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-rw-r--r--arch/arm/mach-cns3xxx/Makefile3
-rw-r--r--arch/arm/mach-cns3xxx/cns3420vb.c4
-rw-r--r--arch/arm/mach-cns3xxx/devices.c111
-rw-r--r--arch/arm/mach-cns3xxx/devices.h20
-rw-r--r--arch/arm/mach-cns3xxx/include/mach/cns3xxx.h91
-rw-r--r--arch/arm/mach-cns3xxx/pcie.c389
-rw-r--r--arch/arm/mach-cns3xxx/pm.c31
7 files changed, 594 insertions, 55 deletions
diff --git a/arch/arm/mach-cns3xxx/Makefile b/arch/arm/mach-cns3xxx/Makefile
index 427507a..11033f1 100644
--- a/arch/arm/mach-cns3xxx/Makefile
+++ b/arch/arm/mach-cns3xxx/Makefile
@@ -1,2 +1,3 @@
-obj-$(CONFIG_ARCH_CNS3XXX) += core.o pm.o
+obj-$(CONFIG_ARCH_CNS3XXX) += core.o pm.o devices.o
+obj-$(CONFIG_PCI) += pcie.o
obj-$(CONFIG_MACH_CNS3420VB) += cns3420vb.o
diff --git a/arch/arm/mach-cns3xxx/cns3420vb.c b/arch/arm/mach-cns3xxx/cns3420vb.c
index 2e30c82..9df8391 100644
--- a/arch/arm/mach-cns3xxx/cns3420vb.c
+++ b/arch/arm/mach-cns3xxx/cns3420vb.c
@@ -32,6 +32,7 @@
#include <mach/cns3xxx.h>
#include <mach/irqs.h>
#include "core.h"
+#include "devices.h"
/*
* NOR Flash
@@ -117,6 +118,9 @@ static void __init cns3420_init(void)
{
platform_add_devices(cns3420_pdevs, ARRAY_SIZE(cns3420_pdevs));
+ cns3xxx_ahci_init();
+ cns3xxx_sdhci_init();
+
pm_power_off = cns3xxx_power_off;
}
diff --git a/arch/arm/mach-cns3xxx/devices.c b/arch/arm/mach-cns3xxx/devices.c
new file mode 100644
index 0000000..50b4d31
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/devices.c
@@ -0,0 +1,111 @@
+/*
+ * CNS3xxx common devices
+ *
+ * Copyright 2008 Cavium Networks
+ * Scott Shu
+ * Copyright 2010 MontaVista Software, LLC.
+ * Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/compiler.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <mach/cns3xxx.h>
+#include <mach/irqs.h>
+#include "core.h"
+#include "devices.h"
+
+/*
+ * AHCI
+ */
+static struct resource cns3xxx_ahci_resource[] = {
+ [0] = {
+ .start = CNS3XXX_SATA2_BASE,
+ .end = CNS3XXX_SATA2_BASE + CNS3XXX_SATA2_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CNS3XXX_SATA,
+ .end = IRQ_CNS3XXX_SATA,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static u64 cns3xxx_ahci_dmamask = DMA_BIT_MASK(32);
+
+static struct platform_device cns3xxx_ahci_pdev = {
+ .name = "ahci",
+ .id = 0,
+ .resource = cns3xxx_ahci_resource,
+ .num_resources = ARRAY_SIZE(cns3xxx_ahci_resource),
+ .dev = {
+ .dma_mask = &cns3xxx_ahci_dmamask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
+void __init cns3xxx_ahci_init(void)
+{
+ u32 tmp;
+
+ tmp = __raw_readl(MISC_SATA_POWER_MODE);
+ tmp |= 0x1 << 16; /* Disable SATA PHY 0 from SLUMBER Mode */
+ tmp |= 0x1 << 17; /* Disable SATA PHY 1 from SLUMBER Mode */
+ __raw_writel(tmp, MISC_SATA_POWER_MODE);
+
+ /* Enable SATA PHY */
+ cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY0);
+ cns3xxx_pwr_power_up(0x1 << PM_PLL_HM_PD_CTRL_REG_OFFSET_SATA_PHY1);
+
+ /* Enable SATA Clock */
+ cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_SATA);
+
+ /* De-Asscer SATA Reset */
+ cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SATA));
+
+ platform_device_register(&cns3xxx_ahci_pdev);
+}
+
+/*
+ * SDHCI
+ */
+static struct resource cns3xxx_sdhci_resources[] = {
+ [0] = {
+ .start = CNS3XXX_SDIO_BASE,
+ .end = CNS3XXX_SDIO_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_CNS3XXX_SDIO,
+ .end = IRQ_CNS3XXX_SDIO,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device cns3xxx_sdhci_pdev = {
+ .name = "sdhci-cns3xxx",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(cns3xxx_sdhci_resources),
+ .resource = cns3xxx_sdhci_resources,
+};
+
+void __init cns3xxx_sdhci_init(void)
+{
+ u32 __iomem *gpioa = __io(CNS3XXX_MISC_BASE_VIRT + 0x0014);
+ u32 gpioa_pins = __raw_readl(gpioa);
+
+ /* MMC/SD pins share with GPIOA */
+ gpioa_pins |= 0x1fff0004;
+ __raw_writel(gpioa_pins, gpioa);
+
+ cns3xxx_pwr_clk_en(CNS3XXX_PWR_CLK_EN(SDIO));
+ cns3xxx_pwr_soft_rst(CNS3XXX_PWR_SOFTWARE_RST(SDIO));
+
+ platform_device_register(&cns3xxx_sdhci_pdev);
+}
diff --git a/arch/arm/mach-cns3xxx/devices.h b/arch/arm/mach-cns3xxx/devices.h
new file mode 100644
index 0000000..27e15a1
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/devices.h
@@ -0,0 +1,20 @@
+/*
+ * CNS3xxx common devices
+ *
+ * Copyright 2008 Cavium Networks
+ * Scott Shu
+ * Copyright 2010 MontaVista Software, LLC.
+ * Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __CNS3XXX_DEVICES_H_
+#define __CNS3XXX_DEVICES_H_
+
+void __init cns3xxx_ahci_init(void);
+void __init cns3xxx_sdhci_init(void);
+
+#endif /* __CNS3XXX_DEVICES_H_ */
diff --git a/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h b/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
index 8a2f5a2..6dbce13 100644
--- a/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
+++ b/arch/arm/mach-cns3xxx/include/mach/cns3xxx.h
@@ -247,37 +247,36 @@
* Misc block
*/
#define MISC_MEM_MAP(offs) (void __iomem *)(CNS3XXX_MISC_BASE_VIRT + (offs))
-#define MISC_MEM_MAP_VALUE(offset) (*((volatile unsigned int *)(CNS3XXX_MISC_BASE_VIRT + (offset))))
-
-#define MISC_MEMORY_REMAP_REG MISC_MEM_MAP_VALUE(0x00)
-#define MISC_CHIP_CONFIG_REG MISC_MEM_MAP_VALUE(0x04)
-#define MISC_DEBUG_PROBE_DATA_REG MISC_MEM_MAP_VALUE(0x08)
-#define MISC_DEBUG_PROBE_SELECTION_REG MISC_MEM_MAP_VALUE(0x0C)
-#define MISC_IO_PIN_FUNC_SELECTION_REG MISC_MEM_MAP_VALUE(0x10)
-#define MISC_GPIOA_PIN_ENABLE_REG MISC_MEM_MAP_VALUE(0x14)
-#define MISC_GPIOB_PIN_ENABLE_REG MISC_MEM_MAP_VALUE(0x18)
-#define MISC_IO_PAD_DRIVE_STRENGTH_CTRL_A MISC_MEM_MAP_VALUE(0x1C)
-#define MISC_IO_PAD_DRIVE_STRENGTH_CTRL_B MISC_MEM_MAP_VALUE(0x20)
-#define MISC_GPIOA_15_0_PULL_CTRL_REG MISC_MEM_MAP_VALUE(0x24)
-#define MISC_GPIOA_16_31_PULL_CTRL_REG MISC_MEM_MAP_VALUE(0x28)
-#define MISC_GPIOB_15_0_PULL_CTRL_REG MISC_MEM_MAP_VALUE(0x2C)
-#define MISC_GPIOB_16_31_PULL_CTRL_REG MISC_MEM_MAP_VALUE(0x30)
