@ -1,6 +1,6 @@
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -55,6 +55,7 @@ obj-$(CONFIG_ZAO_CAPCELLA) += fixup-capc
@@ -55,6 +55,7 @@
obj-$(CONFIG_WR_PPMC) += fixup-wrppmc.o
obj-$(CONFIG_MIKROTIK_RB532) += pci-rc32434.o ops-rc32434.o fixup-rc32434.o
obj-$(CONFIG_CPU_CAVIUM_OCTEON) += pci-octeon.o pcie-octeon.o
@ -140,7 +140,7 @@
+}
--- /dev/null
+++ b/arch/mips/pci/pci-lantiq.c
@@ -0,0 +1, 29 3 @@
@@ -0,0 +1, 305 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
@ -181,19 +181,19 @@
+#define PCI_CR_FCI_ADDR_MAP6 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00D8))
+#define PCI_CR_FCI_ADDR_MAP7 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00DC))
+#define PCI_CR_CLK_CTRL ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0000))
+#define PCI_CR_PCI_IRM ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0028))
+#define PCI_CR_PCI_MOD ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0030))
+#define PCI_CR_PC_ARB ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0080))
+#define PCI_CR_FCI_ADDR_MAP11hg ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00E4))
+#define PCI_CR_BAR11MASK ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0044))
+#define PCI_CR_BAR12MASK ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0048))
+#define PCI_CR_BAR13MASK ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x004C))
+#define PCI_CS_BASE_ADDR1 ((u32 *)(PCI_CS_PR_BASE_ADDR + 0x0010))
+#define PCI_CR_PCI_ADDR_MAP11 ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x0064))
+#define PCI_CR_FCI_BURST_LENGTH ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x00E8))
+#define PCI_CR_PCI_EOI ((u32 *)(PCI_CR_PR_BASE_ADDR + 0x002C))
+
+
+#define PCI_CS_STS_CMD ((u32 *)(PCI_CS_PR_BASE_ADDR + 0x0004))
+#define PCI_CS_BASE_ADDR1 ((u32 *)(PCI_CS_PR_BASE_ADDR + 0x0010))
+
+#define PCI_MASTER0_REQ_MASK_2BITS 8
+#define PCI_MASTER1_REQ_MASK_2BITS 10
@ -210,10 +210,14 @@
+
+u32 lq_pci_mapped_cfg;
+
+int (*lqpci_plat_dev_init)(struct pci_dev *dev) = NULL;
+
+/* Since the PCI REQ pins can be reused for other functionality, make it possible
+ to exclude those from interpretation by the PCI controller */
+static int lq_pci_req_mask = 0xf;
+
+static int *lq_pci_irq_map;
+
+struct pci_ops lq_pci_ops =
+{
+ .read = lq_pci_read_config_dword,
@ -248,26 +252,9 @@
+int
+pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ u8 pin;
+ if (lqpci_plat_dev_init)
+ return lqpci_plat_dev_init(dev);
+
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ switch(pin)
+ {
+ case 0:
+ break;
+ case 1:
+ //falling edge level triggered:0x4, low level:0xc, rising edge:0x2
+ lq_w32(lq_r32(LQ_EBU_PCC_CON) | 0xc, LQ_EBU_PCC_CON);
