From: Markus Stockhausen Date: Mon, 9 Sep 2024 05:45:20 +0000 (-0400) Subject: realtek: 6.6: rework VPE patches X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1eac02b60d73ed3082866a84750938ca2040aa4c;p=openwrt%2Fstaging%2Fxback.git realtek: 6.6: rework VPE patches VPE in mainline kernel has changed a lot. This patch wraps up the 5.15 patch files and rebases them in one single patch on top of kernel 6.6. Former patches are 315-irqchip-irq-realtek-rtl-add-VPE-support.patch 319-irqchip-irq-realtek-rtl-fix-VPE-affinity.patch Submitted-by: Birger Koblitz Submitted-by: INAGAKI Hiroshi Signed-off-by: Markus Stockhausen --- diff --git a/target/linux/realtek/patches-6.6/314-irqchip-irq-realtek-rtl-add-VPE-support.patch b/target/linux/realtek/patches-6.6/314-irqchip-irq-realtek-rtl-add-VPE-support.patch new file mode 100644 index 0000000000..4610ca8c19 --- /dev/null +++ b/target/linux/realtek/patches-6.6/314-irqchip-irq-realtek-rtl-add-VPE-support.patch @@ -0,0 +1,427 @@ +From 6c18e9c491959ac0674ebe36b09f9ddc3f2c9bce Mon Sep 17 00:00:00 2001 +From: Birger Koblitz +Date: Fri, 31 Dec 2021 11:56:49 +0100 +Subject: [PATCH] realtek: Add VPE support for the IRQ driver + +In order to support VSMP, enable support for both VPEs of the RTL839X +and RTL930X SoCs in the irq-realtek-rtl driver. Add support for IRQ +affinity setting. + +Up to kernel 5.15 this patch was divided into two parts + +315-irqchip-irq-realtek-rtl-add-VPE-support.patch +319-irqchip-irq-realtek-rtl-fix-VPE-affinity.patch + +As both parts will only work in combination they have been merged into +one patch. + +Submitted-by: Birger Koblitz +Submitted-by: INAGAKI Hiroshi +Signed-off-by: Markus Stockhausen +--- + drivers/irqchip/irq-realtek-rtl.c | 296 +++++++++++++++++++++++++----- + 1 file changed, 249 insertions(+), 47 deletions(-) + +--- a/drivers/irqchip/irq-realtek-rtl.c ++++ b/drivers/irqchip/irq-realtek-rtl.c +@@ -22,22 +22,58 @@ + #define RTL_ICTL_IRR3 0x14 + + #define RTL_ICTL_NUM_INPUTS 32 +- +-#define REG(x) (realtek_ictl_base + x) ++#define RTL_ICTL_NUM_OUTPUTS 15 + + static DEFINE_RAW_SPINLOCK(irq_lock); +-static void __iomem *realtek_ictl_base; ++ ++#define REG(offset, cpu) (realtek_ictl_base[cpu] + offset) ++ ++static u32 realtek_ictl_unmask[NR_CPUS]; ++static void __iomem *realtek_ictl_base[NR_CPUS]; ++static cpumask_t realtek_ictl_cpu_configurable; ++ ++struct realtek_ictl_output { ++ /* IRQ controller data */ ++ struct fwnode_handle *fwnode; ++ /* Output specific data */ ++ unsigned int output_index; ++ struct irq_domain *domain; ++ u32 child_mask; ++}; + + /* +- * IRR0-IRR3 store 4 bits per interrupt, but Realtek uses inverted numbering, +- * placing IRQ 31 in the first four bits. A routing value of '0' means the +- * interrupt is left disconnected. Routing values {1..15} connect to output +- * lines {0..14}. ++ * Per CPU we have a set of 5 registers that determine interrupt handling for ++ * 32 external interrupts. GIMR (enable/disable interrupt) plus IRR0-IRR3 that ++ * contain "routing" or "priority" values. GIMR uses one bit for each interrupt ++ * and IRRx store 4 bits per interrupt. Realtek uses inverted numbering, ++ * placing IRQ 31 in the first four bits. The register combinations give the ++ * following results for a single interrupt in the wild: ++ * ++ * a) GIMR = 0 / IRRx > 0 -> no interrupts ++ * b) GIMR = 0 / IRRx = 0 -> no interrupts ++ * c) GIMR = 1 / IRRx > 0 -> interrupts ++ * d) GIMR = 1 / IRRx = 0 -> rare interrupts in SMP environment ++ * ++ * Combination d) seems to trigger interrupts only on a VPE if the other VPE ++ * has GIMR = 0 and IRRx > 0. E.g. busy without interrupts allowed. To provide ++ * IRQ balancing features in SMP this driver will handle the registers as ++ * follows: ++ * ++ * 1) set IRRx > 0 for VPE where the interrupt is desired ++ * 2) set IRRx = 0 for VPE where the interrupt is not desired ++ * 3) set both GIMR = 0 to mask (disabled) interrupt ++ * 4) set GIMR = 1 to unmask (enable) interrupt