sm.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/smbus.h>
#include <arch/ioapic.h>
 
#include "hudson.h"
#include "smbus.c"
 
#define NMI_OFF 0
 
#define MAINBOARD_POWER_OFF 0
#define MAINBOARD_POWER_ON 1
 
/*
* HUDSON enables all USB controllers by default in SMBUS Control.
* HUDSON enables SATA by default in SMBUS Control.
*/
 
static void sm_init(struct device *dev)
{
        setup_ioapic(VIO_APIC_VADDR, CONFIG_MAX_CPUS);
}
 
static int lsmbus_recv_byte(struct device *dev)
{
        u32 device;
        struct resource *res;
        struct bus *pbus;
 
        device = dev->path.i2c.device;
        pbus = get_pbus_smbus(dev);
 
        res = find_resource(pbus->dev, 0x90);
 
        return do_smbus_recv_byte(res->base, device);
}
 
static int lsmbus_send_byte(struct device *dev, u8 val)
{
        u32 device;
        struct resource *res;
        struct bus *pbus;
 
        device = dev->path.i2c.device;
        pbus = get_pbus_smbus(dev);
 
        res = find_resource(pbus->dev, 0x90);
 
        return do_smbus_send_byte(res->base, device, val);
}
 
static int lsmbus_read_byte(struct device *dev, u8 address)
{
        u32 device;
        struct resource *res;
        struct bus *pbus;
 
        device = dev->path.i2c.device;
        pbus = get_pbus_smbus(dev);
 
        res = find_resource(pbus->dev, 0x90);
 
        return do_smbus_read_byte(res->base, device, address);
}
 
static int lsmbus_write_byte(struct device *dev, u8 address, u8 val)
{
        u32 device;
        struct resource *res;
        struct bus *pbus;
 
        device = dev->path.i2c.device;
        pbus = get_pbus_smbus(dev);
 
        res = find_resource(pbus->dev, 0x90);
 
        return do_smbus_write_byte(res->base, device, address, val);
}
static struct smbus_bus_operations lops_smbus_bus = {
        .recv_byte = lsmbus_recv_byte,
        .send_byte = lsmbus_send_byte,
        .read_byte = lsmbus_read_byte,
        .write_byte = lsmbus_write_byte,
};
 
static void hudson_sm_read_resources(struct device *dev)
{
}
 
static void hudson_sm_set_resources(struct device *dev)
{
}
 
static struct device_operations smbus_ops = {
        .read_resources = hudson_sm_read_resources,
        .set_resources = hudson_sm_set_resources,
        .enable_resources = pci_dev_enable_resources,
        .init = sm_init,
        .scan_bus = scan_smbus,
        .ops_pci = &pci_dev_ops_pci,
        .ops_smbus_bus = &lops_smbus_bus,
};
static const struct pci_driver smbus_driver __pci_driver = {
        .ops = &smbus_ops,
        .vendor = PCI_VID_AMD,
        .device = PCI_DID_AMD_SB900_SM,
};