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author | Ralf Corsepius <ralf.corsepius@rtems.org> | 2006-01-09 10:36:06 +0000 |
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committer | Ralf Corsepius <ralf.corsepius@rtems.org> | 2006-01-09 10:36:06 +0000 |
commit | bec7ba52314ce3beb962b6dae7131ff59ce3a76b (patch) | |
tree | d4519d9d6d802ae19767af216538fad1c5029c87 /c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c | |
parent | 2006-01-09 Ralf Corsepius <ralf.corsepius@rtems.org> (diff) | |
download | rtems-bec7ba52314ce3beb962b6dae7131ff59ce3a76b.tar.bz2 |
Backport from rtems-4-6-branch.
Diffstat (limited to '')
-rw-r--r-- | c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c b/c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c new file mode 100644 index 0000000000..ea89310d74 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon2/leon_open_eth/leon_open_eth.c @@ -0,0 +1,54 @@ +/* + * LEON2 Opencores Ethernet MAC Configuration Information + * + * $Id$ + */ + + +#include <bsp.h> +#include <libchip/open_eth.h> +#if (OPEN_ETH_DEBUG & OPEN_ETH_DEBUG_PRINT_REGISTERS) +#include <stdio.h> +#endif + +/* + * Default sizes of transmit and receive descriptor areas + */ +#define RDA_COUNT 16 +#define TDA_COUNT 16 + +/* + * Default location of device registers + */ +#define OPEN_ETH_BASE_ADDRESS 0xb0000000 + +/* + * Default interrupt vector + */ +#define OPEN_ETH_VECTOR 0x1C + +open_eth_configuration_t leon_open_eth_configuration = { + OPEN_ETH_BASE_ADDRESS, /* base address */ + OPEN_ETH_VECTOR, /* vector number */ + TDA_COUNT, /* number of transmit descriptors */ + RDA_COUNT, /* number of receive descriptors */ + 0 /* 100 MHz operation */ +}; + +int rtems_leon_open_eth_driver_attach(struct rtems_bsdnet_ifconfig *config) +{ + + /* clear control register and reset NIC */ + *(volatile int *) OPEN_ETH_BASE_ADDRESS = 0; + *(volatile int *) OPEN_ETH_BASE_ADDRESS = 0x800; + *(volatile int *) OPEN_ETH_BASE_ADDRESS = 0; + + /* enable 100 MHz operation only if cpu frequency >= 50 MHz */ + if (LEON_REG.Scaler_Reload >= 49) leon_open_eth_configuration.en100MHz = 1; + + if (rtems_open_eth_driver_attach( config, &leon_open_eth_configuration )) { + LEON_REG.Interrupt_Clear = (1 << (OPEN_ETH_VECTOR - 0x10)); + LEON_REG.Interrupt_Mask |= (1 << (OPEN_ETH_VECTOR - 0x10)); + } + return 0; +} |