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 unsigned long isa_io_base = 0;
49 unsigned long isa_mem_base = 0;
50 unsigned long pci_dram_offset = 0;
55 static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
57 unsigned int cascade_irq = i8259_irq();
58 if (cascade_irq != NO_IRQ)
59 generic_handle_irq(cascade_irq);
62 #endif /* CONFIG_PCI */
65 mpc86xx_hpcn_init_irq(void)
68 struct device_node *np;
71 struct device_node *cascade_node = NULL;
75 /* Determine PIC address. */
76 np = of_find_node_by_type(NULL, "open-pic");
79 of_address_to_resource(np, 0, &res);
81 /* Alloc mpic structure and per isu has 16 INT entries. */
82 mpic1 = mpic_alloc(np, res.start,
83 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
86 BUG_ON(mpic1 == NULL);
88 mpic_assign_isu(mpic1, 0, res.start + 0x10000);
90 /* 48 Internal Interrupts */
91 mpic_assign_isu(mpic1, 1, res.start + 0x10200);
92 mpic_assign_isu(mpic1, 2, res.start + 0x10400);
93 mpic_assign_isu(mpic1, 3, res.start + 0x10600);
95 /* 16 External interrupts
96 * Moving them from [0 - 15] to [64 - 79]
98 mpic_assign_isu(mpic1, 4, res.start + 0x10000);
103 /* Initialize i8259 controller */
104 for_each_node_by_type(np, "interrupt-controller")
105 if (device_is_compatible(np, "chrp,iic")) {
109 if (cascade_node == NULL) {
110 printk(KERN_DEBUG "mpc86xxhpcn: no ISA interrupt controller\n");
114 cascade_irq = irq_of_parse_and_map(cascade_node, 0);
115 if (cascade_irq == NO_IRQ) {
116 printk(KERN_ERR "mpc86xxhpcn: failed to map cascade interrupt");
119 DBG("mpc86xxhpcn: cascade mapped to irq %d\n", cascade_irq);
121 i8259_init(cascade_node, 0);
122 of_node_put(cascade_node);
124 set_irq_chained_handler(cascade_irq, mpc86xx_8259_cascade);
130 enum pirq{PIRQA = 8, PIRQB, PIRQC, PIRQD, PIRQE, PIRQF, PIRQG, PIRQH};
131 const unsigned char uli1575_irq_route_table[16] = {
142 0x3, /* 10: 0b0011 */
143 0x9, /* 11: 0b1001 */
144 0xb, /* 12: 0b1011 */
145 0, /* 13: Reserved */
146 0xd, /* 14, 0b1101 */
147 0xf, /* 15, 0b1111 */
151 get_pci_irq_from_of(struct pci_controller *hose, int slot, int pin)
155 struct device_node *hosenode = hose ? hose->arch_data : NULL;
157 if (!hosenode) return -EINVAL;
159 laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(slot, 0) << 8);
160 laddr[1] = laddr[2] = 0;
161 of_irq_map_raw(hosenode, &pin, 1, laddr, &oirq);
162 DBG("mpc86xx_hpcn: pci irq addr %x, slot %d, pin %d, irq %d\n",
163 laddr[0], slot, pin, oirq.specifier[0]);
164 return oirq.specifier[0];
167 static void __devinit quirk_uli1575(struct pci_dev *dev)
170 struct pci_controller *hose = pci_bus_to_host(dev->bus);
171 unsigned char irq2pin[16];
172 unsigned long pirq_map_word = 0;
177 * ULI1575 interrupts route setup
179 memset(irq2pin, 0, 16); /* Initialize default value 0 */
182 * PIRQA -> PIRQD mapping read from OF-tree
184 * interrupts for PCI slot0 -- PIRQA / PIRQB / PIRQC / PIRQD
185 * PCI slot1 -- PIRQB / PIRQC / PIRQD / PIRQA
187 for (i = 0; i < 4; i++){
188 irq = get_pci_irq_from_of(hose, 17, i + 1);
189 if (irq > 0 && irq < 16)
190 irq2pin[irq] = PIRQA + i;
192 printk(KERN_WARNING "ULI1575 device"
193 "(slot %d, pin %d) irq %d is invalid.\n",
198 * PIRQE -> PIRQF mapping set manually
206 for (i = 0; i < 4; i++) irq2pin[i + 9] = PIRQE + i;
208 /* Set IRQ-PIRQ Mapping to ULI1575 */
209 for (i = 0; i < 16; i++)
211 pirq_map_word |= (uli1575_irq_route_table[i] & 0xf)
212 << ((irq2pin[i] - PIRQA) * 4);
214 /* ULI1575 IRQ mapping conf register default value is 0xb9317542 */
215 DBG("Setup ULI1575 IRQ mapping configuration register value = 0x%x\n",
217 pci_write_config_dword(dev, 0x48, pirq_map_word);
219 #define ULI1575_SET_DEV_IRQ(slot, pin, reg) \
222 irq = get_pci_irq_from_of(hose, slot, pin); \
223 if (irq > 0 && irq < 16) \
224 pci_write_config_byte(dev, reg, irq2pin[irq]); \
226 printk(KERN_WARNING "ULI1575 device" \
227 "(slot %d, pin %d) irq %d is invalid.\n", \
231 /* USB 1.1 OHCI controller 1, slot 28, pin 1 */
232 ULI1575_SET_DEV_IRQ(28, 1, 0x86);
234 /* USB 1.1 OHCI controller 2, slot 28, pin 2 */
235 ULI1575_SET_DEV_IRQ(28, 2, 0x87);
237 /* USB 1.1 OHCI controller 3, slot 28, pin 3 */
238 ULI1575_SET_DEV_IRQ(28, 3, 0x88);