+ lq_w32(lq_r32(LQ_EBU_PCC_IEN) | 0x10, LQ_EBU_PCC_IEN);
+ break;
+ case 2:
+ case 3:
+ case 4:
+ printk ("WARNING: interrupt pin %d not supported yet!\n", pin);
+ default:
+ printk ("WARNING: invalid interrupt pin %d\n", pin);
+ return 1;
+ }
+ return 0;
+}
+
@ -283,13 +270,63 @@
+ return bar11mask;
+}
+
+struct ltq_pci_gpio_map {
+ int pin;
+ int alt0;
+ int alt1;
+ int dir;
+ char *name;
+};
+
+static struct ltq_pci_gpio_map gmap[] = {
+ { 0, 1, 0, 0, "pci-exin0" },
+ { 1, 1, 0, 0, "pci-exin1" },
+ { 2, 1, 0, 0, "pci-exin2" },
+ { 30, 1, 0, 1, "pci-gnt1" },
+ { 23, 1, 0, 1, "pci-gnt2" },
+ { 19, 1, 0, 1, "pci-gnt3" },
+ { 29, 1, 0, 0, "pci-req1" },
+ { 31, 1, 0, 0, "pci-req2" },
+ { 3, 1, 0, 0, "pci-req3" },
+};
+
+static void
+lq_pci_setup_clk(int external_clock)
+lq_pci_setup_gpio(int gpio)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(gmap); i++)
+ {
+ if(gpio & (1 << i))
+ {
+ lq_gpio_request(gmap[i].pin, gmap[i].alt0,
+ gmap[i].alt1, gmap[i].dir, gmap[i].name);
+ }
+ }
+ lq_w32(lq_r32((u32*)0xBF101000) | 0x60, (u32*)0xBF101000);
+ lq_w32(lq_r32((u32*)0xBF101004) & ~2, (u32*)0xBF101004);
+ lq_w32(lq_r32((u32*)0xBF10100C) | 2, (u32*)0xBF10100C);
+ for(i = 0; i < 3; i++)
+ {
+ if(gpio & (1 << i))
+ {
+ lq_w32(lq_r32((u32*)0xBF101000) | (0x6 << (i * 4)), (u32*)0xBF101000);
+ lq_w32(lq_r32((u32*)0xBF101004) & ~(1 << i), (u32*)0xBF101004);
+ lq_w32(lq_r32((u32*)0xBF10100C) | (1 << i), (u32*)0xBF10100C);
+ }
+ }
+ lq_gpio_request(21, 0, 0, 1, "pci-reset");
+ lq_pci_req_mask = (gpio >> PCI_REQ_SHIFT) & 0x7;
+}
+
+static int __init
+lq_pci_startup(struct lq_pci_data *conf)
+{
+ u32 temp_buffer;
+
+ /* set clock to 33Mhz */
+ lq_w32(lq_r32(LQ_CGU_IFCCR) & ~0xf00000, LQ_CGU_IFCCR);
+ lq_w32(lq_r32(LQ_CGU_IFCCR) | 0x800000, LQ_CGU_IFCCR);
+ if (external_clock)
+ if ( conf->clock == PCI_CLOCK_EXT )
+ {
+ lq_w32(lq_r32(LQ_CGU_IFCCR) & ~(1 << 16), LQ_CGU_IFCCR);
+ lq_w32((1 << 30), LQ_CGU_PCICR);
@ -297,28 +334,9 @@
+ lq_w32(lq_r32(LQ_CGU_IFCCR) | (1 << 16), LQ_CGU_IFCCR);
+ lq_w32((1 << 31) | (1 << 30), LQ_CGU_PCICR);
+ }
+}
+
+static void
+lq_pci_setup_gpio(void)
+{
+ /* PCI reset line is gpio driven */
+ lq_gpio_request(21, 0, 0, 1, "pci-reset");
+
+ /* PCI_REQ line */
+ lq_gpio_request(29, 1, 0, 0, "pci-req");
+
+ /* PCI_GNT line */
+ lq_gpio_request(30, 1, 0, 1, "pci-gnt");
+}
+
+static int __init
+lq_pci_startup(void)
+{
+ u32 temp_buffer;
+
+ /* setup pci clock and gpis used by pci */
+ lq_pci_setup_gpio( );
+ lq_pci_setup_gpio(conf->gpio);
+
+ /* enable auto-switching between PCI and EBU */
+ lq_w32(0xa, PCI_CR_CLK_CTRL);
@ -331,7 +349,8 @@
+
+ /* enable external 2 PCI masters */
