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path: root/target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch
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Diffstat (limited to 'target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch')
-rw-r--r--target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch228
1 files changed, 138 insertions, 90 deletions
diff --git a/target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch b/target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch
index d1dec60..9946c1a 100644
--- a/target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch
+++ b/target/linux/ramips/patches-3.14/0032-PCI-MIPS-adds-mt7620a-pcie-driver.patch
@@ -23,7 +23,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
obj-$(CONFIG_TANBAC_TB0219) += fixup-tb0219.o
--- /dev/null
+++ b/arch/mips/pci/pci-mt7620a.c
-@@ -0,0 +1,363 @@
+@@ -0,0 +1,401 @@
+/*
+ * Ralink MT7620A SoC PCI support
+ *
@@ -49,12 +49,12 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#include <linux/platform_device.h>
+
+#include <asm/mach-ralink/ralink_regs.h>
++#include <asm/mach-ralink/mt7620.h>
+
+#define RALINK_PCI_MM_MAP_BASE 0x20000000
+#define RALINK_PCI_IO_MAP_BASE 0x10160000
+
+#define RALINK_INT_PCIE0 4
-+#define RALINK_SYSTEM_CONTROL_BASE 0xb0000000
+#define RALINK_SYSCFG1 0x14
+#define RALINK_CLKCFG1 0x30
+#define RALINK_GPIOMODE 0x60
@@ -63,19 +63,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#define PCIEPHY0_CFG 0x90
+#define PPLL_CFG1 0x9c
+#define PPLL_DRV 0xa0
-+#define RALINK_PCI_HOST_MODE_EN (1<<7)
-+#define RALINK_PCIE_RC_MODE_EN (1<<8)
-+#define RALINK_PCIE_RST (1<<23)
-+#define RALINK_PCI_RST (1<<24)
-+#define RALINK_PCI_CLK_EN (1<<19)
-+#define RALINK_PCIE_CLK_EN (1<<21)
-+#define PCI_SLOTx2 (1<<11)
-+#define PCI_SLOTx1 (2<<11)
+#define PDRV_SW_SET (1<<31)
+#define LC_CKDRVPD_ (1<<19)
+
+#define RALINK_PCI_CONFIG_ADDR 0x20
-+#define RALINK_PCI_CONFIG_DATA_VIRTUAL_REG 0x24
++#define RALINK_PCI_CONFIG_DATA_VIRT_REG 0x24
+#define MEMORY_BASE 0x0
+#define RALINK_PCIE0_RST (1<<26)
+#define RALINK_PCI_BASE 0xB0140000
@@ -93,6 +85,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#define RALINK_PCI0_STATUS 0x50
+#define RALINK_PCI_PCIMSK_ADDR 0x0C
+
++#define RALINK_PCIEPHY_P0_CTL_OFFSET 0x7498
+#define RALINK_PCIE0_CLK_EN (1 << 26)
+
+#define BUSY 0x80000000
@@ -101,7 +94,6 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#define DATA_SHIFT 0
+#define ADDR_SHIFT 8
+
-+
+static void __iomem *bridge_base;
+static void __iomem *pcie_base;
+
@@ -130,17 +122,17 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+static inline void pcie_m32(u32 clr, u32 set, unsigned reg)
+{
+ u32 val = pcie_r32(reg);
++
+ val &= ~clr;
+ val |= set;
+ pcie_w32(val, reg);
+}
+
-+int wait_pciephy_busy(void)
++static int wait_pciephy_busy(void)
+{
+ unsigned long reg_value = 0x0, retry = 0;
+
+ while (1) {
-+ //reg_value = rareg(READMODE, PCIEPHY0_CFG, 0);
+ reg_value = pcie_r32(PCIEPHY0_CFG);
+
+ if (reg_value & BUSY)
@@ -169,10 +161,14 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ u8 func = PCI_FUNC(devfn);
+ u32 address;
+ u32 data;
++ u32 num = 0;
++
++ if (bus)
++ num = bus->number;
+
-+ address = (((where & 0xF00) >> 8) << 24) | (bus->number << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