-#define MISC_IO_PULL_CTRL_REG MISC_MEM_MAP_VALUE(0x34)
-#define MISC_E_FUSE_31_0_REG MISC_MEM_MAP_VALUE(0x40)
-#define MISC_E_FUSE_63_32_REG MISC_MEM_MAP_VALUE(0x44)
-#define MISC_E_FUSE_95_64_REG MISC_MEM_MAP_VALUE(0x48)
-#define MISC_E_FUSE_127_96_REG MISC_MEM_MAP_VALUE(0x4C)
-#define MISC_SOFTWARE_TEST_1_REG MISC_MEM_MAP_VALUE(0x50)
-#define MISC_SOFTWARE_TEST_2_REG MISC_MEM_MAP_VALUE(0x54)
-
-#define MISC_SATA_POWER_MODE MISC_MEM_MAP_VALUE(0x310)
-
-#define MISC_USB_CFG_REG MISC_MEM_MAP_VALUE(0x800)
-#define MISC_USB_STS_REG MISC_MEM_MAP_VALUE(0x804)
-#define MISC_USBPHY00_CFG_REG MISC_MEM_MAP_VALUE(0x808)
-#define MISC_USBPHY01_CFG_REG MISC_MEM_MAP_VALUE(0x80c)
-#define MISC_USBPHY10_CFG_REG MISC_MEM_MAP_VALUE(0x810)
-#define MISC_USBPHY11_CFG_REG MISC_MEM_MAP_VALUE(0x814)
+
+#define MISC_MEMORY_REMAP_REG MISC_MEM_MAP(0x00)
+#define MISC_CHIP_CONFIG_REG MISC_MEM_MAP(0x04)
+#define MISC_DEBUG_PROBE_DATA_REG MISC_MEM_MAP(0x08)
+#define MISC_DEBUG_PROBE_SELECTION_REG MISC_MEM_MAP(0x0C)
+#define MISC_IO_PIN_FUNC_SELECTION_REG MISC_MEM_MAP(0x10)
+#define MISC_GPIOA_PIN_ENABLE_REG MISC_MEM_MAP(0x14)
+#define MISC_GPIOB_PIN_ENABLE_REG MISC_MEM_MAP(0x18)
+#define MISC_IO_PAD_DRIVE_STRENGTH_CTRL_A MISC_MEM_MAP(0x1C)
+#define MISC_IO_PAD_DRIVE_STRENGTH_CTRL_B MISC_MEM_MAP(0x20)
+#define MISC_GPIOA_15_0_PULL_CTRL_REG MISC_MEM_MAP(0x24)
+#define MISC_GPIOA_16_31_PULL_CTRL_REG MISC_MEM_MAP(0x28)
+#define MISC_GPIOB_15_0_PULL_CTRL_REG MISC_MEM_MAP(0x2C)
+#define MISC_GPIOB_16_31_PULL_CTRL_REG MISC_MEM_MAP(0x30)
+#define MISC_IO_PULL_CTRL_REG MISC_MEM_MAP(0x34)
+#define MISC_E_FUSE_31_0_REG MISC_MEM_MAP(0x40)
+#define MISC_E_FUSE_63_32_REG MISC_MEM_MAP(0x44)
+#define MISC_E_FUSE_95_64_REG MISC_MEM_MAP(0x48)
+#define MISC_E_FUSE_127_96_REG MISC_MEM_MAP(0x4C)
+#define MISC_SOFTWARE_TEST_1_REG MISC_MEM_MAP(0x50)
+#define MISC_SOFTWARE_TEST_2_REG MISC_MEM_MAP(0x54)
+
+#define MISC_SATA_POWER_MODE MISC_MEM_MAP(0x310)
+
+#define MISC_USB_CFG_REG MISC_MEM_MAP(0x800)
+#define MISC_USB_STS_REG MISC_MEM_MAP(0x804)
+#define MISC_USBPHY00_CFG_REG MISC_MEM_MAP(0x808)
+#define MISC_USBPHY01_CFG_REG MISC_MEM_MAP(0x80c)
+#define MISC_USBPHY10_CFG_REG MISC_MEM_MAP(0x810)
+#define MISC_USBPHY11_CFG_REG MISC_MEM_MAP(0x814)
#define MISC_PCIEPHY_CMCTL(x) MISC_MEM_MAP(0x900 + (x) * 0x004)
#define MISC_PCIEPHY_CTL(x) MISC_MEM_MAP(0x940 + (x) * 0x100)
@@ -300,21 +299,21 @@
/*
* Power management and clock control
*/
-#define PMU_REG_VALUE(offset) (*((volatile unsigned int *)(CNS3XXX_PM_BASE_VIRT + (offset))))
-
-#define PM_CLK_GATE_REG PMU_REG_VALUE(0x000)
-#define PM_SOFT_RST_REG PMU_REG_VALUE(0x004)
-#define PM_HS_CFG_REG PMU_REG_VALUE(0x008)
-#define PM_CACTIVE_STA_REG PMU_REG_VALUE(0x00C)
-#define PM_PWR_STA_REG PMU_REG_VALUE(0x010)
-#define PM_CLK_CTRL_REG PMU_REG_VALUE(0x014)
-#define PM_PLL_LCD_I2S_CTRL_REG PMU_REG_VALUE(0x018)
-#define PM_PLL_HM_PD_CTRL_REG PMU_REG_VALUE(0x01C)
