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-rw-r--r--arch/x86/include/asm/hw_irq.h8
-rw-r--r--arch/x86/include/asm/hypertransport.h46
-rw-r--r--arch/x86/include/asm/irqdomain.h6
-rw-r--r--arch/x86/kernel/apic/Makefile1
-rw-r--r--arch/x86/kernel/apic/htirq.c198
-rw-r--r--arch/x86/kernel/apic/vector.c5
6 files changed, 2 insertions, 262 deletions
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index b80e46733909..2851077b6051 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -99,14 +99,6 @@ struct irq_alloc_info {
void *dmar_data;
};
#endif
-#ifdef CONFIG_HT_IRQ
- struct {
- int ht_pos;
- int ht_idx;
- struct pci_dev *ht_dev;
- void *ht_update;
- };
-#endif
#ifdef CONFIG_X86_UV
struct {
int uv_limit;
diff --git a/arch/x86/include/asm/hypertransport.h b/arch/x86/include/asm/hypertransport.h
deleted file mode 100644
index 5d55df352879..000000000000
--- a/arch/x86/include/asm/hypertransport.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_X86_HYPERTRANSPORT_H
-#define _ASM_X86_HYPERTRANSPORT_H
-
-/*
- * Constants for x86 Hypertransport Interrupts.
- */
-
-#define HT_IRQ_LOW_BASE 0xf8000000
-
-#define HT_IRQ_LOW_VECTOR_SHIFT 16
-#define HT_IRQ_LOW_VECTOR_MASK 0x00ff0000
-#define HT_IRQ_LOW_VECTOR(v) \
- (((v) << HT_IRQ_LOW_VECTOR_SHIFT) & HT_IRQ_LOW_VECTOR_MASK)
-
-#define HT_IRQ_LOW_DEST_ID_SHIFT 8
-#define HT_IRQ_LOW_DEST_ID_MASK 0x0000ff00
-#define HT_IRQ_LOW_DEST_ID(v) \
- (((v) << HT_IRQ_LOW_DEST_ID_SHIFT) & HT_IRQ_LOW_DEST_ID_MASK)
-
-#define HT_IRQ_LOW_DM_PHYSICAL 0x0000000
-#define HT_IRQ_LOW_DM_LOGICAL 0x0000040
-
-#define HT_IRQ_LOW_RQEOI_EDGE 0x0000000
-#define HT_IRQ_LOW_RQEOI_LEVEL 0x0000020
-
-
-#define HT_IRQ_LOW_MT_FIXED 0x0000000
-#define HT_IRQ_LOW_MT_ARBITRATED 0x0000004
-#define HT_IRQ_LOW_MT_SMI 0x0000008
-#define HT_IRQ_LOW_MT_NMI 0x000000c
-#define HT_IRQ_LOW_MT_INIT 0x0000010
-#define HT_IRQ_LOW_MT_STARTUP 0x0000014
-#define HT_IRQ_LOW_MT_EXTINT 0x0000018
-#define HT_IRQ_LOW_MT_LINT1 0x000008c
-#define HT_IRQ_LOW_MT_LINT0 0x0000098
-
-#define HT_IRQ_LOW_IRQ_MASKED 0x0000001
-
-
-#define HT_IRQ_HIGH_DEST_ID_SHIFT 0
-#define HT_IRQ_HIGH_DEST_ID_MASK 0x00ffffff
-#define HT_IRQ_HIGH_DEST_ID(v) \
- ((((v) >> 8) << HT_IRQ_HIGH_DEST_ID_SHIFT) & HT_IRQ_HIGH_DEST_ID_MASK)
-
-#endif /* _ASM_X86_HYPERTRANSPORT_H */
diff --git a/arch/x86/include/asm/irqdomain.h b/arch/x86/include/asm/irqdomain.h
index f695cc6b8e1f..139feef467f7 100644
--- a/arch/x86/include/asm/irqdomain.h
+++ b/arch/x86/include/asm/irqdomain.h
@@ -56,10 +56,4 @@ extern void arch_init_msi_domain(struct irq_domain *domain);
static inline void arch_init_msi_domain(struct irq_domain *domain) { }
#endif
-#ifdef CONFIG_HT_IRQ
-extern void arch_init_htirq_domain(struct irq_domain *domain);
-#else
-static inline void arch_init_htirq_domain(struct irq_domain *domain) { }
-#endif
-
#endif
diff --git a/arch/x86/kernel/apic/Makefile b/arch/x86/kernel/apic/Makefile
index a9e08924927e..a6fcaf16cdbf 100644
--- a/arch/x86/kernel/apic/Makefile
+++ b/arch/x86/kernel/apic/Makefile
@@ -12,7 +12,6 @@ obj-y += hw_nmi.o
obj-$(CONFIG_X86_IO_APIC) += io_apic.o
obj-$(CONFIG_PCI_MSI) += msi.o
-obj-$(CONFIG_HT_IRQ) += htirq.o
obj-$(CONFIG_SMP) += ipi.o
ifeq ($(CONFIG_X86_64),y)
diff --git a/arch/x86/kernel/apic/htirq.c b/arch/x86/kernel/apic/htirq.c
deleted file mode 100644
index b07075dce8b7..000000000000
--- a/arch/x86/kernel/apic/htirq.c
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Support Hypertransport IRQ
- *
- * Copyright (C) 1997, 1998, 1999, 2000, 2009 Ingo Molnar, Hajnalka Szabo
- * Moved from arch/x86/kernel/apic/io_apic.c.