++ address = (((where & 0xF00) >> 8) << 24) | (num << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
+ bridge_w32(address, RALINK_PCI_CONFIG_ADDR);
-+ data = bridge_r32(RALINK_PCI_CONFIG_DATA_VIRTUAL_REG);
++ data = bridge_r32(RALINK_PCI_CONFIG_DATA_VIRT_REG);
+
+ switch (size) {
+ case 1:
@@ -195,10 +191,14 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ u8 func = PCI_FUNC(devfn);
+ u32 address;
+ u32 data;
++ u32 num = 0;
+
-+ address = (((where & 0xF00) >> 8) << 24) | (bus->number << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
++ if (bus)
++ num = bus->number;
++
++ address = (((where & 0xF00) >> 8) << 24) | (num << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | 0x80000000;
+ bridge_w32(address, RALINK_PCI_CONFIG_ADDR);
-+ data = bridge_r32(RALINK_PCI_CONFIG_DATA_VIRTUAL_REG);
++ data = bridge_r32(RALINK_PCI_CONFIG_DATA_VIRT_REG);
+
+ switch (size) {
+ case 1:
@@ -214,69 +214,39 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ break;
+ }
+
-+ bridge_w32(data, RALINK_PCI_CONFIG_DATA_VIRTUAL_REG);
++ bridge_w32(data, RALINK_PCI_CONFIG_DATA_VIRT_REG);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
-+struct pci_ops mt7620a_pci_ops= {
++struct pci_ops mt7620_pci_ops= {
+ .read = pci_config_read,
+ .write = pci_config_write,
+};
+
-+static struct resource mt7620a_res_pci_mem1 = {
-+ .name = "pci memory",
-+ .start = RALINK_PCI_MM_MAP_BASE,
-+ .end = (u32) ((RALINK_PCI_MM_MAP_BASE + (unsigned char *)0x0fffffff)),
-+ .flags = IORESOURCE_MEM,
-+};
-+static struct resource mt7620a_res_pci_io1 = {
-+ .name = "pci io",
-+ .start = RALINK_PCI_IO_MAP_BASE,
-+ .end = (u32) ((RALINK_PCI_IO_MAP_BASE + (unsigned char *)0x0ffff)),
-+ .flags = IORESOURCE_IO,
-+};
-+
-+struct pci_controller mt7620a_controller = {
-+ .pci_ops = &mt7620a_pci_ops,
-+ .mem_resource = &mt7620a_res_pci_mem1,
-+ .io_resource = &mt7620a_res_pci_io1,
++static struct resource mt7620_res_pci_mem1;
++static struct resource mt7620_res_pci_io1;
++struct pci_controller mt7620_controller = {
++ .pci_ops = &mt7620_pci_ops,
++ .mem_resource = &mt7620_res_pci_mem1,
+ .mem_offset = 0x00000000UL,
++ .io_resource = &mt7620_res_pci_io1,
+ .io_offset = 0x00000000UL,
+ .io_map_base = 0xa0000000,
+};
+
-+static int mt7620a_pci_probe(struct platform_device *pdev)
-+{
-+ struct resource *bridge_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ struct resource *pcie_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-+
-+ rstpcie0 = devm_reset_control_get(&pdev->dev, "pcie0");
-+ if (IS_ERR(rstpcie0))
-+ return PTR_ERR(rstpcie0);
-+
-+ bridge_base = devm_request_and_ioremap(&pdev->dev, bridge_res);
-+ if (!bridge_base)
-+ return -ENOMEM;
-+
-+ pcie_base = devm_request_and_ioremap(&pdev->dev, pcie_res);
-+ if (!pcie_base)
-+ return -ENOMEM;
-+
-+ iomem_resource.start = 0;
-+ iomem_resource.end= ~0;
-+ ioport_resource.start= 0;
-+ ioport_resource.end = ~0;
-+
++static int mt7620_pci_hw_init(struct platform_device *pdev) {
+ /* PCIE: bypass PCIe DLL */
+ pcie_phy(0x0, 0x80);
+ pcie_phy(0x1, 0x04);
++
+ /* PCIE: Elastic buffer control */
+ pcie_phy(0x68, 0xB4);
+
+ reset_control_assert(rstpcie0);
++
+ rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
