github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-11-07 06:17:02 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

m68k: Add support for SVEthLANa

Browse Source 
The SuperVidel FPGA contains an OpenCore ethernet package. Add
platform device data and other necessary definitions to support
this device on Atari.

The ethoc module must be enabled separately by the user.

Signed-off-by: Miro Kropacek <miro.kropacek@gmail.com>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Link: https://lists.debian.org/debian-68k/2026/08/msg00000.html
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://patch.msgid.link/20260819222838.21256-6-schmitzmic@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Miro Kropacek 2026-08-20 10:28:38 +12:00 committed by Geert Uytterhoeven
parent daf59a7807
commit dd22510518
4 changed files with 91 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/m68k/Kconfig.devices
View File

@ -67,6 +67,18 @@ config ATARI_ETHERNAT
To compile the actual ethernet driver, choose Y or M for the SMC91X
option in the network device section; the module will be called smc91x.
config ATARI_SVETHLANA
bool "Atari SuperVidel SVEthLANa Ethernet support"
depends on ATARI
help
Say Y to include support for the SVEthLANa network adapter built
into the SuperVidel FPGA. SuperVidel firmware version 10 or newer
is required (older firmware lacks the Ethernet DMA).
To compile the actual ethernet driver, choose Y or M for the ETHOC
option in the network device section; the module will be called
ethoc.
config ATARI_ETHERNEC
bool "Atari EtherNEC Ethernet support"
depends on ATARI_ROM_ISA

75
arch/m68k/atari/config.c
View File

@ -34,6 +34,7 @@
#include <linux/platform_device.h>
#include <linux/usb/isp116x.h>
#include <linux/module.h>
#include <net/ethoc.h>
#include <asm/bootinfo.h>
#include <asm/bootinfo-atari.h>
@ -748,6 +749,62 @@ static struct platform_device *atari_ethernat_devices[] __initdata = {
};
#endif /* CONFIG_ATARI_ETHERNAT */
#ifdef CONFIG_ATARI_SVETHLANA
/*
* SVEthLANa: OpenCores 10/100 Mbps Ethernet MAC in the SuperVidel FPGA,
* handled by the ethoc driver. Requires SuperVidel firmware version 10
* or newer (Ethernet DMA).
*
* The MAC can only DMA within the SuperVidel DDR RAM, so the packet
* buffers are carved out of the top of the DDR; the framebuffer lives
* at the bottom.
*/
#define ATARI_SVETHLANA_PHYS_ADDR 0x80012000
#define ATARI_SVETHLANA_IRQ 141 /* vector 0xc5 */
#define ATARI_SV_VERSION_PHYS_ADDR 0x8001007c
#define ATARI_SV_DDR_END 0xa8000000
/* 128 packet buffers of 1536 bytes each, the maximum ethoc supports */
#define SVETHLANA_BUF_SIZE (128 * 1536)
static struct resource svethlana_resources[] = {
[0] = {
.name = "ethoc-regs",
.start = ATARI_SVETHLANA_PHYS_ADDR,
.end = ATARI_SVETHLANA_PHYS_ADDR + 0x7ff,
.flags = IORESOURCE_MEM,
},
[1] = {
.name = "ethoc-buf",
.start = ATARI_SV_DDR_END - SVETHLANA_BUF_SIZE,
.end = ATARI_SV_DDR_END - 1,
.flags = IORESOURCE_MEM,
},
[2] = {
.name = "ethoc-irq",
.start = ATARI_SVETHLANA_IRQ,
.end = ATARI_SVETHLANA_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct ethoc_platform_data svethlana_platform_data = {
.phy_id = -1,
.big_endian = true,
};
static struct platform_device svethlana_device = {
.name = "ethoc",
.id = -1,
.num_resources = ARRAY_SIZE(svethlana_resources),
.resource = svethlana_resources,
.dev = {
.platform_data = &svethlana_platform_data,
},
};
#endif /* CONFIG_ATARI_SVETHLANA */
#ifdef CONFIG_ATARI_ETHERNEC
/*
* EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset,
@ -892,6 +949,24 @@ static int __init atari_platform_init(void)
}
#endif
#ifdef CONFIG_ATARI_SVETHLANA
{
int error;
void __iomem *sv_version;
sv_version = ioremap(ATARI_SV_VERSION_PHYS_ADDR, 4);
if (sv_version) {
if (hwreg_present(sv_version) &&
(__raw_readl(sv_version) & 0x3ff) >= 10) {
error = platform_device_register(&svethlana_device);
if (error && !rv)
rv = error;
}
iounmap(sv_version);
}
}
#endif
#ifdef CONFIG_ATARI_ETHERNEC
{
int error;

2
arch/m68k/include/asm/atariints.h
View File

@ -32,7 +32,7 @@
#define VME_SOURCE_BASE 56
#define VME_MAX_SOURCES 16
#define NUM_ATARI_SOURCES 141
#define NUM_ATARI_SOURCES 142
/* convert vector number to int source number */
#define IRQ_VECTOR_TO_SOURCE(v) ((v) - ((v) < 0x20 ? 0x18 : (0x40-8)))

6
arch/m68k/include/asm/irq.h
View File

@ -10,8 +10,8 @@
* different m68k hosts compiled into the kernel.
* Currently the Atari has 72 and the Amiga 24, but if both are
* supported in the kernel it is better to make room for 72.
* With EtherNAT add-on card on Atari, the highest interrupt
* number is 140 so NR_IRQS needs to be 141.
* With the SVEthLANa adapter in the SuperVidel on Atari, the highest
* interrupt number is 141 so NR_IRQS needs to be 142.
*/
#if defined(CONFIG_COLDFIRE)
#define NR_IRQS 256
@ -19,7 +19,7 @@
defined(CONFIG_SUN3X) || defined(CONFIG_VIRT)
#define NR_IRQS 200
#elif defined(CONFIG_ATARI)
#define NR_IRQS 141
#define NR_IRQS 142
#elif defined(CONFIG_MAC)
#define NR_IRQS 72
#elif defined(CONFIG_Q40)