- * Jiang Liu <jiang.liu@linux.intel.com>
- * Add support of hierarchical irqdomain
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/htirq.h>
-#include <asm/irqdomain.h>
-#include <asm/hw_irq.h>
-#include <asm/apic.h>
-#include <asm/hypertransport.h>
-
-static struct irq_domain *htirq_domain;
-
-/*
- * Hypertransport interrupt support
- */
-static int
-ht_set_affinity(struct irq_data *data, const struct cpumask *mask, bool force)
-{
- struct irq_data *parent = data->parent_data;
- int ret;
-
- ret = parent->chip->irq_set_affinity(parent, mask, force);
- if (ret >= 0) {
- struct ht_irq_msg msg;
- struct irq_cfg *cfg = irqd_cfg(data);
-
- fetch_ht_irq_msg(data->irq, &msg);
- msg.address_lo &= ~(HT_IRQ_LOW_VECTOR_MASK |
- HT_IRQ_LOW_DEST_ID_MASK);
- msg.address_lo |= HT_IRQ_LOW_VECTOR(cfg->vector) |
- HT_IRQ_LOW_DEST_ID(cfg->dest_apicid);
- msg.address_hi &= ~(HT_IRQ_HIGH_DEST_ID_MASK);
- msg.address_hi |= HT_IRQ_HIGH_DEST_ID(cfg->dest_apicid);
- write_ht_irq_msg(data->irq, &msg);
- }
-
- return ret;
-}
-
-static struct irq_chip ht_irq_chip = {
- .name = "PCI-HT",
- .irq_mask = mask_ht_irq,
- .irq_unmask = unmask_ht_irq,
- .irq_ack = irq_chip_ack_parent,
- .irq_set_affinity = ht_set_affinity,
- .irq_retrigger = irq_chip_retrigger_hierarchy,
- .flags = IRQCHIP_SKIP_SET_WAKE,
-};
-
-static int htirq_domain_alloc(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs, void *arg)
-{
- struct ht_irq_cfg *ht_cfg;
- struct irq_alloc_info *info = arg;
- struct pci_dev *dev;
- irq_hw_number_t hwirq;
- int ret;
-
- if (nr_irqs > 1 || !info)
- return -EINVAL;
-
- dev = info->ht_dev;
- hwirq = (info->ht_idx & 0xFF) |
- PCI_DEVID(dev->bus->number, dev->devfn) << 8 |
- (pci_domain_nr(dev->bus) & 0xFFFFFFFF) << 24;
- if (irq_find_mapping(domain, hwirq) > 0)
- return -EEXIST;
-
- ht_cfg = kmalloc(sizeof(*ht_cfg), GFP_KERNEL);
- if (!ht_cfg)
- return -ENOMEM;
-
- ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, info);
- if (ret < 0) {
- kfree(ht_cfg);
- return ret;
- }
-
- /* Initialize msg to a value that will never match the first write. */
- ht_cfg->msg.address_lo = 0xffffffff;
- ht_cfg->msg.address_hi = 0xffffffff;
- ht_cfg->dev = info->ht_dev;
- ht_cfg->update = info->ht_update;
- ht_cfg->pos = info->ht_pos;
- ht_cfg->idx = 0x10 + (info->ht_idx * 2);
- irq_domain_set_info(domain, virq, hwirq, &ht_irq_chip, ht_cfg,
- handle_edge_irq, ht_cfg, "edge");
-
- return 0;
-}
-
-static void htirq_domain_free(struct irq_domain *domain, unsigned int virq,
- unsigned int nr_irqs)
-{
- struct irq_data *irq_data = irq_domain_get_irq_data(domain, virq);
-
- BUG_ON(nr_irqs != 1);
- kfree(irq_data->chip_data);
- irq_domain_free_irqs_top(domain, virq, nr_irqs);
-}
-
-static int htirq_domain_activate(struct irq_domain *domain,
- struct irq_data *irq_data, bool early)
-{
- struct ht_irq_msg msg;
- struct irq_cfg *cfg = irqd_cfg(irq_data);
-
- msg.address_hi = HT_IRQ_HIGH_DEST_ID(cfg->dest_apicid);
- msg.address_lo =
- HT_IRQ_LOW_BASE |
- HT_IRQ_LOW_DEST_ID(cfg->dest_apicid) |
- HT_IRQ_LOW_VECTOR(cfg->vector) |
- ((apic->irq_dest_mode == 0) ?
