| Message ID | 20240729142241.733357-17-sunilvl@ventanamicro.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | RISC-V: ACPI: Add external interrupt controller support | expand |
On Mon, Jul 29, 2024 at 7:54 PM Sunil V L <sunilvl@ventanamicro.com> wrote: > > Add ACPI support in APLIC drivers. Use the mapping created early during > boot to get the details about the APLIC. > > Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> > --- > drivers/irqchip/irq-riscv-aplic-direct.c | 22 +++++--- > drivers/irqchip/irq-riscv-aplic-main.c | 69 ++++++++++++++++-------- > drivers/irqchip/irq-riscv-aplic-main.h | 1 + > drivers/irqchip/irq-riscv-aplic-msi.c | 9 +++- > 4 files changed, 69 insertions(+), 32 deletions(-) > > diff --git a/drivers/irqchip/irq-riscv-aplic-direct.c b/drivers/irqchip/irq-riscv-aplic-direct.c > index 4a3ffe856d6c..34540a0ca4da 100644 > --- a/drivers/irqchip/irq-riscv-aplic-direct.c > +++ b/drivers/irqchip/irq-riscv-aplic-direct.c > @@ -4,6 +4,7 @@ > * Copyright (C) 2022 Ventana Micro Systems Inc. > */ > > +#include <linux/acpi.h> > #include <linux/bitfield.h> > #include <linux/bitops.h> > #include <linux/cpu.h> > @@ -189,17 +190,22 @@ static int aplic_direct_starting_cpu(unsigned int cpu) > } > > static int aplic_direct_parse_parent_hwirq(struct device *dev, u32 index, > - u32 *parent_hwirq, unsigned long *parent_hartid) > + u32 *parent_hwirq, unsigned long *parent_hartid, > + struct aplic_priv *priv) > { > struct of_phandle_args parent; > + unsigned long hartid; > int rc; > > - /* > - * Currently, only OF fwnode is supported so extend this > - * function for ACPI support. > - */ > - if (!is_of_node(dev->fwnode)) > - return -EINVAL; > + if (!is_of_node(dev->fwnode)) { > + hartid = acpi_get_ext_intc_parent_hartid(priv->id, index); > + if (hartid == INVALID_HARTID) > + return -ENODEV; > + > + *parent_hartid = hartid; > + *parent_hwirq = RV_IRQ_EXT; > + return 0; > + } > > rc = of_irq_parse_one(to_of_node(dev->fwnode), index, &parent); > if (rc) > @@ -237,7 +243,7 @@ int aplic_direct_setup(struct device *dev, void __iomem *regs) > /* Setup per-CPU IDC and target CPU mask */ > current_cpu = get_cpu(); > for (i = 0; i < priv->nr_idcs; i++) { > - rc = aplic_direct_parse_parent_hwirq(dev, i, &hwirq, &hartid); > + rc = aplic_direct_parse_parent_hwirq(dev, i, &hwirq, &hartid, priv); > if (rc) { > dev_warn(dev, "parent irq for IDC%d not found\n", i); > continue; > diff --git a/drivers/irqchip/irq-riscv-aplic-main.c b/drivers/irqchip/irq-riscv-aplic-main.c > index 28dd175b5764..8357c5f9921a 100644 > --- a/drivers/irqchip/irq-riscv-aplic-main.c > +++ b/drivers/irqchip/irq-riscv-aplic-main.c > @@ -4,8 +4,10 @@ > * Copyright (C) 2022 Ventana Micro Systems Inc. > */ > > +#include <linux/acpi.h> > #include <linux/bitfield.h> > #include <linux/irqchip/riscv-aplic.h> > +#include <linux/irqchip/riscv-imsic.h> > #include <linux/module.h> > #include <linux/of.h> > #include <linux/of_irq.h> > @@ -125,39 +127,50 @@ static void aplic_init_hw_irqs(struct aplic_priv *priv) > writel(0, priv->regs + APLIC_DOMAINCFG); > } > > +#ifdef CONFIG_ACPI > +static const struct acpi_device_id aplic_acpi_match[] = { > + { "RSCV0002", 0 }, > + {} > +}; > +MODULE_DEVICE_TABLE(acpi, aplic_acpi_match); > + > +#endif > + > int aplic_setup_priv(struct aplic_priv *priv, struct device *dev, void __iomem *regs) > { > struct device_node *np = to_of_node(dev->fwnode); > struct of_phandle_args parent; > int rc; > > - /* > - * Currently, only OF fwnode is supported so extend this > - * function for ACPI support. > - */ > - if (!np) > - return -EINVAL; > - > /* Save device pointer and register base */ > priv->dev = dev; > priv->regs = regs; > > - /* Find out number of interrupt sources */ > - rc = of_property_read_u32(np, "riscv,num-sources", &priv->nr_irqs); > - if (rc) { > - dev_err(dev, "failed to get number of interrupt sources\n"); > - return rc; > - } > + if (np) { > + /* Find out number of interrupt sources */ > + rc = of_property_read_u32(np, "riscv,num-sources", &priv->nr_irqs); > + if (rc) { > + dev_err(dev, "failed to get number of interrupt sources\n"); > + return rc; > + } > > - /* > - * Find out number of IDCs based on parent interrupts > - * > - * If "msi-parent" property is present then we ignore the > - * APLIC IDCs which forces the APLIC driver to use MSI mode. > - */ > - if (!of_property_present(np, "msi-parent")) { > - while (!of_irq_parse_one(np, priv->nr_idcs, &parent)) > - priv->nr_idcs++; > + /* > + * Find out number of IDCs based on parent interrupts > + * > + * If "msi-parent" property is present then we ignore the > + * APLIC IDCs which forces the APLIC driver to use MSI mode. > + */ > + if (!of_property_present(np, "msi-parent")) { > + while (!of_irq_parse_one(np, priv->nr_idcs, &parent)) > + priv->nr_idcs++; > + } > + } else { > + rc = riscv_acpi_get_gsi_info(dev->fwnode, &priv->gsi_base, &priv->id, > + &priv->nr_irqs, &priv->nr_idcs); > + if (rc) { > + dev_err(dev, "failed to find GSI mapping\n"); > + return rc; > + } > } > > /* Setup initial state APLIC interrupts */ > @@ -184,7 +197,11 @@ static int aplic_probe(struct platform_device *pdev) > * If msi-parent property is present then setup APLIC MSI > * mode otherwise setup APLIC direct mode. > */ > - msi_mode = of_property_present(to_of_node(dev->fwnode), "msi-parent"); > + if (is_of_node(dev->fwnode)) > + msi_mode = of_property_present(to_of_node(dev->fwnode), "msi-parent"); > + else > + msi_mode = imsic_acpi_get_fwnode(NULL) ? 1 : 0; > + > if (msi_mode) > rc = aplic_msi_setup(dev, regs); > else > @@ -192,6 +209,11 @@ static int aplic_probe(struct platform_device *pdev) > if (rc) > dev_err(dev, "failed to setup APLIC in %s mode\n", msi_mode ? "MSI" : "direct"); > > +#ifdef CONFIG_ACPI > + if (!acpi_disabled) > + acpi_dev_clear_dependencies(ACPI_COMPANION(dev)); > +#endif > + > return rc; > } > > @@ -204,6 +226,7 @@ static struct platform_driver aplic_driver = { > .driver = { > .name = "riscv-aplic", > .of_match_table = aplic_match, > + .acpi_match_table = ACPI_PTR(aplic_acpi_match), > }, > .probe = aplic_probe, > }; > diff --git a/drivers/irqchip/irq-riscv-aplic-main.h b/drivers/irqchip/irq-riscv-aplic-main.h > index 4393927d8c80..9fbf45c7b4f7 100644 > --- a/drivers/irqchip/irq-riscv-aplic-main.h > +++ b/drivers/irqchip/irq-riscv-aplic-main.h > @@ -28,6 +28,7 @@ struct aplic_priv { > u32 gsi_base; > u32 nr_irqs; > u32 nr_idcs; > + u32 id; This "id" is only used for ACPI so better call it "acpi_id". > void __iomem *regs; > struct aplic_msicfg msicfg; > }; > diff --git a/drivers/irqchip/irq-riscv-aplic-msi.c b/drivers/irqchip/irq-riscv-aplic-msi.c > index 028444af48bd..f5020241e0ed 100644 > --- a/drivers/irqchip/irq-riscv-aplic-msi.c > +++ b/drivers/irqchip/irq-riscv-aplic-msi.c > @@ -157,6 +157,7 @@ static const struct msi_domain_template aplic_msi_template = { > int aplic_msi_setup(struct device *dev, void __iomem *regs) > { > const struct imsic_global_config *imsic_global; > + struct irq_domain *msi_domain; > struct aplic_priv *priv; > struct aplic_msicfg *mc; > phys_addr_t pa; > @@ -239,8 +240,14 @@ int aplic_msi_setup(struct device *dev, void __iomem *regs) > * IMSIC and the IMSIC MSI domains are created later through > * the platform driver probing so we set it explicitly here. > */ > - if (is_of_node(dev->fwnode)) > + if (is_of_node(dev->fwnode)) { > of_msi_configure(dev, to_of_node(dev->fwnode)); > + } else { > + msi_domain = irq_find_matching_fwnode(imsic_acpi_get_fwnode(dev), > + DOMAIN_BUS_PLATFORM_MSI); > + if (msi_domain) > + dev_set_msi_domain(dev, msi_domain); > + } > } > > if (!msi_create_device_irq_domain(dev, MSI_DEFAULT_DOMAIN, &aplic_msi_template, > -- > 2.43.0 > Otherwise, this looks good to me. Reviewed-by: Anup Patel <anup@brainfault.org> Regards, Anup
