diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.4/088-PCI-iproc-Allow-multiple-devices-except-on-PAXC.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.4/088-PCI-iproc-Allow-multiple-devices-except-on-PAXC.patch | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/target/linux/bcm53xx/patches-4.4/088-PCI-iproc-Allow-multiple-devices-except-on-PAXC.patch b/target/linux/bcm53xx/patches-4.4/088-PCI-iproc-Allow-multiple-devices-except-on-PAXC.patch deleted file mode 100644 index c33861e638..0000000000 --- a/target/linux/bcm53xx/patches-4.4/088-PCI-iproc-Allow-multiple-devices-except-on-PAXC.patch +++ /dev/null @@ -1,83 +0,0 @@ -From 46560388c476c8471fde7712c10f9fad8d0d1875 Mon Sep 17 00:00:00 2001 -From: Ray Jui <rjui@broadcom.com> -Date: Wed, 27 Jan 2016 16:52:24 -0600 -Subject: [PATCH] PCI: iproc: Allow multiple devices except on PAXC - -Commit 943ebae781f5 ("PCI: iproc: Add PAXC interface support") only allowed -device 0, which is a regression on BCMA-based platforms. - -All systems support only one device, a Root Port at 00:00.0, on the root -bus. PAXC-based systems support only the Root Port (00:00.0) and a single -device (with multiple functions) below it, e.g., 01:00.0, 01:00.1, etc. -Non-PAXC systems support arbitrary devices below the Root Port. - -[bhelgaas: changelog, fold in removal of MAX_NUM_PAXC_PF check] -Fixes: 943ebae781f5 ("PCI: iproc: Add PAXC interface support") -Reported-by: Rafal Milecki <zajec5@gmail.com> -Signed-off-by: Ray Jui <rjui@broadcom.com> -Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> ---- - drivers/pci/host/pcie-iproc.c | 29 +++++++++++------------------ - 1 file changed, 11 insertions(+), 18 deletions(-) - ---- a/drivers/pci/host/pcie-iproc.c -+++ b/drivers/pci/host/pcie-iproc.c -@@ -64,7 +64,6 @@ - #define OARR_SIZE_CFG BIT(OARR_SIZE_CFG_SHIFT) - - #define MAX_NUM_OB_WINDOWS 2 --#define MAX_NUM_PAXC_PF 4 - - #define IPROC_PCIE_REG_INVALID 0xffff - -@@ -170,20 +169,6 @@ static inline void iproc_pcie_ob_write(s - writel(val, pcie->base + offset + (window * 8)); - } - --static inline bool iproc_pcie_device_is_valid(struct iproc_pcie *pcie, -- unsigned int slot, -- unsigned int fn) --{ -- if (slot > 0) -- return false; -- -- /* PAXC can only support limited number of functions */ -- if (pcie->type == IPROC_PCIE_PAXC && fn >= MAX_NUM_PAXC_PF) -- return false; -- -- return true; --} -- - /** - * Note access to the configuration registers are protected at the higher layer - * by 'pci_lock' in drivers/pci/access.c -@@ -199,11 +184,11 @@ static void __iomem *iproc_pcie_map_cfg_ - u32 val; - u16 offset; - -- if (!iproc_pcie_device_is_valid(pcie, slot, fn)) -- return NULL; -- - /* root complex access */ - if (busno == 0) { -+ if (slot > 0 || fn > 0) -+ return NULL; -+ - iproc_pcie_write_reg(pcie, IPROC_PCIE_CFG_IND_ADDR, - where & CFG_IND_ADDR_MASK); - offset = iproc_pcie_reg_offset(pcie, IPROC_PCIE_CFG_IND_DATA); -@@ -213,6 +198,14 @@ static void __iomem *iproc_pcie_map_cfg_ - return (pcie->base + offset); - } - -+ /* -+ * PAXC is connected to an internally emulated EP within the SoC. It -+ * allows only one device. -+ */ -+ if (pcie->type == IPROC_PCIE_PAXC) -+ if (slot > 0) -+ return NULL; -+ - /* EP device access */ - val = (busno << CFG_ADDR_BUS_NUM_SHIFT) | - (slot << CFG_ADDR_DEV_NUM_SHIFT) | |