src/southbridge/broadcom/bcm5785/bcm5785_sb_pci_main.c

   1 /*
   2  * Copyright  2005 AMD
   3  *  by yinghai.lu@amd.com
   4  */
   5
   6 #include <console/console.h>
   7 #include <device/device.h>
   8 #include <device/pci.h>
   9 #include <device/pnp.h>
  10 #include <device/pci_ids.h>
  11 #include <device/pci_ops.h>
  12 #include <pc80/mc146818rtc.h>
  13 #include <pc80/isa-dma.h>
  14 #include <bitops.h>
  15 #include <arch/io.h>
  16 #include <device/smbus.h>
  17 #include "bcm5785.h"
  18 #include "bcm5785_smbus.h"
  19
  20 #define NMI_OFF 0
  21
  22 static void sb_init(device_t dev)
  23 {
  24         uint8_t byte;
  25         uint8_t byte_old;
  26         int nmi_option;
  27
  28         uint32_t dword;
  29
  30         /* Set up NMI on errors */
  31         byte = inb(0x70); // RTC70
  32         byte_old = byte;
  33         nmi_option = NMI_OFF;
  34         get_option(&nmi_option, "nmi");
  35         if (nmi_option) {
  36                 byte &= ~(1 << 7); /* set NMI */
  37         } else {
  38                 byte |= ( 1 << 7); // Can not mask NMI from PCI-E and NMI_NOW
  39         }
  40         if( byte != byte_old) {
  41                 outb(byte, 0x70);
  42         }
  43
  44
  45 }
  46
  47 static void bcm5785_sb_read_resources(device_t dev)
  48 {
  49         struct resource *res;
  50         unsigned long index;
  51
  52         /* Get the normal pci resources of this device */
  53         pci_dev_read_resources(dev);
  54         /* Get Resource for SMBUS */
  55         pci_get_resource(dev, 0x90);
  56
  57         compact_resources(dev);
  58
  59         /* Add an extra subtractive resource for both memory and I/O */
  60         res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
  61         res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
  62
  63         res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
  64         res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
  65
  66 }
  67 static int lsmbus_recv_byte(device_t dev)
  68 {
  69         unsigned device;
  70         struct resource *res;
  71         struct bus *pbus;
  72
  73         device = dev->path.i2c.device;
  74         pbus = get_pbus_smbus(dev);
  75
  76         res = find_resource(pbus->dev, 0x90);
  77
  78         return do_smbus_recv_byte(res->base, device);
  79 }
  80
  81 static int lsmbus_send_byte(device_t dev, uint8_t val)
  82 {
  83         unsigned device;
  84         struct resource *res;
  85         struct bus *pbus;
  86
  87         device = dev->path.i2c.device;
  88         pbus = get_pbus_smbus(dev);
  89
  90         res = find_resource(pbus->dev, 0x90);
  91
  92         return do_smbus_send_byte(res->base, device, val);
  93 }
  94 static int lsmbus_read_byte(device_t dev, uint8_t address)
  95 {
  96         unsigned device;
  97         struct resource *res;
  98         struct bus *pbus;
  99
 100         device = dev->path.i2c.device;
 101         pbus = get_pbus_smbus(dev);
 102
 103         res = find_resource(pbus->dev, 0x90);
 104
 105         return do_smbus_read_byte(res->base, device, address);
 106 }
 107 static int lsmbus_write_byte(device_t dev, uint8_t address, uint8_t val)
 108 {
 109         unsigned device;
 110         struct resource *res;
 111         struct bus *pbus;
 112
 113         device = dev->path.i2c.device;
 114         pbus = get_pbus_smbus(dev);
 115
 116         res = find_resource(pbus->dev, 0x90);
 117
 118         return do_smbus_write_byte(res->base, device, address, val);
 119 }
 120 static struct smbus_bus_operations lops_smbus_bus = {
 121         .recv_byte  = lsmbus_recv_byte,
 122         .send_byte  = lsmbus_send_byte,
 123         .read_byte  = lsmbus_read_byte,
 124         .write_byte = lsmbus_write_byte,
 125 };
 126
 127 static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
 128 {
 129         pci_write_config32(dev, 0x2c,
 130                 ((device & 0xffff) << 16) | (vendor & 0xffff));
 131 }
 132
 133 static struct pci_operations lops_pci = {
 134         .set_subsystem = lpci_set_subsystem,
 135 };
 136
 137 static struct device_operations sb_ops = {
 138         .read_resources   = bcm5785_sb_read_resources,
 139         .set_resources    = pci_dev_set_resources,
 140         .enable_resources = pci_dev_enable_resources,
 141         .init             = sb_init,
 142         .scan_bus         = scan_static_bus,
 143 //        .enable           = bcm5785_enable,
 144         .ops_pci          = &lops_pci,
 145         .ops_smbus_bus    = &lops_smbus_bus,
 146 };
 147 static const struct pci_driver sb_driver __pci_driver = {
 148         .ops    = &sb_ops,
 149         .vendor = PCI_VENDOR_ID_SERVERWORKS,
 150         .device = PCI_DEVICE_ID_SERVERWORKS_BCM5785_SB_PCI_MAIN,
 151 };
 152