diff --git a/drivers/irqchip/irq-riscv-aplic-direct.c b/drivers/irqchip/irq-riscv-aplic-direct.c index 4a3ffe856d6c..34540a0ca4da 100644 --- a/drivers/irqchip/irq-riscv-aplic-direct.c +++ b/drivers/irqchip/irq-riscv-aplic-direct.c @@ -4,6 +4,7 @@ * Copyright (C) 2022 Ventana Micro Systems Inc. */ +#include <linux/acpi.h> #include <linux/bitfield.h> #include <linux/bitops.h> #include <linux/cpu.h> @@ -189,17 +190,22 @@ static int aplic_direct_starting_cpu(unsigned int cpu) } static int aplic_direct_parse_parent_hwirq(struct device *dev, u32 index, - u32 *parent_hwirq, unsigned long *parent_hartid) + u32 *parent_hwirq, unsigned long *parent_hartid, + struct aplic_priv *priv) { struct of_phandle_args parent; + unsigned long hartid; int rc; - /* - * Currently, only OF fwnode is supported so extend this - * function for ACPI support. - */ - if (!is_of_node(dev->fwnode)) - return -EINVAL; + if (!is_of_node(dev->fwnode)) { + hartid = acpi_get_ext_intc_parent_hartid(priv->id, index); + if (hartid == INVALID_HARTID) + return -ENODEV; + + *parent_hartid = hartid; + *parent_hwirq = RV_IRQ_EXT; + return 0; + } rc = of_irq_parse_one(to_of_node(dev->fwnode), index, &parent); if (rc) @@ -237,7 +243,7 @@ int aplic_direct_setup(struct device *dev, void __iomem *regs) /* Setup per-CPU IDC and target CPU mask */ current_cpu = get_cpu(); for (i = 0; i < priv->nr_idcs; i++) { - rc = aplic_direct_parse_parent_hwirq(dev, i, &hwirq, &hartid); + rc = aplic_direct_parse_parent_hwirq(dev, i, &hwirq, &hartid, priv); if (rc) { dev_warn(dev, "parent irq for IDC%d not found\n", i); continue; diff --git a/drivers/irqchip/irq-riscv-aplic-main.c b/drivers/irqchip/irq-riscv-aplic-main.c index 28dd175b5764..8357c5f9921a 100644 --- a/drivers/irqchip/irq-riscv-aplic-main.c +++ b/drivers/irqchip/irq-riscv-aplic-main.c @@ -4,8 +4,10 @@ * Copyright (C) 2022 Ventana Micro Systems Inc. */ +#include <linux/acpi.h> #include <linux/bitfield.h> #include <linux/irqchip/riscv-aplic.h> +#include <linux/irqchip/riscv-imsic.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_irq.h> @@ -125,39 +127,50 @@ static void aplic_init_hw_irqs(struct aplic_priv *priv) writel(0, priv->regs + APLIC_DOMAINCFG); } +#ifdef CONFIG_ACPI +static const struct acpi_device_id aplic_acpi_match[] = { + { "RSCV0002", 0 }, + {} +}; +MODULE_DEVICE_TABLE(acpi, aplic_acpi_match); + +#endif + int aplic_setup_priv(struct aplic_priv *priv, struct device *dev, void __iomem *regs) { struct device_node *np = to_of_node(dev->fwnode); struct of_phandle_args parent; int rc; - /* - * Currently, only OF fwnode is supported so extend this - * function for ACPI support. - */ - if (!np) - return -EINVAL; - /* Save device pointer and register base */ priv->dev = dev; priv->regs = regs; - /* Find out number of interrupt sources */ - rc = of_property_read_u32(np, "riscv,num-sources", &priv->nr_irqs); - if (rc) { - dev_err(dev, "failed to get number of interrupt sources\n"); - return rc; - } + if (np) { + /* Find out number of interrupt sources */ + rc = of_property_read_u32(np, "riscv,num-sources", &priv->nr_irqs); + if (rc) { + dev_err(dev, "failed to get number of interrupt sources\n"); + return rc; + } - /* - * Find out number of IDCs based