but only for VPE where IRRx > 0 + */ ++ + #define IRR_OFFSET(idx) (4 * (3 - (idx * 4) / 32)) + #define IRR_SHIFT(idx) ((idx * 4) % 32) + +-static void write_irr(void __iomem *irr0, int idx, u32 value) ++static inline u32 read_irr(void __iomem *irr0, int idx) ++{ ++ return (readl(irr0 + IRR_OFFSET(idx)) >> IRR_SHIFT(idx)) & 0xf; ++} ++ ++static inline void write_irr(void __iomem *irr0, int idx, u32 value) + { + unsigned int offset = IRR_OFFSET(idx); + unsigned int shift = IRR_SHIFT(idx); +@@ -48,16 +84,33 @@ static void write_irr(void __iomem *irr0 + writel(irr, irr0 + offset); + } + ++static inline void enable_gimr(int hwirq, int cpu) ++{ ++ u32 value; ++ ++ value = readl(REG(RTL_ICTL_GIMR, cpu)); ++ value |= (BIT(hwirq) & realtek_ictl_unmask[cpu]); ++ writel(value, REG(RTL_ICTL_GIMR, cpu)); ++} ++ ++static inline void disable_gimr(int hwirq, int cpu) ++{ ++ u32 value; ++ ++ value = readl(REG(RTL_ICTL_GIMR, cpu)); ++ value &= ~BIT(hwirq); ++ writel(value, REG(RTL_ICTL_GIMR, cpu)); ++} ++ + static void realtek_ictl_unmask_irq(struct irq_data *i) + { + unsigned long flags; +- u32 value; ++ int cpu; + + raw_spin_lock_irqsave(&irq_lock, flags); + +- value = readl(REG(RTL_ICTL_GIMR)); +- value |= BIT(i->hwirq); +- writel(value, REG(RTL_ICTL_GIMR)); ++ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) ++ enable_gimr(i->hwirq, cpu); + + raw_spin_unlock_irqrestore(&irq_lock, flags); + } +@@ -65,110 +118,259 @@ static void realtek_ictl_unmask_irq(stru + static void realtek_ictl_mask_irq(struct irq_data *i) + { + unsigned long flags; +- u32 value; ++ int cpu; + + raw_spin_lock_irqsave(&irq_lock, flags); + +- value = readl(REG(RTL_ICTL_GIMR)); +- value &= ~BIT(i->hwirq); +- writel(value, REG(RTL_ICTL_GIMR)); ++ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) ++ disable_gimr(i->hwirq, cpu); + + raw_spin_unlock_irqrestore(&irq_lock, flags); + } + ++static int __maybe_unused realtek_ictl_irq_affinity(struct irq_data *i, ++ const struct cpumask *dest, bool force) ++{ ++ struct realtek_ictl_output *output = i->domain->host_data; ++ cpumask_t cpu_configure; ++ cpumask_t cpu_disable; ++ cpumask_t cpu_enable; ++ unsigned long flags; ++ int cpu; ++ ++ raw_spin_lock_irqsave(&irq_lock, flags); ++ ++ cpumask_and(&cpu_configure, cpu_present_mask, &realtek_ictl_cpu_configurable); ++ ++ cpumask_and(&cpu_enable, &cpu_configure, dest); ++ cpumask_andnot(&cpu_disable, &cpu_configure, dest); ++ ++ for_each_cpu(cpu, &cpu_disable) { ++ write_irr(REG(RTL_ICTL_IRR0, cpu), i->hwirq, 0); ++ realtek_ictl_unmask[cpu] &= ~BIT(i->hwirq); ++ disable_gimr(i->hwirq, cpu); ++ } ++ ++ for_each_cpu(cpu, &cpu_enable) { ++ write_irr(REG(RTL_ICTL_IRR0, cpu), i->hwirq, output->output_index + 1); ++ realtek_ictl_unmask[cpu] |= BIT(i->hwirq); ++ enable_gimr(i->hwirq, cpu); ++ } ++ ++ irq_data_update_effective_affinity(i, &cpu_enable); ++ ++ raw_spin_unlock_irqrestore(&irq_lock, flags); ++ ++ return IRQ_SET_MASK_OK; ++} ++ + static struct irq_chip realtek_ictl_irq = { + .name = "realtek-rtl-intc", + .irq_mask = realtek_ictl_mask_irq, + .irq_unmask = realtek_ictl_unmask_irq, ++#ifdef CONFIG_SMP ++ .irq_set_affinity = realtek_ictl_irq_affinity, ++#endif + }; + + static int intc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) + { ++ struct realtek_ictl_output *output = d->host_data; + unsigned long flags; + + irq_set_chip_and_handler(irq, &realtek_ictl_irq, handle_level_irq); + + raw_spin_lock_irqsave(&irq_lock, flags); +- write_irr(REG(RTL_ICTL_IRR0), hw, 1); ++ ++ output->child_mask |= BIT(hw); ++ write_irr(REG(RTL_ICTL_IRR0, 0), hw, output->output_index + 1); ++ realtek_ictl_unmask[0] |= BIT(hw); ++ + raw_spin_unlock_irqrestore(&irq_lock, flags); + + return 0; + } + ++static int intc_select(struct irq_domain *d, struct irq_fwspec *fwspec, ++ enum irq_domain_bus_token bus_token) ++{ ++ struct realtek_ictl_output *output = d->host_data; ++ bool routed_elsewhere; ++ unsigned long flags; ++ u32 routing_old; ++ int cpu; ++ ++ if (fwspec->fwnode != output->fwnode) ++ return false; ++ ++ /* Original specifiers had only one parameter */ ++ if (fwspec->param_count < 2) ++ return true; ++ ++ raw_spin_lock_irqsave(&irq_lock, flags); ++ ++ /* ++ * Inputs can only be routed to one output, so they shouldn't be ++ * allowed to end up in multiple domains. ++ */ ++ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) { ++ routing_old = read_irr(REG(RTL_ICTL_IRR0, cpu), fwspec->param[0]); ++ routed_elsewhere = routing_old && fwspec->param[1] != routing_old - 1; ++ if (routed_elsewhere) { ++ pr_warn("soc int %d already routed to output %d\n", ++ fwspec->param[0], routing_old - 1); ++ break; ++ } ++ } ++ ++ raw_spin_unlock_irqrestore(&irq_lock, flags); ++ ++ return !routed_elsewhere && fwspec->param[1] == output->output_index; ++} ++ + static const struct irq_domain_ops irq_domain_ops = { + .map = intc_map, ++ .select = intc_select, + .xlate = irq_domain_xlate_onecell, + }; + + static void realtek_irq_dispatch(struct irq_desc *desc) + { ++ struct realtek_ictl_output *output = irq_desc_get_handler_data(desc); + struct irq_chip *chip = irq_desc_get_chip(desc); +- struct irq_domain *domain; ++ int cpu = smp_processor_id(); + unsigned long pending; + unsigned int soc_int; + + chained_irq_enter(chip, desc); +- pending = readl(REG(RTL_ICTL_GIMR)) & readl(REG(RTL_ICTL_GISR)); ++ pending = readl(REG(RTL_ICTL_GIMR, cpu)) & readl(REG(RTL_ICTL_GISR, cpu)) ++ & output->child_mask; + + if (unlikely(!pending)) { + spurious_interrupt(); + goto out; + } + +- domain = irq_desc_get_handler_data(desc); +- for_each_set_bit(soc_int, &pending, 32) +- generic_handle_domain_irq(domain, soc_int); ++ for_each_set_bit(soc_int, &pending, RTL_ICTL_NUM_INPUTS) ++ generic_handle_domain_irq(output->domain, soc_int); + + out: + chained_irq_exit(chip, desc); + } + ++/* ++ * SoC interrupts are cascaded to MIPS CPU interrupts according to the ++ * interrupt-map in the device tree. Each SoC interrupt gets 4 bits for ++ * the CPU interrupt in an Interrupt Routing Register. Max 32 SoC interrupts ++ * thus go into 4 IRRs. A routing value of '0' means the interrupt is left ++ * disconnected. Routing values {1..15} connect to output lines {0..14}. ++ */ ++static int __init setup_parent_interrupts(struct device_node *node, int *parents, ++ unsigned int num_parents) ++{ ++ struct realtek_ictl_output *outputs; ++ struct realtek_ictl_output *output; ++ struct irq_domain *domain; ++ unsigned int p; ++ ++ outputs = kcalloc(num_parents, sizeof(*outputs), GFP_KERNEL); ++ if (!outputs) ++ return -ENOMEM; ++ ++ for (p = 0; p < num_parents; p++) { ++ output = outputs + p; ++ ++ domain = irq_domain_add_linear(node, RTL_ICTL_NUM_INPUTS, &irq_domain_ops, output); ++ if (!domain) ++ goto domain_err; ++ ++ output->fwnode = of_node_to_fwnode(node); ++ output->output_index = p; ++ output->domain = domain; ++ ++ irq_set_chained_handler_and_data(parents[p], realtek_irq_dispatch, output); ++ } ++ ++ return 0; ++ ++domain_err: ++ while (p--) { ++ irq_set_chained_handler_and_data(parents[p], NULL, NULL); ++ irq_domain_remove(outputs[p].domain); ++ } ++ ++ kfree(outputs); ++ ++ return -ENOMEM; ++} ++ + static int __init realtek_rtl_of_init(struct device_node *node, struct device_node *parent) + { ++ int parent_irqs[RTL_ICTL_NUM_OUTPUTS]; + struct of_phandle_args oirq; +- struct irq_domain *domain; ++ unsigned int num_parents; + unsigned int soc_irq; +- int parent_irq; ++ unsigned int p; ++ int cpu; ++ ++ cpumask_clear(&realtek_ictl_cpu_configurable); + +- realtek_ictl_base = of_iomap(node, 0); +- if (!realtek_ictl_base) ++ for (cpu = 0; cpu < NR_CPUS; cpu++) { ++ realtek_ictl_base[cpu] = of_iomap(node, cpu); ++ if (realtek_ictl_base[cpu]) { ++ cpumask_set_cpu(cpu, &realtek_ictl_cpu_configurable); ++ ++ /* Disable all cascaded interrupts and clear routing */ ++ for (soc_irq = 0; soc_irq < RTL_ICTL_NUM_INPUTS; soc_irq++) { ++ write_irr(REG(RTL_ICTL_IRR0, cpu), soc_irq, 0); ++ realtek_ictl_unmask[cpu] &= ~BIT(soc_irq); ++ disable_gimr(soc_irq, cpu); ++ } ++ } ++ } ++ ++ if (cpumask_empty(&realtek_ictl_cpu_configurable)) + return -ENXIO; + +- /* Disable all cascaded interrupts and clear routing */ +- writel(0, REG(RTL_ICTL_GIMR)); +- for (soc_irq = 0; soc_irq < RTL_ICTL_NUM_INPUTS; soc_irq++) +- write_irr(REG(RTL_ICTL_IRR0), soc_irq, 0); ++ num_parents = of_irq_count(node); ++ if (num_parents > RTL_ICTL_NUM_OUTPUTS) { ++ pr_err("too many parent interrupts\n"); ++ return -EINVAL; ++ } + +- if (WARN_ON(!of_irq_count(node))) { ++ for (p = 0; p < num_parents; p++) ++ parent_irqs[p] = of_irq_get(node, p); ++ ++ if (WARN_ON(!num_parents)) { + /* + * If DT contains no parent interrupts, assume MIPS CPU IRQ 2 + * (HW0) is connected to the first output. This is the case for + * all known hardware anyway. "interrupt-map" is deprecated, so + * don't bother trying to parse that. ++ * Since this is to account for old devicetrees with one-cell ++ * interrupt specifiers, only one output domain is needed. + */ + oirq.np = of_find_compatible_node(NULL, NULL, "mti,cpu-interrupt-controller"); +- oirq.args_count = 1; +- oirq.args[0] = 2; +- +- parent_irq = irq_create_of_mapping(&oirq); ++ if (oirq.np) { ++ oirq.args_count = 1; ++ oirq.args[0] = 2; ++ ++ parent_irqs[0] = irq_create_of_mapping(&oirq); ++ num_parents = 1; ++ } + + of_node_put(oirq.np); +- } else { +- parent_irq = of_irq_get(node, 0); + } + +- if (parent_irq < 0) +- return parent_irq; +- else if (!parent_irq) +- return -ENODEV; +- +- domain = irq_domain_add_linear(node, RTL_ICTL_NUM_INPUTS, &irq_domain_ops, NULL); +- if (!domain) +- return -ENOMEM; +- +- irq_set_chained_handler_and_data(parent_irq, realtek_irq_dispatch, domain); ++ /* Ensure we haven't collected any errors before proceeding */ ++ for (p = 0; p < num_parents; p++) { ++ if (parent_irqs[p] < 0) ++ return parent_irqs[p]; ++ if (!parent_irqs[p]) ++ return -ENODEV; ++ } + +- return 0; ++ return setup_parent_interrupts(node, &parent_irqs[0], num_parents); + } + + IRQCHIP_DECLARE(realtek_rtl_intc, "realtek,rtl-intc", realtek_rtl_of_init); diff --git a/target/linux/realtek/patches-6.6/315-irqchip-irq-realtek-rtl-add-VPE-support.patch b/target/linux/realtek/patches-6.6/315-irqchip-irq-realtek-rtl-add-VPE-support.patch deleted file mode 100644 index 102c9850ce..0000000000 --- a/target/linux/realtek/patches-6.6/315-irqchip-irq-realtek-rtl-add-VPE-support.patch +++ /dev/null @@ -1,402 +0,0 @@ -From 6c18e9c491959ac0674ebe36b09f9ddc3f2c9bce Mon Sep 17 00:00:00 2001 -From: Birger Koblitz -Date: Fri, 31 Dec 2021 11:56:49 +0100 -Subject: [PATCH] realtek: Add VPE support for the IRQ driver - -In order to support VSMP, enable support for both VPEs -of the RTL839X and RTL930X SoCs in the irq-realtek-rtl -driver. Add support for IRQ affinity setting. - -Submitted-by: Birger Koblitz ---- - drivers/irqchip/irq-realtek-rtl.c | 152 +++++++++++++++--- - 1 file changed, 73 insertions(+), 76 deletions(-) - ---- a/drivers/irqchip/irq-realtek-rtl.c -+++ b/drivers/irqchip/irq-realtek-rtl.c -@@ -21,21 +21,63 @@ - #define RTL_ICTL_IRR2 0x10 - #define RTL_ICTL_IRR3 0x14 - --#define REG(x) (realtek_ictl_base + x) -+#define RTL_ICTL_NUM_INPUTS 32 -+#define RTL_ICTL_NUM_OUTPUTS 15 - - static DEFINE_RAW_SPINLOCK(irq_lock); --static void __iomem *realtek_ictl_base; -+ -+#define REG(offset, cpu) (realtek_ictl_base[cpu] + offset) -+ -+static void __iomem *realtek_ictl_base[NR_CPUS]; -+static cpumask_t realtek_ictl_cpu_configurable; -+ -+struct realtek_ictl_output { -+ /* IRQ controller data */ -+ struct fwnode_handle *fwnode; -+ /* Output specific data */ -+ unsigned int output_index; -+ struct irq_domain *domain; -+ u32 child_mask; -+}; -+ -+/* -+ * IRR0-IRR3 store 4 bits per interrupt, but Realtek uses inverted numbering, -+ * placing IRQ 31 in the first four bits. A routing value of '0' means the -+ * interrupt is left disconnected. Routing values {1..15} connect to output -+ * lines {0..14}. -+ */ -+#define IRR_OFFSET(idx) (4 * (3 - (idx * 4) / 