--- /dev/null
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2020 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/riscv/sifive,ccache0.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive Composable Cache Controller
+
+maintainers:
+ - Sagar Kadam <sagar.kadam@sifive.com>
+ - Paul Walmsley <paul.walmsley@sifive.com>
+
+description:
+ The SiFive Composable Cache Controller is used to provide access to fast copies
+ of memory for masters in a Core Complex. The Composable Cache Controller also
+ acts as directory-based coherency manager.
+ All the properties in ePAPR/DeviceTree specification applies for this platform.
+
+select:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - sifive,ccache0
+ - sifive,fu540-c000-ccache
+ - sifive,fu740-c000-ccache
+
+ required:
+ - compatible
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - sifive,ccache0
+ - sifive,fu540-c000-ccache
+ - sifive,fu740-c000-ccache
+ - const: cache
+ - items:
+ - const: microchip,mpfs-ccache
+ - const: sifive,fu540-c000-ccache
+ - const: cache
+
+ cache-block-size:
+ const: 64
+
+ cache-level:
+ enum: [2, 3]
+
+ cache-sets:
+ enum: [1024, 2048]
+
+ cache-size:
+ const: 2097152
+
+ cache-unified: true
+
+ interrupts:
+ minItems: 3
+ items:
+ - description: DirError interrupt
+ - description: DataError interrupt
+ - description: DataFail interrupt
+ - description: DirFail interrupt
+
+ reg:
+ maxItems: 1
+
+ next-level-cache: true
+
+ memory-region:
+ maxItems: 1
+ description: |
+ The reference to the reserved-memory for the L2 Loosely Integrated Memory region.
+ The reserved memory node should be defined as per the bindings in reserved-memory.txt.
+
+allOf:
+ - $ref: /schemas/cache-controller.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - sifive,fu740-c000-ccache
+ - microchip,mpfs-ccache
+
+ then:
+ properties:
+ interrupts:
+ description: |
+ Must contain entries for DirError, DataError, DataFail, DirFail signals.
+ minItems: 4
+
+ else:
+ properties:
+ interrupts:
+ description: |
+ Must contain entries for DirError, DataError and DataFail signals.
+ maxItems: 3
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: sifive,fu740-c000-ccache
+
+ then:
+ properties:
+ cache-sets:
+ const: 2048
+
+ else:
+ properties:
+ cache-sets:
+ const: 1024
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: sifive,ccache0
+
+ then:
+ properties:
+ cache-level:
+ enum: [2, 3]
+
+ else:
+ properties:
+ cache-level:
+ const: 2
+
+additionalProperties: false
+
+required:
+ - compatible
+ - cache-block-size
+ - cache-level
+ - cache-sets
+ - cache-size
+ - cache-unified
+ - interrupts
+ - reg
+
+examples:
+ - |
+ cache-controller@2010000 {
+ compatible = "sifive,fu540-c000-ccache", "cache";
+ cache-block-size = <64>;
+ cache-level = <2>;
+ cache-sets = <1024>;
+ cache-size = <2097152>;
+ cache-unified;
+ reg = <0x2010000 0x1000>;
+ interrupt-parent = <&plic0>;
+ interrupts = <1>,
+ <2>,
+ <3>;
+ next-level-cache = <&L25>;
+ memory-region = <&l2_lim>;
+ };
+++ /dev/null
-# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
-# Copyright (C) 2020 SiFive, Inc.
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/riscv/sifive-l2-cache.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: SiFive L2 Cache Controller
-
-maintainers:
- - Sagar Kadam <sagar.kadam@sifive.com>
- - Paul Walmsley <paul.walmsley@sifive.com>
-
-description:
- The SiFive Level 2 Cache Controller is used to provide access to fast copies
- of memory for masters in a Core Complex. The Level 2 Cache Controller also
- acts as directory-based coherency manager.
- All the properties in ePAPR/DeviceTree specification applies for this platform.
