_addr, GFP_KERNEL))
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@@ -1082,10 +1085,34 @@ static int airoha_qdma_init_hfwd_queues(
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airoha_qdma_wr(qdma, REG_FWD_DSCP_BASE, dma_addr);
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- size = AIROHA_MAX_PACKET_SIZE * HW_DSCP_NUM;
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- if (!dmam_alloc_coherent(eth->dev, size, &dma_addr, GFP_KERNEL))
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+ name = devm_kasprintf(eth->dev, GFP_KERNEL, "qdma%d-buf", id);
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+ if (!name)
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return -ENOMEM;
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+ index = of_property_match_string(eth->dev->of_node,
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+ "memory-region-names", name);
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+ if (index >= 0) {
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+ struct reserved_mem *rmem;
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+ struct device_node *np;
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+
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+ /* Consume reserved memory for hw forwarding buffers queue if
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+ * available in the DTS
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+ */
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+ np = of_parse_phandle(eth->dev->of_node, "memory-region",
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+ index);
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+ if (!np)
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+ return -ENODEV;
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+
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+ rmem = of_reserved_mem_lookup(np);
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+ of_node_put(np);
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+ dma_addr = rmem->base;
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+ } else {
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+ size = AIROHA_MAX_PACKET_SIZE * HW_DSCP_NUM;
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+ if (!dmam_alloc_coherent(eth->dev, size, &dma_addr,
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+ GFP_KERNEL))
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+ return -ENOMEM;
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+ }
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+
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airoha_qdma_wr(qdma, REG_FWD_BUF_BASE, dma_addr);
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airoha_qdma_rmw(qdma, REG_HW_FWD_DSCP_CFG,
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