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nicintel_spi.c: Implement set_sck_set_mosi and set_sck_get_miso

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Tested on a 8086:1533 (i210 GbE), reads still return the same data.
This cuts the time to read a Winbond W25Q80.V (1 MiB, SPI) from 66
seconds down to 48 seconds, i.e. a 37.5% increase in speed.

Change-Id: I52a0ae5ff331ee2ed41652eb5c2ed7ebe7253d74
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/49267
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Angel Pons 2021-06-21 13:01:45 +02:00 committed by Nico Huber
parent 24495cd46e
commit 724a24d702
1 changed files with 27 additions and 0 deletions
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27
nicintel_spi.c
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@ -165,6 +165,19 @@ static void nicintel_bitbang_set_mosi(int val, void *spi_data)
pci_mmio_writel(tmp, data->spibar + FLA);
}
static void nicintel_bitbang_set_sck_set_mosi(int sck, int mosi, void *spi_data)
{
struct nicintel_spi_data *data = spi_data;
uint32_t tmp;
tmp = pci_mmio_readl(data->spibar + FLA);
tmp &= ~BIT(FL_SCK);
tmp &= ~BIT(FL_SI);
tmp |= (sck << FL_SCK);
tmp |= (mosi << FL_SI);
pci_mmio_writel(tmp, data->spibar + FLA);
}
static int nicintel_bitbang_get_miso(void *spi_data)
{
struct nicintel_spi_data *data = spi_data;
@ -175,10 +188,24 @@ static int nicintel_bitbang_get_miso(void *spi_data)
return tmp;
}
static int nicintel_bitbang_set_sck_get_miso(int sck, void *spi_data)
{
struct nicintel_spi_data *data = spi_data;
uint32_t tmp;
tmp = pci_mmio_readl(data->spibar + FLA);
tmp &= ~BIT(FL_SCK);
tmp |= (sck << FL_SCK);
pci_mmio_writel(tmp, data->spibar + FLA);
return (tmp >> FL_SO) & 0x1;
}
static const struct bitbang_spi_master bitbang_spi_master_nicintel = {
.set_cs = nicintel_bitbang_set_cs,
.set_sck = nicintel_bitbang_set_sck,
.set_mosi = nicintel_bitbang_set_mosi,
.set_sck_set_mosi = nicintel_bitbang_set_sck_set_mosi,
.set_sck_get_miso = nicintel_bitbang_set_sck_get_miso,
.get_miso = nicintel_bitbang_get_miso,
.request_bus = nicintel_request_spibus,
.release_bus = nicintel_release_spibus,