2 * MPC86xx HPCN board specific routines
4 * Recode: ZHANG WEI <wei.zhang@freescale.com>
5 * Initial author: Xianghua Xiao <x.xiao@freescale.com>
7 * Copyright 2006 Freescale Semiconductor Inc.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
15 #include <linux/stddef.h>
16 #include <linux/kernel.h>
17 #include <linux/pci.h>
18 #include <linux/kdev_t.h>
19 #include <linux/delay.h>
20 #include <linux/seq_file.h>
22 #include <asm/system.h>
24 #include <asm/machdep.h>
25 #include <asm/pci-bridge.h>
26 #include <asm/mpc86xx.h>
28 #include <mm/mmu_decl.h>
30 #include <asm/i8259.h>
34 #include <sysdev/fsl_soc.h>
37 #include "mpc8641_hpcn.h"
42 #define DBG(fmt...) do { printk(KERN_ERR fmt); } while(0)
44 #define DBG(fmt...) do { } while(0)
48 static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
50 unsigned int cascade_irq = i8259_irq();
51 if (cascade_irq != NO_IRQ)
52 generic_handle_irq(cascade_irq);
55 #endif /* CONFIG_PCI */
58 mpc86xx_hpcn_init_irq(void)
61 struct device_node *np;
64 struct device_node *cascade_node = NULL;
68 /* Determine PIC address. */
69 np = of_find_node_by_type(NULL, "open-pic");
72 of_address_to_resource(np, 0, &res);
74 /* Alloc mpic structure and per isu has 16 INT entries. */
75 mpic1 = mpic_alloc(np, res.start,
76 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
78 BUG_ON(mpic1 == NULL);
83 /* Initialize i8259 controller */
84 for_each_node_by_type(np, "interrupt-controller")
85 if (of_device_is_compatible(np, "chrp,iic")) {
89 if (cascade_node == NULL) {
90 printk(KERN_DEBUG "mpc86xxhpcn: no ISA interrupt controller\n");
94 cascade_irq = irq_of_parse_and_map(cascade_node, 0);
95 if (cascade_irq == NO_IRQ) {
96 printk(KERN_ERR "mpc86xxhpcn: failed to map cascade interrupt");
99 DBG("mpc86xxhpcn: cascade mapped to irq %d\n", cascade_irq);
101 i8259_init(cascade_node, 0);
102 of_node_put(cascade_node);
104 set_irq_chained_handler(cascade_irq, mpc86xx_8259_cascade);
110 enum pirq{PIRQA = 8, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH};
111 const unsigned char uli1575_irq_route_table[16] = {
122 0x3, /* 10: 0b0011 */
123 0x9, /* 11: 0b1001 */
124 0xb, /* 12: 0b1011 */
125 0, /* 13: Reserved */
126 0xd, /* 14, 0b1101 */
127 0xf, /* 15, 0b1111 */
131 get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
135 struct device_node *hosenode = hose ? hose->arch_data : NULL;
137 if (!hosenode) return -EINVAL;
139 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
140 laddr[1] = laddr[2] = 0;
141 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
142 DBG("mpc86xx_hpcn: pci irq addr %x, slot %d, pin %d, irq %d\n",
143 laddr[0], slot, pin, oirq.specifier[0]);
144 return oirq.specifier[0];
147 static void __devinit quirk_uli1575(struct pci_dev *dev)
150 struct pci_controller *hose = pci_bus_to_host(dev->bus);
151 unsigned char irq2pin[16], c;
152 unsigned long pirq_map_word = 0;
157 * ULI1575 interrupts route setup
159 memset(irq2pin, 0, 16); /* Initialize default value 0 */
162 * PIRQA -> PIRQD mapping read from OF-tree
164 * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
165 * PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
167 for (i = 0; i < 4; i++){
168 irq = get_pci_irq_from_of(hose, 17, i + 1);
169 if (irq > 0 && irq < 16)
170 irq2pin[irq] = PIRQA + i;
172 printk(KERN_WARNING "ULI1575 device"
173 "(slot %d, pin %d) irq %d is invalid.\n",
178 * PIRQE -> PIRQF mapping set manually
186 for (i = 0; i < 4; i++) irq2pin[i + 9] = PIRQE + i;
188 /* Set IRQ-PIRQ Mapping to ULI1575 */
189 for (i = 0; i < 16; i++)
191 pirq_map_word |= (uli1575_irq_route_table[i] & 0xf)
192 << ((irq2pin[i] - PIRQA) * 4);
194 /* ULI1575 IRQ mapping conf register default value is 0xb9317542 */
195 DBG("Setup ULI1575 IRQ mapping configuration register value = 0x%x\n",
197 pci_write_config_dword(dev, 0x48, pirq_map_word);
199 #define ULI1575_SET_DEV_IRQ(slot, pin, reg) \
202 irq = get_pci_irq_from_of(hose, slot, pin); \
203 if (irq > 0 && irq < 16) \
204 pci_write_config_byte(dev, reg, irq2pin[irq]); \
206 printk(KERN_WARNING "ULI1575 device" \
207 "(slot %d, pin %d) irq %d is invalid.\n", \
211 /* USB 1.1 OHCI controller 1, slot 28, pin 1 */
212 ULI1575_SET_DEV_IRQ(28, 1, 0x86);
214 /* USB 1.1 OHCI controller 2, slot 28, pin 2 */
215 ULI1575_SET_DEV_IRQ(28, 2, 0x87);
217 /* USB 1.1 OHCI controller 3, slot 28, pin 3 */
