atheros: v3.18: add context container for PCI driver

Add container and place all context specific variables and structure to
it.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44719 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 70 insertions, 53 deletions

diff --git a/target/linux/atheros/patches-3.18/105-ar2315_pci.patch b/target/linux/atheros/patches-3.18/105-ar2315_pci.patch
index c3456ed2a2..02074ddf76 100644
--- a/target/linux/atheros/patches-3.18/105-ar2315_pci.patch
+++ b/target/linux/atheros/patches-3.18/105-ar2315_pci.patch
@@ -10,7 +10,7 @@
  obj-$(CONFIG_MIPS_PCI_VIRTIO)	+= pci-virtio-guest.o
 --- /dev/null
 +++ b/arch/mips/pci/pci-ar2315.c
-@@ -0,0 +1,428 @@
+@@ -0,0 +1,445 @@
 +/*
 + * This program is free software; you can redistribute it and/or
 + * modify it under the terms of the GNU General Public License
@@ -172,10 +172,22 @@
 +/* ??? access BAR */
 +#define AR2315_PCI_HOST_MBAR2		0x30000000
 +
-+static void __iomem *ar2315_pci_cfg_mem;
++struct ar2315_pci_ctrl {
++	void __iomem *cfg_mem;
++	struct pci_controller pci_ctrl;
++	struct resource mem_res;
++	struct resource io_res;
++};
++
++static inline struct ar2315_pci_ctrl *ar2315_pci_bus_to_apc(struct pci_bus *bus)
++{
++	struct pci_controller *hose = bus->sysdata;
++
++	return container_of(hose, struct ar2315_pci_ctrl, pci_ctrl);
++}
 +
-+static int ar2315_pci_cfg_access(int devfn, int where, int size, u32 *ptr,
-+				 bool write)
++static int ar2315_pci_cfg_access(struct ar2315_pci_ctrl *apc, unsigned devfn,
++				 int where, int size, u32 *ptr, bool write)
 +{
 +	int func = PCI_FUNC(devfn);
 +	int dev = PCI_SLOT(devfn);
@@ -195,7 +207,7 @@
 +
 +	mb();	/* PCI must see space change before we begin */
 +
-+	value = __raw_readl(ar2315_pci_cfg_mem + addr);
++	value = __raw_readl(apc->cfg_mem + addr);
 +
 +	isr = ar231x_read_reg(AR2315_PCI_ISR);
 +	if (isr & AR2315_PCI_INT_ABORT)
@@ -203,7 +215,7 @@
 +
 +	if (write) {
 +		value = (value & ~(mask << sh)) | *ptr << sh;
-+		__raw_writel(value, ar2315_pci_cfg_mem + addr);
++		__raw_writel(value, apc->cfg_mem + addr);
 +		isr = ar231x_read_reg(AR2315_PCI_ISR);
 +		if (isr & AR2315_PCI_INT_ABORT)
 +			goto exit_err;
@@ -226,32 +238,40 @@
 +					    PCIBIOS_SUCCESSFUL;
 +}
 +
-+static inline int ar2315_pci_local_cfg_rd(unsigned devfn, int where, u32 *val)
++static inline int ar2315_pci_local_cfg_rd(struct ar2315_pci_ctrl *apc,
++					  unsigned devfn, int where, u32 *val)
 +{
-+	return ar2315_pci_cfg_access(devfn, where, sizeof(u32), val, false);
++	return ar2315_pci_cfg_access(apc, devfn, where, sizeof(u32), val,
++				     false);
 +}
 +
-+static inline int ar2315_pci_local_cfg_wr(unsigned devfn, int where, u32 val)
++static inline int ar2315_pci_local_cfg_wr(struct ar2315_pci_ctrl *apc,
++					  unsigned devfn, int where, u32 val)
 +{
-+	return ar2315_pci_cfg_access(devfn, where, sizeof(u32), &val, true);
++	return ar2315_pci_cfg_access(apc, devfn, where, sizeof(u32), &val,
++				     true);
 +}
 +
-+static int ar2315_pci_cfg_read(struct pci_bus *bus, unsigned int devfn,
-+			       int where, int size, u32 *value)
++static int ar2315_pci_cfg_read(struct pci_bus *bus, unsigned devfn, int where,
++			       int size, u32 *value)
 +{
++	struct ar2315_pci_ctrl *apc = ar2315_pci_bus_to_apc(bus);
++
 +	if (PCI_SLOT(devfn) == AR2315_PCI_HOST_SLOT)
 +		return PCIBIOS_DEVICE_NOT_FOUND;
 +
-+	return ar2315_pci_cfg_access(devfn, where, size, value, 0);
++	return ar2315_pci_cfg_access(apc, devfn, where, size, value, false);
 +}
 +
-+static int ar2315_pci_cfg_write(struct pci_bus *bus, unsigned int devfn,
-+				int where, int size, u32 value)