-
-select:
- properties:
- compatible:
- contains:
- enum:
- - sifive,fu540-c000-ccache
- - sifive,fu740-c000-ccache
-
- required:
- - compatible
-
-properties:
- compatible:
- oneOf:
- - items:
- - enum:
- - sifive,fu540-c000-ccache
- - sifive,fu740-c000-ccache
- - const: cache
- - items:
- - const: microchip,mpfs-ccache
- - const: sifive,fu540-c000-ccache
- - const: cache
-
- cache-block-size:
- const: 64
-
- cache-level:
- const: 2
-
- cache-sets:
- enum: [1024, 2048]
-
- cache-size:
- const: 2097152
-
- cache-unified: true
-
- interrupts:
- minItems: 3
- items:
- - description: DirError interrupt
- - description: DataError interrupt
- - description: DataFail interrupt
- - description: DirFail interrupt
-
- reg:
- maxItems: 1
-
- next-level-cache: true
-
- memory-region:
- maxItems: 1
- description: |
- The reference to the reserved-memory for the L2 Loosely Integrated Memory region.
- The reserved memory node should be defined as per the bindings in reserved-memory.txt.
-
-allOf:
- - $ref: /schemas/cache-controller.yaml#
-
- - if:
- properties:
- compatible:
- contains:
- enum:
- - sifive,fu740-c000-ccache
- - microchip,mpfs-ccache
-
- then:
- properties:
- interrupts:
- description: |
- Must contain entries for DirError, DataError, DataFail, DirFail signals.
- minItems: 4
-
- else:
- properties:
- interrupts:
- description: |
- Must contain entries for DirError, DataError and DataFail signals.
- maxItems: 3
-
- - if:
- properties:
- compatible:
- contains:
- const: sifive,fu740-c000-ccache
-
- then:
- properties:
- cache-sets:
- const: 2048
-
- else:
- properties:
- cache-sets:
- const: 1024
-
-additionalProperties: false
-
-required:
- - compatible
- - cache-block-size
- - cache-level
- - cache-sets
- - cache-size
- - cache-unified
- - interrupts
- - reg
-
-examples:
- - |
- cache-controller@2010000 {
- compatible = "sifive,fu540-c000-ccache", "cache";
- cache-block-size = <64>;
- cache-level = <2>;
- cache-sets = <1024>;
- cache-size = <2097152>;
- cache-unified;
- reg = <0x2010000 0x1000>;
- interrupt-parent = <&plic0>;
- interrupts = <1>,
- <2>,
- <3>;
- next-level-cache = <&L25>;
- memory-region = <&l2_lim>;
- };
get_cache_size(2, CACHE_TYPE_UNIFIED)); \
NEW_AUX_ENT(AT_L2_CACHEGEOMETRY, \
get_cache_geometry(2, CACHE_TYPE_UNIFIED)); \
+ NEW_AUX_ENT(AT_L3_CACHESIZE, \
+ get_cache_size(3, CACHE_TYPE_UNIFIED)); \
+ NEW_AUX_ENT(AT_L3_CACHEGEOMETRY, \
+ get_cache_geometry(3, CACHE_TYPE_UNIFIED)); \
} while (0)
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;
#define AT_L1D_CACHEGEOMETRY 43
#define AT_L2_CACHESIZE 44
#define AT_L2_CACHEGEOMETRY 45
+#define AT_L3_CACHESIZE 46
+#define AT_L3_CACHEGEOMETRY 47
/* entries in ARCH_DLINFO */
-#define AT_VECTOR_SIZE_ARCH 7
+#define AT_VECTOR_SIZE_ARCH 9
#endif /* _UAPI_ASM_RISCV_AUXVEC_H */
config EDAC_SIFIVE
bool "Sifive platform EDAC driver"
- depends on EDAC=y && SIFIVE_L2
+ depends on EDAC=y && SIFIVE_CCACHE
help
Support for error detection and correction on the SiFive SoCs.
/*
* SiFive Platform EDAC Driver
*
- * Copyright (C) 2018-2019 SiFive, Inc.
+ * Copyright (C) 2018-2022 SiFive, Inc.
*
* This driver is partially based on octeon_edac-pc.c
*
#include <linux/edac.h>
#include <linux/platform_device.h>
#include "edac_module.h"
-#include <soc/sifive/sifive_l2_cache.h>
+#include <soc/sifive/sifive_ccache.h>
#define DRVNAME "sifive_edac"
p = container_of(this, struct sifive_edac_priv, notifier);
- if (event == SIFIVE_L2_ERR_TYPE_UE)
+ if (event == SIFIVE_CCACHE_ERR_TYPE_UE)
edac_device_handle_ue(p->dci, 0, 0, msg);
- else if (event == SIFIVE_L2_ERR_TYPE_CE)
+ else if (event == SIFIVE_CCACHE_ERR_TYPE_CE)
edac_device_handle_ce(p->dci, 0, 0, msg);
return NOTIFY_OK;
goto err;
}
- register_sifive_l2_error_notifier(&p->notifier);
+ register_sifive_ccache_error_notifier(&p->notifier);
return 0;
{
struct sifive_edac_priv *p = platform_get_drvdata(pdev);
- unregister_sifive_l2_error_notifier(&p->notifier);
+ unregister_sifive_ccache_error_notifier(&p->notifier);
edac_device_del_device(&pdev->dev);
edac_device_free_ctl_info(p->dci);
if SOC_SIFIVE
-config SIFIVE_L2
- bool "Sifive L2 Cache controller"
+config SIFIVE_CCACHE
+ bool "Sifive Composable Cache controller"
help
- Support for the L2 cache controller on SiFive platforms.
