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e2e2fc3cd0
Add updated patches for 6.6. DMA/cache-handling patches have been reworked / backported from upstream. Signed-off-by: Zoltan HERPAI <wigyori@uid0.hu>
107 lines
3.4 KiB
Diff
107 lines
3.4 KiB
Diff
From a170cb9936bb0b00d58aaea40984dbce1169fe42 Mon Sep 17 00:00:00 2001
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From: Minda Chen <minda.chen@starfivetech.com>
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Date: Mon, 3 Jul 2023 16:14:20 +0800
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Subject: [PATCH 110/116] usb: xhci: using dma_alloc_noncoherent to alloc low
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memory pool
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For RISCV_NONCACHEHERENT is set, using dma_alloc_noncoherent
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to alloc cached large block low memory buffer. And set default
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size to 4M. (largest size of continuous memory can be supported)
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Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
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---
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drivers/usb/host/xhci-mem.c | 29 ++++++++++++++++-------------
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drivers/usb/host/xhci-plat.c | 9 +++++----
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2 files changed, 21 insertions(+), 17 deletions(-)
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--- a/drivers/usb/host/xhci-mem.c
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+++ b/drivers/usb/host/xhci-mem.c
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@@ -1891,7 +1891,8 @@ void xhci_mem_cleanup(struct xhci_hcd *x
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if (xhci->lowmem_pool.pool) {
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pool = &xhci->lowmem_pool;
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- dma_free_coherent(dev, pool->size, (void *)pool->cached_base, pool->dma_addr);
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+ dma_free_noncoherent(dev, pool->size, (void *)pool->cached_base,
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+ pool->dma_addr, DMA_BIDIRECTIONAL);
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gen_pool_destroy(pool->pool);
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pool->pool = NULL;
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}
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@@ -2317,15 +2318,15 @@ int xhci_setup_local_lowmem(struct xhci_
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if (!pool->pool) {
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/* minimal alloc one page */
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pool->pool = gen_pool_create(PAGE_SHIFT, dev_to_node(hcd->self.sysdev));
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- if (IS_ERR(pool->pool))
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- return PTR_ERR(pool->pool);
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+ if (!pool->pool)
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+ return -ENOMEM;
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}
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- buffer = dma_alloc_coherent(hcd->self.sysdev, size, &dma_addr,
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- GFP_KERNEL | GFP_DMA32);
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+ buffer = dma_alloc_noncoherent(hcd->self.sysdev, size, &dma_addr,
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+ DMA_BIDIRECTIONAL, GFP_ATOMIC);
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- if (IS_ERR(buffer)) {
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- err = PTR_ERR(buffer);
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+ if (!buffer) {
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+ err = -ENOMEM;
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goto destroy_pool;
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}
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@@ -2335,11 +2336,11 @@ int xhci_setup_local_lowmem(struct xhci_
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* for it.
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*/
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err = gen_pool_add_virt(pool->pool, (unsigned long)buffer,
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- dma_addr, size, dev_to_node(hcd->self.sysdev));
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+ dma_addr, size, dev_to_node(hcd->self.sysdev));
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if (err < 0) {
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dev_err(hcd->self.sysdev, "gen_pool_add_virt failed with %d\n",
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err);
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- dma_free_coherent(hcd->self.sysdev, size, buffer, dma_addr);
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+ dma_free_noncoherent(hcd->self.sysdev, size, buffer, dma_addr, DMA_BIDIRECTIONAL);
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goto destroy_pool;
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}
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@@ -2362,7 +2363,7 @@ int xhci_mem_init(struct xhci_hcd *xhci,
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unsigned int val, val2;
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u64 val_64;
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u32 page_size, temp;
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- int i;
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+ int i, ret;
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INIT_LIST_HEAD(&xhci->cmd_list);
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@@ -2492,9 +2493,11 @@ int xhci_mem_init(struct xhci_hcd *xhci,
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xhci->isoc_bei_interval = AVOID_BEI_INTERVAL_MAX;
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if (xhci->quirks & XHCI_LOCAL_BUFFER) {
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- if (xhci_setup_local_lowmem(xhci,
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- xhci->lowmem_pool.size))
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- goto fail;
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+ ret = xhci_setup_local_lowmem(xhci, xhci->lowmem_pool.size);
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+ if (ret) {
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+ xhci->quirks &= ~XHCI_LOCAL_BUFFER;
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+ xhci_warn(xhci, "WARN: Can't alloc lowmem pool\n");
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+ }
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}
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/*
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--- a/drivers/usb/host/xhci-plat.c
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+++ b/drivers/usb/host/xhci-plat.c
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@@ -255,10 +255,11 @@ int xhci_plat_probe(struct platform_devi
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if (device_property_read_bool(tmpdev, "xhci-lowmem-pool")) {
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xhci->quirks |= XHCI_LOCAL_BUFFER;
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- if (device_property_read_u32(tmpdev, "lowmem-pool-size",
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- &xhci->lowmem_pool.size)) {
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- xhci->lowmem_pool.size = 8 << 20;
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- } else
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+ ret = device_property_read_u32(tmpdev, "lowmem-pool-size",
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+ &xhci->lowmem_pool.size);
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+ if (ret || xhci->lowmem_pool.size >= 4)
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+ xhci->lowmem_pool.size = 4 << 20;
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+ else
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xhci->lowmem_pool.size <<= 20;
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}
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device_property_read_u32(tmpdev, "imod-interval-ns",
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