218 ULI1575_SET_DEV_IRQ(28, 3, 0x88);
220 /* USB 2.0 controller, slot 28, pin 4 */
221 irq = get_pci_irq_from_of(hose, 28, 4);
222 if (irq >= 0 && irq <=15)
223 pci_write_config_dword(dev, 0x74, uli1575_irq_route_table[irq]);
225 /* Audio controller, slot 29, pin 1 */
226 ULI1575_SET_DEV_IRQ(29, 1, 0x8a);
228 /* Modem controller, slot 29, pin 2 */
229 ULI1575_SET_DEV_IRQ(29, 2, 0x8b);
231 /* HD audio controller, slot 29, pin 3 */
232 ULI1575_SET_DEV_IRQ(29, 3, 0x8c);
234 /* SMB interrupt: slot 30, pin 1 */
235 ULI1575_SET_DEV_IRQ(30, 1, 0x8e);
237 /* PMU ACPI SCI interrupt: slot 30, pin 2 */
238 ULI1575_SET_DEV_IRQ(30, 2, 0x8f);
240 /* Serial ATA interrupt: slot 31, pin 1 */
241 ULI1575_SET_DEV_IRQ(31, 1, 0x8d);
243 /* Primary PATA IDE IRQ: 14
244 * Secondary PATA IDE IRQ: 15
246 pci_write_config_byte(dev, 0x44, 0x30 | uli1575_irq_route_table[14]);
247 pci_write_config_byte(dev, 0x75, uli1575_irq_route_table[15]);
249 /* Set IRQ14 and IRQ15 to legacy IRQs */
250 pci_read_config_word(dev, 0x46, &temp);
252 pci_write_config_word(dev, 0x46, temp);
254 /* Set i8259 interrupt trigger
270 #undef ULI1575_SET_DEV_IRQ
272 /* Disable the HD interface and enable the AC97 interface. */
273 pci_read_config_byte(dev, 0xb8, &c);
275 pci_write_config_byte(dev, 0xb8, c);
278 static void __devinit quirk_uli5288(struct pci_dev *dev)
282 pci_read_config_byte(dev,0x83,&c);
284 pci_write_config_byte(dev, 0x83, c);
286 pci_write_config_byte(dev, 0x09, 0x01);
287 pci_write_config_byte(dev, 0x0a, 0x06);
289 pci_read_config_byte(dev,0x83,&c);
291 pci_write_config_byte(dev, 0x83, c);
293 pci_read_config_byte(dev,0x84,&c);
295 pci_write_config_byte(dev, 0x84, c);
298 static void __devinit quirk_uli5229(struct pci_dev *dev)
301 pci_write_config_word(dev, 0x04, 0x0405);
303 pci_read_config_word(dev, 0x4a, &temp);
305 pci_write_config_word(dev, 0x4a, temp);
308 static void __devinit early_uli5249(struct pci_dev *dev)
311 pci_write_config_word(dev, 0x04, 0x0007);
312 pci_read_config_byte(dev, 0x7c, &temp);
313 pci_write_config_byte(dev, 0x7c, 0x80);
314 pci_write_config_byte(dev, 0x09, 0x01);
315 pci_write_config_byte(dev, 0x7c, temp);
319 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
320 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
321 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
322 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
323 #endif /* CONFIG_PCI */
327 mpc86xx_hpcn_setup_arch(void)
329 struct device_node *np;
332 ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
334 np = of_find_node_by_type(NULL, "cpu");
336 const unsigned int *fp;
338 fp = of_get_property(np, "clock-frequency", NULL);
340 loops_per_jiffy = *fp / HZ;
342 loops_per_jiffy = 50000000 / HZ;
347 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
348 mpc86xx_add_bridge(np);
351 printk("MPC86xx HPCN board from Freescale Semiconductor\n");
360 mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
362 struct device_node *root;
363 uint memsize = total_memory;
364 const char *model = "";
365 uint svid = mfspr(SPRN_SVR);
367 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
369 root = of_find_node_by_path("/");
371 model = of_get_property(root, "model", NULL);
372 seq_printf(m, "Machine\t\t: %s\n", model);
375 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
376 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
381 * Called very early, device-tree isn't unflattened
383 static int __init mpc86xx_hpcn_probe(void)
385 unsigned long root = of_get_flat_dt_root();
387 if (of_flat_dt_is_compatible(root, "mpc86xx"))
388 return 1; /* Looks good */
395 mpc86xx_restart(char *cmd)
399 rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
403 /* Assert reset request to Reset Control Register */
404 out_be32(rstcr, 0x2);
411 mpc86xx_time_init(void)
415 /* Set the time base to zero */
419 temp = mfspr(SPRN_HID0);
421 mtspr(SPRN_HID0, temp);
422 asm volatile("isync");
428 define_machine(mpc86xx_hpcn) {
429 .name = "MPC86xx HPCN",
430 .probe = mpc86xx_hpcn_probe,
431 .setup_arch = mpc86xx_hpcn_setup_arch,
432 .init_IRQ = mpc86xx_hpcn_init_irq,
433 .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
434 .get_irq = mpic_get_irq,
435 .restart = mpc86xx_restart,
436 .time_init = mpc86xx_time_init,
437 .calibrate_decr = generic_calibrate_decr,
438 .progress = udbg_progress,