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   1 /*
   2  * ULI M1575 setup code - specific to Freescale boards
   3  *
   4  * Copyright 2007 Freescale Semiconductor Inc.
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #include <linux/stddef.h>
  13 #include <linux/kernel.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/mc146818rtc.h>
  17
  18 #include <asm/system.h>
  19 #include <asm/pci-bridge.h>
  20
  21 #define ULI_PIRQA       0x08
  22 #define ULI_PIRQB       0x09
  23 #define ULI_PIRQC       0x0a
  24 #define ULI_PIRQD       0x0b
  25 #define ULI_PIRQE       0x0c
  26 #define ULI_PIRQF       0x0d
  27 #define ULI_PIRQG       0x0e
  28
  29 #define ULI_8259_NONE   0x00
  30 #define ULI_8259_IRQ1   0x08
  31 #define ULI_8259_IRQ3   0x02
  32 #define ULI_8259_IRQ4   0x04
  33 #define ULI_8259_IRQ5   0x05
  34 #define ULI_8259_IRQ6   0x07
  35 #define ULI_8259_IRQ7   0x06
  36 #define ULI_8259_IRQ9   0x01
  37 #define ULI_8259_IRQ10  0x03
  38 #define ULI_8259_IRQ11  0x09
  39 #define ULI_8259_IRQ12  0x0b
  40 #define ULI_8259_IRQ14  0x0d
  41 #define ULI_8259_IRQ15  0x0f
  42
  43 u8 uli_pirq_to_irq[8] = {
  44         ULI_8259_IRQ9,          /* PIRQA */
  45         ULI_8259_IRQ10,         /* PIRQB */
  46         ULI_8259_IRQ11,         /* PIRQC */
  47         ULI_8259_IRQ12,         /* PIRQD */
  48         ULI_8259_IRQ5,          /* PIRQE */
  49         ULI_8259_IRQ6,          /* PIRQF */
  50         ULI_8259_IRQ7,          /* PIRQG */
  51         ULI_8259_NONE,          /* PIRQH */
  52 };
  53
  54 /* set in board code if you want this quirks to do something */
  55 int uses_fsl_uli_m1575;
  56
  57 /* Bridge */
  58 static void __devinit early_uli5249(struct pci_dev *dev)
  59 {
  60         unsigned char temp;
  61
  62         if (!uses_fsl_uli_m1575)
  63                 return;
  64
  65         pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_IO |
  66                  PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
  67
  68         /* read/write lock */
  69         pci_read_config_byte(dev, 0x7c, &temp);
  70         pci_write_config_byte(dev, 0x7c, 0x80);
  71
  72         /* set as P2P bridge */
  73         pci_write_config_byte(dev, PCI_CLASS_PROG, 0x01);
  74         dev->class |= 0x1;
  75
  76         /* restore lock */
  77         pci_write_config_byte(dev, 0x7c, temp);
  78 }
  79
  80
  81 static void __devinit quirk_uli1575(struct pci_dev *dev)
  82 {
  83         int i;
  84
  85         if (!uses_fsl_uli_m1575)
  86                 return;
  87
  88         /*
  89          * ULI1575 interrupts route setup
  90          */
  91
  92         /* ULI1575 IRQ mapping conf register maps PIRQx to IRQn */
  93         for (i = 0; i < 4; i++) {
  94                 u8 val = uli_pirq_to_irq[i*2] | (uli_pirq_to_irq[i*2+1] << 4);
  95                 pci_write_config_byte(dev, 0x48 + i, val);
  96         }
  97
  98         /* USB 1.1 OHCI controller 1: dev 28, func 0 - IRQ12 */
  99         pci_write_config_byte(dev, 0x86, ULI_PIRQD);
 100
 101         /* USB 1.1 OHCI controller 2: dev 28, func 1 - IRQ9 */
 102         pci_write_config_byte(dev, 0x87, ULI_PIRQA);
 103
 104         /* USB 1.1 OHCI controller 3: dev 28, func 2 - IRQ10 */
 105         pci_write_config_byte(dev, 0x88, ULI_PIRQB);
 106
 107         /* Lan controller: dev 27, func 0 - IRQ6 */
 108         pci_write_config_byte(dev, 0x89, ULI_PIRQF);
 109
 110         /* AC97 Audio controller: dev 29, func 0 - IRQ6 */
 111         pci_write_config_byte(dev, 0x8a, ULI_PIRQF);
 112
 113         /* Modem controller: dev 29, func 1 - IRQ6 */
 114         pci_write_config_byte(dev, 0x8b, ULI_PIRQF);
 115
 116         /* HD Audio controller: dev 29, func 2 - IRQ6 */
 117         pci_write_config_byte(dev, 0x8c, ULI_PIRQF);
 118
 119         /* SATA controller: dev 31, func 1 - IRQ5 */
 120         pci_write_config_byte(dev, 0x8d, ULI_PIRQE);
 121
 122         /* SMB interrupt: dev 30, func 1 - IRQ7 */
 123         pci_write_config_byte(dev, 0x8e, ULI_PIRQG);
 124
 125         /* PMU ACPI SCI interrupt: dev 30, func 2 - IRQ7 */
 126         pci_write_config_byte(dev, 0x8f, ULI_PIRQG);
 127
 128         /* USB 2.0 controller: dev 28, func 3 */
 129         pci_write_config_byte(dev, 0x74, ULI_8259_IRQ11);
 130
 131         /* Primary PATA IDE IRQ: 14
 132          * Secondary PATA IDE IRQ: 15
 133          */
