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m68k/atari: EtherNAT - platform device and IRQ support code
Add platform device and interrupt definitions necessary for the EtherNAT Ethernet/USB adapter for the Falcon extension port. EtherNAT interrupt numbers are 139/140 so the max. interrupt number for Atari has to be increased. [Geert] Conditionalize platform device data structures Signed-off-by: Michael Schmitz <schmitz@debian.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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5 changed files with 86 additions and 2 deletions
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@ -55,6 +55,16 @@ config NFETH
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which will emulate a regular ethernet device while presenting an
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ethertap device to the host system.
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config ATARI_ETHERNAT
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bool "Atari EtherNAT Ethernet support"
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depends on ATARI
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---help---
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Say Y to include support for the EtherNAT network adapter for the
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CT/60 extension port.
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To compile the actual ethernet driver, choose Y or M for the SMC91X
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option in the network device section; the module will be called smc91x.
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endmenu
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menu "Character devices"
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@ -31,6 +31,7 @@
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <linux/vt_kern.h>
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#include <linux/module.h>
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@ -655,3 +656,66 @@ static void atari_get_hardware_list(struct seq_file *m)
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ATARIHW_ANNOUNCE(VME, "VME Bus");
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ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor");
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}
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/*
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* MSch: initial platform device support for Atari,
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* required for EtherNAT driver
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*/
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#ifdef CONFIG_ATARI_ETHERNAT
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/*
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* EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver
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*/
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#define ATARI_ETHERNAT_IRQ 140
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static struct resource smc91x_resources[] = {
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[0] = {
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.name = "smc91x-regs",
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.start = ATARI_ETHERNAT_PHYS_ADDR,
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.end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.name = "smc91x-irq",
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.start = ATARI_ETHERNAT_IRQ,
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.end = ATARI_ETHERNAT_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = -1,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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};
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static struct platform_device *atari_ethernat_devices[] __initdata = {
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&smc91x_device
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};
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#endif /* CONFIG_ATARI_ETHERNAT */
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int __init atari_platform_init(void)
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{
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int rv = 0;
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if (!MACH_IS_ATARI)
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return -ENODEV;
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#ifdef CONFIG_ATARI_ETHERNAT
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{
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unsigned char *enatc_virt;
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enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf);
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if (hwreg_present(enatc_virt)) {
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rv = platform_add_devices(atari_ethernat_devices,
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ARRAY_SIZE(atari_ethernat_devices));
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}
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iounmap(enatc_virt);
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}
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#endif
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return rv;
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}
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arch_initcall(atari_platform_init);
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@ -805,5 +805,11 @@ struct MSTE_RTC {
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#define mste_rtc ((*(volatile struct MSTE_RTC *)MSTE_RTC_BAS))
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/*
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** EtherNAT add-on card for Falcon - combined ethernet and USB adapter
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*/
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#define ATARI_ETHERNAT_PHYS_ADDR 0x80000000
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#endif /* linux/atarihw.h */
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@ -32,7 +32,7 @@
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#define VME_SOURCE_BASE 56
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#define VME_MAX_SOURCES 16
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#define NUM_ATARI_SOURCES (VME_SOURCE_BASE+VME_MAX_SOURCES-STMFP_SOURCE_BASE)
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#define NUM_ATARI_SOURCES 141
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/* convert vector number to int source number */
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#define IRQ_VECTOR_TO_SOURCE(v) ((v) - ((v) < 0x20 ? 0x18 : (0x40-8)))
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@ -6,12 +6,16 @@
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* different m68k hosts compiled into the kernel.
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* Currently the Atari has 72 and the Amiga 24, but if both are
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* supported in the kernel it is better to make room for 72.
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* With EtherNAT add-on card on Atari, the highest interrupt
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* number is 140 so NR_IRQS needs to be 141.
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*/
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#if defined(CONFIG_COLDFIRE)
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#define NR_IRQS 256
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#elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
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#define NR_IRQS 200
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#elif defined(CONFIG_ATARI) || defined(CONFIG_MAC)
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#elif defined(CONFIG_ATARI)
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#define NR_IRQS 141
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#elif defined(CONFIG_MAC)
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#define NR_IRQS 72
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#elif defined(CONFIG_Q40)
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#define NR_IRQS 43
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