diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/leon3/leon_greth/leon_greth.c')
-rw-r--r-- | c/src/lib/libbsp/sparc/leon3/leon_greth/leon_greth.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/leon_greth/leon_greth.c b/c/src/lib/libbsp/sparc/leon3/leon_greth/leon_greth.c new file mode 100644 index 0000000000..29684ebae7 --- /dev/null +++ b/c/src/lib/libbsp/sparc/leon3/leon_greth/leon_greth.c @@ -0,0 +1,71 @@ +/* + * LEON3 Opencores Ethernet MAC Configuration Information + * + * COPYRIGHT (c) 2004. + * Gaisler Research + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * leon_open_eth.c,v 1.1.2.1 2005/10/05 19:26:00 joel Exp + */ + + +#include <bsp.h> +#include <libchip/greth.h> +/*#if (GRETH_DEBUG & GRETH_DEBUG_PRINT_REGISTERS)*/ +#include <stdio.h> +/*#endif*/ + +/* + * Default sizes of transmit and receive descriptor areas + */ +#define RDA_COUNT 32 +#define TDA_COUNT 32 + +greth_configuration_t leon_greth_configuration; + +int rtems_leon_greth_driver_attach( + struct rtems_bsdnet_ifconfig *config, + int attach +) +{ + int device_found = 0; + int i; + unsigned int conf, iobar; + unsigned int base_addr = 0; /* avoid warnings */ + unsigned int eth_irq = 0; /* avoid warnings */ + + /* Scan for MAC AHB slave interface */ + for (i = 0; i < amba_conf.apbslv.devnr; i++) + { + conf = amba_get_confword(amba_conf.apbslv, i, 0); + if ((amba_vendor(conf) == VENDOR_GAISLER) && + (amba_device(conf) == GAISLER_ETHMAC)) + { + iobar = amba_apb_get_membar(amba_conf.apbslv, i); + base_addr = amba_iobar_start(amba_conf.apbmst, iobar); + eth_irq = amba_irq(conf) + 0x10; + device_found = 1; + break; + } + } + + if (device_found) + { + /* clear control register and reset NIC */ + *(volatile int *) base_addr = 0; + *(volatile int *) base_addr = GRETH_CTRL_RST; + *(volatile int *) base_addr = 0; + leon_greth_configuration.base_address = base_addr; + leon_greth_configuration.vector = eth_irq; + leon_greth_configuration.txd_count = TDA_COUNT; + leon_greth_configuration.rxd_count = RDA_COUNT; + if (rtems_greth_driver_attach( config, &leon_greth_configuration )) { + LEON_Clear_interrupt(leon_greth_configuration.vector); + LEON_Unmask_interrupt(leon_greth_configuration.vector); + } + } + return 0; +} |