| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 1140 | 90.76% | 5 | 23.81% |
| Richard Henderson | 68 | 5.41% | 4 | 19.05% |
| Thomas Gleixner | 29 | 2.31% | 4 | 19.05% |
| Kyle McMartin | 5 | 0.40% | 2 | 9.52% |
| Adrian Bunk | 4 | 0.32% | 1 | 4.76% |
| Ivan Kokshaysky | 4 | 0.32% | 1 | 4.76% |
| Björn Helgaas | 3 | 0.24% | 1 | 4.76% |
| David Howells | 1 | 0.08% | 1 | 4.76% |
| Ralf Baechle | 1 | 0.08% | 1 | 4.76% |
| Greg Kroah-Hartman | 1 | 0.08% | 1 | 4.76% |
| Total | 1256 | 21 |
// SPDX-License-Identifier: GPL-2.0 /* * linux/arch/alpha/kernel/sys_noritake.c * * Copyright (C) 1995 David A Rusling * Copyright (C) 1996 Jay A Estabrook * Copyright (C) 1998, 1999 Richard Henderson * * Code supporting the NORITAKE (AlphaServer 1000A), * CORELLE (AlphaServer 800), and ALCOR Primo (AlphaStation 600A). */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/mm.h> #include <linux/sched.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/bitops.h> #include <asm/ptrace.h> #include <asm/mce.h> #include <asm/dma.h> #include <asm/irq.h> #include <asm/mmu_context.h> #include <asm/io.h> #include <asm/core_apecs.h> #include <asm/core_cia.h> #include <asm/tlbflush.h> #include "proto.h" #include "irq_impl.h" #include "pci_impl.h" #include "machvec_impl.h" /* Note mask bit is true for ENABLED irqs. */ static int cached_irq_mask; static inline void noritake_update_irq_hw(int irq, int mask) { int port = 0x54a; if (irq >= 32) { mask >>= 16; port = 0x54c; } outw(mask, port); } static void noritake_enable_irq(struct irq_data *d) { noritake_update_irq_hw(d->irq, cached_irq_mask |= 1 << (d->irq - 16)); } static void noritake_disable_irq(struct irq_data *d) { noritake_update_irq_hw(d->irq, cached_irq_mask &= ~(1 << (d->irq - 16))); } static struct irq_chip noritake_irq_type = { .name = "NORITAKE", .irq_unmask = noritake_enable_irq, .irq_mask = noritake_disable_irq, .irq_mask_ack = noritake_disable_irq, }; static void noritake_device_interrupt(unsigned long vector) { unsigned long pld; unsigned int i; /* Read the interrupt summary registers of NORITAKE */ pld = (((unsigned long) inw(0x54c) << 32) | ((unsigned long) inw(0x54a) << 16) | ((unsigned long) inb(0xa0) << 8) | inb(0x20)); /* * Now for every possible bit set, work through them and call * the appropriate interrupt handler. */ while (pld) { i = ffz(~pld); pld &= pld - 1; /* clear least bit set */ if (i < 16) { isa_device_interrupt(vector); } else { handle_irq(i); } } } static void noritake_srm_device_interrupt(unsigned long vector) { int irq; irq = (vector - 0x800) >> 4; /* * I really hate to do this, too, but the NORITAKE SRM console also * reports PCI vectors *lower* than I expected from the bit numbers * in the documentation. * But I really don't want to change the fixup code for allocation * of IRQs, nor the alpha_irq_mask maintenance stuff, both of which * look nice and clean now. * So, here's this additional grotty hack... :-( */ if (irq >= 16) irq = irq + 1; handle_irq(irq); } static void __init noritake_init_irq(void) { long i; if (alpha_using_srm) alpha_mv.device_interrupt = noritake_srm_device_interrupt; outw(0, 0x54a); outw(0, 0x54c); for (i = 16; i < 48; ++i) { irq_set_chip_and_handler(i, &noritake_irq_type, handle_level_irq); irq_set_status_flags(i, IRQ_LEVEL); } init_i8259a_irqs(); common_init_isa_dma(); } /* * PCI Fixup configuration. * * Summary @ 0x542, summary register #1: * Bit Meaning * 0 All valid ints from summary regs 2 & 3 * 1 QLOGIC ISP1020A SCSI * 2 Interrupt Line A from slot 0 * 3 Interrupt Line B from slot 0 * 4 Interrupt Line A from slot 1 * 5 Interrupt line B from slot 1 * 6 Interrupt Line A from slot 2 * 7 Interrupt Line B from slot 2 * 8 Interrupt Line A from slot 3 * 9 Interrupt Line B from slot 3 *10 Interrupt Line A from slot 4 *11 Interrupt Line B from slot 4 *12 Interrupt Line A from slot 5 *13 Interrupt Line B from slot 5 *14 Interrupt Line A from slot 6 *15 Interrupt Line B from slot 6 * * Summary @ 0x544, summary register #2: * Bit Meaning * 0 OR of all unmasked ints in SR #2 * 1 OR of secondary bus ints * 2 Interrupt Line C from slot 0 * 3 Interrupt Line D from slot 0 * 4 Interrupt Line C from slot 1 * 5 Interrupt line D from slot 1 * 6 Interrupt Line C from slot 2 * 7 Interrupt Line D from slot 2 * 8 Interrupt Line C from slot 3 * 9 Interrupt Line D from slot 3 *10 