32)) -+#define IRR_SHIFT(idx) ((idx * 4) % 32) -+ -+static inline u32 read_irr(void __iomem *irr0, int idx) -+{ -+ return (readl(irr0 + IRR_OFFSET(idx)) >> IRR_SHIFT(idx)) & 0xf; -+} -+ -+static inline void write_irr(void __iomem *irr0, int idx, u32 value) -+{ -+ unsigned int offset = IRR_OFFSET(idx); -+ unsigned int shift = IRR_SHIFT(idx); -+ u32 irr; -+ -+ irr = readl(irr0 + offset) & ~(0xf << shift); -+ irr |= (value & 0xf) << shift; -+ writel(irr, irr0 + offset); -+} - - static void realtek_ictl_unmask_irq(struct irq_data *i) - { - unsigned long flags; - u32 value; -+ int cpu; - - raw_spin_lock_irqsave(&irq_lock, flags); - -- value = readl(REG(RTL_ICTL_GIMR)); -- value |= BIT(i->hwirq); -- writel(value, REG(RTL_ICTL_GIMR)); -+ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) { -+ value = readl(REG(RTL_ICTL_GIMR, cpu)); -+ value |= BIT(i->hwirq); -+ writel(value, REG(RTL_ICTL_GIMR, cpu)); -+ } - - raw_spin_unlock_irqrestore(&irq_lock, flags); - } -@@ -44,52 +86,137 @@ static void realtek_ictl_mask_irq(struct - { - unsigned long flags; - u32 value; -+ int cpu; - - raw_spin_lock_irqsave(&irq_lock, flags); - -- value = readl(REG(RTL_ICTL_GIMR)); -- value &= ~BIT(i->hwirq); -- writel(value, REG(RTL_ICTL_GIMR)); -+ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) { -+ value = readl(REG(RTL_ICTL_GIMR, cpu)); -+ value &= ~BIT(i->hwirq); -+ writel(value, REG(RTL_ICTL_GIMR, cpu)); -+ } - - raw_spin_unlock_irqrestore(&irq_lock, flags); - } - -+static int __maybe_unused realtek_ictl_irq_affinity(struct irq_data *i, -+ const struct cpumask *dest, bool force) -+{ -+ struct realtek_ictl_output *output = i->domain->host_data; -+ cpumask_t cpu_configure; -+ cpumask_t cpu_disable; -+ cpumask_t cpu_enable; -+ unsigned long flags; -+ int cpu; -+ -+ raw_spin_lock_irqsave(&irq_lock, flags); -+ -+ cpumask_and(&cpu_configure, cpu_present_mask, &realtek_ictl_cpu_configurable); -+ -+ cpumask_and(&cpu_enable, &cpu_configure, dest); -+ cpumask_andnot(&cpu_disable, &cpu_configure, dest); -+ -+ for_each_cpu(cpu, &cpu_disable) -+ write_irr(REG(RTL_ICTL_IRR0, cpu), i->hwirq, 0); -+ -+ for_each_cpu(cpu, &cpu_enable) -+ write_irr(REG(RTL_ICTL_IRR0, cpu), i->hwirq, output->output_index + 1); -+ -+ irq_data_update_effective_affinity(i, &cpu_enable); -+ -+ raw_spin_unlock_irqrestore(&irq_lock, flags); -+ -+ return IRQ_SET_MASK_OK; -+} -+ - static struct irq_chip realtek_ictl_irq = { - .name = "realtek-rtl-intc", - .irq_mask = realtek_ictl_mask_irq, - .irq_unmask = realtek_ictl_unmask_irq, -+#ifdef CONFIG_SMP -+ .irq_set_affinity = realtek_ictl_irq_affinity, -+#endif - }; - - static int intc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) - { -+ struct realtek_ictl_output *output = d->host_data; -+ unsigned long flags; -+ - irq_set_chip_and_handler(irq, &realtek_ictl_irq, handle_level_irq); - -+ raw_spin_lock_irqsave(&irq_lock, flags); -+ -+ output->child_mask |= BIT(hw); -+ write_irr(REG(RTL_ICTL_IRR0, 0), hw, output->output_index + 1); -+ -+ raw_spin_unlock_irqrestore(&irq_lock, flags); -+ - return 0; - } - -+static int intc_select(struct irq_domain *d, struct irq_fwspec *fwspec, -+ enum irq_domain_bus_token bus_token) -+{ -+ struct realtek_ictl_output *output = d->host_data; -+ bool routed_elsewhere; -+ unsigned long flags; -+ u32 routing_old; -+ int cpu; -+ -+ if (fwspec->fwnode != output->fwnode) -+ return false; -+ -+ /* Original specifiers had only one parameter */ -+ if (fwspec->param_count < 2) -+ return true; -+ -+ raw_spin_lock_irqsave(&irq_lock, flags); -+ -+ /* -+ * Inputs can only be routed to one output, so they shouldn't be -+ * allowed to end up in multiple domains. -+ */ -+ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) { -+ routing_old = read_irr(REG(RTL_ICTL_IRR0, cpu), fwspec->param[0]); -+ routed_elsewhere = routing_old && fwspec->param[1] != routing_old - 1; -+ if (routed_elsewhere) { -+ pr_warn("soc int %d already routed to output %d\n", -+ fwspec->param[0], routing_old - 1); -+ break; -+ } -+ } -+ -+ raw_spin_unlock_irqrestore(&irq_lock, flags); -+ -+ return !routed_elsewhere && fwspec->param[1] == output->output_index; -+} -+ - static const struct irq_domain_ops irq_domain_ops = { - .map = intc_map, -+ .select = intc_select, - .xlate = irq_domain_xlate_onecell, - }; - - static void realtek_irq_dispatch(struct irq_desc *desc) - { -+ struct realtek_ictl_output *output = irq_desc_get_handler_data(desc); - struct irq_chip *chip = irq_desc_get_chip(desc); -- struct irq_domain *domain; -+ int cpu = smp_processor_id(); - unsigned long pending; - unsigned int soc_int; - - chained_irq_enter(chip, desc); -- pending = readl(REG(RTL_ICTL_GIMR)) & readl(REG(RTL_ICTL_GISR)); -+ pending = readl(REG(RTL_ICTL_GIMR, cpu)) & readl(REG(RTL_ICTL_GISR, cpu)) -+ & output->child_mask; - - if (unlikely(!pending)) { - spurious_interrupt(); - goto out; - } - -- domain = irq_desc_get_handler_data(desc); -- for_each_set_bit(soc_int, &pending, 32) -- generic_handle_domain_irq(domain, soc_int); -+ for_each_set_bit(soc_int, &pending, RTL_ICTL_NUM_INPUTS) -+ generic_handle_domain_irq(output->domain, soc_int); - - out: - chained_irq_exit(chip, desc); -@@ -102,85 +229,110 @@ out: - * thus go into 4 IRRs. A routing value of '0' means the interrupt is left - * disconnected. Routing values {1..15} connect to output lines {0..14}. - */ --static int __init map_interrupts(struct device_node *node, struct irq_domain *domain) -+static int __init setup_parent_interrupts(struct device_node *node, int *parents, -+ unsigned int num_parents) - { -- struct device_node *cpu_ictl; -- const __be32 *imap; -- u32 imaplen, soc_int, cpu_int, tmp, regs[4]; -- int ret, i, irr_regs[] = { -- RTL_ICTL_IRR3, -- RTL_ICTL_IRR2, -- RTL_ICTL_IRR1, -- RTL_ICTL_IRR0, -- }; -- u8 mips_irqs_set; -+ struct realtek_ictl_output *outputs; -+ struct realtek_ictl_output *output; -+ struct irq_domain *domain; -+ unsigned int p; - -- ret = of_property_read_u32(node, "#address-cells", &tmp); -- if (ret || tmp) -- return -EINVAL; -+ outputs = kcalloc(num_parents, sizeof(*outputs), GFP_KERNEL); -+ if (!outputs) -+ return -ENOMEM; - -- imap = of_get_property(node, "interrupt-map", &imaplen); -- if (!imap || imaplen % 3) -- return -EINVAL; -+ for (p = 0; p < num_parents; p++) { -+ output = outputs + p; - -- mips_irqs_set = 0; -- memset(regs, 0, sizeof(regs)); -- for (i = 0; i < imaplen; i += 3 * sizeof(u32)) { -- soc_int = be32_to_cpup(imap); -- if (soc_int > 31) -- return -EINVAL; -- -- cpu_ictl = of_find_node_by_phandle(be32_to_cpup(imap + 1)); -- if (!cpu_ictl) -- return -EINVAL; -- ret = of_property_read_u32(cpu_ictl, "#interrupt-cells", &tmp); -- of_node_put(cpu_ictl); -- if (ret || tmp != 1) -- return -EINVAL; -- -- cpu_int = be32_to_cpup(imap + 2); -- if (cpu_int > 7 || cpu_int < 2) -- return -EINVAL; -- -- if (!(mips_irqs_set & BIT(cpu_int))) { -- irq_set_chained_handler_and_data(cpu_int, realtek_irq_dispatch, -- domain); -- mips_irqs_set |= BIT(cpu_int); -- } -+ domain = irq_domain_add_linear(node, RTL_ICTL_NUM_INPUTS, &irq_domain_ops, output); -+ if (!domain) -+ goto domain_err; - -- /* Use routing values (1..6) for CPU interrupts (2..7) */ -- regs[(soc_int * 4) / 32] |= (cpu_int - 1) << (soc_int * 4) % 32; -- imap += 3; -- } -+ output->fwnode = of_node_to_fwnode(node); -+ output->output_index = p; -+ output->domain = domain; - -- for (i = 0; i < 4; i++) -- writel(regs[i], REG(irr_regs[i])); -+ irq_set_chained_handler_and_data(parents[p], realtek_irq_dispatch, output); -+ } - - return 0; -+ -+domain_err: -+ while (p--) { -+ irq_set_chained_handler_and_data(parents[p], NULL, NULL); -+ irq_domain_remove(outputs[p].domain); -+ } -+ -+ kfree(outputs); -+ -+ return -ENOMEM; - } - - static int __init realtek_rtl_of_init(struct device_node *node, struct device_node *parent) - { -- struct irq_domain *domain; -- int ret; -+ int parent_irqs[RTL_ICTL_NUM_OUTPUTS]; -+ struct of_phandle_args oirq; -+ unsigned int num_parents; -+ unsigned int soc_irq; -+ unsigned int p; -+ int cpu; -+ -+ cpumask_clear(&realtek_ictl_cpu_configurable); -+ -+ for (cpu = 0; cpu < NR_CPUS; cpu++) { -+ realtek_ictl_base[cpu] = of_iomap(node, cpu); -+ if (realtek_ictl_base[cpu]) { -+ cpumask_set_cpu(cpu, &realtek_ictl_cpu_configurable); -+ -+ /* Disable all cascaded interrupts and clear routing */ -+ writel(0, REG(RTL_ICTL_GIMR, cpu)); -+ for (soc_irq = 0; soc_irq < RTL_ICTL_NUM_INPUTS; soc_irq++) -+ write_irr(REG(RTL_ICTL_IRR0, cpu), soc_irq, 0); -+ } -+ } - -- realtek_ictl_base = of_iomap(node, 0); -- if (!realtek_ictl_base) -+ if (cpumask_empty(&realtek_ictl_cpu_configurable)) - return -ENXIO; - -- /* Disable all cascaded interrupts */ -- writel(0, REG(RTL_ICTL_GIMR)); -+ num_parents = of_irq_count(node); -+ if (num_parents > RTL_ICTL_NUM_OUTPUTS) { -+ pr_err("too many parent interrupts\n"); -+ return -EINVAL; -+ } - -- domain = irq_domain_add_simple(node, 32, 0, -- &irq_domain_ops, NULL); -+ for (p = 0; p < num_parents; p++) -+ parent_irqs[p] = of_irq_get(node, p); - -- ret = map_interrupts(node, domain); -- if (ret) { -- pr_err("invalid interrupt map\n"); -- return ret; -+ if (WARN_ON(!num_parents)) { -+ /* -+ * If DT contains no parent interrupts, assume MIPS CPU IRQ 2 -+ * (HW0) is connected to the first output. This is the case for -+ * all known hardware anyway. "interrupt-map" is deprecated, so -+ * don't bother trying to parse that. -+ * Since this is to account for old devicetrees with one-cell -+ * interrupt specifiers, only one output domain is needed. -+ */ -+ oirq.np = of_find_compatible_node(NULL, NULL, "mti,cpu-interrupt-controller"); -+ if (oirq.np) { -+ oirq.args_count = 1; -+ oirq.args[0] = 2; -+ -+ parent_irqs[0] = irq_create_of_mapping(&oirq); -+ num_parents = 1; -+ } -+ -+ of_node_put(oirq.np); - } - -- return 0; -+ /* Ensure we haven't collected any errors before proceeding */ -+ for (p = 0; p < num_parents; p++) { -+ if (parent_irqs[p] < 0) -+ return parent_irqs[p]; -+ if (!parent_irqs[p]) -+ return -ENODEV; -+ } -+ -+ return setup_parent_interrupts(node, &parent_irqs[0], num_parents); - } - - IRQCHIP_DECLARE(realtek_rtl_intc, "realtek,rtl-intc", realtek_rtl_of_init); diff --git a/target/linux/realtek/patches-6.6/319-irqchip-irq-realtek-rtl-fix-VPE-affinity.patch b/target/linux/realtek/patches-6.6/319-irqchip-irq-realtek-rtl-fix-VPE-affinity.patch deleted file mode 100644 index 0c29b7739e..0000000000 --- a/target/linux/realtek/patches-6.6/319-irqchip-irq-realtek-rtl-fix-VPE-affinity.patch +++ /dev/null @@ -1,159 +0,0 @@ -From 2cd00b51470a30198b048a5fca48a04db77e29cc Mon Sep 17 00:00:00 2001 -From: INAGAKI Hiroshi -Date: Fri, 21 May 2021 23:16:37 +0900 -Subject: [PATCH] realtek: backport irq-realtek-rtl driver from 5.12 to 5.10 - -This patch backports "irq-realtek-rtl" driver to Kernel 5.10 from 5.12. -"MACH_REALTEK_RTL" is used as a platform name in upstream, but "RTL838X" -is used in OpenWrt, so update the dependency by the additional patch. - -Submitted-by: INAGAKI Hiroshi ---- - drivers/irqchip/irq-realtek-rtl.c | 38 +++++++++++------ - 1 files changed, 58 insertions(+), 20 deletions(-) - ---- a/drivers/irqchip/irq-realtek-rtl.c -+++ b/drivers/irqchip/irq-realtek-rtl.c -@@ -28,6 +28,7 @@ static DEFINE_RAW_SPINLOCK(irq_lock); - - #define REG(offset, cpu) (realtek_ictl_base[cpu] + offset) - -+static u32 realtek_ictl_unmask[NR_CPUS]; - static void __iomem *realtek_ictl_base[NR_CPUS]; - static cpumask_t realtek_ictl_cpu_configurable; - -@@ -41,11 +42,29 @@ struct realtek_ictl_output { - }; - - /* -- * IRR0-IRR3 store 4 bits per interrupt, but Realtek uses inverted numbering, -- * placing IRQ 31 in the first four bits. A routing value of '0' means the -- * interrupt is left disconnected. Routing values {1..15} connect to output -- * lines {0..14}. -+ * Per CPU we have a set of 5 registers that determine interrupt handling for -+ * 32 external interrupts. GIMR (enable/disable interrupt) plus IRR0-IRR3 that -+ * contain "routing" or "priority" values. GIMR uses one bit for