diff options
Diffstat (limited to 'drivers/hwtracing')
25 files changed, 164 insertions, 182 deletions
diff --git a/drivers/hwtracing/Kconfig b/drivers/hwtracing/Kconfig new file mode 100644 index 000000000000..f68e025c5131 --- /dev/null +++ b/drivers/hwtracing/Kconfig @@ -0,0 +1,7 @@ +menu "HW tracing support" + +source "drivers/hwtracing/stm/Kconfig" + +source "drivers/hwtracing/intel_th/Kconfig" + +endmenu diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c index 6ea62c62ff27..9cdb3fbc8c1f 100644 --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -315,7 +315,7 @@ static void debug_dump_regs(struct debug_drvdata *drvdata) } pc = debug_adjust_pc(drvdata); - dev_emerg(dev, " EDPCSR: [<%p>] %pS\n", (void *)pc, (void *)pc); + dev_emerg(dev, " EDPCSR: [<%px>] %pS\n", (void *)pc, (void *)pc); if (drvdata->edcidsr_present) dev_emerg(dev, " EDCIDSR: %08x\n", drvdata->edcidsr); diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index 4e6eab53e34e..d21961710713 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -1780,7 +1780,7 @@ static ssize_t ctxid_masks_store(struct device *dev, */ for (j = 0; j < 8; j++) { if (maskbyte & 1) - config->ctxid_pid[i] &= ~(0xFF << (j * 8)); + config->ctxid_pid[i] &= ~(0xFFUL << (j * 8)); maskbyte >>= 1; } /* Select the next ctxid comparator mask value */ @@ -1963,7 +1963,7 @@ static ssize_t vmid_masks_store(struct device *dev, */ for (j = 0; j < 8; j++) { if (maskbyte & 1) - config->vmid_val[i] &= ~(0xFF << (j * 8)); + config->vmid_val[i] &= ~(0xFFUL << (j * 8)); maskbyte >>= 1; } /* Select the next vmid comparator mask value */ diff --git a/drivers/hwtracing/intel_th/Kconfig b/drivers/hwtracing/intel_th/Kconfig index 1b412f8a56b5..ca0527d588e9 100644 --- a/drivers/hwtracing/intel_th/Kconfig +++ b/drivers/hwtracing/intel_th/Kconfig @@ -25,6 +25,18 @@ config INTEL_TH_PCI Say Y here to enable PCI Intel TH support. +config INTEL_TH_ACPI + tristate "Intel(R) Trace Hub ACPI controller" + depends on ACPI + help + Intel(R) Trace Hub may exist as an ACPI device. This option enables + support glue layer for ACPI-based Intel TH. This typically implies + 'host debugger' mode, that is, the trace configuration and capture + is handled by an external debug host and corresponding controls will + not be available on the target. + + Say Y here to enable ACPI Intel TH support. + config INTEL_TH_GTH tristate "Intel(R) Trace Hub Global Trace Hub" help diff --git a/drivers/hwtracing/intel_th/Makefile b/drivers/hwtracing/intel_th/Makefile index 880c9b5e8566..d9252fa8d9ca 100644 --- a/drivers/hwtracing/intel_th/Makefile +++ b/drivers/hwtracing/intel_th/Makefile @@ -6,6 +6,9 @@ intel_th-$(CONFIG_INTEL_TH_DEBUG) += debug.o obj-$(CONFIG_INTEL_TH_PCI) += intel_th_pci.o intel_th_pci-y := pci.o +obj-$(CONFIG_INTEL_TH_ACPI) += intel_th_acpi.o +intel_th_acpi-y := acpi.o + obj-$(CONFIG_INTEL_TH_GTH) += intel_th_gth.o intel_th_gth-y := gth.o diff --git a/drivers/hwtracing/intel_th/acpi.c b/drivers/hwtracing/intel_th/acpi.c new file mode 100644 index 000000000000..87bc3744755f --- /dev/null +++ b/drivers/hwtracing/intel_th/acpi.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Intel(R) Trace Hub ACPI driver + * + * Copyright (C) 2017 Intel Corporation. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/sysfs.