2 * MPC8610 HPCD board specific routines
4 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
5 * Recode: Jason Jin <jason.jin@freescale.com>
7 * Rewrite the interrupt routing. remove the 8259PIC support,
8 * All the integrated device in ULI use sideband interrupt.
10 * Copyright 2007 Freescale Semiconductor Inc.
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
18 #include <linux/stddef.h>
19 #include <linux/kernel.h>
20 #include <linux/pci.h>
21 #include <linux/kdev_t.h>
22 #include <linux/delay.h>
23 #include <linux/seq_file.h>
26 #include <asm/system.h>
28 #include <asm/machdep.h>
29 #include <asm/pci-bridge.h>
30 #include <asm/mpc86xx.h>
32 #include <mm/mmu_decl.h>
37 #include <sysdev/fsl_pci.h>
38 #include <sysdev/fsl_soc.h>
40 #define MPC86XX_RSTCR_OFFSET (0xe00b0) /* Reset Control Register */
43 mpc86xx_hpcd_init_irq(void)
46 struct device_node *np;
49 /* Determine PIC address. */
50 np = of_find_node_by_type(NULL, "open-pic");
53 of_address_to_resource(np, 0, &res);
55 /* Alloc mpic structure and per isu has 16 INT entries. */
56 mpic1 = mpic_alloc(np, res.start,
57 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
59 BUG_ON(mpic1 == NULL);
65 static void __devinit quirk_uli1575(struct pci_dev *dev)
70 pci_read_config_dword(dev, 0x48, &temp32);
71 pci_write_config_dword(dev, 0x48, (temp32 | 1<<26));
73 /* Enable sideband interrupt */
74 pci_read_config_dword(dev, 0x90, &temp32);
75 pci_write_config_dword(dev, 0x90, (temp32 | 1<<22));
78 static void __devinit quirk_uli5288(struct pci_dev *dev)
83 /* Interrupt Disable, Needed when SATA disabled */
84 pci_read_config_word(dev, PCI_COMMAND, &temp);
86 pci_write_config_word(dev, PCI_COMMAND, temp);
88 pci_read_config_byte(dev, 0x83, &c);
90 pci_write_config_byte(dev, 0x83, c);
92 pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01);
93 pci_write_config_byte(dev, PCI_CLASS_DEVICE, 0x06);
95 pci_read_config_byte(dev, 0x83, &c);
97 pci_write_config_byte(dev, 0x83, c);
101 * Since 8259PIC was disabled on the board, the IDE device can not
102 * use the legacy IRQ, we need to let the IDE device work under
103 * native mode and use the interrupt line like other PCI devices.
104 * IRQ14 is a sideband interrupt from IDE device to CPU and we use this
105 * as the interrupt for IDE device.
107 static void __devinit quirk_uli5229(struct pci_dev *dev)
111 pci_read_config_byte(dev, 0x4b, &c);
113 pci_write_config_byte(dev, 0x4b, c);
117 * SATA interrupt pin bug fix
118 * There's a chip bug for 5288, The interrupt pin should be 2,
119 * not the read only value 1, So it use INTB#, not INTA# which
120 * actually used by the IDE device 5229.
121 * As of this bug, during the PCI initialization, 5288 read the
122 * irq of IDE device from the device tree, this function fix this
123 * bug by re-assigning a correct irq to 5288.
126 static void __devinit final_uli5288(struct pci_dev *dev)
128 struct pci_controller *hose = pci_bus_to_host(dev->bus);
129 struct device_node *hosenode = hose ? hose->arch_data : NULL;
137 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8);
138 laddr[1] = laddr[2] = 0;
139 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
140 virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
145 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
146 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
147 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
148 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5288, final_uli5288);
149 #endif /* CONFIG_PCI */
152 mpc86xx_hpcd_setup_arch(void)
155 struct device_node *np;
158 ppc_md.progress("mpc86xx_hpcd_setup_arch()", 0);
161 for_each_node_by_type(np, "pci") {
162 if (of_device_is_compatible(np, "fsl,mpc8610-pci")
163 || of_device_is_compatible(np, "fsl,mpc8641-pcie")) {
164 struct resource rsrc;
165 of_address_to_resource(np, 0, &rsrc);
166 if ((rsrc.start & 0xfffff) == 0xa000)
167 fsl_add_bridge(np, 1);
169 fsl_add_bridge(np, 0);
174 printk("MPC86xx HPCD board from Freescale Semiconductor\n");
178 * Called very early, device-tree isn't unflattened
180 static int __init mpc86xx_hpcd_probe(void)
182 unsigned long root = of_get_flat_dt_root();
184 if (of_flat_dt_is_compatible(root, "fsl,MPC8610HPCD"))
185 return 1; /* Looks good */
191 mpc86xx_restart(char *cmd)
195 rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
199 /* Assert reset request to Reset Control Register */
200 out_be32(rstcr, 0x2);
206 mpc86xx_time_init(void)
210 /* Set the time base to zero */
214 temp = mfspr(SPRN_HID0);
216 mtspr(SPRN_HID0, temp);
217 asm volatile("isync");
222 define_machine(mpc86xx_hpcd) {
223 .name = "MPC86xx HPCD",
224 .probe = mpc86xx_hpcd_probe,
225 .setup_arch = mpc86xx_hpcd_setup_arch,
226 .init_IRQ = mpc86xx_hpcd_init_irq,
227 .get_irq = mpic_get_irq,
228 .restart = mpc86xx_restart,
229 .time_init = mpc86xx_time_init,
230 .calibrate_decr = generic_calibrate_decr,
231 .progress = udbg_progress,
232 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,