/*
- * arch/ppc/syslib/mpc10x_common.c
- *
* Common routines for the Motorola SPS MPC106, MPC107 and MPC8240 Host bridge,
* Mem ctlr, EPIC, etc.
*
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
+#include <linux/serial_8250.h>
+#include <linux/fsl_devices.h>
+#include <linux/device.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/pci-bridge.h>
#include <asm/open_pic.h>
#include <asm/mpc10x.h>
+#include <asm/ppc_sys.h>
+
+#ifdef CONFIG_MPC10X_OPENPIC
+#ifdef CONFIG_EPIC_SERIAL_MODE
+#define EPIC_IRQ_BASE (epic_serial_mode ? 16 : 5)
+#else
+#define EPIC_IRQ_BASE 5
+#endif
+#define MPC10X_I2C_IRQ (EPIC_IRQ_BASE + NUM_8259_INTERRUPTS)
+#define MPC10X_DMA0_IRQ (EPIC_IRQ_BASE + 1 + NUM_8259_INTERRUPTS)
+#define MPC10X_DMA1_IRQ (EPIC_IRQ_BASE + 2 + NUM_8259_INTERRUPTS)
+#define MPC10X_UART0_IRQ (EPIC_IRQ_BASE + 4 + NUM_8259_INTERRUPTS)
+#define MPC10X_UART1_IRQ (EPIC_IRQ_BASE + 5 + NUM_8259_INTERRUPTS)
+#else
+#define MPC10X_I2C_IRQ -1
+#define MPC10X_DMA0_IRQ -1
+#define MPC10X_DMA1_IRQ -1
+#define MPC10X_UART0_IRQ -1
+#define MPC10X_UART1_IRQ -1
+#endif
+
+static struct fsl_i2c_platform_data mpc10x_i2c_pdata = {
+ .device_flags = 0,
+};
+
+static struct plat_serial8250_port serial_plat_uart0[] = {
+ [0] = {
+ .mapbase = 0x4500,
+ .iotype = UPIO_MEM,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ },
+ { },
+};
+static struct plat_serial8250_port serial_plat_uart1[] = {
+ [0] = {
+ .mapbase = 0x4600,
+ .iotype = UPIO_MEM,
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+ },
+ { },
+};
+
+struct platform_device ppc_sys_platform_devices[] = {
+ [MPC10X_IIC1] = {
+ .name = "fsl-i2c",
+ .id = 1,
+ .dev.platform_data = &mpc10x_i2c_pdata,
+ .num_resources = 2,
+ .resource = (struct resource[]) {
+ {
+ .start = MPC10X_EUMB_I2C_OFFSET,
+ .end = MPC10X_EUMB_I2C_OFFSET +
+ MPC10X_EUMB_I2C_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_IRQ
+ },
+ },
+ },
+ [MPC10X_DMA0] = {
+ .name = "fsl-dma",
+ .id = 0,
+ .num_resources = 2,
+ .resource = (struct resource[]) {
+ {
+ .start = MPC10X_EUMB_DMA_OFFSET + 0x10,
+ .end = MPC10X_EUMB_DMA_OFFSET + 0x1f,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+ },
+ },
+ [MPC10X_DMA1] = {
+ .name = "fsl-dma",
+ .id = 1,
+ .num_resources = 2,
+ .resource = (struct resource[]) {
+ {
+ .start = MPC10X_EUMB_DMA_OFFSET + 0x20,
+ .end = MPC10X_EUMB_DMA_OFFSET + 0x2f,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+ },
+ },
+ [MPC10X_DMA1] = {
+ .name = "fsl-dma",
+ .id = 1,
+ .num_resources = 2,
+ .resource = (struct resource[]) {
+ {
+ .start = MPC10X_EUMB_DMA_OFFSET + 0x20,
+ .end = MPC10X_EUMB_DMA_OFFSET + 0x2f,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .flags = IORESOURCE_IRQ,
+ },
+ },
+ },
