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nicrealtek.c: Refactor singleton states into reentrant pattern

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Move global singleton states into a struct and store within
the par_master data field for the life-time of the driver.

This is one of the steps on the way to move par_master data
memory management behind the initialisation API, for more
context see other patches under the same topic "register_master_api".

BUG=b:185191942
TEST=builds

Change-Id: If0cb0fefb53b2c6bb65a85f4c8dc6f323954dd0c
Signed-off-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/55108
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Anastasia Klimchuk 2021-06-01 11:51:01 +10:00 committed by Nico Huber
parent 2376ccf00a
commit 7fd6592956
1 changed files with 31 additions and 10 deletions
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41
nicrealtek.c
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@ -24,8 +24,11 @@
#define PCI_VENDOR_ID_REALTEK 0x10ec
#define PCI_VENDOR_ID_SMC1211 0x1113
static uint32_t io_base_addr = 0;
static int bios_rom_addr, bios_rom_data;
struct nicrealtek_data {
uint32_t io_base_addr;
int bios_rom_addr;
int bios_rom_data;
};
static const struct dev_entry nics_realtek[] = {
{0x10ec, 0x8139, OK, "Realtek", "RTL8139/8139C/8139C+"},
@ -37,38 +40,41 @@ static const struct dev_entry nics_realtek[] = {
static void nicrealtek_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr)
{
struct nicrealtek_data *data = flash->mst->par.data;
/* Output addr and data, set WE to 0, set OE to 1, set CS to 0,
* enable software access.
*/
OUTL(((uint32_t)addr & 0x01FFFF) | 0x0A0000 | (val << 24),
io_base_addr + bios_rom_addr);
data->io_base_addr + data->bios_rom_addr);
/* Output addr and data, set WE to 1, set OE to 1, set CS to 1,
* enable software access.
*/
OUTL(((uint32_t)addr & 0x01FFFF) | 0x1E0000 | (val << 24),
io_base_addr + bios_rom_addr);
data->io_base_addr + data->bios_rom_addr);
}
static uint8_t nicrealtek_chip_readb(const struct flashctx *flash, const chipaddr addr)
{
struct nicrealtek_data *data = flash->mst->par.data;
uint8_t val;
/* FIXME: Can we skip reading the old data and simply use 0? */
/* Read old data. */
val = INB(io_base_addr + bios_rom_data);
val = INB(data->io_base_addr + data->bios_rom_data);
/* Output new addr and old data, set WE to 1, set OE to 0, set CS to 0,
* enable software access.
*/
OUTL(((uint32_t)addr & 0x01FFFF) | 0x060000 | (val << 24),
io_base_addr + bios_rom_addr);
data->io_base_addr + data->bios_rom_addr);
/* Read new data. */
val = INB(io_base_addr + bios_rom_data);
val = INB(data->io_base_addr + data->bios_rom_data);
/* Output addr and new data, set WE to 1, set OE to 1, set CS to 1,
* enable software access.
*/
OUTL(((uint32_t)addr & 0x01FFFF) | 0x1E0000 | (val << 24),
io_base_addr + bios_rom_addr);
data->io_base_addr + data->bios_rom_addr);
return val;
}
@ -87,12 +93,16 @@ static const struct par_master par_master_nicrealtek = {
static int nicrealtek_shutdown(void *data)
{
/* FIXME: We forgot to disable software access again. */
free(data);
return 0;
}
static int nicrealtek_init(void)
{
struct pci_dev *dev = NULL;
uint32_t io_base_addr = 0;
int bios_rom_addr;
int bios_rom_data;
if (rget_io_perms())
return 1;
@ -119,10 +129,21 @@ static int nicrealtek_init(void)
break;
}
if (register_shutdown(nicrealtek_shutdown, NULL))
struct nicrealtek_data *data = calloc(1, sizeof(*data));
if (!data) {
msg_perr("Unable to allocate space for PAR master data\n");
return 1;
}
data->io_base_addr = io_base_addr;
data->bios_rom_addr = bios_rom_addr;
data->bios_rom_data = bios_rom_data;
register_par_master(&par_master_nicrealtek, BUS_PARALLEL, NULL);
if (register_shutdown(nicrealtek_shutdown, data)) {
free(data);
return 1;
}
register_par_master(&par_master_nicrealtek, BUS_PARALLEL, data);
return 0;
}