Factor out SPI write/read chunking wrappers
Corresponding to flashrom svn r1298.
Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/spi.c b/spi.c
index 7e9ff1a..5857fda 100644
--- a/spi.c
+++ b/spi.c
@@ -34,6 +34,8 @@
const struct spi_programmer spi_programmer[] = {
{ /* SPI_CONTROLLER_NONE */
+ .max_data_read = MAX_DATA_UNSPECIFIED,
+ .max_data_write = MAX_DATA_UNSPECIFIED,
.command = NULL,
.multicommand = NULL,
.read = NULL,
@@ -43,27 +45,35 @@
#if CONFIG_INTERNAL == 1
#if defined(__i386__) || defined(__x86_64__)
{ /* SPI_CONTROLLER_ICH7 */
+ .max_data_read = 64,
+ .max_data_write = 64,
.command = ich_spi_send_command,
.multicommand = ich_spi_send_multicommand,
- .read = ich_spi_read,
- .write_256 = ich_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
{ /* SPI_CONTROLLER_ICH9 */
+ .max_data_read = 64,
+ .max_data_write = 64,
.command = ich_spi_send_command,
.multicommand = ich_spi_send_multicommand,
- .read = ich_spi_read,
- .write_256 = ich_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
{ /* SPI_CONTROLLER_IT85XX */
+ .max_data_read = 64,
+ .max_data_write = 64,
.command = it85xx_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = it85_spi_read,
- .write_256 = it85_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
{ /* SPI_CONTROLLER_IT87XX */
+ .max_data_read = MAX_DATA_UNSPECIFIED,
+ .max_data_write = MAX_DATA_UNSPECIFIED,
.command = it8716f_spi_send_command,
.multicommand = default_spi_send_multicommand,
.read = it8716f_spi_chip_read,
@@ -71,20 +81,26 @@
},
{ /* SPI_CONTROLLER_SB600 */
+ .max_data_read = 8,
+ .max_data_write = 5,
.command = sb600_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = sb600_spi_read,
- .write_256 = sb600_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
{ /* SPI_CONTROLLER_VIA */
+ .max_data_read = 16,
+ .max_data_write = 16,
.command = ich_spi_send_command,
.multicommand = ich_spi_send_multicommand,
- .read = ich_spi_read,
- .write_256 = ich_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
{ /* SPI_CONTROLLER_WBSIO */
+ .max_data_read = MAX_DATA_UNSPECIFIED,
+ .max_data_write = MAX_DATA_UNSPECIFIED,
.command = wbsio_spi_send_command,
.multicommand = default_spi_send_multicommand,
.read = wbsio_spi_read,
@@ -92,43 +108,53 @@
},
{ /* SPI_CONTROLLER_MCP6X_BITBANG */
+ .max_data_read = MAX_DATA_READ_UNLIMITED,
+ .max_data_write = MAX_DATA_WRITE_UNLIMITED,
.command = bitbang_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = bitbang_spi_read,
- .write_256 = bitbang_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
#endif
#endif
#if CONFIG_FT2232_SPI == 1
{ /* SPI_CONTROLLER_FT2232 */
+ .max_data_read = 64 * 1024,
+ .max_data_write = 256,
.command = ft2232_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = ft2232_spi_read,
- .write_256 = ft2232_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
#endif
#if CONFIG_DUMMY == 1
{ /* SPI_CONTROLLER_DUMMY */
+ .max_data_read = MAX_DATA_READ_UNLIMITED,
+ .max_data_write = MAX_DATA_UNSPECIFIED,
.command = dummy_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = dummy_spi_read,
+ .read = default_spi_read,
.write_256 = dummy_spi_write_256,
},
#endif
#if CONFIG_BUSPIRATE_SPI == 1
{ /* SPI_CONTROLLER_BUSPIRATE */
+ .max_data_read = 12,
+ .max_data_write = 12,
.command = buspirate_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = buspirate_spi_read,
- .write_256 = buspirate_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
#endif
#if CONFIG_DEDIPROG == 1
{ /* SPI_CONTROLLER_DEDIPROG */
+ .max_data_read = MAX_DATA_UNSPECIFIED,
+ .max_data_write = MAX_DATA_UNSPECIFIED,
.command = dediprog_spi_send_command,
.multicommand = default_spi_send_multicommand,
.read = dediprog_spi_read,
@@ -138,28 +164,34 @@
#if CONFIG_RAYER_SPI == 1
{ /* SPI_CONTROLLER_RAYER */
+ .max_data_read = MAX_DATA_READ_UNLIMITED,
+ .max_data_write = MAX_DATA_WRITE_UNLIMITED,
.command = bitbang_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = bitbang_spi_read,
- .write_256 = bitbang_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
#endif
#if CONFIG_NICINTEL_SPI == 1
{ /* SPI_CONTROLLER_NICINTEL */
+ .max_data_read = MAX_DATA_READ_UNLIMITED,
+ .max_data_write = MAX_DATA_WRITE_UNLIMITED,
.command = bitbang_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = bitbang_spi_read,
- .write_256 = bitbang_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
#endif
#if CONFIG_OGP_SPI == 1
{ /* SPI_CONTROLLER_OGP */
+ .max_data_read = MAX_DATA_READ_UNLIMITED,
+ .max_data_write = MAX_DATA_WRITE_UNLIMITED,
.command = bitbang_spi_send_command,
.multicommand = default_spi_send_multicommand,
- .read = bitbang_spi_read,
- .write_256 = bitbang_spi_write_256,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
},
#endif
@@ -223,6 +255,30 @@
return result;
}
+int default_spi_read(struct flashchip *flash, uint8_t *buf, int start, int len)
+{
+ int max_data = spi_programmer[spi_controller].max_data_read;
+ if (max_data == MAX_DATA_UNSPECIFIED) {
+ msg_perr("%s called, but SPI read chunk size not defined "
+ "on this hardware. Please report a bug at "
+ "flashrom@flashrom.org\n", __func__);
+ return 1;
+ }
+ return spi_read_chunked(flash, buf, start, len, max_data);
+}
+
+int default_spi_write_256(struct flashchip *flash, uint8_t *buf, int start, int len)
+{
+ int max_data = spi_programmer[spi_controller].max_data_write;
+ if (max_data == MAX_DATA_UNSPECIFIED) {
+ msg_perr("%s called, but SPI write chunk size not defined "
+ "on this hardware. Please report a bug at "
+ "flashrom@flashrom.org\n", __func__);
+ return 1;
+ }
+ return spi_write_chunked(flash, buf, start, len, max_data);
+}
+
int spi_chip_read(struct flashchip *flash, uint8_t *buf, int start, int len)
{
int addrbase = 0;