+ [MPC10X_UART0] = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev.platform_data = serial_plat_uart0,
+ },
+ [MPC10X_UART1] = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM1,
+ .dev.platform_data = serial_plat_uart1,
+ },
+
+};
+
+/* We use the PCI ID to match on */
+struct ppc_sys_spec *cur_ppc_sys_spec;
+struct ppc_sys_spec ppc_sys_specs[] = {
+ {
+ .ppc_sys_name = "8245",
+ .mask = 0xFFFFFFFF,
+ .value = MPC10X_BRIDGE_8245,
+ .num_devices = 5,
+ .device_list = (enum ppc_sys_devices[])
+ {
+ MPC10X_IIC1, MPC10X_DMA0, MPC10X_DMA1, MPC10X_UART0, MPC10X_UART1,
+ },
+ },
+ {
+ .ppc_sys_name = "8240",
+ .mask = 0xFFFFFFFF,
+ .value = MPC10X_BRIDGE_8240,
+ .num_devices = 3,
+ .device_list = (enum ppc_sys_devices[])
+ {
+ MPC10X_IIC1, MPC10X_DMA0, MPC10X_DMA1,
+ },
+ },
+ {
+ .ppc_sys_name = "107",
+ .mask = 0xFFFFFFFF,
+ .value = MPC10X_BRIDGE_107,
+ .num_devices = 3,
+ .device_list = (enum ppc_sys_devices[])
+ {
+ MPC10X_IIC1, MPC10X_DMA0, MPC10X_DMA1,
+ },
+ },
+ { /* default match */
+ .ppc_sys_name = "",
+ .mask = 0x00000000,
+ .value = 0x00000000,
+ },
+};
+
+/*
+ * mach_mpc10x_fixup: This function enables DUART mode if it detects
+ * if it detects two UARTS in the platform device entries.
+ */
+static int __init mach_mpc10x_fixup(struct platform_device *pdev)
+{
+ if (strncmp (pdev->name, "serial8250", 10) == 0 && pdev->id == 1)
+ writeb(readb(serial_plat_uart1[0].membase + 0x11) | 0x1,
+ serial_plat_uart1[0].membase + 0x11);
+ return 0;
+}
+static int __init mach_mpc10x_init(void)
+{
+ ppc_sys_device_fixup = mach_mpc10x_fixup;
+ return 0;
+}
+postcore_initcall(mach_mpc10x_init);
/* Set resources to match bridge memory map */
void __init
ppc_md.progress("mpc10x:exit1", 0x100);
}
}
+
/*
* Do some initialization and put the EUMB registers at the specified address
* (also map the EPIC registers into virtual space--OpenPIC_Addr will be set).
uint new_map,
uint phys_eumb_base)
{
- int host_bridge, picr1, picr1_bit;
+ int host_bridge, picr1, picr1_bit, i;
ulong pci_config_addr, pci_config_data;
u_char pir, byte;
printk("Host bridge in Agent mode\n");
/* Read or Set LMBAR & PCSRBAR? */
}
-
+
/* Set base addr of the 8240/107 EUMB. */
early_write_config_dword(hose,
0,
PCI_DEVFN(0,0),
MPC10X_CFG_EUMBBAR,
phys_eumb_base);
-
- /* Map EPIC register part of EUMB into vitual memory */
+#ifdef CONFIG_MPC10X_OPENPIC
+ /* Map EPIC register part of EUMB into vitual memory - PCORE
+ uses an i8259 instead of EPIC. */
OpenPIC_Addr =
ioremap(phys_eumb_base + MPC10X_EUMB_EPIC_OFFSET,
MPC10X_EUMB_EPIC_SIZE);
+#endif
}
#ifdef CONFIG_MPC10X_STORE_GATHERING
mpc10x_disable_store_gathering(hose);
#endif
+ /* setup platform devices for MPC10x bridges */
+ identify_ppc_sys_by_id (host_bridge);
+
+ for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
