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MIPS: SGI-IP27: rework HUB interrupts

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This commit rearranges the HUB interrupt code by using MIPS_IRQ_CPU
interrupt handling code and modern Linux IRQ framework features to get
rid of global arrays. It also adds support for irq affinity setting.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
This commit is contained in:
Thomas Bogendoerfer
2019-02-19 16:57:20 +01:00
committed by Paul Burton
parent 2c86562047
commit 69a07a41d9
11 changed files with 266 additions and 537 deletions
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12
arch/mips/include/asm/mach-ip27/irq.h
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@@ -10,13 +10,15 @@
#ifndef __ASM_MACH_IP27_IRQ_H
#define __ASM_MACH_IP27_IRQ_H
/*
* A hardwired interrupt number is completely stupid for this system - a
* large configuration might have thousands if not tenthousands of
* interrupts.
*/
#define NR_IRQS 256
#include_next <irq.h>
#define IP27_HUB_PEND0_IRQ (MIPS_CPU_IRQ_BASE + 2)
#define IP27_HUB_PEND1_IRQ (MIPS_CPU_IRQ_BASE + 3)
#define IP27_RT_TIMER_IRQ (MIPS_CPU_IRQ_BASE + 4)
#define IP27_HUB_IRQ_BASE (MIPS_CPU_IRQ_BASE + 8)
#define IP27_HUB_IRQ_COUNT 128
#endif /* __ASM_MACH_IP27_IRQ_H */

9
arch/mips/include/asm/mach-ip27/mmzone.h
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@@ -8,20 +8,11 @@
#define pa_to_nid(addr) NASID_TO_COMPACT_NODEID(NASID_GET(addr))
#define LEVELS_PER_SLICE 128
struct slice_data {
unsigned long irq_enable_mask[2];
int level_to_irq[LEVELS_PER_SLICE];
};
struct hub_data {
kern_vars_t kern_vars;
DECLARE_BITMAP(h_bigwin_used, HUB_NUM_BIG_WINDOW);
cpumask_t h_cpus;
unsigned long slice_map;
unsigned long irq_alloc_mask[2];
struct slice_data slice[2];
};
struct node_data {

4
arch/mips/include/asm/pci/bridge.h
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@@ -808,7 +808,6 @@ struct bridge_controller {
struct bridge_regs *base;
nasid_t nasid;
unsigned int widget_id;
unsigned int irq_cpu;
u64 baddr;
unsigned int pci_int[8];
};
@@ -823,8 +822,7 @@ struct bridge_controller {
#define bridge_clr(bc, reg, val) \
__raw_writel(__raw_readl(&bc->base->reg) & ~(val), &bc->base->reg)
extern void register_bridge_irq(unsigned int irq);
extern int request_bridge_irq(struct bridge_controller *bc);
extern int request_bridge_irq(struct bridge_controller *bc, int pin);
extern struct pci_ops bridge_pci_ops;