each interrupt -+ * and IRRx store 4 bits per interrupt. Realtek uses inverted numbering, -+ * placing IRQ 31 in the first four bits. The register combinations give the -+ * following results for a single interrupt in the wild: -+ * -+ * a) GIMR = 0 / IRRx > 0 -> no interrupts -+ * b) GIMR = 0 / IRRx = 0 -> no interrupts -+ * c) GIMR = 1 / IRRx > 0 -> interrupts -+ * d) GIMR = 1 / IRRx = 0 -> rare interrupts in SMP environment -+ * -+ * Combination d) seems to trigger interrupts only on a VPE if the other VPE -+ * has GIMR = 0 and IRRx > 0. E.g. busy without interrupts allowed. To provide -+ * IRQ balancing features in SMP this driver will handle the registers as -+ * follows: -+ * -+ * 1) set IRRx > 0 for VPE where the interrupt is desired -+ * 2) set IRRx = 0 for VPE where the interrupt is not desired -+ * 3) set both GIMR = 0 to mask (disabled) interrupt -+ * 4) set GIMR = 1 to unmask (enable) interrupt but only for VPE where IRRx > 0 - */ -+ - #define IRR_OFFSET(idx) (4 * (3 - (idx * 4) / 32)) - #define IRR_SHIFT(idx) ((idx * 4) % 32) - -@@ -65,19 +84,33 @@ static inline void write_irr(void __iome - writel(irr, irr0 + offset); - } - -+static inline void enable_gimr(int hwirq, int cpu) -+{ -+ u32 value; -+ -+ value = readl(REG(RTL_ICTL_GIMR, cpu)); -+ value |= (BIT(hwirq) & realtek_ictl_unmask[cpu]); -+ writel(value, REG(RTL_ICTL_GIMR, cpu)); -+} -+ -+static inline void disable_gimr(int hwirq, int cpu) -+{ -+ u32 value; -+ -+ value = readl(REG(RTL_ICTL_GIMR, cpu)); -+ value &= ~BIT(hwirq); -+ writel(value, REG(RTL_ICTL_GIMR, cpu)); -+} -+ - static void realtek_ictl_unmask_irq(struct irq_data *i) - { - unsigned long flags; -- u32 value; - int cpu; - - raw_spin_lock_irqsave(&irq_lock, flags); - -- for_each_cpu(cpu, &realtek_ictl_cpu_configurable) { -- value = readl(REG(RTL_ICTL_GIMR, cpu)); -- value |= BIT(i->hwirq); -- writel(value, REG(RTL_ICTL_GIMR, cpu)); -- } -+ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) -+ enable_gimr(i->hwirq, cpu); - - raw_spin_unlock_irqrestore(&irq_lock, flags); - } -@@ -85,16 +118,12 @@ static void realtek_ictl_unmask_irq(stru - static void realtek_ictl_mask_irq(struct irq_data *i) - { - unsigned long flags; -- u32 value; - int cpu; - - raw_spin_lock_irqsave(&irq_lock, flags); - -- for_each_cpu(cpu, &realtek_ictl_cpu_configurable) { -- value = readl(REG(RTL_ICTL_GIMR, cpu)); -- value &= ~BIT(i->hwirq); -- writel(value, REG(RTL_ICTL_GIMR, cpu)); -- } -+ for_each_cpu(cpu, &realtek_ictl_cpu_configurable) -+ disable_gimr(i->hwirq, cpu); - - raw_spin_unlock_irqrestore(&irq_lock, flags); - } -@@ -116,11 +145,17 @@ static int __maybe_unused realtek_ictl_i - cpumask_and(&cpu_enable, &cpu_configure, dest); - cpumask_andnot(&cpu_disable, &cpu_configure, dest); - -- for_each_cpu(cpu, &cpu_disable) -+ for_each_cpu(cpu, &cpu_disable) { - write_irr(REG(RTL_ICTL_IRR0, cpu), i->hwirq, 0); -+ realtek_ictl_unmask[cpu] &= ~BIT(i->hwirq); -+ disable_gimr(i->hwirq, cpu); -+ } - -- for_each_cpu(cpu, &cpu_enable) -+ for_each_cpu(cpu, &cpu_enable) { - write_irr(REG(RTL_ICTL_IRR0, cpu), i->hwirq, output->output_index + 1); -+ realtek_ictl_unmask[cpu] |= BIT(i->hwirq); -+ enable_gimr(i->hwirq, cpu); -+ } - - irq_data_update_effective_affinity(i, &cpu_enable); - -@@ -149,6 +184,7 @@ static int intc_map(struct irq_domain *d - - output->child_mask |= BIT(hw); - write_irr(REG(RTL_ICTL_IRR0, 0), hw, output->output_index + 1); -+ realtek_ictl_unmask[0] |= BIT(hw); - - raw_spin_unlock_irqrestore(&irq_lock, flags); - -@@ -285,9 +321,11 @@ static int __init realtek_rtl_of_init(st - cpumask_set_cpu(cpu, &realtek_ictl_cpu_configurable); - - /* Disable all cascaded interrupts and clear routing */ -- writel(0, REG(RTL_ICTL_GIMR, cpu)); -- for (soc_irq = 0; soc_irq < RTL_ICTL_NUM_INPUTS; soc_irq++) -+ for (soc_irq = 0; soc_irq < RTL_ICTL_NUM_INPUTS; soc_irq++) { - write_irr(REG(RTL_ICTL_IRR0, cpu), soc_irq, 0); -+ realtek_ictl_unmask[cpu] &= ~BIT(soc_irq); -+ disable_gimr(soc_irq, cpu); -+ } - } - } -