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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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/* NOTES: * * Function 0 is an IDE controller. It is identical to a PC87415 IDE * controller (and identifies itself as such). * * Function 1 is a "Legacy I/O" controller. Under this function is a * whole mess of legacy I/O peripherals. Of course, HP hasn't enabled * all the functionality in hardware, but the following is available: * * Two 16550A compatible serial controllers * An IEEE 1284 compatible parallel port * A floppy disk controller * * Function 2 is a USB controller. * * We must be incredibly careful during initialization. Since all * interrupts are routed through function 1 (which is not allowed by * the PCI spec), we need to program the PICs on the legacy I/O port * *before* we attempt to set up IDE and USB. @#$!& * * According to HP, devices are only enabled by firmware if they have * a physical device connected. * * Configuration register bits: * 0x5A: FDC, SP1, IDE1, SP2, IDE2, PAR, Reserved, P92 * 0x5B: RTC, 8259, 8254, DMA1, DMA2, KBC, P61, APM * */
#include <linux/errno.h>#include <linux/init.h>#include <linux/module.h>#include <linux/types.h>#include <linux/interrupt.h>#include <linux/ioport.h>#include <linux/serial.h>#include <linux/pci.h>#include <linux/parport.h>#include <linux/parport_pc.h>#include <linux/termios.h>#include <linux/tty.h>#include <linux/serial_core.h>#include <linux/serial_8250.h>#include <linux/delay.h>
#include <asm/io.h>#include <asm/hardware.h>#include <asm/superio.h>
static struct superio_device sio_dev;
#undef DEBUG_SUPERIO_INIT
#ifdef DEBUG_SUPERIO_INIT#define DBG_INIT(x...) printk(x)#else#define DBG_INIT(x...)#endif
#define SUPERIO "SuperIO"#define PFX SUPERIO ": "
static irqreturn_tsuperio_interrupt(int parent_irq, void *devp){ u8 results; u8 local_irq;
/* Poll the 8259 to see if there's an interrupt. */ outb (OCW3_POLL,IC_PIC1+0);
results = inb(IC_PIC1+0);
/* * Bit 7: 1 = active Interrupt; 0 = no Interrupt pending * Bits 6-3: zero * Bits 2-0: highest priority, active requesting interrupt ID (0-7) */ if ((results & 0x80) == 0) { /* I suspect "spurious" interrupts are from unmasking an IRQ. * We don't know if an interrupt was/is pending and thus * just call the handler for that IRQ as if it were pending. */ return IRQ_NONE; }
/* Check to see which device is interrupting */ local_irq = results & 0x0f;
if (local_irq == 2 || local_irq > 7) { printk(KERN_ERR PFX "slave interrupted!\n"); return IRQ_HANDLED; }
if (local_irq == 7) {
/* Could be spurious. Check in service bits */
outb(OCW3_ISR,IC_PIC1+0); results = inb(IC_PIC1+0); if ((results & 0x80) == 0) { /* if ISR7 not set: spurious */ printk(KERN_WARNING PFX "spurious interrupt!\n"); return IRQ_HANDLED; } }
/* Call the appropriate device's interrupt */ generic_handle_irq(local_irq);
/* set EOI - forces a new interrupt if a lower priority device * still needs service. */ outb((OCW2_SEOI|local_irq),IC_PIC1 + 0); return IRQ_HANDLED;}
