diff options
Diffstat (limited to 'target/linux/ramips/patches-5.4/0107-staging-mt7621-pci-fix-io-space-and-properly-set-res.patch')
| -rw-r--r-- | target/linux/ramips/patches-5.4/0107-staging-mt7621-pci-fix-io-space-and-properly-set-res.patch | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/target/linux/ramips/patches-5.4/0107-staging-mt7621-pci-fix-io-space-and-properly-set-res.patch b/target/linux/ramips/patches-5.4/0107-staging-mt7621-pci-fix-io-space-and-properly-set-res.patch deleted file mode 100644 index 393fd4d5dd..0000000000 --- a/target/linux/ramips/patches-5.4/0107-staging-mt7621-pci-fix-io-space-and-properly-set-res.patch +++ /dev/null @@ -1,131 +0,0 @@ -From 3faf4e1c537de86058fc22a851cd979489b9185e Mon Sep 17 00:00:00 2001 -From: Sergio Paracuellos <sergio.paracuellos@gmail.com> -Date: Wed, 18 Mar 2020 10:44:45 +0100 -Subject: [PATCH] staging: mt7621-pci: fix io space and properly set resource - limits - -Function 'mt7621_pci_parse_request_of_pci_ranges' is using -'of_pci_range_to_resource' to get both mem and io resources. -Internally this function calls to 'pci_address_to_pio' which -returns -1 if io space address is an address > IO_SPACE_LIMIT -which is 0xFFFF for mips. This mt7621 soc has io space in physical -address 0x1e160000. In order to fix this, overwrite invalid io -0xffffffff with properly values from the device tree and set -mapped address of this resource as io port base memory address -calling 'set_io_port_base' function. There is also need to properly -setup resource limits and io and memory windows with properly -parsed values instead of set them as 'no limit' which it is wrong. -For any reason I don't really know legacy driver sets up mem window -as 0xFFFFFFFF and any other value seems to does not work as expected, -so set up also here with same values. - -Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> -Link: https://lore.kernel.org/r/20200318094445.19669-1-sergio.paracuellos@gmail.com -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/staging/mt7621-pci/pci-mt7621.c | 43 +++++++++++++++++++-------------- - 1 file changed, 25 insertions(+), 18 deletions(-) - ---- a/drivers/staging/mt7621-pci/pci-mt7621.c -+++ b/drivers/staging/mt7621-pci/pci-mt7621.c -@@ -118,6 +118,7 @@ struct mt7621_pcie_port { - * @busn: bus range - * @offset: IO / Memory offset - * @dev: Pointer to PCIe device -+ * @io_map_base: virtual memory base address for io - * @ports: pointer to PCIe port information - * @resets_inverted: depends on chip revision - * reset lines are inverted. -@@ -132,6 +133,7 @@ struct mt7621_pcie { - resource_size_t mem; - resource_size_t io; - } offset; -+ unsigned long io_map_base; - struct list_head ports; - bool resets_inverted; - }; -@@ -291,22 +293,21 @@ static int mt7621_pci_parse_request_of_p - } - - for_each_of_pci_range(&parser, &range) { -- struct resource *res = NULL; -- - switch (range.flags & IORESOURCE_TYPE_BITS) { - case IORESOURCE_IO: -- ioremap(range.cpu_addr, range.size); -- res = &pcie->io; -+ pcie->io_map_base = -+ (unsigned long)ioremap(range.cpu_addr, -+ range.size); -+ of_pci_range_to_resource(&range, node, &pcie->io); -+ pcie->io.start = range.cpu_addr; -+ pcie->io.end = range.cpu_addr + range.size - 1; - pcie->offset.io = 0x00000000UL; - break; - case IORESOURCE_MEM: -- res = &pcie->mem; -+ of_pci_range_to_resource(&range, node, &pcie->mem); - pcie->offset.mem = 0x00000000UL; - break; - } -- -- if (res) -- of_pci_range_to_resource(&range, node, res); - } - - err = of_pci_parse_bus_range(node, &pcie->busn); -@@ -318,6 +319,8 @@ static int mt7621_pci_parse_request_of_p - pcie->busn.flags = IORESOURCE_BUS; - } - -+ set_io_port_base(pcie->io_map_base); -+ - return 0; - } - -@@ -548,6 +551,10 @@ static void mt7621_pcie_enable_ports(str - u32 slot; - u32 val; - -+ /* Setup MEMWIN and IOWIN */ -+ pcie_write(pcie, 0xffffffff, RALINK_PCI_MEMBASE); -+ pcie_write(pcie, pcie->io.start, RALINK_PCI_IOBASE); -+ - list_for_each_entry(port, &pcie->ports, list) { - if (port->enabled) { - mt7621_pcie_port_clk_enable(port); -@@ -668,11 +675,17 @@ static int mt7621_pci_probe(struct platf - return err; - } - -+ err = mt7621_pci_parse_request_of_pci_ranges(pcie); -+ if (err) { -+ dev_err(dev, "Error requesting pci resources from ranges"); -+ goto out_release_gpios; -+ } -+ - /* set resources limits */ -- iomem_resource.start = 0; -- iomem_resource.end = ~0UL; /* no limit */ -- ioport_resource.start = 0; -- ioport_resource.end = ~0UL; /* no limit */ -+ iomem_resource.start = pcie->mem.start; -+ iomem_resource.end = pcie->mem.end; -+ ioport_resource.start = pcie->io.start; -+ ioport_resource.end = pcie->io.end; - - mt7621_pcie_init_ports(pcie); - -@@ -685,12 +698,6 @@ static int mt7621_pci_probe(struct platf - - mt7621_pcie_enable_ports(pcie); - -- err = mt7621_pci_parse_request_of_pci_ranges(pcie); -- if (err) { -- dev_err(dev, "Error requesting pci resources from ranges"); -- goto out_release_gpios; -- } -- - setup_cm_memory_region(pcie); - - err = mt7621_pcie_request_resources(pcie, &res); |