qemu/hw/xen/xen_pt_load_rom.c
Markus Armbruster d5938f29fe Clean up inclusion of sysemu/sysemu.h
In my "build everything" tree, changing sysemu/sysemu.h triggers a
recompile of some 5400 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

Almost a third of its inclusions are actually superfluous.  Delete
them.  Downgrade two more to qapi/qapi-types-run-state.h, and move one
from char/serial.h to char/serial.c.

hw/semihosting/config.c, monitor/monitor.c, qdev-monitor.c, and
stubs/semihost.c define variables declared in sysemu/sysemu.h without
including it.  The compiler is cool with that, but include it anyway.

This doesn't reduce actual use much, as it's still included into
widely included headers.  The next commit will tackle that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-27-armbru@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
2019-08-16 13:31:53 +02:00

87 lines
2.6 KiB
C

/*
* This is splited from hw/i386/kvm/pci-assign.c
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/i386/pc.h"
#include "qemu/error-report.h"
#include "ui/console.h"
#include "hw/loader.h"
#include "monitor/monitor.h"
#include "qemu/range.h"
#include "hw/pci/pci.h"
#include "xen_pt.h"
/*
* Scan the assigned devices for the devices that have an option ROM, and then
* load the corresponding ROM data to RAM. If an error occurs while loading an
* option ROM, we just ignore that option ROM and continue with the next one.
*/
void *pci_assign_dev_load_option_rom(PCIDevice *dev,
int *size, unsigned int domain,
unsigned int bus, unsigned int slot,
unsigned int function)
{
char name[32], rom_file[64];
FILE *fp;
uint8_t val;
struct stat st;
void *ptr = NULL;
Object *owner = OBJECT(dev);
/* If loading ROM from file, pci handles it */
if (dev->romfile || !dev->rom_bar) {
return NULL;
}
snprintf(rom_file, sizeof(rom_file),
"/sys/bus/pci/devices/%04x:%02x:%02x.%01x/rom",
domain, bus, slot, function);
/* Write "1" to the ROM file to enable it */
fp = fopen(rom_file, "r+");
if (fp == NULL) {
if (errno != ENOENT) {
error_report("pci-assign: Cannot open %s: %s", rom_file, strerror(errno));
}
return NULL;
}
if (fstat(fileno(fp), &st) == -1) {
error_report("pci-assign: Cannot stat %s: %s", rom_file, strerror(errno));
goto close_rom;
}
val = 1;
if (fwrite(&val, 1, 1, fp) != 1) {
goto close_rom;
}
fseek(fp, 0, SEEK_SET);
snprintf(name, sizeof(name), "%s.rom", object_get_typename(owner));
memory_region_init_ram(&dev->rom, owner, name, st.st_size, &error_abort);
ptr = memory_region_get_ram_ptr(&dev->rom);
memset(ptr, 0xff, st.st_size);
if (!fread(ptr, 1, st.st_size, fp)) {
error_report("pci-assign: Cannot read from host %s", rom_file);
error_printf("Device option ROM contents are probably invalid "
"(check dmesg).\nSkip option ROM probe with rombar=0, "
"or load from file with romfile=\n");
goto close_rom;
}
pci_register_bar(dev, PCI_ROM_SLOT, 0, &dev->rom);
dev->has_rom = true;
*size = st.st_size;
close_rom:
/* Write "0" to disable ROM */
fseek(fp, 0, SEEK_SET);
val = 0;
if (!fwrite(&val, 1, 1, fp)) {
XEN_PT_WARN(dev, "%s\n", "Failed to disable pci-sysfs rom file");
}
fclose(fp);
return ptr;
}