Interrupt Line C from slot 4 *11 Interrupt Line D from slot 4 *12 Interrupt Line C from slot 5 *13 Interrupt Line D from slot 5 *14 Interrupt Line C from slot 6 *15 Interrupt Line D from slot 6 * * The device to slot mapping looks like: * * Slot Device * 7 Intel PCI-EISA bridge chip * 8 DEC PCI-PCI bridge chip * 11 PCI on board slot 0 * 12 PCI on board slot 1 * 13 PCI on board slot 2 * * * This two layered interrupt approach means that we allocate IRQ 16 and * above for PCI interrupts. The IRQ relates to which bit the interrupt * comes in on. This makes interrupt processing much easier. */ static int noritake_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { static char irq_tab[15][5] = { /*INT INTA INTB INTC INTD */ /* note: IDSELs 16, 17, and 25 are CORELLE only */ { 16+1, 16+1, 16+1, 16+1, 16+1}, /* IdSel 16, QLOGIC */ { -1, -1, -1, -1, -1}, /* IdSel 17, S3 Trio64 */ { -1, -1, -1, -1, -1}, /* IdSel 18, PCEB */ { -1, -1, -1, -1, -1}, /* IdSel 19, PPB */ { -1, -1, -1, -1, -1}, /* IdSel 20, ???? */ { -1, -1, -1, -1, -1}, /* IdSel 21, ???? */ { 16+2, 16+2, 16+3, 32+2, 32+3}, /* IdSel 22, slot 0 */ { 16+4, 16+4, 16+5, 32+4, 32+5}, /* IdSel 23, slot 1 */ { 16+6, 16+6, 16+7, 32+6, 32+7}, /* IdSel 24, slot 2 */ { 16+8, 16+8, 16+9, 32+8, 32+9}, /* IdSel 25, slot 3 */ /* The following 5 are actually on PCI bus 1, which is across the built-in bridge of the NORITAKE only. */ { 16+1, 16+1, 16+1, 16+1, 16+1}, /* IdSel 16, QLOGIC */ { 16+8, 16+8, 16+9, 32+8, 32+9}, /* IdSel 17, slot 3 */ {16+10, 16+10, 16+11, 32+10, 32+11}, /* IdSel 18, slot 4 */ {16+12, 16+12, 16+13, 32+12, 32+13}, /* IdSel 19, slot 5 */ {16+14, 16+14, 16+15, 32+14, 32+15}, /* IdSel 20, slot 6 */ }; const long min_idsel = 5, max_idsel = 19, irqs_per_slot = 5; return COMMON_TABLE_LOOKUP; } static u8 noritake_swizzle(struct pci_dev *dev, u8 *pinp) { int slot, pin = *pinp; if (dev->bus->number == 0) { slot = PCI_SLOT(dev->devfn); } /* Check for the built-in bridge */ else if (PCI_SLOT(dev->bus->self->devfn) == 8) { slot = PCI_SLOT(dev->devfn) + 15; /* WAG! */ } else { /* Must be a card-based bridge. */ do { if (PCI_SLOT(dev->bus->self->devfn) == 8) { slot = PCI_SLOT(dev->devfn) + 15; break; } pin = pci_swizzle_interrupt_pin(dev, pin); /* Move up the chain of bridges. */ dev = dev->bus->self; /* Slot of the next bridge. */ slot = PCI_SLOT(dev->devfn); } while (dev->bus->self); } *pinp = pin; return slot; } #if defined(CONFIG_ALPHA_GENERIC) || !defined(CONFIG_ALPHA_PRIMO) static void noritake_apecs_machine_check(unsigned long vector, unsigned long la_ptr) { #define MCHK_NO_DEVSEL 0x205U #define MCHK_NO_TABT 0x204U struct el_common *mchk_header; unsigned int code; mchk_header = (struct el_common *)la_ptr; /* Clear the error before any reporting. */ mb(); mb(); /* magic */ draina(); apecs_pci_clr_err(); wrmces(0x7); mb(); code = mchk_header->code; process_mcheck_info(vector, la_ptr, "NORITAKE APECS", (mcheck_expected(0) && (code == MCHK_NO_DEVSEL || code == MCHK_NO_TABT))); } #endif /* * The System Vectors */ #if defined(CONFIG_ALPHA_GENERIC) || !defined(CONFIG_ALPHA_PRIMO) struct alpha_machine_vector noritake_mv __initmv = { .vector_name = "Noritake", DO_EV4_MMU, DO_DEFAULT_RTC, DO_APECS_IO, .machine_check = noritake_apecs_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = EISA_DEFAULT_IO_BASE, .min_mem_address = APECS_AND_LCA_DEFAULT_MEM_BASE, .nr_irqs = 48, .device_interrupt = noritake_device_interrupt, .init_arch = apecs_init_arch, .init_irq = noritake_init_irq, .init_rtc = common_init_rtc, .init_pci = common_init_pci, .pci_map_irq = noritake_map_irq, .pci_swizzle = noritake_swizzle, }; ALIAS_MV(noritake) #endif #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_PRIMO) struct alpha_machine_vector noritake_primo_mv __initmv = { .vector_name = "Noritake-Primo", DO_EV5_MMU, DO_DEFAULT_RTC, DO_CIA_IO, .machine_check = cia_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = EISA_DEFAULT_IO_BASE, .min_mem_address = CIA_DEFAULT_MEM_BASE, .nr_irqs = 48, .device_interrupt = noritake_device_interrupt, .init_arch = cia_init_arch, .init_irq = noritake_init_irq, .init_rtc = common_init_rtc, .init_pci = cia_init_pci, .kill_arch = cia_kill_arch, .pci_map_irq = noritake_map_irq, .pci_swizzle = noritake_swizzle, }; ALIAS_MV(noritake_primo) #endif
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