diff options
Diffstat (limited to 'arch/m68k/atari')
| -rw-r--r-- | arch/m68k/atari/ataints.c | 156 | ||||
| -rw-r--r-- | arch/m68k/atari/config.c | 253 | ||||
| -rw-r--r-- | arch/m68k/atari/debug.c | 5 | ||||
| -rw-r--r-- | arch/m68k/atari/stram.c | 71 | ||||
| -rw-r--r-- | arch/m68k/atari/time.c | 6 |
5 files changed, 464 insertions, 27 deletions
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c index 3f41092d1b7..3d2b63bedf0 100644 --- a/arch/m68k/atari/ataints.c +++ b/arch/m68k/atari/ataints.c @@ -41,6 +41,7 @@ #include <linux/init.h> #include <linux/seq_file.h> #include <linux/module.h> +#include <linux/irq.h> #include <asm/traps.h> @@ -49,6 +50,7 @@ #include <asm/atari_stdma.h> #include <asm/irq.h> #include <asm/entry.h> +#include <asm/io.h> /* @@ -122,6 +124,136 @@ static struct irq_chip atari_irq_chip = { }; /* + * ST-MFP timer D chained interrupts - each driver gets its own timer + * interrupt instance. + */ + +struct mfptimerbase { + volatile struct MFP *mfp; + unsigned char mfp_mask, mfp_data; + unsigned short int_mask; + int handler_irq, mfptimer_irq, server_irq; + char *name; +} stmfp_base = { + .mfp = &st_mfp, + .int_mask = 0x0, + .handler_irq = IRQ_MFP_TIMD, + .mfptimer_irq = IRQ_MFP_TIMER1, + .name = "MFP Timer D" +}; + +static irqreturn_t mfptimer_handler(int irq, void *dev_id) +{ + struct mfptimerbase *base = dev_id; + int mach_irq; + unsigned char ints; + + mach_irq = base->mfptimer_irq; + ints = base->int_mask; + for (; ints; mach_irq++, ints >>= 1) { + if (ints & 1) + generic_handle_irq(mach_irq); + } + return IRQ_HANDLED; +} + + +static void atari_mfptimer_enable(struct irq_data *data) +{ + int mfp_num = data->irq - IRQ_MFP_TIMER1; + stmfp_base.int_mask |= 1 << mfp_num; + atari_enable_irq(IRQ_MFP_TIMD); +} + +static void atari_mfptimer_disable(struct irq_data *data) +{ + int mfp_num = data->irq - IRQ_MFP_TIMER1; + stmfp_base.int_mask &= ~(1 << mfp_num); + if (!stmfp_base.int_mask) + atari_disable_irq(IRQ_MFP_TIMD); +} + +static struct irq_chip atari_mfptimer_chip = { + .name = "timer_d", + .irq_enable = atari_mfptimer_enable, + .irq_disable = atari_mfptimer_disable, +}; + + +/* + * EtherNAT CPLD interrupt handling + * CPLD interrupt register is at phys. 0x80000023 + * Need this mapped in at interrupt startup time + * Possibly need this mapped on demand anyway - + * EtherNAT USB driver needs to disable IRQ before + * startup! + */ + +static unsigned char *enat_cpld; + +static unsigned int atari_ethernat_startup(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + + m68k_irq_startup(data); + /* + * map CPLD interrupt register + */ + if (!enat_cpld) + enat_cpld = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0x2); + /* + * do _not_ enable the USB chip interrupt here - causes interrupt storm + * and triggers dead interrupt watchdog + * Need to reset the USB chip to a sane state in early startup before + * removing this hack + */ + if (enat_num == 1) + *enat_cpld |= 1 << enat_num; + + return 0; +} + +static void atari_ethernat_enable(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + /* + * map CPLD interrupt register + */ + if (!enat_cpld) + enat_cpld = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0x2); + *enat_cpld |= 1 << enat_num; +} + +static void atari_ethernat_disable(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + /* + * map CPLD interrupt register + */ + if (!enat_cpld) + enat_cpld = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0x2); + *enat_cpld &= ~(1 << enat_num); +} + +static