+ unsigned int dev_id = cur_ppc_sys_spec->device_list[i];
+ ppc_sys_fixup_mem_resource(&ppc_sys_platform_devices[dev_id],
+ phys_eumb_base);
+ }
+
+ /* IRQ's are determined at runtime */
+ ppc_sys_platform_devices[MPC10X_IIC1].resource[1].start = MPC10X_I2C_IRQ;
+ ppc_sys_platform_devices[MPC10X_IIC1].resource[1].end = MPC10X_I2C_IRQ;
+ ppc_sys_platform_devices[MPC10X_DMA0].resource[1].start = MPC10X_DMA0_IRQ;
+ ppc_sys_platform_devices[MPC10X_DMA0].resource[1].end = MPC10X_DMA0_IRQ;
+ ppc_sys_platform_devices[MPC10X_DMA1].resource[1].start = MPC10X_DMA1_IRQ;
+ ppc_sys_platform_devices[MPC10X_DMA1].resource[1].end = MPC10X_DMA1_IRQ;
+
+ serial_plat_uart0[0].mapbase += phys_eumb_base;
+ serial_plat_uart0[0].irq = MPC10X_UART0_IRQ;
+ serial_plat_uart0[0].membase = ioremap(serial_plat_uart0[0].mapbase, 0x100);
+
+ serial_plat_uart1[0].mapbase += phys_eumb_base;
+ serial_plat_uart1[0].irq = MPC10X_UART1_IRQ;
+ serial_plat_uart1[0].membase = ioremap(serial_plat_uart1[0].mapbase, 0x100);
+
+ /*
+ * 8240 erratum 26, 8241/8245 erratum 29, 107 erratum 23: speculative
+ * PCI reads may return stale data so turn off.
+ */
+ if ((host_bridge == MPC10X_BRIDGE_8240)
+ || (host_bridge == MPC10X_BRIDGE_8245)
+ || (host_bridge == MPC10X_BRIDGE_107)) {
+
+ early_read_config_dword(hose, 0, PCI_DEVFN(0,0),
+ MPC10X_CFG_PICR1_REG, &picr1);
+
+ picr1 &= ~MPC10X_CFG_PICR1_SPEC_PCI_RD;
+
+ early_write_config_dword(hose, 0, PCI_DEVFN(0,0),
+ MPC10X_CFG_PICR1_REG, picr1);
+ }
+
+ /*
+ * 8241/8245 erratum 28: PCI reads from local memory may return
+ * stale data. Workaround by setting PICR2[0] to disable copyback
+ * optimization. Oddly, the latest available user manual for the
+ * 8245 (Rev 2., dated 10/2003) says PICR2[0] is reserverd.
+ */
+ if (host_bridge == MPC10X_BRIDGE_8245) {
+ u32 picr2;
+
+ early_read_config_dword(hose, 0, PCI_DEVFN(0,0),
+ MPC10X_CFG_PICR2_REG, &picr2);
+
+ picr2 |= MPC10X_CFG_PICR2_COPYBACK_OPT;
+
+ early_write_config_dword(hose, 0, PCI_DEVFN(0,0),
+ MPC10X_CFG_PICR2_REG, picr2);
+ }
+
if (ppc_md.progress) ppc_md.progress("mpc10x:exit", 0x100);
return 0;
}
return 0;
}
+
+#ifdef CONFIG_MPC10X_OPENPIC
+void __init mpc10x_set_openpic(void)
+{
+ /* Map external IRQs */
+ openpic_set_sources(0, EPIC_IRQ_BASE, OpenPIC_Addr + 0x10200);
+ /* Skip reserved space and map i2c and DMA Ch[01] */
+ openpic_set_sources(EPIC_IRQ_BASE, 3, OpenPIC_Addr + 0x11020);
+ /* Skip reserved space and map Message Unit Interrupt (I2O) */
+ openpic_set_sources(EPIC_IRQ_BASE + 3, 1, OpenPIC_Addr + 0x110C0);
+ /* Skip reserved space and map Serial Interupts */
+ openpic_set_sources(EPIC_IRQ_BASE + 4, 2, OpenPIC_Addr + 0x11120);
+
+ openpic_init(NUM_8259_INTERRUPTS);
+}
+#endif
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