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> + +#include "intel_th.h" + +#define DRIVER_NAME "intel_th_acpi" + +static const struct intel_th_drvdata intel_th_acpi_pch = { + .host_mode_only = 1, +}; + +static const struct intel_th_drvdata intel_th_acpi_uncore = { + .host_mode_only = 1, +}; + +static const struct acpi_device_id intel_th_acpi_ids[] = { + { "INTC1000", (kernel_ulong_t)&intel_th_acpi_uncore }, + { "INTC1001", (kernel_ulong_t)&intel_th_acpi_pch }, + { "", 0 }, +}; + +MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids); + +static int intel_th_acpi_probe(struct platform_device *pdev) +{ + struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); + const struct acpi_device_id *id; + struct intel_th *th; + + id = acpi_match_device(intel_th_acpi_ids, &pdev->dev); + if (!id) + return -ENODEV; + + th = intel_th_alloc(&pdev->dev, (void *)id->driver_data, + pdev->resource, pdev->num_resources, -1); + if (IS_ERR(th)) + return PTR_ERR(th); + + adev->driver_data = th; + + return 0; +} + +static int intel_th_acpi_remove(struct platform_device *pdev) +{ + struct intel_th *th = platform_get_drvdata(pdev); + + intel_th_free(th); + + return 0; +} + +static struct platform_driver intel_th_acpi_driver = { + .probe = intel_th_acpi_probe, + .remove = intel_th_acpi_remove, + .driver = { + .name = DRIVER_NAME, + .acpi_match_table = intel_th_acpi_ids, + }, +}; + +module_platform_driver(intel_th_acpi_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver"); +MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>"); diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c index 1a023e30488c..da962aa2cef5 100644 --- a/drivers/hwtracing/intel_th/core.c +++ b/drivers/hwtracing/intel_th/core.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub driver core * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt @@ -638,7 +630,8 @@ intel_th_subdevice_alloc(struct intel_th *th, thdev->output.port = -1; thdev->output.scratchpad = subdev->scrpd; } else if (subdev->type == INTEL_TH_SWITCH) { - thdev->host_mode = host_mode; + thdev->host_mode = + INTEL_TH_CAP(th, host_mode_only) ? true : host_mode; th->hub = thdev; } @@ -737,7 +730,8 @@ static int intel_th_populate(struct intel_th *th) struct intel_th_device *thdev; /* only allow SOURCE and SWITCH devices in host mode */ - if (host_mode && subdev->type == INTEL_TH_OUTPUT) + if ((INTEL_TH_CAP(th, host_mode_only) || host_mode) && + subdev->type == INTEL_TH_OUTPUT) continue; /* @@ -813,7 +807,14 @@ intel_th_alloc(struct device *dev, struct intel_th_drvdata *drvdata, struct resource *devres, unsigned int ndevres, int irq) { struct intel_th *th; - int err; + int err, r; + + if (irq == -1) + for (r = 0; r < ndevres; r++) + if (devres[r].flags & IORESOURCE_IRQ) { + irq = devres[r].start; + break; + } th = kzalloc(sizeof(*th), GFP_KERNEL); if (!th) @@ -935,9 +936,13 @@ EXPORT_SYMBOL_GPL(intel_th_trace_disable); int intel_th_set_output(struct intel_th_device *thdev, unsigned int master) { - struct intel_th_device *hub = to_intel_th_device(thdev->dev.parent); + struct intel_th_device *hub = to_intel_th_hub(thdev); struct intel_th_driver *hubdrv = to_intel_th_driver(hub->dev.driver); + /* In host mode, this is up to the external debugger, do nothing. */ + if (hub->host_mode) + return 0; + if (!hubdrv->set_output) return -ENOTSUPP; diff --git a/drivers/hwtracing/intel_th/debug.c b/drivers/hwtracing/intel_th/debug.c index 788a1f0a97ad..ff79063118a0 100644 --- a/drivers/hwtracing/intel_th/debug.c +++ b/drivers/hwtracing/intel_th/debug.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub driver debugging * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #include <linux/types.h> diff --git a/drivers/hwtracing/intel_th/debug.h b/drivers/hwtracing/intel_th/debug.h index 88311bad3ba4..78bd7e4bf9ce 100644 --- a/drivers/hwtracing/intel_th/debug.h +++ b/drivers/hwtracing/intel_th/debug.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Intel(R) Trace Hub driver debugging * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #ifndef __INTEL_TH_DEBUG_H__ diff --git a/drivers/hwtracing/intel_th/gth.c b/drivers/hwtracing/intel_th/gth.c index 018678ec3c13..8426b7970c14 100644 --- a/drivers/hwtracing/intel_th/gth.c +++ b/drivers/hwtracing/intel_th/gth.