| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 2382 | 83.29% | 21 | 43.75% |
| Richard Henderson | 176 | 6.15% | 3 | 6.25% |
| Linus Torvalds | 75 | 2.62% | 4 | 8.33% |
| Ivan Kokshaysky | 70 | 2.45% | 2 | 4.17% |
| Thomas Gleixner | 67 | 2.34% | 5 | 10.42% |
| Jay Estabrook | 28 | 0.98% | 1 | 2.08% |
| Andrew Morton | 20 | 0.70% | 1 | 2.08% |
| Rusty Russell | 10 | 0.35% | 1 | 2.08% |
| Yinghai Lu | 8 | 0.28% | 1 | 2.08% |
| Kyle McMartin | 5 | 0.17% | 2 | 4.17% |
| Ali Saidi | 4 | 0.14% | 1 | 2.08% |
| Adrian Bunk | 4 | 0.14% | 1 | 2.08% |
| Ralf Baechle | 4 | 0.14% | 1 | 2.08% |
| Björn Helgaas | 3 | 0.10% | 1 | 2.08% |
| Motohiro Kosaki | 2 | 0.07% | 1 | 2.08% |
| Al Viro | 1 | 0.03% | 1 | 2.08% |
| Greg Kroah-Hartman | 1 | 0.03% | 1 | 2.08% |
| Total | 2860 | 48 |
// SPDX-License-Identifier: GPL-2.0 /* * linux/arch/alpha/kernel/sys_dp264.c * * Copyright (C) 1995 David A Rusling * Copyright (C) 1996, 1999 Jay A Estabrook * Copyright (C) 1998, 1999 Richard Henderson * * Modified by Christopher C. Chimelis, 2001 to * add support for the addition of Shark to the * Tsunami family. * * Code supporting the DP264 (EV6+TSUNAMI). */ #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/dma.h> #include <asm/irq.h> #include <asm/mmu_context.h> #include <asm/io.h> #include <asm/core_tsunami.h> #include <asm/hwrpb.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 unsigned long cached_irq_mask; /* dp264 boards handle at max four CPUs */ static unsigned long cpu_irq_affinity[4] = { 0UL, 0UL, 0UL, 0UL }; DEFINE_SPINLOCK(dp264_irq_lock); static void tsunami_update_irq_hw(unsigned long mask) { register tsunami_cchip *cchip = TSUNAMI_cchip; unsigned long isa_enable = 1UL << 55; register int bcpu = boot_cpuid; #ifdef CONFIG_SMP volatile unsigned long *dim0, *dim1, *dim2, *dim3; unsigned long mask0, mask1, mask2, mask3, dummy; mask &= ~isa_enable; mask0 = mask & cpu_irq_affinity[0]; mask1 = mask & cpu_irq_affinity[1]; mask2 = mask & cpu_irq_affinity[2]; mask3 = mask & cpu_irq_affinity[3]; if (bcpu == 0) mask0 |= isa_enable; else if (bcpu == 1) mask1 |= isa_enable; else if (bcpu == 2) mask2 |= isa_enable; else mask3 |= isa_enable; dim0 = &cchip->dim0.csr; dim1 = &cchip->dim1.csr; dim2 = &cchip->dim2.csr; dim3 = &cchip->dim3.csr; if (!cpu_possible(0)) dim0 = &dummy; if (!cpu_possible(1)) dim1 = &dummy; if (!cpu_possible(2)) dim2 = &dummy; if (!cpu_possible(3)) dim3 = &dummy; *dim0 = mask0; *dim1 = mask1; *dim2 = mask2; *dim3 = mask3; mb(); *dim0; *dim1; *dim2; *dim3; #else volatile unsigned long *dimB; if (bcpu == 0) dimB = &cchip->dim0.csr; else if (bcpu == 1) dimB = &cchip->dim1.csr; else if (bcpu == 2) dimB = &cchip->dim2.csr; else dimB = &cchip->dim3.csr; *dimB = mask | isa_enable; mb(); *dimB; #endif } static void dp264_enable_irq(struct irq_data *d) { spin_lock(&dp264_irq_lock); cached_irq_mask |= 1UL << d->irq; tsunami_update_irq_hw(cached_irq_mask); spin_unlock(&dp264_irq_lock); } static void dp264_disable_irq(struct irq_data *d) { spin_lock(&dp264_irq_lock); cached_irq_mask &= ~(1UL << d->irq); tsunami_update_irq_hw(cached_irq_mask); spin_unlock(&dp264_irq_lock); } static void clipper_enable_irq(struct irq_data *d) { spin_lock(&dp264_irq_lock); cached_irq_mask |= 1UL << (d->irq - 16); tsunami_update_irq_hw(cached_irq_mask); spin_unlock(&dp264_irq_lock); } static void clipper_disable_irq(struct irq_data *d) { spin_lock(&dp264_irq_lock); cached_irq_mask &= ~(1UL << (d->irq - 16)); tsunami_update_irq_hw(cached_irq_mask); spin_unlock(&dp264_irq_lock); } static void cpu_set_irq_affinity(unsigned int irq, cpumask_t affinity) { int cpu; for (cpu = 0; cpu < 4; cpu++) { unsigned long aff = cpu_irq_affinity[cpu]; if (cpumask_test_cpu(cpu, &affinity)) aff |= 1UL << irq; else aff &= ~(1UL << irq); cpu_irq_affinity[cpu] = aff; } } static int dp264_set_affinity(struct irq_data *d, const struct cpumask *affinity, bool force) { spin_lock(&dp264_irq_lock); cpu_set_irq_affinity(d->irq, *affinity); tsunami_update_irq_hw(cached_irq_mask); spin_unlock(&dp264_irq_lock); return 0; } static int clipper_set_affinity(struct irq_data *d, const struct cpumask *affinity, bool force) { spin_lock(&dp264_irq_lock); cpu_set_irq_affinity(d->irq - 16, *affinity); tsunami_update_irq_hw(cached_irq_mask); spin_unlock(&dp264_irq_lock); return 0; } static struct irq_chip dp264_irq_type = { .name = "DP264", .irq_unmask = dp264_enable_irq, .irq_mask = dp264_disable_irq, .irq_mask_ack = dp264_disable_irq, .irq_set_affinity = dp264_set_affinity, }; static struct irq_chip clipper_irq_type = { .name = "CLIPPER", .irq_unmask = clipper_enable_irq, .irq_mask = clipper_disable_irq, .irq_mask_ack = clipper_disable_irq, .irq_set_affinity = clipper_set_affinity, }; static void dp264_device_interrupt(unsigned long vector) { unsigned long pld; unsigned int i; /* Read the interrupt summary register of TSUNAMI */ pld = TSUNAMI_cchip->dir0.csr; /* * 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 == 55) isa_device_interrupt(vector); else handle_irq(16 + i); } } static void dp264_srm_device_interrupt(unsigned long vector) { int irq; irq = (vector - 0x800) >> 4; /* * The SRM console reports PCI interrupts with a vector calculated by: * * 0x900 + (0x10 * DRIR-bit) * * So bit 16 shows up as IRQ 32, etc. * * On DP264/BRICK/MONET, we adjust it down by 16 because at least * that many of the low order bits of the DRIR are not used, and * so we don't count them. */ if (irq >= 32) irq -= 16; handle_irq(irq); } static void clipper_srm_device_interrupt(unsigned long vector) { int irq; irq = (vector - 0x800) >> 4; /* * The SRM console reports PCI interrupts with a vector calculated by: * * 0x900 + (0x10 * DRIR-bit) * * So bit 16 shows up as IRQ 32, etc. * * CLIPPER uses bits 8-47 for PCI interrupts, so we do not need * to scale down the vector reported, we just use it. * * Eg IRQ 24 is DRIR bit 8, etc, etc */ handle_irq(irq); } static void __init init_tsunami_irqs(struct irq_chip * ops, int imin, int imax) { long i; for (i = imin; i <= imax; ++i) { irq_set_chip_and_handler(i, ops, handle_level_irq); irq_set_status_flags(i, IRQ_LEVEL); } } static void __init dp264_init_irq(void) { outb(0, DMA1_RESET_REG); outb(0, DMA2_RESET_REG); outb(DMA_MODE_CASCADE, DMA2_MODE_REG); outb(0, DMA2_MASK_REG); if (alpha_using_srm) alpha_mv.device_interrupt = dp264_srm_device_interrupt; tsunami_update_irq_hw(0); init_i8259a_irqs(); init_tsunami_irqs(&dp264_irq_type, 16, 47); } static void __init