diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0421-pcie-brcmstb-Bounce-buffer-support-is-for-BCM2711B0.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0421-pcie-brcmstb-Bounce-buffer-support-is-for-BCM2711B0.patch | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0421-pcie-brcmstb-Bounce-buffer-support-is-for-BCM2711B0.patch b/target/linux/bcm27xx/patches-5.4/950-0421-pcie-brcmstb-Bounce-buffer-support-is-for-BCM2711B0.patch deleted file mode 100644 index 73da382074..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0421-pcie-brcmstb-Bounce-buffer-support-is-for-BCM2711B0.patch +++ /dev/null @@ -1,88 +0,0 @@ -From 58ac2d4474e531300f9f83773aa4d09e95ee2626 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Fri, 12 Jul 2019 11:41:25 +0100 -Subject: [PATCH] pcie-brcmstb: Bounce buffer support is for BCM2711B0 - -Add a new compatible string to identify BCM2711B0, as later revisions -don't require the bounce buffer support. - -Signed-off-by: Phil Elwell <phil@raspberrypi.org> ---- - drivers/pci/controller/pcie-brcmstb.c | 31 +++++++++++++++++++++++---- - 1 file changed, 27 insertions(+), 4 deletions(-) - ---- a/drivers/pci/controller/pcie-brcmstb.c -+++ b/drivers/pci/controller/pcie-brcmstb.c -@@ -206,6 +206,8 @@ enum pcie_type { - BCM7435, - GENERIC, - BCM7278, -+ BCM2711B0, -+ BCM2711, - }; - - struct brcm_window { -@@ -302,6 +304,20 @@ static const int pcie_offsets[] = { - [EXT_CFG_DATA] = 0x8000, - }; - -+static const struct pcie_cfg_data bcm2711b0_cfg = { -+ .reg_field_info = pcie_reg_field_info, -+ .offsets = pcie_offsets, -+ .max_burst_size = BURST_SIZE_128, -+ .type = BCM2711B0, -+}; -+ -+static const struct pcie_cfg_data bcm2711_cfg = { -+ .reg_field_info = pcie_reg_field_info, -+ .offsets = pcie_offsets, -+ .max_burst_size = BURST_SIZE_128, -+ .type = BCM2711, -+}; -+ - static const struct pcie_cfg_data bcm7435_cfg = { - .reg_field_info = pcie_reg_field_info, - .offsets = pcie_offsets, -@@ -312,7 +328,7 @@ static const struct pcie_cfg_data bcm743 - static const struct pcie_cfg_data generic_cfg = { - .reg_field_info = pcie_reg_field_info, - .offsets = pcie_offsets, -- .max_burst_size = BURST_SIZE_128, // before BURST_SIZE_512 -+ .max_burst_size = BURST_SIZE_512, - .type = GENERIC, - }; - -@@ -380,7 +396,7 @@ static unsigned int bounce_buffer = 32*1 - module_param(bounce_buffer, uint, 0644); - MODULE_PARM_DESC(bounce_buffer, "Size of bounce buffer"); - --static unsigned int bounce_threshold = 0xc0000000; -+static unsigned int bounce_threshold; - module_param(bounce_threshold, uint, 0644); - MODULE_PARM_DESC(bounce_threshold, "Bounce threshold"); - -@@ -1675,6 +1691,8 @@ static int brcm_pcie_remove(struct platf - } - - static const struct of_device_id brcm_pcie_match[] = { -+ { .compatible = "brcm,bcm2711b0-pcie", .data = &bcm2711b0_cfg }, -+ { .compatible = "brcm,bcm2711-pcie", .data = &bcm2711_cfg }, - { .compatible = "brcm,bcm7425-pcie", .data = &bcm7425_cfg }, - { .compatible = "brcm,bcm7435-pcie", .data = &bcm7435_cfg }, - { .compatible = "brcm,bcm7278-pcie", .data = &bcm7278_cfg }, -@@ -1731,8 +1749,13 @@ static int brcm_pcie_probe(struct platfo - if (IS_ERR(base)) - return PTR_ERR(base); - -- /* To Do: Add hardware check if this ever gets fixed */ -- if (max_pfn > (bounce_threshold/PAGE_SIZE)) { -+ if (!bounce_threshold) { -+ /* PCIe on BCM2711B0 can only address 3GB */ -+ if (pcie->type == BCM2711B0 || pcie->type == GENERIC) -+ bounce_threshold = 0xc0000000; -+ } -+ -+ if (bounce_threshold && (max_pfn > (bounce_threshold/PAGE_SIZE))) { - int ret; - ret = brcm_pcie_bounce_init(dev, bounce_buffer, - (dma_addr_t)bounce_threshold); |