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>
41 mpc86xx_hpcd_init_irq(void)
44 struct device_node *np;
47 /* Determine PIC address. */
48 np = of_find_node_by_type(NULL, "open-pic");
51 of_address_to_resource(np, 0, &res);
53 /* Alloc mpic structure and per isu has 16 INT entries. */
54 mpic1 = mpic_alloc(np, res.start,
55 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
57 BUG_ON(mpic1 == NULL);
63 static void __devinit quirk_uli1575(struct pci_dev *dev)
68 pci_read_config_dword(dev, 0x48, &temp32);
69 pci_write_config_dword(dev, 0x48, (temp32 | 1<<26));
71 /* Enable sideband interrupt */
72 pci_read_config_dword(dev, 0x90, &temp32);
73 pci_write_config_dword(dev, 0x90, (temp32 | 1<<22));
76 static void __devinit quirk_uli5288(struct pci_dev *dev)
81 /* Interrupt Disable, Needed when SATA disabled */
82 pci_read_config_word(dev, PCI_COMMAND, &temp);
84 pci_write_config_word(dev, PCI_COMMAND, temp);
86 pci_read_config_byte(dev, 0x83, &c);
88 pci_write_config_byte(dev, 0x83, c);
90 pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01);
91 pci_write_config_byte(dev, PCI_CLASS_DEVICE, 0x06);
93 pci_read_config_byte(dev, 0x83, &c);
95 pci_write_config_byte(dev, 0x83, c);
99 * Since 8259PIC was disabled on the board, the IDE device can not
100 * use the legacy IRQ, we need to let the IDE device work under
101 * native mode and use the interrupt line like other PCI devices.
102 * IRQ14 is a sideband interrupt from IDE device to CPU and we use this
103 * as the interrupt for IDE device.
105 static void __devinit quirk_uli5229(struct pci_dev *dev)
109 pci_read_config_byte(dev, 0x4b, &c);
111 pci_write_config_byte(dev, 0x4b, c);
115 * SATA interrupt pin bug fix
116 * There's a chip bug for 5288, The interrupt pin should be 2,
117 * not the read only value 1, So it use INTB#, not INTA# which
118 * actually used by the IDE device 5229.
119 * As of this bug, during the PCI initialization, 5288 read the
120 * irq of IDE device from the device tree, this function fix this
121 * bug by re-assigning a correct irq to 5288.
124 static void __devinit final_uli5288(struct pci_dev *dev)
126 struct pci_controller *hose = pci_bus_to_host(dev->bus);
127 struct device_node *hosenode = hose ? hose->arch_data : NULL;
135 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8);
136 laddr[1] = laddr[2] = 0;
137 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
138 virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
143 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
144 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
145 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
146 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5288, final_uli5288);
147 #endif /* CONFIG_PCI */
150 mpc86xx_hpcd_setup_arch(void)
153 struct device_node *np;
156 ppc_md.progress("mpc86xx_hpcd_setup_arch()", 0);
159 for_each_node_by_type(np, "pci") {
160 if (of_device_is_compatible(np, "fsl,mpc8610-pci")
161 || of_device_is_compatible(np, "fsl,mpc8641-pcie")) {
162 struct resource rsrc;
163 of_address_to_resource(np, 0, &rsrc);
164 if ((rsrc.start & 0xfffff) == 0xa000)
165 fsl_add_bridge(np, 1);
167 fsl_add_bridge(np, 0);
172 printk("MPC86xx HPCD board from Freescale Semiconductor\n");
176 * Called very early, device-tree isn't unflattened
178 static int __init mpc86xx_hpcd_probe(void)
180 unsigned long root = of_get_flat_dt_root();
182 if (of_flat_dt_is_compatible(root, "fsl,MPC8610HPCD"))
183 return 1; /* Looks good */
189 mpc86xx_time_init(void)
193 /* Set the time base to zero */
197 temp = mfspr(SPRN_HID0);
199 mtspr(SPRN_HID0, temp);
200 asm volatile("isync");
205 define_machine(mpc86xx_hpcd) {
206 .name = "MPC86xx HPCD",
207 .probe = mpc86xx_hpcd_probe,
208 .setup_arch = mpc86xx_hpcd_setup_arch,
209 .init_IRQ = mpc86xx_hpcd_init_irq,
210 .get_irq = mpic_get_irq,
211 .restart = fsl_rstcr_restart,
212 .time_init = mpc86xx_time_init,
213 .calibrate_decr = generic_calibrate_decr,
214 .progress = udbg_progress,
215 .pcibios_fixup_bus = fsl_pcibios_fixup_bus,