- HT_IRQ_LOW_DM_PHYSICAL :
- HT_IRQ_LOW_DM_LOGICAL) |
- HT_IRQ_LOW_RQEOI_EDGE |
- ((apic->irq_delivery_mode != dest_LowestPrio) ?
- HT_IRQ_LOW_MT_FIXED :
- HT_IRQ_LOW_MT_ARBITRATED) |
- HT_IRQ_LOW_IRQ_MASKED;
- write_ht_irq_msg(irq_data->irq, &msg);
- return 0;
-}
-
-static void htirq_domain_deactivate(struct irq_domain *domain,
- struct irq_data *irq_data)
-{
- struct ht_irq_msg msg;
-
- memset(&msg, 0, sizeof(msg));
- write_ht_irq_msg(irq_data->irq, &msg);
-}
-
-static const struct irq_domain_ops htirq_domain_ops = {
- .alloc = htirq_domain_alloc,
- .free = htirq_domain_free,
- .activate = htirq_domain_activate,
- .deactivate = htirq_domain_deactivate,
-};
-
-void __init arch_init_htirq_domain(struct irq_domain *parent)
-{
- struct fwnode_handle *fn;
-
- if (disable_apic)
- return;
-
- fn = irq_domain_alloc_named_fwnode("PCI-HT");
- if (!fn)
- goto warn;
-
- htirq_domain = irq_domain_create_tree(fn, &htirq_domain_ops, NULL);
- irq_domain_free_fwnode(fn);
- if (!htirq_domain)
- goto warn;
-
- htirq_domain->parent = parent;
- return;
-
-warn:
- pr_warn("Failed to initialize irqdomain for HTIRQ.\n");
-}
-
-int arch_setup_ht_irq(int idx, int pos, struct pci_dev *dev,
- ht_irq_update_t *update)
-{
- struct irq_alloc_info info;
-
- if (!htirq_domain)
- return -ENOSYS;
-
- init_irq_alloc_info(&info, NULL);
- info.ht_idx = idx;
- info.ht_pos = pos;
- info.ht_dev = dev;
- info.ht_update = update;
-
- return irq_domain_alloc_irqs(htirq_domain, 1, dev_to_node(&dev->dev),
- &info);
-}
-
-void arch_teardown_ht_irq(unsigned int irq)
-{
- irq_domain_free_irqs(irq, 1);
-}
diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c
index 05c85e693a5d..6a823a25eaff 100644
--- a/arch/x86/kernel/apic/vector.c
+++ b/arch/x86/kernel/apic/vector.c
@@ -1,5 +1,5 @@
/*
- * Local APIC related interfaces to support IOAPIC, MSI, HT_IRQ etc.
+ * Local APIC related interfaces to support IOAPIC, MSI, etc.
*
* Copyright (C) 1997, 1998, 1999, 2000, 2009 Ingo Molnar, Hajnalka Szabo
* Moved from arch/x86/kernel/apic/io_apic.c.
@@ -601,7 +601,7 @@ int __init arch_probe_nr_irqs(void)
nr_irqs = NR_VECTORS * nr_cpu_ids;
nr = (gsi_top + nr_legacy_irqs()) + 8 * nr_cpu_ids;
-#if defined(CONFIG_PCI_MSI) || defined(CONFIG_HT_IRQ)
+#if defined(CONFIG_PCI_MSI)
/*
* for MSI and HT dyn irq
*/
@@ -663,7 +663,6 @@ int __init arch_early_irq_init(void)
irq_set_default_host(x86_vector_domain);
arch_init_msi_domain(x86_vector_domain);
- arch_init_htirq_domain(x86_vector_domain);
BUG_ON(!alloc_cpumask_var(&vector_searchmask, GFP_KERNEL));
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 20:08:47 +0000