++static int ar2315_pci_cfg_write(struct pci_bus *bus, unsigned devfn, int where,
++				int size, u32 value)
 +{
++	struct ar2315_pci_ctrl *apc = ar2315_pci_bus_to_apc(bus);
++
 +	if (PCI_SLOT(devfn) == AR2315_PCI_HOST_SLOT)
 +		return PCIBIOS_DEVICE_NOT_FOUND;
 +
-+	return ar2315_pci_cfg_access(devfn, where, size, &value, 1);
++	return ar2315_pci_cfg_access(apc, devfn, where, size, &value, true);
 +}
 +
 +static struct pci_ops ar2315_pci_ops = {
@@ -259,49 +279,26 @@
 +	.write	= ar2315_pci_cfg_write,
 +};
 +
-+static struct resource ar2315_mem_resource = {
-+	.name	= "ar2315-pci-mem",
-+	.start	= AR2315_PCIEXT,
-+	.end	= AR2315_PCIEXT + AR2315_PCIEXT_SZ - 1,
-+	.flags	= IORESOURCE_MEM,
-+};
-+
-+/* PCI controller does not support I/O ports */
-+static struct resource ar2315_io_resource = {
-+	.name	= "ar2315-pci-io",
-+	.start	= 0,
-+	.end	= 0,
-+	.flags	= IORESOURCE_IO,
-+};
-+
-+static struct pci_controller ar2315_pci_controller = {
-+	.pci_ops	= &ar2315_pci_ops,
-+	.mem_resource	= &ar2315_mem_resource,
-+	.io_resource	= &ar2315_io_resource,
-+	.mem_offset     = 0x00000000UL,
-+	.io_offset      = 0x00000000UL,
-+};
-+
-+static int ar2315_pci_host_setup(void)
++static int ar2315_pci_host_setup(struct ar2315_pci_ctrl *apc)
 +{
 +	unsigned devfn = PCI_DEVFN(AR2315_PCI_HOST_SLOT, 0);
 +	int res;
 +	u32 id;
 +
-+	res = ar2315_pci_local_cfg_rd(devfn, PCI_VENDOR_ID, &id);
++	res = ar2315_pci_local_cfg_rd(apc, devfn, PCI_VENDOR_ID, &id);
 +	if (res != PCIBIOS_SUCCESSFUL || id != AR2315_PCI_HOST_DEVID)
 +		return -ENODEV;
 +
 +	/* Program MBARs */
-+	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_0,
++	ar2315_pci_local_cfg_wr(apc, devfn, PCI_BASE_ADDRESS_0,
 +				AR2315_PCI_HOST_MBAR0);
-+	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_1,
++	ar2315_pci_local_cfg_wr(apc, devfn, PCI_BASE_ADDRESS_1,
 +				AR2315_PCI_HOST_MBAR1);
-+	ar2315_pci_local_cfg_wr(devfn, PCI_BASE_ADDRESS_2,
++	ar2315_pci_local_cfg_wr(apc, devfn, PCI_BASE_ADDRESS_2,
 +				AR2315_PCI_HOST_MBAR2);
 +
 +	/* Run */
-+	ar2315_pci_local_cfg_wr(devfn, PCI_COMMAND, PCI_COMMAND_MEMORY |
++	ar2315_pci_local_cfg_wr(apc, devfn, PCI_COMMAND, PCI_COMMAND_MEMORY |
 +				PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL |
 +				PCI_COMMAND_INVALIDATE | PCI_COMMAND_PARITY |
 +				PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK);
@@ -377,13 +374,23 @@
 +
 +static int ar2315_pci_probe(struct platform_device *pdev)
 +{
++	struct ar2315_pci_ctrl *apc;
 +	struct device *dev = &pdev->dev;
-+	int res;
++	int err;
++
++	apc = devm_kzalloc(dev, sizeof(*apc), GFP_KERNEL);
++	if (!apc)
++		return -ENOMEM;
++
++	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.flags = IORESOURCE_MEM;
 +
 +	/* Remap PCI config space */
-+	ar2315_pci_cfg_mem = devm_ioremap_nocache(dev, AR2315_PCIEXT,
-+						  AR2315_PCI_CFG_SIZE);
-+	if (!ar2315_pci_cfg_mem) {
++	apc->cfg_mem = devm_ioremap_nocache(dev, AR2315_PCIEXT,
++					    AR2315_PCI_CFG_SIZE);
++	if (!apc->cfg_mem) {
 +		dev_err(dev, "failed to remap PCI config space\n");
 +		return -ENOMEM;
 +	}
@@ -405,13 +412,23 @@
 +
 +	msleep(500);
 +
-+	res = ar2315_pci_host_setup();
-+	if (res)
-+		return res;
++	err = ar2315_pci_host_setup(apc);
++	if (err)
++		return err;
 +
 +	ar2315_pci_irq_init();
 +
-+	register_pci_controller(&ar2315_pci_controller);
++	/* PCI controller does not support I/O ports */
++	apc->io_res.name = "AR2315 IO space";
++	apc->io_res.start = 0;
++	apc->io_res.end = 0;
++	apc->io_res.flags = IORESOURCE_IO,
++
++	apc->pci_ctrl.pci_ops = &ar2315_pci_ops;
++	apc->pci_ctrl.mem_resource = &apc->mem_res,
++	apc->pci_ctrl.io_resource = &apc->io_res,
++
++	register_pci_controller(&apc->pci_ctrl);
 +
 +	return 0;
 +}