-#define PM_REGULAT_CTRL_REG PMU_REG_VALUE(0x020)
-#define PM_WDT_CTRL_REG PMU_REG_VALUE(0x024)
-#define PM_WU_CTRL0_REG PMU_REG_VALUE(0x028)
-#define PM_WU_CTRL1_REG PMU_REG_VALUE(0x02C)
-#define PM_CSR_REG PMU_REG_VALUE(0x030)
+#define PMU_MEM_MAP(offs) (void __iomem *)(CNS3XXX_PM_BASE_VIRT + (offs))
+
+#define PM_CLK_GATE_REG PMU_MEM_MAP(0x000)
+#define PM_SOFT_RST_REG PMU_MEM_MAP(0x004)
+#define PM_HS_CFG_REG PMU_MEM_MAP(0x008)
+#define PM_CACTIVE_STA_REG PMU_MEM_MAP(0x00C)
+#define PM_PWR_STA_REG PMU_MEM_MAP(0x010)
+#define PM_CLK_CTRL_REG PMU_MEM_MAP(0x014)
+#define PM_PLL_LCD_I2S_CTRL_REG PMU_MEM_MAP(0x018)
+#define PM_PLL_HM_PD_CTRL_REG PMU_MEM_MAP(0x01C)
+#define PM_REGULAT_CTRL_REG PMU_MEM_MAP(0x020)
+#define PM_WDT_CTRL_REG PMU_MEM_MAP(0x024)
+#define PM_WU_CTRL0_REG PMU_MEM_MAP(0x028)
+#define PM_WU_CTRL1_REG PMU_MEM_MAP(0x02C)
+#define PM_CSR_REG PMU_MEM_MAP(0x030)
/* PM_CLK_GATE_REG */
#define PM_CLK_GATE_REG_OFFSET_SDIO (25)
diff --git a/arch/arm/mach-cns3xxx/pcie.c b/arch/arm/mach-cns3xxx/pcie.c
new file mode 100644
index 0000000..38088c3
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/pcie.c
@@ -0,0 +1,389 @@
+/*
+ * PCI-E support for CNS3xxx
+ *
+ * Copyright 2008 Cavium Networks
+ * Richard Liu <richard.liu@caviumnetworks.com>
+ * Copyright 2010 MontaVista Software, LLC.
+ * Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/bug.h>
+#include <linux/pci.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+#include <asm/mach/map.h>
+#include <mach/cns3xxx.h>
+#include "core.h"
+
+enum cns3xxx_access_type {
+ CNS3XXX_HOST_TYPE = 0,
+ CNS3XXX_CFG0_TYPE,
+ CNS3XXX_CFG1_TYPE,
+ CNS3XXX_NUM_ACCESS_TYPES,
+};
+
+struct cns3xxx_pcie {
+ struct map_desc cfg_bases[CNS3XXX_NUM_ACCESS_TYPES];
+ unsigned int irqs[2];
+ struct resource res_io;
+ struct resource res_mem;
+ struct hw_pci hw_pci;
+
+ bool linked;
+};
+
+static struct cns3xxx_pcie cns3xxx_pcie[]; /* forward decl. */
+
+static struct cns3xxx_pcie *sysdata_to_cnspci(void *sysdata)
+{
+ struct pci_sys_data *root = sysdata;
+
+ return &cns3xxx_pcie[root->domain];
+}
+
+static struct cns3xxx_pcie *pdev_to_cnspci(struct pci_dev *dev)
+{
+ return sysdata_to_cnspci(dev->sysdata);
+}
+
+static struct cns3xxx_pcie *pbus_to_cnspci(struct pci_bus *bus)
+{
+ return sysdata_to_cnspci(bus->sysdata);
+}
+
+static void __iomem *cns3xxx_pci_cfg_base(struct pci_bus *bus,
+ unsigned int devfn, int where)
+{
+ struct cns3xxx_pcie *cnspci = pbus_to_cnspci(bus);
+ int busno = bus->number;
+ int slot = PCI_SLOT(devfn);
+ int offset;
+ enum cns3xxx_access_type type;
+ void __iomem *base;
+
+ /* If there is no link, just show the CNS PCI bridge. */
+ if (!cnspci->linked && (busno > 0 || slot > 0))
+ return NULL;
+
+ /*
+ * The CNS PCI bridge doesn't fit into the PCI hierarchy, though
+ * we still want to access it. For this to work, we must place
+ * the first device on the same bus as the CNS PCI bridge.