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub Global Trace Hub * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/hwtracing/intel_th/gth.h b/drivers/hwtracing/intel_th/gth.h index f3d234251a12..6f2b0b930875 100644 --- a/drivers/hwtracing/intel_th/gth.h +++ b/drivers/hwtracing/intel_th/gth.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Intel(R) Trace Hub Global Trace Hub (GTH) data structures * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #ifndef __INTEL_TH_GTH_H__ diff --git a/drivers/hwtracing/intel_th/intel_th.h b/drivers/hwtracing/intel_th/intel_th.h index 99ad563fc40d..780206dc9012 100644 --- a/drivers/hwtracing/intel_th/intel_th.h +++ b/drivers/hwtracing/intel_th/intel_th.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Intel(R) Trace Hub data structures * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #ifndef __INTEL_TH_H__ @@ -50,9 +42,11 @@ struct intel_th_output { /** * struct intel_th_drvdata - describes hardware capabilities and quirks * @tscu_enable: device needs SW to enable time stamping unit + * @host_mode_only: device can only operate in 'host debugger' mode */ struct intel_th_drvdata { - unsigned int tscu_enable : 1; + unsigned int tscu_enable : 1, + host_mode_only : 1; }; #define INTEL_TH_CAP(_th, _cap) ((_th)->drvdata ? (_th)->drvdata->_cap : 0) diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index dfb57eaa9f22..ede388309376 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub Memory Storage Unit * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/hwtracing/intel_th/msu.h b/drivers/hwtracing/intel_th/msu.h index 9b710e4aa98a..9cc8aced6116 100644 --- a/drivers/hwtracing/intel_th/msu.h +++ b/drivers/hwtracing/intel_th/msu.h @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub Memory Storage Unit (MSU) data structures * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #ifndef __INTEL_TH_MSU_H__ diff --git a/drivers/hwtracing/intel_th/pci.c b/drivers/hwtracing/intel_th/pci.c index c2a2ce8ee541..c2e55e5d97f6 100644 --- a/drivers/hwtracing/intel_th/pci.c +++ b/drivers/hwtracing/intel_th/pci.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub pci driver * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/hwtracing/intel_th/pti.c b/drivers/hwtracing/intel_th/pti.c index e96a1fcb57b2..56694339cb06 100644 --- a/drivers/hwtracing/intel_th/pti.c +++ b/drivers/hwtracing/intel_th/pti.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub PTI output driver * * Copyright (C) 2014-2016 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/hwtracing/intel_th/pti.h b/drivers/hwtracing/intel_th/pti.h index 30827be67b4c..e9381babc84c 100644 --- a/drivers/hwtracing/intel_th/pti.h +++ b/drivers/hwtracing/intel_th/pti.h @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub PTI output data structures * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #ifndef __INTEL_TH_STH_H__ diff --git a/drivers/hwtracing/intel_th/sth.c b/drivers/hwtracing/intel_th/sth.c index b03444624648..4b7ae47789d2 100644 --- a/drivers/hwtracing/intel_th/sth.c +++ b/drivers/hwtracing/intel_th/sth.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Intel(R) Trace Hub Software Trace Hub support * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt diff --git a/drivers/hwtracing/intel_th/sth.h b/drivers/hwtracing/intel_th/sth.h index f1390cd4f2ed..f97fc0c51739 100644 --- a/drivers/hwtracing/intel_th/sth.h +++ b/drivers/hwtracing/intel_th/sth.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Intel(R) Trace Hub Software Trace Hub (STH) data structures * * Copyright (C) 2014-2015 Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #ifndef __INTEL_TH_STH_H__ diff --git a/drivers/hwtracing/stm/console.c b/drivers/hwtracing/stm/console.c index c9d9a8d2ff52..a00f65e21747 100644 --- a/drivers/hwtracing/stm/console.c +++ b/drivers/hwtracing/stm/console.