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gc-linux-cvs
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From: Albert H. <he...@us...> - 2008-03-26 19:48:45
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Update of /cvsroot/gc-linux/linux/arch/powerpc/platforms/embedded6xx In directory sc8-pr-cvs2.sourceforge.net:/tmp/cvs-serv2492/arch/powerpc/platforms/embedded6xx Modified Files: gamecube.c Added Files: gamecube_dev.c Log Message: Updated gamecube platform to: - use flipper-pic - use device tree for configuration settings - populate platform devices from device tree instead of drivers - be more ARCH=powerpc friendly Index: gamecube.c =================================================================== RCS file: /cvsroot/gc-linux/linux/arch/powerpc/platforms/embedded6xx/gamecube.c,v retrieving revision 1.2 retrieving revision 1.3 diff -u -d -r1.2 -r1.3 --- gamecube.c 18 Mar 2008 18:57:17 -0000 1.2 +++ gamecube.c 26 Mar 2008 19:48:45 -0000 1.3 @@ -15,95 +15,34 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/irq.h> -#include <linux/initrd.h> -#include <linux/seq_file.h> #include <linux/kexec.h> +#include <linux/seq_file.h> #include <asm/io.h> -#include <asm/time.h> -#include <asm/bitops.h> #include <asm/machdep.h> -#include <asm/pgtable.h> #include <asm/prom.h> -#include <asm/lmb.h> - -#include <asm/starlet.h> - -#include "gamecube.h" -#include "ugecon.h" - -/* - * These are used in setup_arch. * - */ -#define CSR_REG ((void __iomem *)(GCN_IO1_BASE+0x500A)) -#define DSP_CSR_PIINT (1<<1) -#define DSP_CSR_AIDINT (1<<3) -#define DSP_CSR_ARINT (1<<5) -#define DSP_CSR_DSPINT (1<<7) - -#define AUDIO_DMA_LENGTH ((void __iomem *)(GCN_IO1_BASE+0x5036)) -#define AI_DCL_PLAY (1<<15) - - - -static void __init gamecube_progress(char *s, unsigned short hex) -{ -#ifdef CONFIG_USBGECKO_EARLY_CONSOLE - if (s) - ug_early_puts(s); - ug_early_puts("\n"); -#endif -} - -/* - * FIXME - * We have to get rid of these mappings and move to ioremap. - */ - -extern int map_page(unsigned long va, phys_addr_t pa, int flags); - -static void dirty_io_block_mapping(unsigned long va, phys_addr_t pa, - unsigned int size, int flags) -{ - int i; - - for (i = 0; i < size; i += PAGE_SIZE) - map_page(va + i, pa + i, flags); -} - -static void gamecube_setup_io_mappings(void) -{ -#ifdef CONFIG_GAMECUBE_DEBUG_CONSOLE - /* mapping for the debug console framebuffer */ - dirty_io_block_mapping(0xd0000000, 0, 0x02000000, _PAGE_IO); -#endif +#include <asm/time.h> +#include <asm/udbg.h> - /* access to hardware registers */ -#ifdef CONFIG_GAMECUBE_WII - dirty_io_block_mapping(0xcd000000, 0x0d000000, 0x00010000, _PAGE_IO); -#endif - dirty_io_block_mapping(0xcc000000, 0x0c000000, 0x00010000, _PAGE_IO); -} +#include "flipper-pic.h" +#include "usbgecko_udbg.h" static void gamecube_restart(char *cmd) { -#ifdef CONFIG_GAMECUBE_WII - starlet_stm_restart(); -#else local_irq_disable(); - out_8(FLIPPER_RESET, 0x00); -#endif + flipper_platform_reset(); + /* spin until power button pressed */ + for (;;) + cpu_relax(); } static void gamecube_power_off(void) { -#ifdef CONFIG_GAMECUBE_WII - starlet_stm_power_off(); - /* falldown */ -#endif local_irq_disable(); - for (;;); /* spin until power button pressed */ + /* spin until power button pressed */ + for (;;) + cpu_relax(); } static void