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atapromise: 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: I981e2f32926c1696bd0e3248ada92b9e37dafde0
Signed-off-by: Alexander Goncharov <chat@joursoir.net>
Ticket: https://ticket.coreboot.org/issues/391
Reviewed-on: https://review.coreboot.org/c/flashrom/+/65706
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Thomas Heijligen <src@posteo.de>
This commit is contained in:
Alexander Goncharov
2022-07-07 21:16:36 +03:00
committed by Anastasia Klimchuk
parent 7204b68535
commit 96fb37cb0f
1 changed files with 41 additions and 17 deletions
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58
atapromise.c
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@@ -40,11 +40,12 @@
* tested Ultra100 uses a 128 kB MX29F001T chip), the chip size is hackishly adjusted in atapromise_limit_chip. * tested Ultra100 uses a 128 kB MX29F001T chip), the chip size is hackishly adjusted in atapromise_limit_chip.
*/ */
static uint32_t io_base_addr = 0; struct atapromise_data {
static uint32_t rom_base_addr = 0; uint32_t io_base_addr;
uint32_t rom_base_addr;
static uint8_t *atapromise_bar = NULL; uint8_t *atapromise_bar;
static size_t rom_size = 0; size_t rom_size;
};
static const struct dev_entry ata_promise[] = { static const struct dev_entry ata_promise[] = {
{0x105a, 0x4d38, NT, "Promise", "PDC20262 (FastTrak66/Ultra66)"}, {0x105a, 0x4d38, NT, "Promise", "PDC20262 (FastTrak66/Ultra66)"},
@@ -59,7 +60,7 @@ static void *atapromise_map(const char *descr, uintptr_t phys_addr, size_t len)
return NULL; return NULL;
} }
static void atapromise_limit_chip(struct flashchip *chip) static void atapromise_limit_chip(struct flashchip *chip, size_t rom_size)
{ {
unsigned int i, size; unsigned int i, size;
unsigned int usable_erasers = 0; unsigned int usable_erasers = 0;
@@ -94,17 +95,26 @@ static void atapromise_limit_chip(struct flashchip *chip)
static void atapromise_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr) static void atapromise_chip_writeb(const struct flashctx *flash, uint8_t val, chipaddr addr)
{ {
uint32_t data; const struct atapromise_data *data = flash->mst->par.data;
uint32_t value;
atapromise_limit_chip(flash->chip); atapromise_limit_chip(flash->chip, data->rom_size);
data = (rom_base_addr + (addr & ADDR_MASK)) << 8 | val; value = (data->rom_base_addr + (addr & ADDR_MASK)) << 8 | val;
OUTL(data, io_base_addr + 0x14); OUTL(value, data->io_base_addr + 0x14);
} }
static uint8_t atapromise_chip_readb(const struct flashctx *flash, const chipaddr addr) static uint8_t atapromise_chip_readb(const struct flashctx *flash, const chipaddr addr)
{ {
atapromise_limit_chip(flash->chip); const struct atapromise_data *data = flash->mst->par.data;
return pci_mmio_readb(atapromise_bar + (addr & ADDR_MASK));
atapromise_limit_chip(flash->chip, data->rom_size);
return pci_mmio_readb(data->atapromise_bar + (addr & ADDR_MASK));
}
static int atapromise_shutdown(void *par_data)
{
free(par_data);
return 0;
} }
static const struct par_master par_master_atapromise = { static const struct par_master par_master_atapromise = {
@@ -116,11 +126,16 @@ static const struct par_master par_master_atapromise = {
.chip_writew = fallback_chip_writew, .chip_writew = fallback_chip_writew,
.chip_writel = fallback_chip_writel, .chip_writel = fallback_chip_writel,
.chip_writen = fallback_chip_writen, .chip_writen = fallback_chip_writen,
.shutdown = atapromise_shutdown,
}; };
static int atapromise_init(void) static int atapromise_init(void)
{ {
struct pci_dev *dev = NULL; struct pci_dev *dev = NULL;
uint32_t io_base_addr;
uint32_t rom_base_addr;
uint8_t *bar;
size_t rom_size;
if (rget_io_perms()) if (rget_io_perms())
return 1; return 1;
@@ -146,19 +161,28 @@ static int atapromise_init(void)
} }
rom_size = dev->rom_size > MAX_ROM_DECODE ? MAX_ROM_DECODE : dev->rom_size; rom_size = dev->rom_size > MAX_ROM_DECODE ? MAX_ROM_DECODE : dev->rom_size;
atapromise_bar = (uint8_t*)rphysmap("Promise", rom_base_addr, rom_size); bar = (uint8_t*)rphysmap("Promise", rom_base_addr, rom_size);
if (atapromise_bar == ERROR_PTR) { if (bar == ERROR_PTR) {
return 1; return 1;
} }
max_rom_decode.parallel = rom_size;
msg_pwarn("Do not use this device as a generic programmer. It will leave anything outside\n" msg_pwarn("Do not use this device as a generic programmer. It will leave anything outside\n"
"the first %zu kB of the flash chip in an undefined state. It works fine for the\n" "the first %zu kB of the flash chip in an undefined state. It works fine for the\n"
"purpose of updating the firmware of this device (padding may necessary).\n", "purpose of updating the firmware of this device (padding may necessary).\n",
rom_size / 1024); rom_size / 1024);
return register_par_master(&par_master_atapromise, BUS_PARALLEL, NULL); struct atapromise_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->rom_base_addr = rom_base_addr;
data->atapromise_bar = bar;
data->rom_size = rom_size;
max_rom_decode.parallel = rom_size;
return register_par_master(&par_master_atapromise, BUS_PARALLEL, data);
} }
const struct programmer_entry programmer_atapromise = { const struct programmer_entry programmer_atapromise = {