/* Initialize Super I/O device */static voidsuperio_init(struct pci_dev *pcidev){ struct superio_device *sio = &sio_dev; struct pci_dev *pdev = sio->lio_pdev; u16 word; int ret;
if (sio->suckyio_irq_enabled) return;
BUG_ON(!pdev); BUG_ON(!sio->usb_pdev);
/* use the IRQ iosapic found for USB INT D... */ pdev->irq = sio->usb_pdev->irq;
/* ...then properly fixup the USB to point at suckyio PIC */ sio->usb_pdev->irq = superio_fixup_irq(sio->usb_pdev);
printk(KERN_INFO PFX "Found NS87560 Legacy I/O device at %s (IRQ %i)\n", pci_name(pdev), pdev->irq);
pci_read_config_dword (pdev, SIO_SP1BAR, &sio->sp1_base); sio->sp1_base &= ~1; printk(KERN_INFO PFX "Serial port 1 at 0x%x\n", sio->sp1_base);
pci_read_config_dword (pdev, SIO_SP2BAR, &sio->sp2_base); sio->sp2_base &= ~1; printk(KERN_INFO PFX "Serial port 2 at 0x%x\n", sio->sp2_base);
pci_read_config_dword (pdev, SIO_PPBAR, &sio->pp_base); sio->pp_base &= ~1; printk(KERN_INFO PFX "Parallel port at 0x%x\n", sio->pp_base);
pci_read_config_dword (pdev, SIO_FDCBAR, &sio->fdc_base); sio->fdc_base &= ~1; printk(KERN_INFO PFX "Floppy controller at 0x%x\n", sio->fdc_base); pci_read_config_dword (pdev, SIO_ACPIBAR, &sio->acpi_base); sio->acpi_base &= ~1; printk(KERN_INFO PFX "ACPI at 0x%x\n", sio->acpi_base);
request_region (IC_PIC1, 0x1f, "pic1"); request_region (IC_PIC2, 0x1f, "pic2"); request_region (sio->acpi_base, 0x1f, "acpi");
/* Enable the legacy I/O function */ pci_read_config_word (pdev, PCI_COMMAND, &word); word |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | PCI_COMMAND_IO; pci_write_config_word (pdev, PCI_COMMAND, word);
pci_set_master (pdev); ret = pci_enable_device(pdev); BUG_ON(ret < 0); /* not too much we can do about this... */
/* * Next project is programming the onboard interrupt controllers. * PDC hasn't done this for us, since it's using polled I/O. * * XXX Use dword writes to avoid bugs in Elroy or Suckyio Config * space access. PCI is by nature a 32-bit bus and config * space can be sensitive to that. */
/* 0x64 - 0x67 : DMA Rtg 2 DMA Rtg 3 DMA Chan Ctl TRIGGER_1 == 0x82 USB & IDE level triggered, rest to edge */ pci_write_config_dword (pdev, 0x64, 0x82000000U);
/* 0x68 - 0x6b : TRIGGER_2 == 0x00 all edge triggered (not used) CFG_IR_SER == 0x43 SerPort1 = IRQ3, SerPort2 = IRQ4 CFG_IR_PF == 0x65 ParPort = IRQ5, FloppyCtlr = IRQ6 CFG_IR_IDE == 0x07 IDE1 = IRQ7, reserved */ pci_write_config_dword (pdev, TRIGGER_2, 0x07654300U);
/* 0x6c - 0x6f : CFG_IR_INTAB == 0x00 CFG_IR_INTCD == 0x10 USB = IRQ1 CFG_IR_PS2 == 0x00 CFG_IR_FXBUS == 0x00 */ pci_write_config_dword (pdev, CFG_IR_INTAB, 0x00001000U);
/* 0x70 - 0x73 : CFG_IR_USB == 0x00 not used. USB is connected to INTD. CFG_IR_ACPI == 0x00 not used. DMA Priority == 0x4c88 Power on default value. NFC. */ pci_write_config_dword (pdev, CFG_IR_USB, 0x4c880000U);
/* PIC1 Initialization Command Word register programming */ outb (0x11,IC_PIC1+0); /* ICW1: ICW4 write req | ICW1 */ outb (0x00,IC_PIC1+1); /* ICW2: interrupt vector table - not used */ outb (0x04,IC_PIC1+1); /* ICW3: Cascade */ outb (0x01,IC_PIC1+1); /* ICW4: x86 mode */