+ Support for the composable cache controller on SiFive platforms.
endif
# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_SIFIVE_L2) += sifive_l2_cache.o
+obj-$(CONFIG_SIFIVE_CCACHE) += sifive_ccache.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SiFive composable cache controller Driver
+ *
+ * Copyright (C) 2018-2022 SiFive, Inc.
+ *
+ */
+
+#define pr_fmt(fmt) "CCACHE: " fmt
+
+#include <linux/debugfs.h>
+#include <linux/interrupt.h>
+#include <linux/of_irq.h>
+#include <linux/of_address.h>
+#include <linux/device.h>
+#include <linux/bitfield.h>
+#include <asm/cacheinfo.h>
+#include <soc/sifive/sifive_ccache.h>
+
+#define SIFIVE_CCACHE_DIRECCFIX_LOW 0x100
+#define SIFIVE_CCACHE_DIRECCFIX_HIGH 0x104
+#define SIFIVE_CCACHE_DIRECCFIX_COUNT 0x108
+
+#define SIFIVE_CCACHE_DIRECCFAIL_LOW 0x120
+#define SIFIVE_CCACHE_DIRECCFAIL_HIGH 0x124
+#define SIFIVE_CCACHE_DIRECCFAIL_COUNT 0x128
+
+#define SIFIVE_CCACHE_DATECCFIX_LOW 0x140
+#define SIFIVE_CCACHE_DATECCFIX_HIGH 0x144
+#define SIFIVE_CCACHE_DATECCFIX_COUNT 0x148
+
+#define SIFIVE_CCACHE_DATECCFAIL_LOW 0x160
+#define SIFIVE_CCACHE_DATECCFAIL_HIGH 0x164
+#define SIFIVE_CCACHE_DATECCFAIL_COUNT 0x168
+
+#define SIFIVE_CCACHE_CONFIG 0x00
+#define SIFIVE_CCACHE_CONFIG_BANK_MASK GENMASK_ULL(7, 0)
+#define SIFIVE_CCACHE_CONFIG_WAYS_MASK GENMASK_ULL(15, 8)
+#define SIFIVE_CCACHE_CONFIG_SETS_MASK GENMASK_ULL(23, 16)
+#define SIFIVE_CCACHE_CONFIG_BLKS_MASK GENMASK_ULL(31, 24)
+
+#define SIFIVE_CCACHE_WAYENABLE 0x08
+#define SIFIVE_CCACHE_ECCINJECTERR 0x40
+
+#define SIFIVE_CCACHE_MAX_ECCINTR 4
+
+static void __iomem *ccache_base;
+static int g_irq[SIFIVE_CCACHE_MAX_ECCINTR];
+static struct riscv_cacheinfo_ops ccache_cache_ops;
+static int level;
+
+enum {
+ DIR_CORR = 0,
+ DATA_CORR,
+ DATA_UNCORR,
+ DIR_UNCORR,
+};
+
+#ifdef CONFIG_DEBUG_FS
+static struct dentry *sifive_test;
+
+static ssize_t ccache_write(struct file *file, const char __user *data,
+ size_t count, loff_t *ppos)
+{
+ unsigned int val;
+
+ if (kstrtouint_from_user(data, count, 0, &val))
+ return -EINVAL;
+ if ((val < 0xFF) || (val >= 0x10000 && val < 0x100FF))
+ writel(val, ccache_base + SIFIVE_CCACHE_ECCINJECTERR);
+ else
+ return -EINVAL;
+ return count;
+}
+
+static const struct file_operations ccache_fops = {
+ .owner = THIS_MODULE,
+ .open = simple_open,
+ .write = ccache_write
+};
+
+static void setup_sifive_debug(void)
+{
+ sifive_test = debugfs_create_dir("sifive_ccache_cache", NULL);
+
+ debugfs_create_file("sifive_debug_inject_error", 0200,
+ sifive_test, NULL, &ccache_fops);
+}
+#endif
+
+static void ccache_config_read(void)
+{
+ u32 cfg;
+
+ cfg = readl(ccache_base + SIFIVE_CCACHE_CONFIG);
+ pr_info("%llu banks, %llu ways, sets/bank=%llu, bytes/block=%llu\n",
+ FIELD_GET(SIFIVE_CCACHE_CONFIG_BANK_MASK, cfg),
+ FIELD_GET(SIFIVE_CCACHE_CONFIG_WAYS_MASK, cfg),
+ BIT_ULL(FIELD_GET(SIFIVE_CCACHE_CONFIG_SETS_MASK, cfg)),
+ BIT_ULL(FIELD_GET(SIFIVE_CCACHE_CONFIG_BLKS_MASK, cfg)));