-+ rt_sysc_m32(1<<19, 1<<31, PPLL_DRV);
++ rt_sysc_m32(BIT(19), BIT(31), PPLL_DRV);
+ rt_sysc_m32(0x3 << 16, 0, RALINK_GPIOMODE);
+
+ reset_control_deassert(rstpcie0);
@@ -284,13 +254,13 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+
+ mdelay(100);
+
-+ if (!(rt_sysc_r32(PPLL_CFG1) & 1<<23)) {
-+ printk("MT7620 PPLL unlock\n");
++ if (!(rt_sysc_r32(PPLL_CFG1) & BIT(23))) {
++ dev_err(&pdev->dev, "MT7620 PPLL unlock\n");
+ reset_control_assert(rstpcie0);
-+ rt_sysc_m32(BIT(26), 0, RALINK_CLKCFG1);
-+ return 0;
++ rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
++ return -1;
+ }
-+ rt_sysc_m32((0x1<<18) | (0x1<<17), (0x1 << 19) | (0x1 << 31), PPLL_DRV);
++ rt_sysc_m32(BIT(18) | BIT(17), BIT(19) | BIT(31), PPLL_DRV);
+
+ mdelay(100);
+ reset_control_assert(rstpcie0);
@@ -299,39 +269,111 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ rt_sysc_m32(~0x7fffffff, 0x80000000, RALINK_PCIE_CLK_GEN);
+ rt_sysc_m32(~0x80ffffff, 0xa << 24, RALINK_PCIE_CLK_GEN1);
+
-+ mdelay(50);
++ return 0;
++}
++
++static int mt7628_pci_hw_init(struct platform_device *pdev) {
++ u32 val = 0;
++
++ rt_sysc_m32(BIT(16), 0, RALINK_GPIOMODE);
+ reset_control_deassert(rstpcie0);
++ rt_sysc_m32(0, RALINK_PCIE0_CLK_EN, RALINK_CLKCFG1);
++ mdelay(100);
++
++ pcie_m32(~0xff, 0x5, RALINK_PCIEPHY_P0_CTL_OFFSET);
++
++ pci_config_read(NULL, 0, 0x70c, 4, &val);
++ val &= ~(0xff) << 8;
++ val |= 0x50 << 8;
++ pci_config_write(NULL, 0, 0x70c, 4, val);
++
++ pci_config_read(NULL, 0, 0x70c, 4, &val);
++ dev_err(&pdev->dev, "Port 0 N_FTS = %x\n", (unsigned int) val);
++
++ return 0;
++}
++
++static int mt7620_pci_probe(struct platform_device *pdev)
++{
++ struct resource *bridge_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ struct resource *pcie_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
++ u32 val = 0;
++
++ rstpcie0 = devm_reset_control_get(&pdev->dev, "pcie0");
++ if (IS_ERR(rstpcie0))
++ return PTR_ERR(rstpcie0);
++
++ bridge_base = devm_request_and_ioremap(&pdev->dev, bridge_res);
++ if (!bridge_base)
++ return -ENOMEM;
++
++ pcie_base = devm_request_and_ioremap(&pdev->dev, pcie_res);
++ if (!pcie_base)
++ return -ENOMEM;
++
++ iomem_resource.start = 0;
++ iomem_resource.end = ~0;
++ ioport_resource.start = 0;
++ ioport_resource.end = ~0;
++
++ /* bring up the pci core */
++ switch (mt762x_soc) {
++ case MT762X_SOC_MT7620A:
++ if (mt7620_pci_hw_init(pdev))
++ return -1;
++ break;
++
++ case MT762X_SOC_MT7628AN:
++ if (mt7628_pci_hw_init(pdev))
++ return -1;
++ break;
++
++ default:
++ dev_err(&pdev->dev, "pcie is not supported on this hardware\n");
++ return -1;
++ }
++ mdelay(50);
++
++ /* enable write access */
+ pcie_m32(BIT(1), 0, RALINK_PCI_PCICFG_ADDR);
+ mdelay(100);
+
-+ if (( pcie_r32(RALINK_PCI0_STATUS) & 0x1) == 0) {
++ /* check if there is a card present */
++ if ((pcie_r32(RALINK_PCI0_STATUS) & 0x1) == 0) {
+ reset_control_assert(rstpcie0);
+ rt_sysc_m32(RALINK_PCIE0_CLK_EN, 0, RALINK_CLKCFG1);
-+ rt_sysc_m32(LC_CKDRVPD_, PDRV_SW_SET, PPLL_DRV);
-+ printk("PCIE0 no card, disable it(RST&CLK)\n");
++ if (mt762x_soc == MT762X_SOC_MT7620A)
++ rt_sysc_m32(LC_CKDRVPD_, PDRV_SW_SET, PPLL_DRV);
++ dev_err(&pdev->dev, "PCIE0 no card, disable it(RST&CLK)\n");
++ return -1;
+ }
+
