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iommu/intel: Use msi_msg shadow structs

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Use the bitfields in the x86 shadow struct to compose the MSI message.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-14-dwmw2@infradead.org
This commit is contained in:
Thomas Gleixner 2020-10-24 22:35:13 +01:00
parent 6285aa5073
commit 5c0d0e2cc6
1 changed files with 16 additions and 8 deletions
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24
drivers/iommu/intel/irq_remapping.c
View file

@ -20,7 +20,6 @@
#include <asm/cpu.h>
#include <asm/irq_remapping.h>
#include <asm/pci-direct.h>
#include <asm/msidef.h>
#include "../irq_remapping.h"
@ -1260,6 +1259,21 @@ static struct irq_chip intel_ir_chip = {
.irq_set_vcpu_affinity = intel_ir_set_vcpu_affinity,
};
static void fill_msi_msg(struct msi_msg *msg, u32 index, u32 subhandle)
{
memset(msg, 0, sizeof(*msg));
msg->arch_addr_lo.dmar_base_address = X86_MSI_BASE_ADDRESS_LOW;
msg->arch_addr_lo.dmar_subhandle_valid = true;
msg->arch_addr_lo.dmar_format = true;
msg->arch_addr_lo.dmar_index_0_14 = index & 0x7FFF;
msg->arch_addr_lo.dmar_index_15 = !!(index & 0x8000);
msg->address_hi = X86_MSI_BASE_ADDRESS_HIGH;
msg->arch_data.dmar_subhandle = subhandle;
}
static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data,
struct irq_cfg *irq_cfg,
struct irq_alloc_info *info,
@ -1267,7 +1281,6 @@ static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data,
{
struct IR_IO_APIC_route_entry *entry;
struct irte *irte = &data->irte_entry;
struct msi_msg *msg = &data->msi_entry;
prepare_irte(irte, irq_cfg->vector, irq_cfg->dest_apicid);
switch (info->type) {
@ -1308,12 +1321,7 @@ static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data,
else
set_msi_sid(irte, msi_desc_to_pci_dev(info->desc));
msg->address_hi = MSI_ADDR_BASE_HI;
msg->data = sub_handle;
msg->address_lo = MSI_ADDR_BASE_LO | MSI_ADDR_IR_EXT_INT |
MSI_ADDR_IR_SHV |
MSI_ADDR_IR_INDEX1(index) |
MSI_ADDR_IR_INDEX2(index);
fill_msi_msg(&data->msi_entry, index, sub_handle);
break;
default: