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Add networking support for griscv bsp

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* Only GRETH device supported for now
	* Fix endian problem in GRETH driver
	* Remove SPARC assembly from greth.c
	* Builds with both autoconf and waf
This commit is contained in:
Jiri Gaisler
2020-10-24 16:43:49 +02:00
parent 7f0379c8dd
commit b4c29b54e7
8 changed files with 117 additions and 14 deletions
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2
bsps/riscv/griscv/console/console.c
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@@ -64,7 +64,7 @@ static int find_matching_apbuart(struct ambapp_dev *dev, int index, void *arg)
/* Extract needed information of one APBUART */
apbuarts[uarts].regs = (struct apbuart_regs *)apb->start;
apbuarts[uarts].irq = apb->irq;
apbuarts[uarts].irq = apb->common.irq;
/* Get APBUART core frequency, it is assumed that it is the same
* as Bus frequency where the UART is situated
*/

14
bsps/riscv/griscv/include/bsp.h
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@@ -75,6 +75,20 @@ extern void BSP_shared_interrupt_mask(int irq);
extern void BSP_shared_interrupt_clear(int irq);
extern void BSP_shared_interrupt_unmask(int irq);
/*
* Network driver configuration for greth
*/
struct rtems_bsdnet_ifconfig;
extern int rtems_griscv_greth_driver_attach(
struct rtems_bsdnet_ifconfig *config,
int attach
);
#define RTEMS_BSP_NETWORK_DRIVER_NAME "gr_eth1"
#define RTEMS_BSP_NETWORK_DRIVER_ATTACH rtems_griscv_greth_driver_attach
#define GRETH_SUPPORTED
#define CPU_U32_FIX
#ifdef __cplusplus
}
#endif

59
bsps/riscv/griscv/net/griscv_greth.c Normal file
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@@ -0,0 +1,59 @@
/*
* 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.org/license/LICENSE.
*/
#include <machine/rtems-bsd-kernel-space.h>
#include <bsp.h>
#include <amba.h>
#include <grlib/ambapp.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 griscv_greth_configuration;
int rtems_griscv_greth_driver_attach(
struct rtems_bsdnet_ifconfig *config,
int attach
)
{
unsigned int base_addr = 0; /* avoid warnings */
unsigned int eth_irq = 0; /* avoid warnings */
struct ambapp_dev *adev;
struct ambapp_apb_info *apb;
/* Scan for MAC AHB slave interface */
adev = (void *)ambapp_for_each(&ambapp_plb, (OPTIONS_ALL|OPTIONS_APB_SLVS),
VENDOR_GAISLER, GAISLER_ETHMAC,
ambapp_find_by_idx, NULL);
if (adev) {
apb = DEV_TO_APB(adev);
base_addr = apb->start;
eth_irq = apb->common.irq;
/* clear control register and reset NIC */
*(volatile int *) base_addr = 0;
*(volatile int *) base_addr = GRETH_CTRL_RST;
*(volatile int *) base_addr = 0;
griscv_greth_configuration.base_address = (void*)base_addr;
griscv_greth_configuration.vector = eth_irq; /* on LEON vector is IRQ no. */
griscv_greth_configuration.txd_count = TDA_COUNT;
griscv_greth_configuration.rxd_count = RDA_COUNT;
rtems_greth_driver_attach(config, &griscv_greth_configuration);
}
return 0;
}