+
+ cfg = readl(ccache_base + SIFIVE_CCACHE_WAYENABLE);
+ pr_info("Index of the largest way enabled: %u\n", cfg);
+}
+
+static const struct of_device_id sifive_ccache_ids[] = {
+ { .compatible = "sifive,fu540-c000-ccache" },
+ { .compatible = "sifive,fu740-c000-ccache" },
+ { .compatible = "sifive,ccache0" },
+ { /* end of table */ }
+};
+
+static ATOMIC_NOTIFIER_HEAD(ccache_err_chain);
+
+int register_sifive_ccache_error_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_register(&ccache_err_chain, nb);
+}
+EXPORT_SYMBOL_GPL(register_sifive_ccache_error_notifier);
+
+int unregister_sifive_ccache_error_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&ccache_err_chain, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_sifive_ccache_error_notifier);
+
+static int ccache_largest_wayenabled(void)
+{
+ return readl(ccache_base + SIFIVE_CCACHE_WAYENABLE) & 0xFF;
+}
+
+static ssize_t number_of_ways_enabled_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%u\n", ccache_largest_wayenabled());
+}
+
+static DEVICE_ATTR_RO(number_of_ways_enabled);
+
+static struct attribute *priv_attrs[] = {
+ &dev_attr_number_of_ways_enabled.attr,
+ NULL,
+};
+
+static const struct attribute_group priv_attr_group = {
+ .attrs = priv_attrs,
+};
+
+static const struct attribute_group *ccache_get_priv_group(struct cacheinfo
+ *this_leaf)
+{
+ /* We want to use private group for composable cache only */
+ if (this_leaf->level == level)
+ return &priv_attr_group;
+ else
+ return NULL;
+}
+
+static irqreturn_t ccache_int_handler(int irq, void *device)
+{
+ unsigned int add_h, add_l;
+
+ if (irq == g_irq[DIR_CORR]) {
+ add_h = readl(ccache_base + SIFIVE_CCACHE_DIRECCFIX_HIGH);
+ add_l = readl(ccache_base + SIFIVE_CCACHE_DIRECCFIX_LOW);
+ pr_err("DirError @ 0x%08X.%08X\n", add_h, add_l);
+ /* Reading this register clears the DirError interrupt sig */
+ readl(ccache_base + SIFIVE_CCACHE_DIRECCFIX_COUNT);
+ atomic_notifier_call_chain(&ccache_err_chain,
+ SIFIVE_CCACHE_ERR_TYPE_CE,
+ "DirECCFix");
+ }
+ if (irq == g_irq[DIR_UNCORR]) {
+ add_h = readl(ccache_base + SIFIVE_CCACHE_DIRECCFAIL_HIGH);
+ add_l = readl(ccache_base + SIFIVE_CCACHE_DIRECCFAIL_LOW);
+ /* Reading this register clears the DirFail interrupt sig */
+ readl(ccache_base + SIFIVE_CCACHE_DIRECCFAIL_COUNT);
+ atomic_notifier_call_chain(&ccache_err_chain,
+ SIFIVE_CCACHE_ERR_TYPE_UE,
+ "DirECCFail");
+ panic("CCACHE: DirFail @ 0x%08X.%08X\n", add_h, add_l);
+ }
+ if (irq == g_irq[DATA_CORR]) {
+ add_h = readl(ccache_base + SIFIVE_CCACHE_DATECCFIX_HIGH);
+ add_l = readl(ccache_base + SIFIVE_CCACHE_DATECCFIX_LOW);
+ pr_err("DataError @ 0x%08X.%08X\n", add_h, add_l);
+ /* Reading this register clears the DataError interrupt sig */
+ readl(ccache_base + SIFIVE_CCACHE_DATECCFIX_COUNT);
+ atomic_notifier_call_chain(&ccache_err_chain,
+ SIFIVE_CCACHE_ERR_TYPE_CE,
+ "DatECCFix");
+ }
+ if (irq == g_irq[DATA_UNCORR]) {
+ add_h = readl(ccache_base + SIFIVE_CCACHE_DATECCFAIL_HIGH);
