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irqchip/gic-v3-its: Make is_v4 use a TYPER copy 

Instead of caching the GICv4 compatibility in a discrete way, cache the
TYPER register instead, which can then be used to implement the same
functionnality. This will get used more extensively in subsequent patches.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20191027144234.8395-5-maz@kernel.org
Link: https://lore.kernel.org/r/20191108165805.3071-5-maz@kernel.org
This commit is contained in:
Marc Zyngier 2019-11-08 16:57:58 +00:00
parent 425c09be0f
commit 0dd57fed6b
1 changed files with 14 additions and 12 deletions
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26
drivers/irqchip/irq-gic-v3-its.c
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@ -102,6 +102,7 @@ struct its_node {
struct its_collection *collections;
struct fwnode_handle *fwnode_handle;
u64 (*get_msi_base)(struct its_device *its_dev);
u64 typer;
u64 cbaser_save;
u32 ctlr_save;
struct list_head its_device_list;
@ -112,10 +113,11 @@ struct its_node {
int numa_node;
unsigned int msi_domain_flags;
u32 pre_its_base; /* for Socionext Synquacer */
bool is_v4;
int vlpi_redist_offset;
};
#define is_v4(its) (!!((its)->typer & GITS_TYPER_VLPIS))
#define ITS_ITT_ALIGN SZ_256
/* The maximum number of VPEID bits supported by VLPI commands */
@ -181,7 +183,7 @@ static u16 get_its_list(struct its_vm *vm)
unsigned long its_list = 0;
list_for_each_entry(its, &its_nodes, entry) {
if (!its->is_v4)
if (!is_v4(its))
continue;
if (vm->vlpi_count[its->list_nr])
@ -1037,7 +1039,7 @@ static void its_send_vmovp(struct its_vpe *vpe)
/* Emit VMOVPs */
list_for_each_entry(its, &its_nodes, entry) {
if (!its->is_v4)
if (!is_v4(its))
continue;
if (!vpe->its_vm->vlpi_count[its->list_nr])
@ -1448,7 +1450,7 @@ static int its_irq_set_vcpu_affinity(struct irq_data *d, void *vcpu_info)
struct its_cmd_info *info = vcpu_info;
/* Need a v4 ITS */
if (!its_dev->its->is_v4)
if (!is_v4(its_dev->its))
return -EINVAL;
/* Unmap request? */
@ -2412,7 +2414,7 @@ static bool its_alloc_vpe_table(u32 vpe_id)
list_for_each_entry(its, &its_nodes, entry) {
struct its_baser *baser;
if (!its->is_v4)
if (!is_v4(its))
continue;
baser = its_get_baser(its, GITS_BASER_TYPE_VCPU);
@ -2900,7 +2902,7 @@ static void its_vpe_invall(struct its_vpe *vpe)
struct its_node *its;
list_for_each_entry(its, &its_nodes, entry) {
if (!its->is_v4)
if (!is_v4(its))
continue;
if (its_list_map && !vpe->its_vm->vlpi_count[its->list_nr])
@ -3168,7 +3170,7 @@ static int its_vpe_irq_domain_activate(struct irq_domain *domain,
vpe->col_idx = cpumask_first(cpu_online_mask);
list_for_each_entry(its, &its_nodes, entry) {
if (!its->is_v4)
if (!is_v4(its))
continue;
its_send_vmapp(its, vpe, true);
@ -3194,7 +3196,7 @@ static void its_vpe_irq_domain_deactivate(struct irq_domain *domain,
return;
list_for_each_entry(its, &its_nodes, entry) {
if (!its->is_v4)
if (!is_v4(its))
continue;
its_send_vmapp(its, vpe, false);
@ -3632,12 +3634,12 @@ static int __init its_probe_one(struct resource *res,
INIT_LIST_HEAD(&its->entry);
INIT_LIST_HEAD(&its->its_device_list);
typer = gic_read_typer(its_base + GITS_TYPER);
its->typer = typer;
its->base = its_base;
its->phys_base = res->start;
its->ite_size = GITS_TYPER_ITT_ENTRY_SIZE(typer);
its->device_ids = GITS_TYPER_DEVBITS(typer);
its->is_v4 = !!(typer & GITS_TYPER_VLPIS);
if (its->is_v4) {
if (is_v4(its)) {
if (!(typer & GITS_TYPER_VMOVP)) {
err = its_compute_its_list_map(res, its_base);
if (err < 0)
@ -3704,7 +3706,7 @@ static int __init its_probe_one(struct resource *res,
gits_write_cwriter(0, its->base + GITS_CWRITER);
ctlr = readl_relaxed(its->base + GITS_CTLR);
ctlr |= GITS_CTLR_ENABLE;
if (its->is_v4)
if (is_v4(its))
ctlr |= GITS_CTLR_ImDe;
writel_relaxed(ctlr, its->base + GITS_CTLR);
@ -4029,7 +4031,7 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists,
return err;
list_for_each_entry(its, &its_nodes, entry)
has_v4 |= its->is_v4;
has_v4 |= is_v4(its);
if (has_v4 & rdists->has_vlpis) {
if (its_init_vpe_domain() ||