gamecube_halt(void) @@ -111,65 +50,6 @@ gamecube_restart(NULL); } -static unsigned int gamecube_get_irq(void) -{ - int irq; - u32 irq_status; - - irq_status = in_be32(FLIPPER_ICR) & in_be32(FLIPPER_IMR); - if (irq_status == 0) - return -1; /* no more IRQs pending */ - - __asm __volatile ("cntlzw %0,%1": "=r"(irq) : "r"(irq_status)); - - return (31 - irq); -} - -static void flipper_mask_and_ack_irq(unsigned int irq) -{ - clear_bit(irq, FLIPPER_IMR); - set_bit(irq, FLIPPER_ICR); -} - -static void flipper_mask_irq(unsigned int irq) -{ - clear_bit(irq, FLIPPER_IMR); -} - -static void flipper_unmask_irq(unsigned int irq) -{ - set_bit(irq, FLIPPER_IMR); -} - -static void flipper_end_irq(unsigned int irq) -{ - if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)) - && irq_desc[irq].action) - flipper_unmask_irq(irq); -} - -static struct hw_interrupt_type flipper_pic = { - .typename = "flipper-pic", - .enable = flipper_unmask_irq, - .disable = flipper_mask_irq, - .ack = flipper_mask_and_ack_irq, - .end = flipper_end_irq, -}; - -static void gamecube_init_irq(void) -{ - int i; - - /* mask and ack all IRQs */ - out_be32(FLIPPER_IMR, 0x00000000); - out_be32(FLIPPER_ICR, 0xffffffff); - - for (i = 0; i < FLIPPER_NR_IRQS; i++) - irq_desc[i].chip = &flipper_pic; - - ppc_md.get_irq = gamecube_get_irq; -} - static void gamecube_show_cpuinfo(struct seq_file *m) { seq_printf(m, "vendor\t\t: IBM\n"); @@ -178,21 +58,11 @@ static void gamecube_setup_arch(void) { -#ifdef CONFIG_GAMECUBE_DEBUG_CONSOLE - gcn_con_init(); -#endif -#ifdef CONFIG_USBGECKO_EARLY_CONSOLE - ug_early_con_init(); -#endif +} -#if 0 - /* ack and clear the interrupts for the AI line */ - out_be16(CSR_REG, - DSP_CSR_PIINT|DSP_CSR_AIDINT|DSP_CSR_ARINT|DSP_CSR_DSPINT); - /* stop any audio */ - out_be16(AUDIO_DMA_LENGTH, - in_be16(AUDIO_DMA_LENGTH) & ~AI_DCL_PLAY); -#endif +static void __init gamecube_init_early(void) +{ + ug_udbg_init(); } static int __init gamecube_probe(void) @@ -219,19 +89,19 @@ #endif /* CONFIG_KEXEC */ - define_machine(gamecube) { .name = "gamecube", .probe = gamecube_probe, .setup_arch = gamecube_setup_arch, - .setup_io_mappings = gamecube_setup_io_mappings, + .init_early = gamecube_init_early, .show_cpuinfo = gamecube_show_cpuinfo, - .init_IRQ = gamecube_init_irq, - .calibrate_decr = generic_calibrate_decr, .restart = gamecube_restart, .power_off = gamecube_power_off, .halt = gamecube_halt, - .progress = gamecube_progress, + .init_IRQ = flipper_pic_probe, + .get_irq = flipper_pic_get_irq, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, #ifdef CONFIG_KEXEC .machine_shutdown = gamecube_shutdown, .machine_kexec_prepare = gamecube_kexec_prepare, --- NEW FILE: gamecube_dev.c --- /* * arch/powerpc/platforms/embedded6xx/gamecube_dev.c * * Nintendo GameCube platform device setup. * Copyright (C) 2008 The GameCube Linux Team * Copyright (C) 2008 Albert Herranz * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/of_platform.h> #include <asm/machdep.h> static struct of_device_id gamecube_of_bus[] = { { .compatible = "nintendo,flipper", }, { }, }; /* * */ static int __init gamecube_device_probe(void) { if (!machine_is(gamecube)) return 0; of_platform_bus_probe(NULL, gamecube_of_bus, NULL); return 0; } device_initcall(gamecube_device_probe); |
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