+ temp_buffer = lq_r32(PCI_CR_PC_ARB);
+ temp_buffer &= (~(lq_pci_req_mask << 16));
+ temp_buffer &= (~((lq_pci_req_mask & 0xf) << 16));
+
+ /* enable internal arbiter */
+ temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
+ /* enable internal PCI master reqest */
@ -355,22 +374,28 @@
+ lq_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6);
+ lq_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7);
+ lq_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg);
+
+ lq_w32(lq_calc_bar11mask(), PCI_CR_BAR11MASK);
+ lq_w32(0, PCI_CR_PCI_ADDR_MAP11);
+ lq_w32(0, PCI_CS_BASE_ADDR1);
+ #ifdef CONFIG_SWAP_IO_SPACE
+
+ /* both TX and RX endian swap are enabled */
+ lq_w32(lq_r32(PCI_CR_PCI_EOI) | 3, PCI_CR_PCI_EOI);
+ wmb ();
+ #endif
+
+ /*TODO: disable BAR2 & BAR3 - why was this in the origianl infineon code */
+ lq_w32(lq_r32(PCI_CR_BAR12MASK) | 0x80000000, PCI_CR_BAR12MASK);
+ lq_w32(lq_r32(PCI_CR_BAR13MASK) | 0x80000000, PCI_CR_BAR13MASK);
+ /*use 8 dw burst length */
+
+ /* use 8 dw burst length */
+ lq_w32(0x303, PCI_CR_FCI_BURST_LENGTH);
+ lq_w32(lq_r32(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD);
+ wmb();
+
+ /* setup irq line */
+ lq_w32(lq_r32(LQ_EBU_PCC_CON) | 0xc, LQ_EBU_PCC_CON);
+ lq_w32(lq_r32(LQ_EBU_PCC_IEN) | 0x10, LQ_EBU_PCC_IEN);
+
+ /* toggle reset pin */
+ __gpio_set_value(21, 0);
+ wmb();
@ -381,18 +406,10 @@
+
+int __init
+pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin){
+ switch(slot)
+ {
+ case 13:
+ /* IDSEL = AD29 --> USB Host Controller */
+ return (INT_NUM_IM1_IRL0 + 17);
+ case 14:
+ /* IDSEL = AD30 --> mini PCI connector */
+ return (INT_NUM_IM0_IRL0 + 22);
+ default:
+ printk("lq_pci: no IRQ found for slot %d, pin %d\n", slot, pin);
+ return 0;
+ }
+ if(lq_pci_irq_map[slot])
+ return lq_pci_irq_map[slot];
+ printk("lq_pci: trying to map irq for unknown slot %d\n", slot);
+ return 0;
+}
+
+static int
@ -400,17 +417,12 @@
+{
+ struct lq_pci_data *lq_pci_data = (struct lq_pci_data*) pdev->dev.platform_data;
+ extern int pci_probe_only;
+
+ pci_probe_only = 0;
+ lq_pci_req_mask = lq_pci_data->req_mask;
+ lq_pci_setup_clk(lq_pci_data->clock);
+
+ lq_pci_startup();
+ lq_pci_mapped_cfg =
+ (u32)ioremap_nocache(LQ_PCI_CFG_BASE, LQ_PCI_CFG_BASE);
+ lq_pci_controller.io_map_base =
+ (unsigned long)ioremap(LQ_PCI_IO_BASE, LQ_PCI_IO_SIZE - 1);
+
+ lq_pci_irq_map = lq_pci_data->irq;
+ lq_pci_startup(lq_pci_data);
+ lq_pci_mapped_cfg =
+ (u32)ioremap_nocache(LQ_PCI_CFG_BASE, LQ_PCI_CFG_SIZE);
+ lq_pci_controller.io_map_base = mips_io_port_base + LQ_PCI_IO_BASE;
+ register_pci_controller(&lq_pci_controller);
+ return 0;
+}
John Crispin
14 years ago