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authorLinus Torvalds <torvalds@linux-foundation.org>2018-11-01 08:42:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-11-01 08:42:21 -0700
commiteb7046e9bf466cebfcfbcdf640e41d9e3a80086c (patch)
tree7d998f56e306de4c1a78355f219e38b75cfe3866 /drivers/firmware
parent5b7449810ae6d652629c550d3974c8453836d229 (diff)
parent3b692c55e58d06ba9b17c66784cab5a95ba5be9b (diff)
Merge tag 'platform-drivers-x86-v4.20-1' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart: - Move the Dell dcdbas and dell_rbu drivers into platform/drivers/x86 as they are closely coupled with other drivers in this location. - Improve _init* usage for acerhdf and fix some usage issues with messages and module parameters. - Simplify asus-wmi by calling ACPI/WMI methods directly, eliminating workqueue overhead, eliminate double reporting of keyboard backlight. - Fix wake from USB failure on Bay Trail devices (intel_int0002_vgpio). - Notify intel_telemetry users when IPC1 device is not enabled. - Update various drivers with new laptop model IDs. - Update several intel drivers to use SPDX identifers and order headers alphabetically. * tag 'platform-drivers-x86-v4.20-1' of git://git.infradead.org/linux-platform-drivers-x86: (64 commits) HID: asus: only support backlight when it's not driven by WMI platform/x86: asus-wmi: export function for evaluating WMI methods platform/x86: asus-wmi: Only notify kbd LED hw_change by fn-key pressed platform/x86: wmi: declare device_type structure as constant platform/x86: ideapad: Add Y530-15ICH to no_hw_rfkill platform/x86: Add Intel AtomISP2 dummy / power-management driver platform/x86: touchscreen_dmi: Add min-x and min-y settings for various models platform/x86: touchscreen_dmi: Add info for the Onda V80 Plus v3 tablet platform/x86: touchscreen_dmi: Add info for the Trekstor Primetab T13B tablet platform/x86: intel_telemetry: Get rid of custom macro platform/x86: intel_telemetry: report debugfs failure MAINTAINERS: intel_telemetry: Update maintainers info platform/x86: Add LG Gram laptop special features driver platform/x86: asus-wmi: Simplify the keyboard brightness updating process platform/x86: touchscreen_dmi: Add info for the Trekstor Primebook C11 convertible platform/x86: mlx-platform: Properly use mlxplat_mlxcpld_msn201x_items MAINTAINERS: intel_pmc_core: Update MAINTAINERS firmware: dcdbas: include linux/io.h platform/x86: intel-wmi-thunderbolt: Add dynamic debugging platform/x86: intel-wmi-thunderbolt: Convert to use SPDX identifier ...
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/Kconfig28
-rw-r--r--drivers/firmware/Makefile2
-rw-r--r--drivers/firmware/dcdbas.c650
-rw-r--r--drivers/firmware/dcdbas.h107
-rw-r--r--drivers/firmware/dell_rbu.c745
5 files changed, 0 insertions, 1532 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 7670e8dda829..7273e5082b41 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -145,34 +145,6 @@ config EFI_PCDP
See DIG64_HCDPv20_042804.pdf available from
<http://www.dig64.org/specifications/>
-config DELL_RBU
- tristate "BIOS update support for DELL systems via sysfs"
- depends on X86
- select FW_LOADER
- select FW_LOADER_USER_HELPER
- help
- Say m if you want to have the option of updating the BIOS for your
- DELL system. Note you need a Dell OpenManage or Dell Update package (DUP)
- supporting application to communicate with the BIOS regarding the new
- image for the image update to take effect.
- See <file:Documentation/dell_rbu.txt> for more details on the driver.
-
-config DCDBAS
- tristate "Dell Systems Management Base Driver"
- depends on X86
- help
- The Dell Systems Management Base Driver provides a sysfs interface
- for systems management software to perform System Management
- Interrupts (SMIs) and Host Control Actions (system power cycle or
- power off after OS shutdown) on certain Dell systems.
-
- See <file:Documentation/dcdbas.txt> for more details on the driver
- and the Dell systems on which Dell systems management software makes
- use of this driver.
-
- Say Y or M here to enable the driver for use by Dell systems
- management software such as Dell OpenManage.