on parent interrupts - * - * If "msi-parent" property is present then we ignore the - * APLIC IDCs which forces the APLIC driver to use MSI mode. - */ - if (!of_property_present(np, "msi-parent")) { - while (!of_irq_parse_one(np, priv->nr_idcs, &parent)) - priv->nr_idcs++; + /* + * Find out number of IDCs based on parent interrupts + * + * If "msi-parent" property is present then we ignore the + * APLIC IDCs which forces the APLIC driver to use MSI mode. + */ + if (!of_property_present(np, "msi-parent")) { + while (!of_irq_parse_one(np, priv->nr_idcs, &parent)) + priv->nr_idcs++; + } + } else { + rc = riscv_acpi_get_gsi_info(dev->fwnode, &priv->gsi_base, &priv->id, + &priv->nr_irqs, &priv->nr_idcs); + if (rc) { + dev_err(dev, "failed to find GSI mapping\n"); + return rc; + } } /* Setup initial state APLIC interrupts */ @@ -184,7 +197,11 @@ static int aplic_probe(struct platform_device *pdev) * If msi-parent property is present then setup APLIC MSI * mode otherwise setup APLIC direct mode. */ - msi_mode = of_property_present(to_of_node(dev->fwnode), "msi-parent"); + if (is_of_node(dev->fwnode)) + msi_mode = of_property_present(to_of_node(dev->fwnode), "msi-parent"); + else + msi_mode = imsic_acpi_get_fwnode(NULL) ? 1 : 0; + if (msi_mode) rc = aplic_msi_setup(dev, regs); else @@ -192,6 +209,11 @@ static int aplic_probe(struct platform_device *pdev) if (rc) dev_err(dev, "failed to setup APLIC in %s mode\n", msi_mode ? "MSI" : "direct"); +#ifdef CONFIG_ACPI + if (!acpi_disabled) + acpi_dev_clear_dependencies(ACPI_COMPANION(dev)); +#endif + return rc; } @@ -204,6 +226,7 @@ static struct platform_driver aplic_driver = { .driver = { .name = "riscv-aplic", .of_match_table = aplic_match, + .acpi_match_table = ACPI_PTR(aplic_acpi_match), }, .probe = aplic_probe, }; diff --git a/drivers/irqchip/irq-riscv-aplic-main.h b/drivers/irqchip/irq-riscv-aplic-main.h index 4393927d8c80..9fbf45c7b4f7 100644 --- a/drivers/irqchip/irq-riscv-aplic-main.h +++ b/drivers/irqchip/irq-riscv-aplic-main.h @@ -28,6 +28,7 @@ struct aplic_priv { u32 gsi_base; u32 nr_irqs; u32 nr_idcs; + u32 id; void __iomem *regs; struct aplic_msicfg msicfg; }; diff --git a/drivers/irqchip/irq-riscv-aplic-msi.c b/drivers/irqchip/irq-riscv-aplic-msi.c index 028444af48bd..f5020241e0ed 100644 --- a/drivers/irqchip/irq-riscv-aplic-msi.c +++ b/drivers/irqchip/irq-riscv-aplic-msi.c @@ -157,6 +157,7 @@ static const struct msi_domain_template aplic_msi_template = { int aplic_msi_setup(struct device *dev, void __iomem *regs) { const struct imsic_global_config *imsic_global; + struct irq_domain *msi_domain; struct aplic_priv *priv; struct aplic_msicfg *mc; phys_addr_t pa; @@ -239,8 +240,14 @@ int aplic_msi_setup(struct device *dev, void __iomem *regs) * IMSIC and the IMSIC MSI domains are created later through * the platform driver probing so we set it explicitly here. */ - if (is_of_node(dev->fwnode)) + if (is_of_node(dev->fwnode)) { of_msi_configure(dev, to_of_node(dev->fwnode)); + } else { + msi_domain = irq_find_matching_fwnode(imsic_acpi_get_fwnode(dev), + DOMAIN_BUS_PLATFORM_MSI); + if (msi_domain) + dev_set_msi_domain(dev, msi_domain); + } } if (!msi_create_device_irq_domain(dev, MSI_DEFAULT_DOMAIN, &aplic_msi_template,
Add ACPI support in APLIC drivers. Use the mapping created early during boot to get the details about the APLIC. Signed-off-by: Sunil V L <sunilvl@ventanamicro.com> --- drivers/irqchip/irq-riscv-aplic-direct.c | 22 +++++--- drivers/irqchip/irq-riscv-aplic-main.c | 69 ++++++++++++++++-------- drivers/irqchip/irq-riscv-aplic-main.h | 1 + drivers/irqchip/irq-riscv-aplic-msi.c | 9 +++- 4 files changed, 69 insertions(+), 32 deletions(-)