240 /* USB 2.0 controller, slot 28, pin 4 */
241 irq = get_pci_irq_from_of(hose, 28, 4);
242 if (irq >= 0 && irq <=15)
243 pci_write_config_dword(dev, 0x74, uli1575_irq_route_table[irq]);
245 /* Audio controller, slot 29, pin 1 */
246 ULI1575_SET_DEV_IRQ(29, 1, 0x8a);
248 /* Modem controller, slot 29, pin 2 */
249 ULI1575_SET_DEV_IRQ(29, 2, 0x8b);
251 /* HD audio controller, slot 29, pin 3 */
252 ULI1575_SET_DEV_IRQ(29, 3, 0x8c);
254 /* SMB interrupt: slot 30, pin 1 */
255 ULI1575_SET_DEV_IRQ(30, 1, 0x8e);
257 /* PMU ACPI SCI interrupt: slot 30, pin 2 */
258 ULI1575_SET_DEV_IRQ(30, 2, 0x8f);
260 /* Serial ATA interrupt: slot 31, pin 1 */
261 ULI1575_SET_DEV_IRQ(31, 1, 0x8d);
263 /* Primary PATA IDE IRQ: 14
264 * Secondary PATA IDE IRQ: 15
266 pci_write_config_byte(dev, 0x44, 0x30 | uli1575_irq_route_table[14]);
267 pci_write_config_byte(dev, 0x75, uli1575_irq_route_table[15]);
269 /* Set IRQ14 and IRQ15 to legacy IRQs */
270 pci_read_config_word(dev, 0x46, &temp);
272 pci_write_config_word(dev, 0x46, temp);
274 /* Set i8259 interrupt trigger
290 #undef ULI1575_SET_DEV_IRQ
293 static void __devinit quirk_uli5288(struct pci_dev *dev)
297 pci_read_config_byte(dev,0x83,&c);
299 pci_write_config_byte(dev, 0x83, c);
301 pci_write_config_byte(dev, 0x09, 0x01);
302 pci_write_config_byte(dev, 0x0a, 0x06);
304 pci_read_config_byte(dev,0x83,&c);
306 pci_write_config_byte(dev, 0x83, c);
308 pci_read_config_byte(dev,0x84,&c);
310 pci_write_config_byte(dev, 0x84, c);
313 static void __devinit quirk_uli5229(struct pci_dev *dev)
316 pci_write_config_word(dev, 0x04, 0x0405);
317 pci_read_config_word(dev, 0x4a, &temp);
319 pci_write_config_word(dev, 0x4a, temp);
322 static void __devinit early_uli5249(struct pci_dev *dev)
325 pci_write_config_word(dev, 0x04, 0x0007);
326 pci_read_config_byte(dev, 0x7c, &temp);
327 pci_write_config_byte(dev, 0x7c, 0x80);
328 pci_write_config_byte(dev, 0x09, 0x01);
329 pci_write_config_byte(dev, 0x7c, temp);
333 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
334 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
335 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
336 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
337 #endif /* CONFIG_PCI */
341 mpc86xx_hpcn_setup_arch(void)
343 struct device_node *np;
346 ppc_md.progress("mpc86xx_hpcn_setup_arch()", 0);
348 np = of_find_node_by_type(NULL, "cpu");
350 const unsigned int *fp;
352 fp = get_property(np, "clock-frequency", NULL);
354 loops_per_jiffy = *fp / HZ;
356 loops_per_jiffy = 50000000 / HZ;
361 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
364 ppc_md.pci_exclude_device = mpc86xx_exclude_device;
367 printk("MPC86xx HPCN board from Freescale Semiconductor\n");
376 mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
378 struct device_node *root;
379 uint memsize = total_memory;
380 const char *model = "";
381 uint svid = mfspr(SPRN_SVR);
383 seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
385 root = of_find_node_by_path("/");
387 model = get_property(root, "model", NULL);
388 seq_printf(m, "Machine\t\t: %s\n", model);
391 seq_printf(m, "SVR\t\t: 0x%x\n", svid);
392 seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
397 * Called very early, device-tree isn't unflattened
399 static int __init mpc86xx_hpcn_probe(void)
401 unsigned long root = of_get_flat_dt_root();
403 if (of_flat_dt_is_compatible(root, "mpc86xx"))
404 return 1; /* Looks good */
411 mpc86xx_restart(char *cmd)
415 rstcr = ioremap(get_immrbase() + MPC86XX_RSTCR_OFFSET, 0x100);
419 /* Assert reset request to Reset Control Register */
420 out_be32(rstcr, 0x2);
427 mpc86xx_time_init(void)
431 /* Set the time base to zero */
435 temp = mfspr(SPRN_HID0);
437 mtspr(SPRN_HID0, temp);
438 asm volatile("isync");
444 define_machine(mpc86xx_hpcn) {
445 .name = "MPC86xx HPCN",
446 .probe = mpc86xx_hpcn_probe,
447 .setup_arch = mpc86xx_hpcn_setup_arch,
448 .init_IRQ = mpc86xx_hpcn_init_irq,
449 .show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
450 .get_irq = mpic_get_irq,
451 .restart = mpc86xx_restart,
452 .time_init = mpc86xx_time_init,
453 .calibrate_decr = generic_calibrate_decr,
454 .progress = udbg_progress,