void atari_ethernat_shutdown(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + if (enat_cpld) { + *enat_cpld &= ~(1 << enat_num); + iounmap(enat_cpld); + enat_cpld = NULL; + } +} + +static struct irq_chip atari_ethernat_chip = { + .name = "ethernat", + .irq_startup = atari_ethernat_startup, + .irq_shutdown = atari_ethernat_shutdown, + .irq_enable = atari_ethernat_enable, + .irq_disable = atari_ethernat_disable, +}; + +/* * void atari_init_IRQ (void) * * Parameters: None @@ -198,6 +330,30 @@ void __init atari_init_IRQ(void) /* Initialize the PSG: all sounds off, both ports output */ sound_ym.rd_data_reg_sel = 7; sound_ym.wd_data = 0xff; + + m68k_setup_irq_controller(&atari_mfptimer_chip, handle_simple_irq, + IRQ_MFP_TIMER1, 8); + + irq_set_status_flags(IRQ_MFP_TIMER1, IRQ_IS_POLLED); + irq_set_status_flags(IRQ_MFP_TIMER2, IRQ_IS_POLLED); + + /* prepare timer D data for use as poll interrupt */ + /* set Timer D data Register - needs to be > 0 */ + st_mfp.tim_dt_d = 254; /* < 100 Hz */ + /* start timer D, div = 1:100 */ + st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 0xf0) | 0x6; + + /* request timer D dispatch handler */ + if (request_irq(IRQ_MFP_TIMD, mfptimer_handler, IRQF_SHARED, + stmfp_base.name, &stmfp_base)) + pr_err("Couldn't register %s interrupt\n", stmfp_base.name); + + /* + * EtherNAT ethernet / USB interrupt handlers + */ + + m68k_setup_irq_controller(&atari_ethernat_chip, handle_simple_irq, + 139, 2); } diff --git a/arch/m68k/atari/config.c b/arch/m68k/atari/config.c index d8eb32747ac..01a62161b08 100644 --- a/arch/m68k/atari/config.c +++ b/arch/m68k/atari/config.c @@ -31,10 +31,14 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/usb/isp116x.h> #include <linux/vt_kern.h> #include <linux/module.h> #include <asm/bootinfo.h> +#include <asm/bootinfo-atari.h> +#include <asm/byteorder.h> #include <asm/setup.h> #include <asm/atarihw.h> #include <asm/atariints.h> @@ -74,7 +78,7 @@ static void atari_heartbeat(int on); /* atari specific timer functions (in time.c) */ extern void atari_sched_init(irq_handler_t); -extern unsigned long atari_gettimeoffset (void); +extern u32 atari_gettimeoffset(void); extern int atari_mste_hwclk (int, struct rtc_time *); extern int atari_tt_hwclk (int, struct rtc_time *); extern int atari_mste_set_clock_mmss (unsigned long); @@ -127,14 +131,14 @@ static int __init scc_test(volatile char *ctla) int __init atari_parse_bootinfo(const struct bi_record *record) { int unknown = 0; - const u_long *data = record->data; + const void *data = record->data; - switch (record->tag) { + switch (be16_to_cpu(record->tag)) { case BI_ATARI_MCH_COOKIE: - atari_mch_cookie = *data; + atari_mch_cookie = be32_to_cpup(data); break; case BI_ATARI_MCH_TYPE: - atari_mch_type = *data; + atari_mch_type = be32_to_cpup(data); break; default: unknown = 1; @@ -204,7 +208,7 @@ void __init config_atari(void) mach_init_IRQ = atari_init_IRQ; mach_get_model = atari_get_model; mach_get_hardware_list = atari_get_hardware_list; - mach_gettimeoffset = atari_gettimeoffset; + arch_gettimeoffset = atari_gettimeoffset; mach_reset = atari_reset; mach_max_dma_address = 0xffffff; #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE) @@ -655,3 +659,240 @@ static void atari_get_hardware_list(struct seq_file *m) ATARIHW_ANNOUNCE(VME, "VME Bus"); ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor"); } + +/* + * MSch: initial platform device support for Atari, + * required for EtherNAT/EtherNEC/NetUSBee drivers + */ + +#if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC) +static void isp1160_delay(struct device *dev, int delay) +{ + ndelay(delay); +} +#endif + +#ifdef CONFIG_ATARI_ETHERNAT +/* + * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver + */ + +#define ATARI_ETHERNAT_IRQ 140 + +static struct resource smc91x_resources[] = { + [0] = { + .name = "smc91x-regs", + .start = ATARI_ETHERNAT_PHYS_ADDR, + .end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "smc91x-irq", + .start = ATARI_ETHERNAT_IRQ, + .end = ATARI_ETHERNAT_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device smc91x_device = { + .name = "smc91x", + .id = -1, + .num_resources = ARRAY_SIZE(smc91x_resources), + .resource = smc91x_resources, +}; + +/* + * ISP 1160 - using the isp116x-hcd module + */ + +#define ATARI_USB_PHYS_ADDR 0x80000012 +#define ATARI_USB_IRQ 139 + +static struct resource isp1160_resources[] = { + [0] = { + .name = "isp1160-data", + .start = ATARI_USB_PHYS_ADDR, + .end = ATARI_USB_PHYS_ADDR + 0x1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "isp1160-regs", + .start = ATARI_USB_PHYS_ADDR + 0x4, + .end = ATARI_USB_PHYS_ADDR + 0x5, + .flags = IORESOURCE_MEM, + }, + [2] = { + .name = "isp1160-irq", + .start = ATARI_USB_IRQ, + .end = ATARI_USB_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ +static struct isp116x_platform_data isp1160_platform_data = { + /* Enable internal resistors on downstream ports */ + .sel15Kres = 1, + /* On-chip overcurrent protection */ + .oc_enable = 1, + /* INT output polarity */ + .int_act_high = 1, + /* INT edge or level triggered */ + .int_edge_triggered = 0, + + /* WAKEUP pin connected - NOT SUPPORTED */ + /* .remote_wakeup_connected = 0, */ + /* Wakeup by devices on usb bus enabled */ + .remote_wakeup_enable = 0, + .delay = isp1160_delay, +}; + +static struct platform_device isp1160_device = { + .name = "isp116x-hcd", + .id = 0, + .num_resources = ARRAY_SIZE(isp1160_resources), + .resource = isp1160_resources, + .dev = { + .platform_data = &isp1160_platform_data, + }, +}; + +static struct platform_device *atari_ethernat_devices[] __initdata = { + &smc91x_device, + &isp1160_device +}; +#endif /* CONFIG_ATARI_ETHERNAT */ + +#ifdef CONFIG_ATARI_ETHERNEC +/* + * EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset, + * handled by ne.c driver + */ + +#define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000 +#define ATARI_ETHERNEC_BASE 0x300 +#define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMER1 + +static struct resource rtl8019_resources[] = { + [0] = { + .name = "rtl8019-regs", + .start = ATARI_ETHERNEC_BASE, + .end = ATARI_ETHERNEC_BASE + 0x20 - 1, + .flags = IORESOURCE_IO, + }, + [1] = { + .name = "rtl8019-irq", + .start = ATARI_ETHERNEC_IRQ, + .end = ATARI_ETHERNEC_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device rtl8019_device = { + .name = "ne", + .id = -1, + .num_resources = ARRAY_SIZE(rtl8019_resources), + .resource = rtl8019_resources, +}; + +/* + * NetUSBee: ISP1160 USB host adapter via ROM-port adapter + */ + +#define ATARI_NETUSBEE_PHYS_ADDR 0xfffa8000 +#define ATARI_NETUSBEE_BASE 0x340 +#define ATARI_NETUSBEE_IRQ IRQ_MFP_TIMER2 + +static struct resource netusbee_resources[] = { + [0] = { + .name = "isp1160-data", + .start = ATARI_NETUSBEE_BASE, + .end = ATARI_NETUSBEE_BASE + 0x1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "isp1160-regs", + .start = ATARI_NETUSBEE_BASE + 0x20, + .end = ATARI_NETUSBEE_BASE + 0x21, + .flags = IORESOURCE_MEM, + }, + [2] = { + .name = "isp1160-irq", + .start = ATARI_NETUSBEE_IRQ, + .end = ATARI_NETUSBEE_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ +static struct isp116x_platform_data netusbee_platform_data = { + /* Enable internal resistors on downstream ports */ + .sel15Kres = 1, + /* On-chip overcurrent protection */ + .oc_enable = 1, + /* INT output polarity */ + .int_act_high = 1, + /* INT edge or level triggered */ + .int_edge_triggered = 0, + + /* WAKEUP pin connected - NOT SUPPORTED */ + /* .remote_wakeup_connected = 0, */ + /* Wakeup by devices on usb bus enabled */ + .remote_wakeup_enable = 0, + .delay = isp1160_delay, +}; + +static struct platform_device netusbee_device = { + .name = "isp116x-hcd", + .id = 1, + .num_resources = ARRAY_SIZE(netusbee_resources), + .resource = netusbee_resources, + .dev = { + .platform_data = &netusbee_platform_data, + }, +}; + +static struct platform_device *atari_netusbee_devices[] __initdata = { + &rtl8019_device, + &netusbee_device +}; +#endif /* CONFIG_ATARI_ETHERNEC */ + +int __init atari_platform_init(void) +{ + int rv = 0; + + if (!MACH_IS_ATARI) + return -ENODEV; + +#ifdef CONFIG_ATARI_ETHERNAT + { + unsigned char *enatc_virt; + enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf); + if (hwreg_present(enatc_virt)) { + rv = platform_add_devices(atari_ethernat_devices, + ARRAY_SIZE(atari_ethernat_devices)); + } + iounmap(enatc_virt); + } +#endif + +#ifdef CONFIG_ATARI_ETHERNEC + { + int error; + unsigned char *enec_virt; + enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf); + if (hwreg_present(enec_virt)) { + error = platform_add_devices(atari_netusbee_devices, + ARRAY_SIZE(atari_netusbee_devices)); + if (error && !rv) + rv = error; + } + iounmap(enec_virt); + } +#endif + + return rv; +} + +arch_initcall(atari_platform_init); diff --git a/arch/m68k/atari/debug.c b/arch/m68k/atari/debug.c index a547ba9683d..03cb5e08d7c 100644 --- a/arch/m68k/atari/debug.c +++ b/arch/m68k/atari/debug.c @@ -287,6 +287,8 @@ static void __init atari_init_midi_port(int cflag) static int __init atari_debug_setup(char *arg) { + bool registered; + if (!MACH_IS_ATARI) return 0; @@ -294,6 +296,7 @@ static int __init atari_debug_setup(char *arg) /* defaults to ser2 for a Falcon and ser1 otherwise */ arg = MACH_IS_FALCON ? "ser2" : "ser1"; + registered = !!atari_console_driver.write; if (!strcmp(arg, "ser1")) { /* ST-MFP Modem1 serial port */ atari_init_mfp_port(B9600|CS8); @@ -317,7 +320,7 @@ static int __init atari_debug_setup(char *arg) sound_ym.wd_data = sound_ym.rd_data_reg_sel | 0x20; /* strobe H */ atari_console_driver.write = atari_par_console_write; } - if (atari_console_driver.write) + if (atari_console_driver.write && !registered) register_console(&atari_console_driver); return 0; diff --git a/arch/m68k/atari/stram.c b/arch/m68k/atari/stram.c index 0810c8d56e5..5f8cb5a234d 100644 --- a/arch/m68k/atari/stram.c +++ b/arch/m68k/atari/stram.c @@ -47,6 +47,7 @@ static struct resource stram_pool = { static unsigned long pool_size = 1024*1024; +static unsigned long stram_virt_offset; static int __init atari_stram_setup(char *arg) { @@ -67,14 +68,12 @@ early_param("stram_pool", atari_stram_setup); void __init atari_stram_init(void) { int i; - void *stram_start; /* * determine whether kernel code resides in ST-RAM * (then ST-RAM is the first memory block at virtual 0x0) */ - stram_start = phys_to_virt(0); - kernel_in_stram = (stram_start == 0); + kernel_in_stram = (m68k_memory[0].addr == 0); for (i = 0; i < m68k_num_memory; ++i) { if (m68k_memory[i].addr == 0) { @@ -89,24 +88,62 @@ void __init atari_stram_init(void) /* * This function is called from setup_arch() to reserve the pages needed for - * ST-RAM management. + * ST-RAM management, if the kernel resides in ST-RAM. */ void __init atari_stram_reserve_pages(void *start_mem) { - /* - * always reserve first page of ST-RAM, the first 2 KiB are - * supervisor-only! - */ - if (!kernel_in_stram) - reserve_bootmem(0, PAGE_SIZE, BOOTMEM_DEFAULT); + if (kernel_in_stram) { + pr_debug("atari_stram pool: kernel in ST-RAM, using alloc_bootmem!\n"); + stram_pool.start = (resource_size_t)alloc_bootmem_low_pages(pool_size); + stram_pool.end = stram_pool.start + pool_size - 1; + request_resource(&iomem_resource, &stram_pool); + stram_virt_offset = 0; + pr_debug("atari_stram pool: size = %lu bytes, resource = %pR\n", + pool_size, &stram_pool); + pr_debug("atari_stram pool: stram_virt_offset = %lx\n", + stram_virt_offset); + } +} - stram_pool.start = (resource_size_t)alloc_bootmem_low_pages(pool_size); - stram_pool.end = stram_pool.start + pool_size - 1; - request_resource(&iomem_resource, &stram_pool); - pr_debug("atari_stram pool: size = %lu bytes, resource = %pR\n", - pool_size, &stram_pool); +/* + * This function is called as arch initcall to reserve the pages needed for + * ST-RAM management, if the kernel does not reside in ST-RAM. + */ +int __init atari_stram_map_pages(void) +{ + if (!kernel_in_stram) { + /* + * Skip page 0, as the fhe first 2 KiB are supervisor-only! + */ + pr_debug("atari_stram pool: kernel not in ST-RAM, using ioremap!\n"); + stram_pool.start = PAGE_SIZE; + stram_pool.end = stram_pool.start + pool_size - 1; + request_resource(&iomem_resource, &stram_pool); + stram_virt_offset = (unsigned long) ioremap(stram_pool.start, + resource_size(&stram_pool)) - stram_pool.start; + pr_debug("atari_stram pool: size = %lu bytes, resource = %pR\n", + pool_size, &stram_pool); + pr_debug("atari_stram pool: stram_virt_offset = %lx\n", + stram_virt_offset); + } + return 0; +} +arch_initcall(atari_stram_map_pages); + + +void *atari_stram_to_virt(unsigned long phys) +{ + return (void *)(phys + stram_virt_offset); +} +EXPORT_SYMBOL(atari_stram_to_virt); + + +unsigned long atari_stram_to_phys(void *virt) +{ + return (unsigned long)(virt - stram_virt_offset); } +EXPORT_SYMBOL(atari_stram_to_phys); void *atari_stram_alloc(unsigned long size, const char *owner) @@ -134,14 +171,14 @@ void *atari_stram_alloc(unsigned long size, const char *owner) } pr_debug("atari_stram_alloc: returning %pR\n", res); - return (void *)res->start; + return atari_stram_to_virt(res->start); } EXPORT_SYMBOL(atari_stram_alloc); void atari_stram_free(void *addr) { - unsigned long start = (unsigned long)addr; + unsigned long start = atari_stram_to_phys(addr); struct resource *res; unsigned long size; diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c index c0cc68a2c82..da8f981c36d 100644 --- a/arch/m68k/atari/time.c +++ b/arch/m68k/atari/time.c @@ -42,9 +42,9 @@ atari_sched_init(irq_handler_t timer_routine) #define TICK_SIZE 10000 /* This is always executed with interrupts disabled. */ -unsigned long atari_gettimeoffset (void) +u32 atari_gettimeoffset(void) { - unsigned long ticks, offset = 0; + u32 ticks, offset = 0; /* read MFP timer C current value */ ticks = st_mfp.tim_dt_c; @@ -57,7 +57,7 @@ unsigned long atari_gettimeoffset (void) ticks = INT_TICKS - ticks; ticks = ticks * 10000L / INT_TICKS; - return ticks + offset; + return (ticks + offset) * 1000; } |