+ add_l = readl(ccache_base + SIFIVE_CCACHE_DATECCFAIL_LOW);
+ pr_err("DataFail @ 0x%08X.%08X\n", add_h, add_l);
+ /* Reading this register clears the DataFail interrupt sig */
+ readl(ccache_base + SIFIVE_CCACHE_DATECCFAIL_COUNT);
+ atomic_notifier_call_chain(&ccache_err_chain,
+ SIFIVE_CCACHE_ERR_TYPE_UE,
+ "DatECCFail");
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int __init sifive_ccache_init(void)
+{
+ struct device_node *np;
+ struct resource res;
+ int i, rc, intr_num;
+
+ np = of_find_matching_node(NULL, sifive_ccache_ids);
+ if (!np)
+ return -ENODEV;
+
+ if (of_address_to_resource(np, 0, &res))
+ return -ENODEV;
+
+ ccache_base = ioremap(res.start, resource_size(&res));
+ if (!ccache_base)
+ return -ENOMEM;
+
+ if (of_property_read_u32(np, "cache-level", &level))
+ return -ENOENT;
+
+ intr_num = of_property_count_u32_elems(np, "interrupts");
+ if (!intr_num) {
+ pr_err("No interrupts property\n");
+ return -ENODEV;
+ }
+
+ for (i = 0; i < intr_num; i++) {
+ g_irq[i] = irq_of_parse_and_map(np, i);
+ rc = request_irq(g_irq[i], ccache_int_handler, 0, "ccache_ecc",
+ NULL);
+ if (rc) {
+ pr_err("Could not request IRQ %d\n", g_irq[i]);
+ return rc;
+ }
+ }
+
+ ccache_config_read();
+
+ ccache_cache_ops.get_priv_group = ccache_get_priv_group;
+ riscv_set_cacheinfo_ops(&ccache_cache_ops);
+
+#ifdef CONFIG_DEBUG_FS
+ setup_sifive_debug();
+#endif
+ return 0;
+}
+
+device_initcall(sifive_ccache_init);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * SiFive L2 cache controller Driver
- *
- * Copyright (C) 2018-2019 SiFive, Inc.
- *
- */
-#include <linux/debugfs.h>
-#include <linux/interrupt.h>
-#include <linux/of_irq.h>
-#include <linux/of_address.h>
-#include <linux/device.h>
-#include <asm/cacheinfo.h>
-#include <soc/sifive/sifive_l2_cache.h>
-
-#define SIFIVE_L2_DIRECCFIX_LOW 0x100
-#define SIFIVE_L2_DIRECCFIX_HIGH 0x104
-#define SIFIVE_L2_DIRECCFIX_COUNT 0x108
-
-#define SIFIVE_L2_DIRECCFAIL_LOW 0x120
-#define SIFIVE_L2_DIRECCFAIL_HIGH 0x124
-#define SIFIVE_L2_DIRECCFAIL_COUNT 0x128
-
-#define SIFIVE_L2_DATECCFIX_LOW 0x140
-#define SIFIVE_L2_DATECCFIX_HIGH 0x144
-#define SIFIVE_L2_DATECCFIX_COUNT 0x148
-
-#define SIFIVE_L2_DATECCFAIL_LOW 0x160
-#define SIFIVE_L2_DATECCFAIL_HIGH 0x164
-#define SIFIVE_L2_DATECCFAIL_COUNT 0x168
-
-#define SIFIVE_L2_CONFIG 0x00
-#define SIFIVE_L2_WAYENABLE 0x08
-#define SIFIVE_L2_ECCINJECTERR 0x40
-
-#define SIFIVE_L2_MAX_ECCINTR 4
-
-static void __iomem *l2_base;
-static int g_irq[SIFIVE_L2_MAX_ECCINTR];
-static struct riscv_cacheinfo_ops l2_cache_ops;
-
-enum {
- DIR_CORR = 0,
- DATA_CORR,
- DATA_UNCORR,
- DIR_UNCORR,
-};
-
-#ifdef CONFIG_DEBUG_FS
-static struct dentry *sifive_test;
-
-static ssize_t l2_write(struct file *file, const char __user *data,
- size_t count, loff_t *ppos)
-{
- unsigned int val;
-
- if (kstrtouint_from_user(data, count, 0, &val))
- return -EINVAL;
- if ((val < 0xFF) || (val >= 0x10000 && val < 0x100FF))