+ */
+ if (busno == 0) {
+ if (slot > 1)
+ return NULL;
+ type = slot;
+ } else {
+ type = CNS3XXX_CFG1_TYPE;
+ }
+
+ base = (void __iomem *)cnspci->cfg_bases[type].virtual;
+ offset = ((busno & 0xf) << 20) | (devfn << 12) | (where & 0xffc);
+
+ return base + offset;
+}
+
+static int cns3xxx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 *val)
+{
+ u32 v;
+ void __iomem *base;
+ u32 mask = (0x1ull << (size * 8)) - 1;
+ int shift = (where % 4) * 8;
+
+ base = cns3xxx_pci_cfg_base(bus, devfn, where);
+ if (!base) {
+ *val = 0xffffffff;
+ return PCIBIOS_SUCCESSFUL;
+ }
+
+ v = __raw_readl(base);
+
+ if (bus->number == 0 && devfn == 0 &&
+ (where & 0xffc) == PCI_CLASS_REVISION) {
+ /*
+ * RC's class is 0xb, but Linux PCI driver needs 0x604
+ * for a PCIe bridge. So we must fixup the class code
+ * to 0x604 here.
+ */
+ v &= 0xff;
+ v |= 0x604 << 16;
+ }
+
+ *val = (v >> shift) & mask;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int cns3xxx_pci_write_config(struct pci_bus *bus, unsigned int devfn,
+ int where, int size, u32 val)
+{
+ u32 v;
+ void __iomem *base;
+ u32 mask = (0x1ull << (size * 8)) - 1;
+ int shift = (where % 4) * 8;
+
+ base = cns3xxx_pci_cfg_base(bus, devfn, where);
+ if (!base)
+ return PCIBIOS_SUCCESSFUL;
+
+ v = __raw_readl(base);
+
+ v &= ~(mask << shift);
+ v |= (val & mask) << shift;
+
+ __raw_writel(v, base);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int cns3xxx_pci_setup(int nr, struct pci_sys_data *sys)
+{
+ struct cns3xxx_pcie *cnspci = sysdata_to_cnspci(sys);
+ struct resource *res_io = &cnspci->res_io;
+ struct resource *res_mem = &cnspci->res_mem;
+ struct resource **sysres = sys->resource;
+
+ BUG_ON(request_resource(&iomem_resource, res_io) ||
+ request_resource(&iomem_resource, res_mem));
+
+ sysres[0] = res_io;
+ sysres[1] = res_mem;
+
+ return 1;
+}
+
+static struct pci_ops cns3xxx_pcie_ops = {
+ .read = cns3xxx_pci_read_config,
+ .write = cns3xxx_pci_write_config,
+};
+
+static struct pci_bus *cns3xxx_pci_scan_bus(int nr, struct pci_sys_data *sys)
+{
+ return pci_scan_bus(sys->busnr, &cns3xxx_pcie_ops, sys);
+}
+
+static int cns3xxx_pcie_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ struct cns3xxx_pcie *cnspci = pdev_to_cnspci(dev);
+ int irq = cnspci->irqs[slot];
+
+ pr_info("PCIe map irq: %04d:%02x:%02x.%02x slot %d, pin %d, irq: %d\n",
+ pci_domain_nr(dev->bus), dev->bus->number, PCI_SLOT(dev->devfn),
+ PCI_FUNC(dev->devfn), slot, pin, irq);
+
+ return irq;
+}
+
+static struct cns3xxx_pcie cns3xxx_pcie[] = {
+ [0] = {
+ .cfg_bases = {
