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