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path: root/src/southbridge/nvidia/ck804/ck804_ide.c
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/*
 * Copyright 2004 Tyan Computer
 *  by yhlu@tyan.com
 */

#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include "ck804.h"

static void ide_init(struct device *dev)
{
	struct southbridge_nvidia_ck804_config *conf;
	/* Enable ide devices so the linux ide driver will work */
	uint32_t dword;
	uint16_t word;
	uint8_t byte;
	conf = dev->chip_info;

	word = pci_read_config16(dev, 0x50);
	/* Ensure prefetch is disabled */
	word &= ~((1 << 15) | (1 << 13));
	if (conf->ide1_enable) {
		/* Enable secondary ide interface */
		word |= (1<<0);
		printk_debug("IDE1 \t");
	}
	if (conf->ide0_enable) {
		/* Enable primary ide interface */
		word |= (1<<1);
		printk_debug("IDE0\n");
	}

	word |= (1<<12);
	word |= (1<<14);

	pci_write_config16(dev, 0x50, word);


        byte = 0x20 ; // Latency: 64-->32
        pci_write_config8(dev, 0xd, byte);

        dword = pci_read_config32(dev, 0xf8);
        dword |= 12; 
        pci_write_config32(dev, 0xf8, dword);
#if CONFIG_PCI_ROM_RUN == 1
	pci_dev_init(dev);
#endif

}

static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
        pci_write_config32(dev, 0x40,
                ((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct pci_operations lops_pci = {
        .set_subsystem = lpci_set_subsystem,
};

static struct device_operations ide_ops  = {
	.read_resources   = pci_dev_read_resources,
	.set_resources    = pci_dev_set_resources,
	.enable_resources = pci_dev_enable_resources,
	.init             = ide_init,
	.scan_bus         = 0,
//	.enable           = ck804_enable,
	.ops_pci          = &lops_pci,
};

static struct pci_driver ide_driver __pci_driver = {
	.ops    = &ide_ops,
	.vendor = PCI_VENDOR_ID_NVIDIA,
	.device = PCI_DEVICE_ID_NVIDIA_CK804_IDE,
};