+ [CNS3XXX_HOST_TYPE] = {
+ .virtual = CNS3XXX_PCIE0_HOST_BASE_VIRT,
+ .pfn = __phys_to_pfn(CNS3XXX_PCIE0_HOST_BASE),
+ .length = SZ_16M,
+ .type = MT_DEVICE,
+ },
+ [CNS3XXX_CFG0_TYPE] = {
+ .virtual = CNS3XXX_PCIE0_CFG0_BASE_VIRT,
+ .pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG0_BASE),
+ .length = SZ_16M,
+ .type = MT_DEVICE,
+ },
+ [CNS3XXX_CFG1_TYPE] = {
+ .virtual = CNS3XXX_PCIE0_CFG1_BASE_VIRT,
+ .pfn = __phys_to_pfn(CNS3XXX_PCIE0_CFG1_BASE),
+ .length = SZ_16M,
+ .type = MT_DEVICE,
+ },
+ },
+ .res_io = {
+ .name = "PCIe0 I/O space",
+ .start = CNS3XXX_PCIE0_IO_BASE,
+ .end = CNS3XXX_PCIE0_IO_BASE + SZ_16M - 1,
+ .flags = IORESOURCE_IO,
+ },
+ .res_mem = {
+ .name = "PCIe0 non-prefetchable",
+ .start = CNS3XXX_PCIE0_MEM_BASE,
+ .end = CNS3XXX_PCIE0_MEM_BASE + SZ_16M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .irqs = { IRQ_CNS3XXX_PCIE0_RC, IRQ_CNS3XXX_PCIE0_DEVICE, },
+ .hw_pci = {
+ .domain = 0,
+ .swizzle = pci_std_swizzle,
+ .nr_controllers = 1,
+ .setup = cns3xxx_pci_setup,
+ .scan = cns3xxx_pci_scan_bus,
+ .map_irq = cns3xxx_pcie_map_irq,
+ },
+ },
+ [1] = {
+ .cfg_bases = {
+ [CNS3XXX_HOST_TYPE] = {
+ .virtual = CNS3XXX_PCIE1_HOST_BASE_VIRT,
+ .pfn = __phys_to_pfn(CNS3XXX_PCIE1_HOST_BASE),
+ .length = SZ_16M,
+ .type = MT_DEVICE,
+ },
+ [CNS3XXX_CFG0_TYPE] = {
+ .virtual = CNS3XXX_PCIE1_CFG0_BASE_VIRT,
+ .pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG0_BASE),
+ .length = SZ_16M,
+ .type = MT_DEVICE,
+ },
+ [CNS3XXX_CFG1_TYPE] = {
+ .virtual = CNS3XXX_PCIE1_CFG1_BASE_VIRT,
+ .pfn = __phys_to_pfn(CNS3XXX_PCIE1_CFG1_BASE),
+ .length = SZ_16M,
+ .type = MT_DEVICE,
+ },
+ },
+ .res_io = {
+ .name = "PCIe1 I/O space",
+ .start = CNS3XXX_PCIE1_IO_BASE,
+ .end = CNS3XXX_PCIE1_IO_BASE + SZ_16M - 1,
+ .flags = IORESOURCE_IO,
+ },
+ .res_mem = {
+ .name = "PCIe1 non-prefetchable",
+ .start = CNS3XXX_PCIE1_MEM_BASE,
+ .end = CNS3XXX_PCIE1_MEM_BASE + SZ_16M - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .irqs = { IRQ_CNS3XXX_PCIE1_RC, IRQ_CNS3XXX_PCIE1_DEVICE, },
+ .hw_pci = {
+ .domain = 1,
+ .swizzle = pci_std_swizzle,
+ .nr_controllers = 1,
+ .setup = cns3xxx_pci_setup,
+ .scan = cns3xxx_pci_scan_bus,
+ .map_irq = cns3xxx_pcie_map_irq,
+ },
+ },
+};
+
+static void __init cns3xxx_pcie_check_link(struct cns3xxx_pcie *cnspci)
+{
+ int port = cnspci->hw_pci.domain;
+ u32 reg;
+ unsigned long time;
+
+ reg = __raw_readl(MISC_PCIE_CTRL(port));
+ /*
+ * Enable Application Request to 1, it will exit L1 automatically,
+ * but when chip back, it will use another clock, still can use 0x1.
