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/*
* pci_host.c
*
* Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "pci.h"
#include "pci_host.h"
/* debug PCI */
//#define DEBUG_PCI
#ifdef DEBUG_PCI
#define PCI_DPRINTF(fmt, ...) \
do { printf("pci_host_data: " fmt , ## __VA_ARGS__); } while (0)
#else
#define PCI_DPRINTF(fmt, ...)
#endif
/*
* PCI address
* bit 16 - 24: bus number
* bit 8 - 15: devfun number
* bit 0 - 7: offset in configuration space of a given pci device
*/
/* the helper functio to get a PCIDeice* for a given pci address */
static inline PCIDevice *pci_dev_find_by_addr(PCIBus *bus, uint32_t addr)
{
uint8_t bus_num = (addr >> 16) & 0xff;
uint8_t devfn = (addr >> 8) & 0xff;
return pci_find_device(bus, bus_num, PCI_SLOT(devfn), PCI_FUNC(devfn));
}
void pci_data_write(PCIBus *s, uint32_t addr, uint32_t val, int len)
{
PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr);
uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1);
if (!pci_dev)
return;
PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRI32x" len=%d\n",
__func__, pci_dev->name, config_addr, val, len);
pci_dev->config_write(pci_dev, config_addr, val, len);
}
uint32_t pci_data_read(PCIBus *s, uint32_t addr, int len)
{
PCIDevice *pci_dev = pci_dev_find_by_addr(s, addr);
uint32_t config_addr = addr & (PCI_CONFIG_SPACE_SIZE - 1);
uint32_t val;
assert(len == 1 || len == 2 || len == 4);
if (!pci_dev) {
return ~0x0;
}
val = pci_dev->config_read(pci_dev, config_addr, len);
PCI_DPRINTF("%s: %s: addr=%02"PRIx32" val=%08"PRIx32" len=%d\n",
__func__, pci_dev->name, config_addr, val, len);
return val;
}
static void pci_host_config_writel(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
PCIHostState *s = opaque;
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap32(val);
#endif
PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n",
__func__, addr, val);
s->config_reg = val;
}
static uint32_t pci_host_config_readl(void *opaque, target_phys_addr_t addr)
{
PCIHostState *s = opaque;
uint32_t val = s->config_reg;
#ifdef TARGET_WORDS_BIGENDIAN
val = bswap32(val);
#endif
PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n",
__func__, addr, val);
return val;
}
static CPUWriteMemoryFunc * const pci_host_config_write[] = {
&pci_host_config_writel,
&pci_host_config_writel,
&pci_host_config_writel,
};
static CPUReadMemoryFunc * const pci_host_config_read[] = {
&pci_host_config_readl,
&pci_host_config_readl,
&pci_host_config_readl,
};
int pci_host_config_register_io_memory(PCIHostState *s)
{
return cpu_register_io_memory(pci_host_config_read,
pci_host_config_write, s);
}
static void pci_host_config_writel_noswap(void *opaque,
target_phys_addr_t addr,
uint32_t val)
{
PCIHostState *s = opaque;
PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n",
__func__, addr, val);
s->config_reg = val;
}
static uint32_t pci_host_config_readl_noswap(void *opaque,
target_phys_addr_t addr)
{
PCIHostState *s = opaque;
uint32_t val = s->config_reg;
PCI_DPRINTF("%s addr " TARGET_FMT_plx " val %"PRIx32"\n",
__func__, addr, val);
return val;
}
static CPUWriteMemoryFunc * const pci_host_config_write_noswap[] = {
&pci_host_config_writel_noswap,
&pci_host_config_writel_noswap,
&pci_host_config_writel_noswap,
};
static CPUReadMemoryFunc * const pci_host_config_read_noswap[] = {
&pci_host_config_readl_noswap,
&pci_host_config_readl_noswap,
&pci_host_config_readl_noswap,
};
int pci_host_config_register_io_memory_noswap(PCIHostState *s)
{
return cpu_register_io_memory(pci_host_config_read_noswap,
pci_host_config_write_noswap, s);
}
static void pci_host_config_writel_ioport(void *opaque,
uint32_t addr, uint32_t val)
{
PCIHostState *s = opaque;
PCI_DPRINTF("%s addr %"PRIx32 " val %"PRIx32"\n", __func__, addr, val);
s->config_reg = val;
}
static uint32_t pci_host_config_readl_ioport(void *opaque, uint32_t addr)
{
PCIHostState *s = opaque;
uint32_t val = s->config_reg;
PCI_DPRINTF("%s addr %"PRIx32" val %"PRIx32"\n", __func__, addr, val);
return val;
}
void pci_host_config_register_ioport(pio_addr_t ioport, PCIHostState *s)
{
register_ioport_write(ioport, 4, 4, pci_host_config_writel_ioport, s);
register_ioport_read(ioport, 4, 4, pci_host_config_readl_ioport, s);
}
#define PCI_ADDR_T target_phys_addr_t
#define PCI_HOST_SUFFIX _mmio
#include "pci_host_template.h"
static CPUWriteMemoryFunc * const pci_host_data_write_mmio[] = {
pci_host_data_writeb_mmio,
pci_host_data_writew_mmio,
pci_host_data_writel_mmio,
};
static CPUReadMemoryFunc * const pci_host_data_read_mmio[] = {
pci_host_data_readb_mmio,
pci_host_data_readw_mmio,
pci_host_data_readl_mmio,
};
int pci_host_data_register_io_memory(PCIHostState *s)
{
return cpu_register_io_memory(pci_host_data_read_mmio,
pci_host_data_write_mmio,
s);
}
#undef PCI_ADDR_T
#undef PCI_HOST_SUFFIX
#define PCI_ADDR_T uint32_t
#define PCI_HOST_SUFFIX _ioport
#include "pci_host_template.h"
void pci_host_data_register_ioport(pio_addr_t ioport, PCIHostState *s)
{
register_ioport_write(ioport, 4, 1, pci_host_data_writeb_ioport, s);
register_ioport_write(ioport, 4, 2, pci_host_data_writew_ioport, s);
register_ioport_write(ioport, 4, 4, pci_host_data_writel_ioport, s);
register_ioport_read(ioport, 4, 1, pci_host_data_readb_ioport, s);
register_ioport_read(ioport, 4, 2, pci_host_data_readw_ioport, s);
register_ioport_read(ioport, 4, 4, pci_host_data_readl_ioport, s);
}
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