- writel(val, l2_base + SIFIVE_L2_ECCINJECTERR);
- else
- return -EINVAL;
- return count;
-}
-
-static const struct file_operations l2_fops = {
- .owner = THIS_MODULE,
- .open = simple_open,
- .write = l2_write
-};
-
-static void setup_sifive_debug(void)
-{
- sifive_test = debugfs_create_dir("sifive_l2_cache", NULL);
-
- debugfs_create_file("sifive_debug_inject_error", 0200,
- sifive_test, NULL, &l2_fops);
-}
-#endif
-
-static void l2_config_read(void)
-{
- u32 regval, val;
-
- regval = readl(l2_base + SIFIVE_L2_CONFIG);
- val = regval & 0xFF;
- pr_info("L2CACHE: No. of Banks in the cache: %d\n", val);
- val = (regval & 0xFF00) >> 8;
- pr_info("L2CACHE: No. of ways per bank: %d\n", val);
- val = (regval & 0xFF0000) >> 16;
- pr_info("L2CACHE: Sets per bank: %llu\n", (uint64_t)1 << val);
- val = (regval & 0xFF000000) >> 24;
- pr_info("L2CACHE: Bytes per cache block: %llu\n", (uint64_t)1 << val);
-
- regval = readl(l2_base + SIFIVE_L2_WAYENABLE);
- pr_info("L2CACHE: Index of the largest way enabled: %d\n", regval);
-}
-
-static const struct of_device_id sifive_l2_ids[] = {
- { .compatible = "sifive,fu540-c000-ccache" },
- { .compatible = "sifive,fu740-c000-ccache" },
- { /* end of table */ },
-};
-
-static ATOMIC_NOTIFIER_HEAD(l2_err_chain);
-
-int register_sifive_l2_error_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_register(&l2_err_chain, nb);
-}
-EXPORT_SYMBOL_GPL(register_sifive_l2_error_notifier);
-
-int unregister_sifive_l2_error_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_unregister(&l2_err_chain, nb);
-}
-EXPORT_SYMBOL_GPL(unregister_sifive_l2_error_notifier);
-
-static int l2_largest_wayenabled(void)
-{
- return readl(l2_base + SIFIVE_L2_WAYENABLE) & 0xFF;
-}
-
-static ssize_t number_of_ways_enabled_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%u\n", l2_largest_wayenabled());
-}
-
-static DEVICE_ATTR_RO(number_of_ways_enabled);
-
-static struct attribute *priv_attrs[] = {
- &dev_attr_number_of_ways_enabled.attr,
- NULL,
-};
-
-static const struct attribute_group priv_attr_group = {
- .attrs = priv_attrs,
-};
-
-static const struct attribute_group *l2_get_priv_group(struct cacheinfo *this_leaf)
-{
- /* We want to use private group for L2 cache only */
- if (this_leaf->level == 2)
- return &priv_attr_group;
- else
- return NULL;
-}
-
-static irqreturn_t l2_int_handler(int irq, void *device)
-{
- unsigned int add_h, add_l;
-
- if (irq == g_irq[DIR_CORR]) {
- add_h = readl(l2_base + SIFIVE_L2_DIRECCFIX_HIGH);
- add_l = readl(l2_base + SIFIVE_L2_DIRECCFIX_LOW);
- pr_err("L2CACHE: DirError @ 0x%08X.%08X\n", add_h, add_l);
- /* Reading this register clears the DirError interrupt sig */
- readl(l2_base + SIFIVE_L2_DIRECCFIX_COUNT);
- atomic_notifier_call_chain(&l2_err_chain, SIFIVE_L2_ERR_TYPE_CE,
- "DirECCFix");
- }
- if (irq == g_irq[DIR_UNCORR]) {
- add_h = readl(l2_base + SIFIVE_L2_DIRECCFAIL_HIGH);
- add_l = readl(l2_base + SIFIVE_L2_DIRECCFAIL_LOW);
