diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0447-staging-vc04_services-Use-correct-cache-line-size.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0447-staging-vc04_services-Use-correct-cache-line-size.patch | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0447-staging-vc04_services-Use-correct-cache-line-size.patch b/target/linux/bcm27xx/patches-4.19/950-0447-staging-vc04_services-Use-correct-cache-line-size.patch deleted file mode 100644 index c6b0606087..0000000000 --- a/target/linux/bcm27xx/patches-4.19/950-0447-staging-vc04_services-Use-correct-cache-line-size.patch +++ /dev/null @@ -1,135 +0,0 @@ -From 63079fbe20c954140f8eb61f858b0774890f301c Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Mon, 17 Sep 2018 09:22:21 +0100 -Subject: [PATCH] staging/vc04_services: Use correct cache line size - -Use the compatible string in the DTB to select the correct cache line -size for the SoC - 32 for BCM2835, and 64 for BCM2836 and BCM2837. - -Signed-off-by: Phil Elwell <phil@raspberrypi.org> -Tested-by: Stefan Wahren <stefan.wahren@i2se.com> -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - .../interface/vchiq_arm/vchiq_2835_arm.c | 15 ++------ - .../interface/vchiq_arm/vchiq_arm.c | 35 +++++++++++++------ - .../interface/vchiq_arm/vchiq_arm.h | 5 +++ - 3 files changed, 33 insertions(+), 22 deletions(-) - ---- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c -+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c -@@ -117,7 +117,8 @@ free_pagelist(struct vchiq_pagelist_info - int vchiq_platform_init(struct platform_device *pdev, VCHIQ_STATE_T *state) - { - struct device *dev = &pdev->dev; -- struct rpi_firmware *fw = platform_get_drvdata(pdev); -+ struct vchiq_drvdata *drvdata = platform_get_drvdata(pdev); -+ struct rpi_firmware *fw = drvdata->fw; - VCHIQ_SLOT_ZERO_T *vchiq_slot_zero; - struct resource *res; - void *slot_mem; -@@ -135,17 +136,7 @@ int vchiq_platform_init(struct platform_ - if (err < 0) - return err; - -- /* -- * The tempting L1_CACHE_BYTES macro doesn't work in the case of -- * a kernel built with bcm2835_defconfig running on a BCM2836/7 -- * processor, hence the need for a runtime check. The dcache line size -- * is encoded in one of the coprocessor registers, but there is no -- * convenient way to access it short of embedded assembler, hence -- * the use of read_cpuid_id(). The following test evaluates to true -- * on a BCM2835 showing that it is ARMv6-ish, whereas -- * cpu_architecture() will indicate that it is an ARMv7. -- */ -- g_cache_line_size = ((read_cpuid_id() & 0x7f000) == 0x7b000) ? 32 : 64; -+ g_cache_line_size = drvdata->cache_line_size; - g_fragments_size = 2 * g_cache_line_size; - - /* Allocate space for the channels in coherent memory */ ---- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c -+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c -@@ -173,6 +173,14 @@ static struct platform_device *bcm2835_c - static struct platform_device *bcm2835_codec; - static struct platform_device *vcsm_cma; - -+static struct vchiq_drvdata bcm2835_drvdata = { -+ .cache_line_size = 32, -+}; -+ -+static struct vchiq_drvdata bcm2836_drvdata = { -+ .cache_line_size = 64, -+}; -+ - static const char *const ioctl_names[] = { - "CONNECT", - "SHUTDOWN", -@@ -3607,12 +3615,25 @@ vchiq_register_child(struct platform_dev - return new_dev; - } - -+static const struct of_device_id vchiq_of_match[] = { -+ { .compatible = "brcm,bcm2835-vchiq", .data = &bcm2835_drvdata }, -+ { .compatible = "brcm,bcm2836-vchiq", .data = &bcm2836_drvdata }, -+ {}, -+}; -+MODULE_DEVICE_TABLE(of, vchiq_of_match); -+ - static int vchiq_probe(struct platform_device *pdev) - { - struct device_node *fw_node; -- struct rpi_firmware *fw; -+ const struct of_device_id *of_id; -+ struct vchiq_drvdata *drvdata; - int err; - -+ of_id = of_match_node(vchiq_of_match, pdev->dev.of_node); -+ drvdata = (struct vchiq_drvdata *)of_id->data; -+ if (!drvdata) -+ return -EINVAL; -+ - fw_node = of_find_compatible_node(NULL, NULL, - "raspberrypi,bcm2835-firmware"); - if (!fw_node) { -@@ -3620,12 +3641,12 @@ static int vchiq_probe(struct platform_d - return -ENOENT; - } - -- fw = rpi_firmware_get(fw_node); -+ drvdata->fw = rpi_firmware_get(fw_node); - of_node_put(fw_node); -- if (!fw) -+ if (!drvdata->fw) - return -EPROBE_DEFER; - -- platform_set_drvdata(pdev, fw); -+ platform_set_drvdata(pdev, drvdata); - - err = vchiq_platform_init(pdev, &g_state); - if (err != 0) -@@ -3703,12 +3724,6 @@ static int vchiq_remove(struct platform_ - return 0; - } - --static const struct of_device_id vchiq_of_match[] = { -- { .compatible = "brcm,bcm2835-vchiq", }, -- {}, --}; --MODULE_DEVICE_TABLE(of, vchiq_of_match); -- - static struct platform_driver vchiq_driver = { - .driver = { - .name = "bcm2835_vchiq", ---- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h -+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h -@@ -123,6 +123,11 @@ typedef struct vchiq_arm_state_struct { - - } VCHIQ_ARM_STATE_T; - -+struct vchiq_drvdata { -+ const unsigned int cache_line_size; -+ struct rpi_firmware *fw; -+}; -+ - extern int vchiq_arm_log_level; - extern int vchiq_susp_log_level; - |