diff options
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/kernel/Makefile | 20 | ||||
| -rw-r--r-- | arch/alpha/kernel/ns87312.c | 38 | ||||
| -rw-r--r-- | arch/alpha/kernel/pc873xx.c | 88 | ||||
| -rw-r--r-- | arch/alpha/kernel/pc873xx.h | 35 | ||||
| -rw-r--r-- | arch/alpha/kernel/sys_sio.c | 23 |
5 files changed, 155 insertions, 49 deletions
diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile index 7739a62440a..5a62fb46ef2 100644 --- a/arch/alpha/kernel/Makefile +++ b/arch/alpha/kernel/Makefile @@ -35,7 +35,7 @@ endif obj-y += irq_pyxis.o irq_i8259.o irq_srm.o obj-y += err_ev6.o -obj-y += es1888.o smc37c669.o smc37c93x.o ns87312.o gct.o +obj-y += es1888.o smc37c669.o smc37c93x.o pc873xx.o gct.o obj-y += srmcons.o else @@ -63,11 +63,11 @@ obj-$(CONFIG_ALPHA_WILDFIRE) += core_wildfire.o # Board support obj-$(CONFIG_ALPHA_ALCOR) += sys_alcor.o irq_i8259.o irq_srm.o obj-$(CONFIG_ALPHA_CABRIOLET) += sys_cabriolet.o irq_i8259.o irq_srm.o \ - ns87312.o + pc873xx.o obj-$(CONFIG_ALPHA_EB164) += sys_cabriolet.o irq_i8259.o irq_srm.o \ - ns87312.o + pc873xx.o obj-$(CONFIG_ALPHA_EB66P) += sys_cabriolet.o irq_i8259.o irq_srm.o \ - ns87312.o + pc873xx.o obj-$(CONFIG_ALPHA_LX164) += sys_cabriolet.o irq_i8259.o irq_srm.o \ smc37c93x.o obj-$(CONFIG_ALPHA_PC164) += sys_cabriolet.o irq_i8259.o irq_srm.o \ @@ -90,14 +90,14 @@ obj-$(CONFIG_ALPHA_RUFFIAN) += sys_ruffian.o irq_pyxis.o irq_i8259.o obj-$(CONFIG_ALPHA_RX164) += sys_rx164.o irq_i8259.o obj-$(CONFIG_ALPHA_SABLE) += sys_sable.o obj-$(CONFIG_ALPHA_LYNX) += sys_sable.o -obj-$(CONFIG_ALPHA_BOOK1) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o -obj-$(CONFIG_ALPHA_AVANTI) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o -obj-$(CONFIG_ALPHA_NONAME) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o -obj-$(CONFIG_ALPHA_P2K) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o -obj-$(CONFIG_ALPHA_XL) += sys_sio.o irq_i8259.o irq_srm.o ns87312.o +obj-$(CONFIG_ALPHA_BOOK1) += sys_sio.o irq_i8259.o irq_srm.o pc873xx.o +obj-$(CONFIG_ALPHA_AVANTI) += sys_sio.o irq_i8259.o irq_srm.o pc873xx.o +obj-$(CONFIG_ALPHA_NONAME) += sys_sio.o irq_i8259.o irq_srm.o pc873xx.o +obj-$(CONFIG_ALPHA_P2K) += sys_sio.o irq_i8259.o irq_srm.o pc873xx.o +obj-$(CONFIG_ALPHA_XL) += sys_sio.o irq_i8259.o irq_srm.o pc873xx.o obj-$(CONFIG_ALPHA_SX164) += sys_sx164.o irq_pyxis.o irq_i8259.o \ irq_srm.o smc37c669.o -obj-$(CONFIG_ALPHA_TAKARA) += sys_takara.o irq_i8259.o ns87312.o +obj-$(CONFIG_ALPHA_TAKARA) += sys_takara.o irq_i8259.o pc873xx.o obj-$(CONFIG_ALPHA_WILDFIRE) += sys_wildfire.o irq_i8259.o # Error support diff --git a/arch/alpha/kernel/ns87312.c b/arch/alpha/kernel/ns87312.c deleted file mode 100644 index 342b56d24c2..00000000000 --- a/arch/alpha/kernel/ns87312.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - * linux/arch/alpha/kernel/ns87312.c - */ - -#include <linux/init.h> -#include <asm/io.h> -#include "proto.h" - - -/* - * The SRM console *disables* the IDE interface, this code ensures it's - * enabled. - * - * This code bangs on a control register of the 87312 Super I/O chip - * that implements parallel port/serial ports/IDE/FDI. Depending on - * the motherboard, the Super I/O chip can be configured through a - * pair of registers that are located either at I/O ports 0x26e/0x26f - * or 0x398/0x399. Unfortunately, autodetecting which base address is - * in use works only once (right after a reset). The Super I/O chip - * has the additional quirk that configuration register data must be - * written twice (I believe this is a safety feature to prevent - * accidental modification---fun, isn't it?). - */ - -void __init -ns87312_enable_ide(long ide_base) -{ - int data; - unsigned long flags; - - local_irq_save(flags); - outb(0, ide_base); /* set the index register for reg #0 */ - data = inb(ide_base+1); /* read the current contents */ - outb(0, ide_base); /* set the index register for reg #0 */ - outb(data | 0x40, ide_base+1); /* turn on IDE */ - outb(data | 0x40, ide_base+1); /* turn on IDE, really! */ - local_irq_restore(flags); -} diff --git a/arch/alpha/kernel/pc873xx.c b/arch/alpha/kernel/pc873xx.c new file mode 100644 index 00000000000..27dcbff8561 --- /dev/null +++ b/arch/alpha/kernel/pc873xx.c @@ -0,0 +1,88 @@ +#include <linux/ioport.h> +#include <asm/io.h> + +#include "pc873xx.h" + +static unsigned pc873xx_probelist[] = {0x398, 0x26e, 0}; + +static char *pc873xx_names[] = { + "PC87303", "PC87306", "PC87312", "PC87332", "PC87334" +}; + +static unsigned int base, model; + + +unsigned int __init pc873xx_get_base() +{ + return base; +} + +char *__init pc873xx_get_model() +{ + return pc873xx_names[model]; +} + +static unsigned char __init pc873xx_read(unsigned int base, int reg) +{ + outb(reg, base); + return inb(base + 1); +} + +static void __init pc873xx_write(unsigned int base, int reg, unsigned char data) +{ + unsigned long flags; + + local_irq_save(flags); + outb(reg, base); + outb(data, base + 1); + outb(data, base + 1); /* Must be written twice */ + local_irq_restore(flags); +} + +int __init pc873xx_probe(void) +{ + int val, index = 0; + + while ((base = pc873xx_probelist[index++])) { + + if (request_region(base, 2, "Super IO PC873xx") == NULL) + continue; + + val = pc873xx_read(base, REG_SID); + if ((val & 0xf0) == 0x10) { + model = PC87332; + break; + } else if ((val & 0xf8) == 0x70) { + model = PC87306; + break; + } else if ((val & 0xf8) == 0x50) { + model = PC87334; + break; + } else if ((val & 0xf8) == 0x40) { + model = PC87303; + break; + } + + release_region(base, 2); + } + + return (base == 0) ? -1 : 1; +} + +void __init pc873xx_enable_epp19(void) +{ + unsigned char data; + + printk(KERN_INFO "PC873xx enabling EPP v1.9\n"); + data = pc873xx_read(base, REG_PCR); + pc873xx_write(base, REG_PCR, (data & 0xFC) | 0x02); +} + +void __init pc873xx_enable_ide(void) +{ + unsigned char data; + + printk(KERN_INFO "PC873xx enabling IDE interrupt\n"); + data = pc873xx_read(base, REG_FER); + pc873xx_write(base, REG_FER, data | 0x40); +} diff --git a/arch/alpha/kernel/pc873xx.h b/arch/alpha/kernel/pc873xx.h new file mode 100644 index 00000000000..25e16956fe3 --- /dev/null +++ b/arch/alpha/kernel/pc873xx.h @@ -0,0 +1,35 @@ + +#ifndef _PC873xx_H_ +#define _PC873xx_H_ + +/* + * Control Register Values + */ +#define REG_FER 0x00 +#define REG_FAR 0x01 +#define REG_PTR 0x02 +#define REG_FCR 0x03 +#define REG_PCR 0x04 +#define REG_KRR 0x05 +#define REG_PMC 0x06 +#define REG_TUP 0x07 +#define REG_SID 0x08 +#define REG_ASC 0x09 +#define REG_IRC 0x0e + +/* + * Model numbers + */ +#define PC87303 0 +#define PC87306 1 +#define PC87312 2 +#define PC87332 3 +#define PC87334 4 + +int pc873xx_probe(void); +unsigned int pc873xx_get_base(void); +char *pc873xx_get_model(void); +void pc873xx_enable_epp19(void); +void pc873xx_enable_ide(void); + +#endif diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c index d4327e461c2..85b4aea01ef 100644 --- a/arch/alpha/kernel/sys_sio.c +++ b/arch/alpha/kernel/sys_sio.c @@ -34,6 +34,7 @@ #include "irq_impl.h" #include "pci_impl.h" #include "machvec_impl.h" +#include "pc873xx.h" #if defined(ALPHA_RESTORE_SRM_SETUP) /* Save LCA configuration data as the console had it set up. */ @@ -208,7 +209,27 @@ noname_init_pci(void) common_init_pci(); sio_pci_route(); sio_fixup_irq_levels(sio_collect_irq_levels()); - ns87312_enable_ide(0x26e); + + if (pc873xx_probe() == -1) { + printk(KERN_ERR "Probing for PC873xx Super IO chip failed.\n"); + } else { + printk(KERN_INFO "Found %s Super IO chip at 0x%x\n", + pc873xx_get_model(), pc873xx_get_base()); + + /* Enabling things in the Super IO chip doesn't actually + * configure and enable things, the legacy drivers still + * need to do the actual configuration and enabling. + * This only unblocks them. + */ + +#if !defined(CONFIG_ALPHA_AVANTI) + /* Don't bother on the Avanti family. + * None of them had on-board IDE. + */ + pc873xx_enable_ide(); +#endif + pc873xx_enable_epp19(); + } } static inline void __init |