clipper_init_irq(void) { outb(0, DMA1_RESET_REG); outb(0, DMA2_RESET_REG); outb(DMA_MODE_CASCADE, DMA2_MODE_REG); outb(0, DMA2_MASK_REG); if (alpha_using_srm) alpha_mv.device_interrupt = clipper_srm_device_interrupt; tsunami_update_irq_hw(0); init_i8259a_irqs(); init_tsunami_irqs(&clipper_irq_type, 24, 63); } /* * PCI Fixup configuration. * * Summary @ TSUNAMI_CSR_DIM0: * Bit Meaning * 0-17 Unused *18 Interrupt SCSI B (Adaptec 7895 builtin) *19 Interrupt SCSI A (Adaptec 7895 builtin) *20 Interrupt Line D from slot 2 PCI0 *21 Interrupt Line C from slot 2 PCI0 *22 Interrupt Line B from slot 2 PCI0 *23 Interrupt Line A from slot 2 PCI0 *24 Interrupt Line D from slot 1 PCI0 *25 Interrupt Line C from slot 1 PCI0 *26 Interrupt Line B from slot 1 PCI0 *27 Interrupt Line A from slot 1 PCI0 *28 Interrupt Line D from slot 0 PCI0 *29 Interrupt Line C from slot 0 PCI0 *30 Interrupt Line B from slot 0 PCI0 *31 Interrupt Line A from slot 0 PCI0 * *32 Interrupt Line D from slot 3 PCI1 *33 Interrupt Line C from slot 3 PCI1 *34 Interrupt Line B from slot 3 PCI1 *35 Interrupt Line A from slot 3 PCI1 *36 Interrupt Line D from slot 2 PCI1 *37 Interrupt Line C from slot 2 PCI1 *38 Interrupt Line B from slot 2 PCI1 *39 Interrupt Line A from slot 2 PCI1 *40 Interrupt Line D from slot 1 PCI1 *41 Interrupt Line C from slot 1 PCI1 *42 Interrupt Line B from slot 1 PCI1 *43 Interrupt Line A from slot 1 PCI1 *44 Interrupt Line D from slot 0 PCI1 *45 Interrupt Line C from slot 0 PCI1 *46 Interrupt Line B from slot 0 PCI1 *47 Interrupt Line A from slot 0 PCI1 *48-52 Unused *53 PCI0 NMI (from Cypress) *54 PCI0 SMI INT (from Cypress) *55 PCI0 ISA Interrupt (from Cypress) *56-60 Unused *61 PCI1 Bus Error *62 PCI0 Bus Error *63 Reserved * * IdSel * 5 Cypress Bridge I/O * 6 SCSI Adaptec builtin * 7 64 bit PCI option slot 0 (all busses) * 8 64 bit PCI option slot 1 (all busses) * 9 64 bit PCI option slot 2 (all busses) * 10 64 bit PCI option slot 3 (not bus 0) */ static int isa_irq_fixup(const struct pci_dev *dev, int irq) { u8 irq8; if (irq > 0) return irq; /* This interrupt is routed via ISA bridge, so we'll just have to trust whatever value the console might have assigned. */ pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq8); return irq8 & 0xf; } static int dp264_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { static char irq_tab[6][5] = { /*INT INTA INTB INTC INTD */ { -1, -1, -1, -1, -1}, /* IdSel 5 ISA Bridge */ { 16+ 3, 16+ 3, 16+ 2, 16+ 2, 16+ 2}, /* IdSel 6 SCSI builtin*/ { 16+15, 16+15, 16+14, 16+13, 16+12}, /* IdSel 7 slot 0 */ { 16+11, 16+11, 16+10, 16+ 9, 16+ 8}, /* IdSel 8 slot 1 */ { 16+ 7, 16+ 7, 16+ 6, 16+ 5, 16+ 4}, /* IdSel 9 slot 2 */ { 16+ 3, 16+ 3, 16+ 2, 16+ 1, 16+ 0} /* IdSel 10 slot 3 */ }; const long min_idsel = 5, max_idsel = 10, irqs_per_slot = 5; struct pci_controller *hose = dev->sysdata; int irq = COMMON_TABLE_LOOKUP; if (irq > 0) irq += 16 * hose->index; return isa_irq_fixup(dev, irq); } static int monet_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { static char irq_tab[13][5] = { /*INT INTA INTB INTC INTD */ { 45, 45, 45, 45, 45}, /* IdSel 3 21143 PCI1 */ { -1, -1, -1, -1, -1}, /* IdSel 4 unused */ { -1, -1, -1, -1, -1}, /* IdSel 5 unused */ { 47, 47, 47, 47, 47}, /* IdSel 6 SCSI PCI1 */ { -1, -1, -1, -1, -1}, /* IdSel 7 ISA Bridge */ { -1, -1, -1, -1, -1}, /* IdSel 8 P2P PCI1 */ #if 1 { 28, 28, 29, 30, 31}, /* IdSel 14 slot 4 PCI2*/ { 24, 24, 25, 26, 27}, /* IdSel 15 slot 5 PCI2*/ #else { -1, -1, -1, -1, -1}, /* IdSel 9 unused */ { -1, -1, -1, -1, -1}, /* IdSel 10 unused */ #endif { 40, 40, 41, 42, 43}, /* IdSel 11 slot 1 PCI0*/ { 36, 36, 37, 38, 39}, /* IdSel 12 slot 2 PCI0*/ { 32, 32, 33, 34, 35}, /* IdSel 13 slot 3 PCI0*/ { 28, 28, 29, 30, 31}, /* IdSel 14 slot 4 PCI2*/ { 24, 24, 25, 26, 27} /* IdSel 15 slot 5 PCI2*/ }; const long min_idsel = 3, max_idsel = 15, irqs_per_slot = 5; return isa_irq_fixup(dev, COMMON_TABLE_LOOKUP); } static u8 monet_swizzle(struct pci_dev *dev, u8 *pinp) { struct pci_controller *hose = dev->sysdata; int slot, pin = *pinp; if (!dev->bus->parent) { slot = PCI_SLOT(dev->devfn); } /* Check for the built-in bridge on hose 1. */ else if (hose->index == 1 && PCI_SLOT(dev->bus->self->devfn) == 8) { slot = PCI_SLOT(dev->devfn); } else { /* Must be a card-based bridge. */ do { /* Check for built-in bridge on hose 1. */ if (hose->index == 1 && PCI_SLOT(dev->bus->self->devfn) == 8) { slot = PCI_SLOT(dev->devfn); 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; } static int webbrick_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { static char irq_tab[13][5] = { /*INT INTA INTB INTC INTD */ { -1, -1, -1, -1, -1}, /* IdSel 7 ISA Bridge */ { -1, -1, -1, -1, -1}, /* IdSel 8 unused */ { 29, 29, 29, 29, 29}, /* IdSel 9 21143 #1 */ { -1, -1, -1, -1, -1}, /* IdSel 10 unused */ { 30, 30, 30, 30, 30}, /* IdSel 11 21143 #2 */ { -1, -1, -1, -1, -1}, /* IdSel 12 unused */ { -1, -1, -1, -1, -1}, /* IdSel 13 unused */ { 35, 35, 34, 33, 32}, /* IdSel 14 slot 0 */ { 39, 39, 38, 37, 36}, /* IdSel 15 slot 1 */ { 43, 43, 42, 41, 40}, /* IdSel 16 slot 2 */ { 47, 47, 46, 45, 44}, /* IdSel 17 slot 3 */ }; const long min_idsel = 7, max_idsel = 17, irqs_per_slot = 5; return isa_irq_fixup(dev, COMMON_TABLE_LOOKUP); } static int clipper_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { static char irq_tab[7][5] = { /*INT INTA INTB INTC INTD */ { 16+ 8, 16+ 8, 16+ 9, 16+10, 16+11}, /* IdSel 1 slot 1 */ { 16+12, 16+12, 16+13, 16+14, 16+15}, /* IdSel 2 slot 2 */ { 16+16, 16+16, 16+17, 16+18, 16+19}, /* IdSel 3 slot 3 */ { 16+20, 16+20, 16+21, 16+22, 16+23}, /* IdSel 4 slot 4 */ { 16+24, 16+24, 16+25, 16+26, 16+27}, /* IdSel 5 slot 5 */ { 16+28, 16+28, 16+29, 16+30, 16+31}, /* IdSel 6 slot 6 */ { -1, -1, -1, -1, -1} /* IdSel 7 ISA Bridge */ }; const long min_idsel = 1, max_idsel = 7, irqs_per_slot = 5; struct pci_controller *hose = dev->sysdata; int irq = COMMON_TABLE_LOOKUP; if (irq > 0) irq += 16 * hose->index; return isa_irq_fixup(dev, irq); } static void __init dp264_init_pci(void) { common_init_pci(); SMC669_Init(0); locate_and_init_vga(NULL); } static void __init monet_init_pci(void) { common_init_pci(); SMC669_Init(1); es1888_init(); locate_and_init_vga(NULL); } static void __init clipper_init_pci(void) { common_init_pci(); locate_and_init_vga(NULL); } static void __init webbrick_init_arch(void) { tsunami_init_arch(); /* Tsunami caches 4 PTEs at a time; DS10 has only 1 hose. */ hose_head->sg_isa->align_entry = 4; hose_head->sg_pci->align_entry = 4; } /* * The System Vectors */ struct alpha_machine_vector dp264_mv __initmv = { .vector_name = "DP264", DO_EV6_MMU, DO_DEFAULT_RTC, DO_TSUNAMI_IO, .machine_check = tsunami_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = DEFAULT_IO_BASE, .min_mem_address = DEFAULT_MEM_BASE, .pci_dac_offset = TSUNAMI_DAC_OFFSET, .nr_irqs = 64, .device_interrupt = dp264_device_interrupt, .init_arch = tsunami_init_arch, .init_irq = dp264_init_irq, .init_rtc = common_init_rtc, .init_pci = dp264_init_pci, .kill_arch = tsunami_kill_arch, .pci_map_irq = dp264_map_irq, .pci_swizzle = common_swizzle, }; ALIAS_MV(dp264) struct alpha_machine_vector monet_mv __initmv = { .vector_name = "Monet", DO_EV6_MMU, DO_DEFAULT_RTC, DO_TSUNAMI_IO, .machine_check = tsunami_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = DEFAULT_IO_BASE, .min_mem_address = DEFAULT_MEM_BASE, .pci_dac_offset = TSUNAMI_DAC_OFFSET, .nr_irqs = 64, .device_interrupt = dp264_device_interrupt, .init_arch = tsunami_init_arch, .init_irq = dp264_init_irq, .init_rtc = common_init_rtc, .init_pci = monet_init_pci, .kill_arch = tsunami_kill_arch, .pci_map_irq = monet_map_irq, .pci_swizzle = monet_swizzle, }; struct alpha_machine_vector webbrick_mv __initmv = { .vector_name = "Webbrick", DO_EV6_MMU, DO_DEFAULT_RTC, DO_TSUNAMI_IO, .machine_check = tsunami_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = DEFAULT_IO_BASE, .min_mem_address = DEFAULT_MEM_BASE, .pci_dac_offset = TSUNAMI_DAC_OFFSET, .nr_irqs = 64, .device_interrupt = dp264_device_interrupt, .init_arch = webbrick_init_arch, .init_irq = dp264_init_irq, .init_rtc = common_init_rtc, .init_pci = common_init_pci, .kill_arch = tsunami_kill_arch, .pci_map_irq = webbrick_map_irq, .pci_swizzle = common_swizzle, }; struct alpha_machine_vector clipper_mv __initmv = { .vector_name = "Clipper", DO_EV6_MMU, DO_DEFAULT_RTC, DO_TSUNAMI_IO, .machine_check = tsunami_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = DEFAULT_IO_BASE, .min_mem_address = DEFAULT_MEM_BASE, .pci_dac_offset = TSUNAMI_DAC_OFFSET, .nr_irqs = 64, .device_interrupt = dp264_device_interrupt, .init_arch = tsunami_init_arch, .init_irq = clipper_init_irq, .init_rtc = common_init_rtc, .init_pci = clipper_init_pci, .kill_arch = tsunami_kill_arch, .pci_map_irq = clipper_map_irq, .pci_swizzle = common_swizzle, }; /* Sharks strongly resemble Clipper, at least as far * as interrupt routing, etc, so we're using the * same functions as Clipper does */ struct alpha_machine_vector shark_mv __initmv = { .vector_name = "Shark", DO_EV6_MMU, DO_DEFAULT_RTC, DO_TSUNAMI_IO, .machine_check = tsunami_machine_check, .max_isa_dma_address = ALPHA_MAX_ISA_DMA_ADDRESS, .min_io_address = DEFAULT_IO_BASE, .min_mem_address = DEFAULT_MEM_BASE, .pci_dac_offset = TSUNAMI_DAC_OFFSET, .nr_irqs = 64, .device_interrupt = dp264_device_interrupt, .init_arch = tsunami_init_arch, .init_irq = clipper_init_irq, .init_rtc = common_init_rtc, .init_pci = common_init_pci, .kill_arch = tsunami_kill_arch, .pci_map_irq = clipper_map_irq, .pci_swizzle = common_swizzle, }; /* No alpha_mv alias for webbrick/monet/clipper, since we compile them in unconditionally with DP264; setup_arch knows how to cope. */
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