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Code Issues

atheros: v3.18: pass PCI IRQ and I/O mem via resources

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Pass PCI IRQ and I/O memory ranges via platform device resources, this
change makes PCI controller driver independed from arch headers, so
also remove few includes.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>

SVN-Revision: 44721
This commit is contained in:
Felix Fietkau 2015-03-13 03:00:51 +00:00
parent 6ba3363290
commit 99377012d4
1 changed files with 56 additions and 15 deletions
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71
target/linux/atheros/patches-3.18/105-ar2315_pci.patch
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@ -10,7 +10,7 @@
obj-$(CONFIG_MIPS_PCI_VIRTIO) += pci-virtio-guest.o
--- /dev/null
+++ b/arch/mips/pci/pci-ar2315.c
@@ -0,0 +1,482 @@
@@ -0,0 +1,494 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
@ -60,9 +60,6 @@
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <asm/paccess.h>
+#include <ath25_platform.h>
+#include <ar231x.h>
+#include <ar2315_regs.h>
+
+/*
+ * PCI Bus Interface Registers
@ -175,6 +172,7 @@
+struct ar2315_pci_ctrl {
+ void __iomem *cfg_mem;
+ void __iomem *mmr_mem;
+ unsigned irq;
+ struct pci_controller pci_ctrl;
+ struct resource mem_res;
+ struct resource io_res;
@ -393,8 +391,8 @@
+ irq_set_chip_data(irq, apc);
+ }
+
+ irq_set_chained_handler(AR2315_IRQ_LCBUS_PCI, ar2315_pci_irq_handler);
+ irq_set_handler_data(AR2315_IRQ_LCBUS_PCI, apc);
+ irq_set_chained_handler(apc->irq, ar2315_pci_irq_handler);
+ irq_set_handler_data(apc->irq, apc);
+
+ /* Clear any pending Abort or external Interrupts
+ * and enable interrupt processing */
@ -407,23 +405,37 @@
+{
+ struct ar2315_pci_ctrl *apc;
+ struct device *dev = &pdev->dev;
+ int err;
+ struct resource *res;
+ int irq, err;
+
+ apc = devm_kzalloc(dev, sizeof(*apc), GFP_KERNEL);
+ if (!apc)
+ return -ENOMEM;
+
+ apc->mmr_mem = devm_ioremap_nocache(dev, AR2315_PCI, AR2315_PCI_SIZE);
+ if (!apc->mmr_mem)
+ return -ENOMEM;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return -EINVAL;
+ apc->irq = irq;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "ar2315-pci-ctrl");
+ apc->mmr_mem = devm_ioremap_resource(dev, res);
+ if (IS_ERR(apc->mmr_mem))
+ return PTR_ERR(apc->mmr_mem);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "ar2315-pci-ext");
+ if (!res)
+ return -EINVAL;
+
+ apc->mem_res.name = "AR2315 PCI mem space";
+ apc->mem_res.start = AR2315_PCIEXT;
+ apc->mem_res.end = AR2315_PCIEXT + AR2315_PCIEXT_SZ - 1;
+ apc->mem_res.parent = res;
+ apc->mem_res.start = res->start;
+ apc->mem_res.end = res->end;
+ apc->mem_res.flags = IORESOURCE_MEM;
+
+ /* Remap PCI config space */
+ apc->cfg_mem = devm_ioremap_nocache(dev, AR2315_PCIEXT,
+ apc->cfg_mem = devm_ioremap_nocache(dev, res->start,
+ AR2315_PCI_CFG_SIZE);
+ if (!apc->cfg_mem) {
+ dev_err(dev, "failed to remap PCI config space\n");
@ -519,7 +531,34 @@
else if (pending & CAUSEF_IP2)
do_IRQ(AR2315_IRQ_MISC_INTRS);
else if (pending & CAUSEF_IP7)
@@ -427,4 +431,31 @@ void __init ar2315_arch_init(void)
@@ -423,8 +427,60 @@ void __init ar2315_plat_mem_setup(void)
_machine_restart = ar2315_restart;
}
+#ifdef CONFIG_PCI_AR2315
+static struct resource ar2315_pci_res[] = {
+ {
+ .name = "ar2315-pci-ctrl",
+ .flags = IORESOURCE_MEM,
+ .start = AR2315_PCI,
+ .end = AR2315_PCI + AR2315_PCI_SIZE - 1,
+ },
+ {
+ .name = "ar2315-pci-ext",
+ .flags = IORESOURCE_MEM,
+ .start = AR2315_PCIEXT,
+ .end = AR2315_PCIEXT + AR2315_PCIEXT_SZ - 1,
+ },
+ {
+ .name = "ar2315-pci",
+ .flags = IORESOURCE_IRQ,
+ .start = AR2315_IRQ_LCBUS_PCI,
+ .end = AR2315_IRQ_LCBUS_PCI,
+ },
+};
+#endif
+
void __init ar2315_arch_init(void)
{
ath25_serial_setup(AR2315_UART0, AR2315_MISC_IRQ_UART0,
ar2315_apb_frequency());
@ -547,7 +586,9 @@
+ (AR2315_IF_PCI_CLK_OUTPUT_CLK <<
+ AR2315_IF_PCI_CLK_SHIFT));
+
+ platform_device_register_simple("ar2315-pci", -1, NULL, 0);
+ platform_device_register_simple("ar2315-pci", -1,
+ ar2315_pci_res,
+ ARRAY_SIZE(ar2315_pci_res));
+ }
+#endif
}