- /* Reading this register clears the DirFail interrupt sig */
- readl(l2_base + SIFIVE_L2_DIRECCFAIL_COUNT);
- atomic_notifier_call_chain(&l2_err_chain, SIFIVE_L2_ERR_TYPE_UE,
- "DirECCFail");
- panic("L2CACHE: DirFail @ 0x%08X.%08X\n", add_h, add_l);
- }
- if (irq == g_irq[DATA_CORR]) {
- add_h = readl(l2_base + SIFIVE_L2_DATECCFIX_HIGH);
- add_l = readl(l2_base + SIFIVE_L2_DATECCFIX_LOW);
- pr_err("L2CACHE: DataError @ 0x%08X.%08X\n", add_h, add_l);
- /* Reading this register clears the DataError interrupt sig */
- readl(l2_base + SIFIVE_L2_DATECCFIX_COUNT);
- atomic_notifier_call_chain(&l2_err_chain, SIFIVE_L2_ERR_TYPE_CE,
- "DatECCFix");
- }
- if (irq == g_irq[DATA_UNCORR]) {
- add_h = readl(l2_base + SIFIVE_L2_DATECCFAIL_HIGH);
- add_l = readl(l2_base + SIFIVE_L2_DATECCFAIL_LOW);
- pr_err("L2CACHE: DataFail @ 0x%08X.%08X\n", add_h, add_l);
- /* Reading this register clears the DataFail interrupt sig */
- readl(l2_base + SIFIVE_L2_DATECCFAIL_COUNT);
- atomic_notifier_call_chain(&l2_err_chain, SIFIVE_L2_ERR_TYPE_UE,
- "DatECCFail");
- }
-
- return IRQ_HANDLED;
-}
-
-static int __init sifive_l2_init(void)
-{
- struct device_node *np;
- struct resource res;
- int i, rc, intr_num;
-
- np = of_find_matching_node(NULL, sifive_l2_ids);
- if (!np)
- return -ENODEV;
-
- if (of_address_to_resource(np, 0, &res))
- return -ENODEV;
-
- l2_base = ioremap(res.start, resource_size(&res));
- if (!l2_base)
- return -ENOMEM;
-
- intr_num = of_property_count_u32_elems(np, "interrupts");
- if (!intr_num) {
- pr_err("L2CACHE: no interrupts property\n");
- return -ENODEV;
- }
-
- for (i = 0; i < intr_num; i++) {
- g_irq[i] = irq_of_parse_and_map(np, i);
- rc = request_irq(g_irq[i], l2_int_handler, 0, "l2_ecc", NULL);
- if (rc) {
- pr_err("L2CACHE: Could not request IRQ %d\n", g_irq[i]);
- return rc;
- }
- }
-
- l2_config_read();
-
- l2_cache_ops.get_priv_group = l2_get_priv_group;
- riscv_set_cacheinfo_ops(&l2_cache_ops);
-
-#ifdef CONFIG_DEBUG_FS
- setup_sifive_debug();
-#endif
- return 0;
-}
-device_initcall(sifive_l2_init);
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * SiFive Composable Cache Controller header file
+ *
+ */
+
+#ifndef __SOC_SIFIVE_CCACHE_H
+#define __SOC_SIFIVE_CCACHE_H
+
+extern int register_sifive_ccache_error_notifier(struct notifier_block *nb);
+extern int unregister_sifive_ccache_error_notifier(struct notifier_block *nb);
+
+#define SIFIVE_CCACHE_ERR_TYPE_CE 0
+#define SIFIVE_CCACHE_ERR_TYPE_UE 1
+
+#endif /* __SOC_SIFIVE_CCACHE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * SiFive L2 Cache Controller header file
- *
- */
-
-#ifndef __SOC_SIFIVE_L2_CACHE_H
-#define __SOC_SIFIVE_L2_CACHE_H
-
-extern int register_sifive_l2_error_notifier(struct notifier_block *nb);
-extern int unregister_sifive_l2_error_notifier(struct notifier_block *nb);
-
-#define SIFIVE_L2_ERR_TYPE_CE 0
-#define SIFIVE_L2_ERR_TYPE_UE 1
-
-#endif /* __SOC_SIFIVE_L2_CACHE_H */
projects / linux-block.git / commitdiff