/* PIC1 Program Operational Control Words */ outb (0xff,IC_PIC1+1); /* OCW1: Mask all interrupts */ outb (0xc2,IC_PIC1+0); /* OCW2: priority (3-7,0-2) */
/* PIC2 Initialization Command Word register programming */ outb (0x11,IC_PIC2+0); /* ICW1: ICW4 write req | ICW1 */ outb (0x00,IC_PIC2+1); /* ICW2: N/A */ outb (0x02,IC_PIC2+1); /* ICW3: Slave ID code */ outb (0x01,IC_PIC2+1); /* ICW4: x86 mode */ /* Program Operational Control Words */ outb (0xff,IC_PIC1+1); /* OCW1: Mask all interrupts */ outb (0x68,IC_PIC1+0); /* OCW3: OCW3 select | ESMM | SMM */
/* Write master mask reg */ outb (0xff,IC_PIC1+1);
/* Setup USB power regulation */ outb(1, sio->acpi_base + USB_REG_CR); if (inb(sio->acpi_base + USB_REG_CR) & 1) printk(KERN_INFO PFX "USB regulator enabled\n"); else printk(KERN_ERR PFX "USB regulator not initialized!\n");
if (request_irq(pdev->irq, superio_interrupt, 0, SUPERIO, (void *)sio)) {
printk(KERN_ERR PFX "could not get irq\n"); BUG(); return; }
sio->suckyio_irq_enabled = 1;}DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO, superio_init);
static void superio_mask_irq(struct irq_data *d){ unsigned int irq = d->irq; u8 r8;
if ((irq < 1) || (irq == 2) || (irq > 7)) { printk(KERN_ERR PFX "Illegal irq number.\n"); BUG(); return; }
/* Mask interrupt */
r8 = inb(IC_PIC1+1); r8 |= (1 << irq); outb (r8,IC_PIC1+1);}
static void superio_unmask_irq(struct irq_data *d){ unsigned int irq = d->irq; u8 r8;
if ((irq < 1) || (irq == 2) || (irq > 7)) { printk(KERN_ERR PFX "Illegal irq number (%d).\n", irq); BUG(); return; }
/* Unmask interrupt */ r8 = inb(IC_PIC1+1); r8 &= ~(1 << irq); outb (r8,IC_PIC1+1);}
static struct irq_chip superio_interrupt_type = { .name = SUPERIO, .irq_unmask = superio_unmask_irq, .irq_mask = superio_mask_irq,};
#ifdef DEBUG_SUPERIO_INITstatic unsigned short expected_device[3] = { PCI_DEVICE_ID_NS_87415, PCI_DEVICE_ID_NS_87560_LIO, PCI_DEVICE_ID_NS_87560_USB};#endif
int superio_fixup_irq(struct pci_dev *pcidev){ int local_irq, i;
#ifdef DEBUG_SUPERIO_INIT int fn; fn = PCI_FUNC(pcidev->devfn);
/* Verify the function number matches the expected device id. */ if (expected_device[fn] != pcidev->device) { BUG(); return -1; } printk(KERN_DEBUG "superio_fixup_irq(%s) ven 0x%x dev 0x%x from %ps\n", pci_name(pcidev), pcidev->vendor, pcidev->device, __builtin_return_address(0));#endif
for (i = 0; i < 16; i++) { irq_set_chip_and_handler(i, &superio_interrupt_type, handle_simple_irq); }
/* * We don't allocate a SuperIO irq for the legacy IO function, * since it is a "bridge". Instead, we will allocate irq's for * each legacy device as they are initialized. */
switch(pcidev->device) { case PCI_DEVICE_ID_NS_87415: /* Function 0 */ local_irq = IDE_IRQ; break; case PCI_DEVICE_ID_NS_87560_LIO: /* Function 1 */ sio_dev.lio_pdev = pcidev; /* save for superio_init() */ return -1; case PCI_DEVICE_ID_NS_87560_USB: /* Function 2 */ sio_dev.usb_pdev = pcidev; /* save for superio_init() */ local_irq = USB_IRQ; break; default: local_irq = -1; BUG(); break; }