 134         pci_write_config_byte(dev, 0x44, 0x30 | ULI_8259_IRQ14);
 135         pci_write_config_byte(dev, 0x75, ULI_8259_IRQ15);
 136 }
 137
 138 static void __devinit quirk_final_uli1575(struct pci_dev *dev)
 139 {
 140         /* Set i8259 interrupt trigger
 141          * IRQ 3:  Level
 142          * IRQ 4:  Level
 143          * IRQ 5:  Level
 144          * IRQ 6:  Level
 145          * IRQ 7:  Level
 146          * IRQ 9:  Level
 147          * IRQ 10: Level
 148          * IRQ 11: Level
 149          * IRQ 12: Level
 150          * IRQ 14: Edge
 151          * IRQ 15: Edge
 152          */
 153         if (!uses_fsl_uli_m1575)
 154                 return;
 155
 156         outb(0xfa, 0x4d0);
 157         outb(0x1e, 0x4d1);
 158
 159         /* setup RTC */
 160         CMOS_WRITE(RTC_SET, RTC_CONTROL);
 161         CMOS_WRITE(RTC_24H, RTC_CONTROL);
 162
 163         /* ensure month, date, and week alarm fields are ignored */
 164         CMOS_WRITE(0, RTC_VALID);
 165
 166         outb_p(0x7c, 0x72);
 167         outb_p(RTC_ALARM_DONT_CARE, 0x73);
 168
 169         outb_p(0x7d, 0x72);
 170         outb_p(RTC_ALARM_DONT_CARE, 0x73);
 171 }
 172
 173 /* SATA */
 174 static void __devinit quirk_uli5288(struct pci_dev *dev)
 175 {
 176         unsigned char c;
 177         unsigned int d;
 178
 179         if (!uses_fsl_uli_m1575)
 180                 return;
 181
 182         /* read/write lock */
 183         pci_read_config_byte(dev, 0x83, &c);
 184         pci_write_config_byte(dev, 0x83, c|0x80);
 185
 186         pci_read_config_dword(dev, PCI_CLASS_REVISION, &d);
 187         d = (d & 0xff) | (PCI_CLASS_STORAGE_SATA_AHCI << 8);
 188         pci_write_config_dword(dev, PCI_CLASS_REVISION, d);
 189
 190         /* restore lock */
 191         pci_write_config_byte(dev, 0x83, c);
 192
 193         /* disable emulated PATA mode enabled */
 194         pci_read_config_byte(dev, 0x84, &c);
 195         pci_write_config_byte(dev, 0x84, c & ~0x01);
 196 }
 197
 198 /* PATA */
 199 static void __devinit quirk_uli5229(struct pci_dev *dev)
 200 {
 201         unsigned short temp;
 202
 203         if (!uses_fsl_uli_m1575)
 204                 return;
 205
 206         pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE |
 207                 PCI_COMMAND_MASTER | PCI_COMMAND_IO);
 208
 209         /* Enable Native IRQ 14/15 */
 210         pci_read_config_word(dev, 0x4a, &temp);
 211         pci_write_config_word(dev, 0x4a, temp | 0x1000);
 212 }
 213
 214 /* We have to do a dummy read on the P2P for the RTC to work, WTF */
 215 static void __devinit quirk_final_uli5249(struct pci_dev *dev)
 216 {
 217         int i;
 218         u8 *dummy;
 219         struct pci_bus *bus = dev->bus;
 220
 221         for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
 222                 if ((bus->resource[i]) &&
 223                         (bus->resource[i]->flags & IORESOURCE_MEM)) {
 224                         dummy = ioremap(bus->resource[i]->start, 0x4);
 225                         if (dummy) {
 226                                 in_8(dummy);
 227                                 iounmap(dummy);
 228                         }
 229                         break;
 230                 }
 231         }
 232 }
 233
 234 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AL, 0x5249, early_uli5249);
 235 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, quirk_uli1575);
 236 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5288, quirk_uli5288);
 237 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x5229, quirk_uli5229);
 238 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x5249, quirk_final_uli5249);
 239 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, 0x1575, quirk_final_uli1575);
 240
 241 int uli_exclude_device(struct pci_controller *hose,
 242                         u_char bus, u_char devfn)
 243 {
 244         if (bus == (hose->first_busno + 2)) {
 245                 /* exclude Modem controller */
 246                 if ((PCI_SLOT(devfn) == 29) && (PCI_FUNC(devfn) == 1))
 247                         return PCIBIOS_DEVICE_NOT_FOUND;
 248
 249                 /* exclude HD Audio controller */
 250                 if ((PCI_SLOT(devfn) == 29) && (PCI_FUNC(devfn) == 2))
 251                         return PCIBIOS_DEVICE_NOT_FOUND;
 252         }
 253
 254         return PCIBIOS_SUCCESSFUL;
 255 }