+ */
+ reg |= 0x3;
+ __raw_writel(reg, MISC_PCIE_CTRL(port));
+
+ pr_info("PCIe: Port[%d] Enable PCIe LTSSM\n", port);
+ pr_info("PCIe: Port[%d] Check data link layer...", port);
+
+ time = jiffies;
+ while (1) {
+ reg = __raw_readl(MISC_PCIE_PM_DEBUG(port));
+ if (reg & 0x1) {
+ pr_info("Link up.\n");
+ cnspci->linked = 1;
+ break;
+ } else if (time_after(jiffies, time + 50)) {
+ pr_info("Device not found.\n");
+ break;
+ }
+ }
+}
+
+static void __init cns3xxx_pcie_hw_init(struct cns3xxx_pcie *cnspci)
+{
+ int port = cnspci->hw_pci.domain;
+ struct pci_sys_data sd = {
+ .domain = port,
+ };
+ struct pci_bus bus = {
+ .number = 0,
+ .ops = &cns3xxx_pcie_ops,
+ .sysdata = &sd,
+ };
+ u32 io_base = cnspci->res_io.start >> 16;
+ u32 mem_base = cnspci->res_mem.start >> 16;
+ u32 host_base = cnspci->cfg_bases[CNS3XXX_HOST_TYPE].pfn;
+ u32 cfg0_base = cnspci->cfg_bases[CNS3XXX_CFG0_TYPE].pfn;
+ u32 devfn = 0;
+ u8 tmp8;
+ u16 pos;
+ u16 dc;
+
+ host_base = (__pfn_to_phys(host_base) - 1) >> 16;
+ cfg0_base = (__pfn_to_phys(cfg0_base) - 1) >> 16;
+
+ pci_bus_write_config_byte(&bus, devfn, PCI_PRIMARY_BUS, 0);
+ pci_bus_write_config_byte(&bus, devfn, PCI_SECONDARY_BUS, 1);
+ pci_bus_write_config_byte(&bus, devfn, PCI_SUBORDINATE_BUS, 1);
+
+ pci_bus_read_config_byte(&bus, devfn, PCI_PRIMARY_BUS, &tmp8);
+ pci_bus_read_config_byte(&bus, devfn, PCI_SECONDARY_BUS, &tmp8);
+ pci_bus_read_config_byte(&bus, devfn, PCI_SUBORDINATE_BUS, &tmp8);
+
+ pci_bus_write_config_word(&bus, devfn, PCI_MEMORY_BASE, mem_base);
+ pci_bus_write_config_word(&bus, devfn, PCI_MEMORY_LIMIT, host_base);
+ pci_bus_write_config_word(&bus, devfn, PCI_IO_BASE_UPPER16, io_base);
+ pci_bus_write_config_word(&bus, devfn, PCI_IO_LIMIT_UPPER16, cfg0_base);
+
+ if (!cnspci->linked)
+ return;
+
+ /* Set Device Max_Read_Request_Size to 128 byte */
+ devfn = PCI_DEVFN(1, 0);
+ pos = pci_bus_find_capability(&bus, devfn, PCI_CAP_ID_EXP);
+ pci_bus_read_config_word(&bus, devfn, pos + PCI_EXP_DEVCTL, &dc);
+ dc &= ~(0x3 << 12); /* Clear Device Control Register [14:12] */
+ pci_bus_write_config_word(&bus, devfn, pos + PCI_EXP_DEVCTL, dc);
+ pci_bus_read_config_word(&bus, devfn, pos + PCI_EXP_DEVCTL, &dc);
+ if (!(dc & (0x3 << 12)))
+ pr_info("PCIe: Set Device Max_Read_Request_Size to 128 byte\n");
+
+ /* Disable PCIe0 Interrupt Mask INTA to INTD */
+ __raw_writel(~0x3FFF, MISC_PCIE_INT_MASK(port));
+}
+
+static int cns3xxx_pcie_abort_handler(unsigned long addr, unsigned int fsr,
+ struct pt_regs *regs)
+{
+ if (fsr & (1 << 10))
+ regs->ARM_pc += 4;
+ return 0;
+}
+
+static int __init cns3xxx_pcie_init(void)
+{
+ int i;
+
+ hook_fault_code(16 + 6, cns3xxx_pcie_abort_handler, SIGBUS,
+ "imprecise external abort");
+
+ for (i = 0; i < ARRAY_SIZE(cns3xxx_pcie); i++) {
+ iotable_init(cns3xxx_pcie[i].cfg_bases,
+ ARRAY_SIZE(cns3xxx_pcie[i].cfg_bases));
+ cns3xxx_pwr_clk_en(0x1 << PM_CLK_GATE_REG_OFFSET_PCIE(i));
+ cns3xxx_pwr_soft_rst(0x1 << PM_SOFT_RST_REG_OFFST_PCIE(i));
+ cns3xxx_pcie_check_link(&cns3xxx_pcie[i]);
+ cns3xxx_pcie_hw_init(&cns3xxx_pcie[i]);
+ pci_common_init(&cns3xxx_pcie[i].hw_pci);
+ }
+
+ pci_assign_unassigned_resources();
+
+ return 0;
+}
+device_initcall(cns3xxx_pcie_init);
diff --git a/arch/arm/mach-cns3xxx/pm.c b/arch/arm/mach-cns3xxx/pm.c
index 725e1a4..38e4470 100644
--- a/arch/arm/mach-cns3xxx/pm.c
+++ b/arch/arm/mach-cns3xxx/pm.c
@@ -6,18 +6,25 @@
* published by the Free Software Foundation.