return local_irq;}
static void __init superio_serial_init(void){#ifdef CONFIG_SERIAL_8250 int retval; struct uart_port serial_port;
memset(&serial_port, 0, sizeof(serial_port)); serial_port.iotype = UPIO_PORT; serial_port.type = PORT_16550A; serial_port.uartclk = 115200*16; serial_port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF;
/* serial port #1 */ serial_port.iobase = sio_dev.sp1_base; serial_port.irq = SP1_IRQ; serial_port.line = 0; retval = early_serial_setup(&serial_port); if (retval < 0) { printk(KERN_WARNING PFX "Register Serial #0 failed.\n"); return; }
/* serial port #2 */ serial_port.iobase = sio_dev.sp2_base; serial_port.irq = SP2_IRQ; serial_port.line = 1; retval = early_serial_setup(&serial_port); if (retval < 0) printk(KERN_WARNING PFX "Register Serial #1 failed.\n");#endif /* CONFIG_SERIAL_8250 */}
static void __init superio_parport_init(void){#ifdef CONFIG_PARPORT_PC if (!parport_pc_probe_port(sio_dev.pp_base, 0 /*base_hi*/, PAR_IRQ, PARPORT_DMA_NONE /* dma */, NULL /*struct pci_dev* */, 0 /* shared irq flags */))
printk(KERN_WARNING PFX "Probing parallel port failed.\n");#endif /* CONFIG_PARPORT_PC */}
static void superio_fixup_pci(struct pci_dev *pdev){ u8 prog;
pdev->class |= 0x5; pci_write_config_byte(pdev, PCI_CLASS_PROG, pdev->class);
pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); printk("PCI: Enabled native mode for NS87415 (pif=0x%x)\n", prog);}DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415, superio_fixup_pci);
static int __initsuperio_probe(struct pci_dev *dev, const struct pci_device_id *id){ struct superio_device *sio = &sio_dev;
/* ** superio_probe(00:0e.0) ven 0x100b dev 0x2 sv 0x0 sd 0x0 class 0x1018a ** superio_probe(00:0e.1) ven 0x100b dev 0xe sv 0x0 sd 0x0 class 0x68000 ** superio_probe(00:0e.2) ven 0x100b dev 0x12 sv 0x0 sd 0x0 class 0xc0310 */ DBG_INIT("superio_probe(%s) ven 0x%x dev 0x%x sv 0x%x sd 0x%x class 0x%x\n", pci_name(dev), dev->vendor, dev->device, dev->subsystem_vendor, dev->subsystem_device, dev->class);
BUG_ON(!sio->suckyio_irq_enabled); /* Enabled by PCI_FIXUP_FINAL */
if (dev->device == PCI_DEVICE_ID_NS_87560_LIO) { /* Function 1 */ superio_parport_init(); superio_serial_init(); /* REVISIT XXX : superio_fdc_init() ? */ return 0; } else if (dev->device == PCI_DEVICE_ID_NS_87415) { /* Function 0 */ DBG_INIT("superio_probe: ignoring IDE 87415\n"); } else if (dev->device == PCI_DEVICE_ID_NS_87560_USB) { /* Function 2 */ DBG_INIT("superio_probe: ignoring USB OHCI controller\n"); } else { DBG_INIT("superio_probe: WTF? Fire Extinguisher?\n"); }
/* Let appropriate other driver claim this device. */ return -ENODEV;}
static const struct pci_device_id superio_tbl[] __initconst = { { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO) }, { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_USB) }, { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415) }, { 0, }};
static struct pci_driver superio_driver __refdata = { .name = SUPERIO, .id_table = superio_tbl, .probe = superio_probe,};
module_pci_driver(superio_driver);