++ /* setup ranges */
+ bridge_w32(0xffffffff, RALINK_PCI_MEMBASE);
+ bridge_w32(RALINK_PCI_IO_MAP_BASE, RALINK_PCI_IOBASE);
+
-+ pcie_w32(0x7FFF0000, RALINK_PCI0_BAR0SETUP_ADDR);
++ pcie_w32(0x7FFF0001, RALINK_PCI0_BAR0SETUP_ADDR);
+ pcie_w32(MEMORY_BASE, RALINK_PCI0_IMBASEBAR0_ADDR);
-+ pcie_w32(0x08021814, RALINK_PCI0_ID);
+ pcie_w32(0x06040001, RALINK_PCI0_CLASS);
-+ pcie_w32(0x28801814, RALINK_PCI0_SUBID);
++
++ /* enable interrupts */
+ pcie_m32(0, BIT(20), RALINK_PCI_PCIMSK_ADDR);
+
-+ register_pci_controller(&mt7620a_controller);
++ /* voodoo from the SDK driver */
++ pci_config_read(NULL, 0, 4, 4, &val);
++ pci_config_write(NULL, 0, 4, 4, val | 0x7);
++
++ pci_load_of_ranges(&mt7620_controller, pdev->dev.of_node);
++ register_pci_controller(&mt7620_controller);
+
+ return 0;
+}
+
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
-+ const struct resource *res;
+ u16 cmd;
+ u32 val;
-+ int i, irq = 0;
++ int irq = 0;
+
+ if ((dev->bus->number == 0) && (slot == 0)) {
+ pcie_w32(0x7FFF0001, RALINK_PCI0_BAR0SETUP_ADDR); //open 7FFF:2G; ENABLE
@@ -340,14 +382,10 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ } else if ((dev->bus->number == 1) && (slot == 0x0)) {
+ irq = RALINK_INT_PCIE0;
+ } else {
-+ printk("bus=0x%x, slot = 0x%x\n", dev->bus->number, slot);
++ dev_err(&dev->dev, "no irq found - bus=0x%x, slot = 0x%x\n", dev->bus->number, slot);
+ return 0;
+ }
+
-+ for (i = 0; i < 6; i++) {
-+ res = &dev->resource[i];
-+ }
-+
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 0x14); //configure cache line size 0x14
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xFF); //configure latency timer 0x10
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
@@ -366,27 +404,27 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ return 0;
+}
+
-+static const struct of_device_id mt7620a_pci_ids[] = {
-+ { .compatible = "ralink,mt7620a-pci" },
++static const struct of_device_id mt7620_pci_ids[] = {
++ { .compatible = "mediatek,mt7620-pci" },
+ {},
+};
-+MODULE_DEVICE_TABLE(of, mt7620a_pci_ids);
++MODULE_DEVICE_TABLE(of, mt7620_pci_ids);
+
-+static struct platform_driver mt7620a_pci_driver = {
-+ .probe = mt7620a_pci_probe,
++static struct platform_driver mt7620_pci_driver = {
++ .probe = mt7620_pci_probe,
+ .driver = {
-+ .name = "mt7620a-pci",
++ .name = "mt7620-pci",
+ .owner = THIS_MODULE,
-+ .of_match_table = of_match_ptr(mt7620a_pci_ids),
++ .of_match_table = of_match_ptr(mt7620_pci_ids),
+ },
+};
+
-+static int __init mt7620a_pci_init(void)
++static int __init mt7620_pci_init(void)
+{
-+ return platform_driver_register(&mt7620a_pci_driver);
++ return platform_driver_register(&mt7620_pci_driver);
+}
+
-+arch_initcall(mt7620a_pci_init);
++arch_initcall(mt7620_pci_init);
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -39,6 +39,7 @@ choice
@@ -397,3 +435,13 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
config SOC_MT7621
bool "MT7621"
+--- a/arch/mips/include/asm/mach-ralink/mt7620.h
++++ b/arch/mips/include/asm/mach-ralink/mt7620.h
+@@ -19,6 +19,7 @@ enum mt762x_soc_type {
+ MT762X_SOC_MT7620N,
+ MT762X_SOC_MT7628AN,
+ };
++extern enum mt762x_soc_type mt762x_soc;
+
+ #define MT7620_SYSC_BASE 0x10000000
+
generated by cgit v1.1 at 2024-11-14 05:52:31 +0000