*/
+#include <linux/io.h>
#include <linux/delay.h>
#include <mach/system.h>
#include <mach/cns3xxx.h>
void cns3xxx_pwr_clk_en(unsigned int block)
{
- PM_CLK_GATE_REG |= (block & PM_CLK_GATE_REG_MASK);
+ u32 reg = __raw_readl(PM_CLK_GATE_REG);
+
+ reg |= (block & PM_CLK_GATE_REG_MASK);
+ __raw_writel(reg, PM_CLK_GATE_REG);
}
void cns3xxx_pwr_power_up(unsigned int block)
{
- PM_PLL_HM_PD_CTRL_REG &= ~(block & CNS3XXX_PWR_PLL_ALL);
+ u32 reg = __raw_readl(PM_PLL_HM_PD_CTRL_REG);
+
+ reg &= ~(block & CNS3XXX_PWR_PLL_ALL);
+ __raw_writel(reg, PM_PLL_HM_PD_CTRL_REG);
/* Wait for 300us for the PLL output clock locked. */
udelay(300);
@@ -25,22 +32,29 @@ void cns3xxx_pwr_power_up(unsigned int block)
void cns3xxx_pwr_power_down(unsigned int block)
{
+ u32 reg = __raw_readl(PM_PLL_HM_PD_CTRL_REG);
+
/* write '1' to power down */
- PM_PLL_HM_PD_CTRL_REG |= (block & CNS3XXX_PWR_PLL_ALL);
+ reg |= (block & CNS3XXX_PWR_PLL_ALL);
+ __raw_writel(reg, PM_PLL_HM_PD_CTRL_REG);
};
static void cns3xxx_pwr_soft_rst_force(unsigned int block)
{
+ u32 reg = __raw_readl(PM_SOFT_RST_REG);
+
/*
* bit 0, 28, 29 => program low to reset,
* the other else program low and then high
*/
if (block & 0x30000001) {
- PM_SOFT_RST_REG &= ~(block & PM_SOFT_RST_REG_MASK);
+ reg &= ~(block & PM_SOFT_RST_REG_MASK);
} else {
- PM_SOFT_RST_REG &= ~(block & PM_SOFT_RST_REG_MASK);
- PM_SOFT_RST_REG |= (block & PM_SOFT_RST_REG_MASK);
+ reg &= ~(block & PM_SOFT_RST_REG_MASK);
+ reg |= (block & PM_SOFT_RST_REG_MASK);
}
+
+ __raw_writel(reg, PM_SOFT_RST_REG);
}
void cns3xxx_pwr_soft_rst(unsigned int block)
@@ -73,12 +87,13 @@ void arch_reset(char mode, const char *cmd)
*/
int cns3xxx_cpu_clock(void)
{
+ u32 reg = __raw_readl(PM_CLK_CTRL_REG);
int cpu;
int cpu_sel;
int div_sel;
- cpu_sel = (PM_CLK_CTRL_REG >> PM_CLK_CTRL_REG_OFFSET_PLL_CPU_SEL) & 0xf;
- div_sel = (PM_CLK_CTRL_REG >> PM_CLK_CTRL_REG_OFFSET_CPU_CLK_DIV) & 0x3;
+ cpu_sel = (reg >> PM_CLK_CTRL_REG_OFFSET_PLL_CPU_SEL) & 0xf;
+ div_sel = (reg >> PM_CLK_CTRL_REG_OFFSET_CPU_CLK_DIV) & 0x3;
cpu = (300 + ((cpu_sel / 3) * 100) + ((cpu_sel % 3) * 33)) >> div_sel;
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