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Simple kernel console driver for STM devices * Copyright (c) 2014, Intel Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * * STM console will send kernel messages over STM devices to a trace host. */ diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c index f129869e05a9..05386b76465e 100644 --- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * System Trace Module (STM) infrastructure * Copyright (c) 2014, Intel Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * * STM class implements generic infrastructure for System Trace Module devices * as defined in MIPI STPv2 specification. */ diff --git a/drivers/hwtracing/stm/dummy_stm.c b/drivers/hwtracing/stm/dummy_stm.c index c5f94ca31c4d..38528ffdc0b3 100644 --- a/drivers/hwtracing/stm/dummy_stm.c +++ b/drivers/hwtracing/stm/dummy_stm.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * A dummy STM device for stm/stm_source class testing. * Copyright (c) 2014, Intel Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * * STM class implements generic infrastructure for System Trace Module devices * as defined in MIPI STPv2 specification. */ @@ -20,6 +12,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/stm.h> +#include <uapi/linux/stm.h> static ssize_t notrace dummy_stm_packet(struct stm_data *stm_data, unsigned int master, @@ -52,6 +45,18 @@ static unsigned int fail_mode; module_param(fail_mode, int, 0600); +static unsigned int master_min; + +module_param(master_min, int, 0400); + +static unsigned int master_max = STP_MASTER_MAX; + +module_param(master_max, int, 0400); + +static unsigned int nr_channels = STP_CHANNEL_MAX; + +module_param(nr_channels, int, 0400); + static int dummy_stm_link(struct stm_data *data, unsigned int master, unsigned int channel) { @@ -68,14 +73,19 @@ static int dummy_stm_init(void) if (nr_dummies < 0 || nr_dummies > DUMMY_STM_MAX) return -EINVAL; + if (master_min > master_max || + master_max > STP_MASTER_MAX || + nr_channels > STP_CHANNEL_MAX) + return -EINVAL; + for (i = 0; i < nr_dummies; i++) { dummy_stm[i].name = kasprintf(GFP_KERNEL, "dummy_stm.%d", i); if (!dummy_stm[i].name) goto fail_unregister; - dummy_stm[i].sw_start = 0x0000; - dummy_stm[i].sw_end = 0xffff; - dummy_stm[i].sw_nchannels = 0xffff; + dummy_stm[i].sw_start = master_min; + dummy_stm[i].sw_end = master_max; + dummy_stm[i].sw_nchannels = nr_channels; dummy_stm[i].packet = dummy_stm_packet; dummy_stm[i].link = dummy_stm_link; diff --git a/drivers/hwtracing/stm/heartbeat.c b/drivers/hwtracing/stm/heartbeat.c index 3da7b673aab2..7db42395e131 100644 --- a/drivers/hwtracing/stm/heartbeat.c +++ b/drivers/hwtracing/stm/heartbeat.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Simple heartbeat STM source driver * Copyright (c) 2016, Intel Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * * Heartbeat STM source will send repetitive messages over STM devices to a * trace host. */ diff --git a/drivers/hwtracing/stm/policy.c b/drivers/hwtracing/stm/policy.c index 33e9a1b6ea7c..3fd07e275b34 100644 --- a/drivers/hwtracing/stm/policy.c +++ b/drivers/hwtracing/stm/policy.c @@ -1,16 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * System Trace Module (STM) master/channel allocation policy management * Copyright (c) 2014, Intel Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * * A master/channel allocation policy allows mapping string identifiers to * master and channel ranges, where allocation can be done. */ diff --git a/drivers/hwtracing/stm/stm.h b/drivers/hwtracing/stm/stm.h index 4e8c6926260f..923571adc6f4 100644 --- a/drivers/hwtracing/stm/stm.h +++ b/drivers/hwtracing/stm/stm.h @@ -1,16 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * System Trace Module (STM) infrastructure * Copyright (c) 2014, Intel Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * * STM class implements generic infrastructure for System Trace Module devices * as defined in MIPI STPv2 specification. */ |