-
config DMIID
bool "Export DMI identification via sysfs to userspace"
depends on DMI
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 13660a951437..3158dffd9914 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -11,8 +11,6 @@ obj-$(CONFIG_DMI) += dmi_scan.o
obj-$(CONFIG_DMI_SYSFS) += dmi-sysfs.o
obj-$(CONFIG_EDD) += edd.o
obj-$(CONFIG_EFI_PCDP) += pcdp.o
-obj-$(CONFIG_DELL_RBU) += dell_rbu.o
-obj-$(CONFIG_DCDBAS) += dcdbas.o
obj-$(CONFIG_DMIID) += dmi-id.o
obj-$(CONFIG_ISCSI_IBFT_FIND) += iscsi_ibft_find.o
obj-$(CONFIG_ISCSI_IBFT) += iscsi_ibft.o
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c
deleted file mode 100644
index 0bdea60c65dd..000000000000
--- a/drivers/firmware/dcdbas.c
+++ /dev/null
@@ -1,650 +0,0 @@
-/*
- * dcdbas.c: Dell Systems Management Base Driver
- *
- * The Dell Systems Management Base Driver provides a sysfs interface for
- * systems management software to perform System Management Interrupts (SMIs)
- * and Host Control Actions (power cycle or power off after OS shutdown) on
- * Dell systems.
- *
- * See Documentation/dcdbas.txt for more information.
- *
- * Copyright (C) 1995-2006 Dell Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License v2.0 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that 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/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/errno.h>
-#include <linux/cpu.h>
-#include <linux/gfp.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/mc146818rtc.h>
-#include <linux/module.h>
-#include <linux/reboot.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/mutex.h>
-#include <asm/io.h>
-
-#include "dcdbas.h"
-
-#define DRIVER_NAME "dcdbas"
-#define DRIVER_VERSION "5.6.0-3.2"
-#define DRIVER_DESCRIPTION "Dell Systems Management Base Driver"
-
-static struct platform_device *dcdbas_pdev;
-
-static u8 *smi_data_buf;
-static dma_addr_t smi_data_buf_handle;
-static unsigned long smi_data_buf_size;
-static u32 smi_data_buf_phys_addr;
-static DEFINE_MUTEX(smi_data_lock);
-
-static unsigned int host_control_action;
-static unsigned int host_control_smi_type;
-static unsigned int host_control_on_shutdown;
-
-/**
- * smi_data_buf_free: free SMI data buffer
- */
-static void smi_data_buf_free(void)
-{
- if (!smi_data_buf)
- return;
-
- dev_dbg(&dcdbas_pdev->dev, "%s: phys: %x size: %lu\n",
- __func__, smi_data_buf_phys_addr, smi_data_buf_size);
-
- dma_free_coherent(&dcdbas_pdev->dev, smi_data_buf_size, smi_data_buf,
- smi_data_buf_handle);
- smi_data_buf = NULL;
- smi_data_buf_handle = 0;
- smi_data_buf_phys_addr = 0;
- smi_data_buf_size = 0;
-}
-
-/**
- * smi_data_buf_realloc: grow SMI data buffer if needed
- */
-static int smi_data_buf_realloc(unsigned long size)
-{
- void *buf;
- dma_addr_t handle;
-
- if (smi_data_buf_size >= size)
- return 0;
-
- if (size > MAX_SMI_DATA_BUF_SIZE)
- return -EINVAL;
-
- /* new buffer is needed */
- buf = dma_alloc_coherent(&dcdbas_pdev->dev, size, &handle, GFP_KERNEL);
- if (!buf) {
- dev_dbg(&dcdbas_pdev->dev,
- "%s: failed to allocate memory size %lu\n",
- __func__, size);
- return -ENOMEM;
- }
- /* memory zeroed by dma_alloc_coherent */
-
- if (smi_data_buf)
- memcpy(buf, smi_data_buf, smi_data_buf_size);
-
- /* free any existing buffer */
- smi_data_buf_free();
-
- /* set up new buffer for use */
- smi_data_buf = buf;
- smi_data_buf_handle = handle;
- smi_data_buf_phys_addr = (u32) virt_to_phys(buf);
- smi_data_buf_size = size;
-
- dev_dbg(&dcdbas_pdev->dev, "%s: phys: %x size: %lu\n",
- __func__, smi_data_buf_phys_addr, smi_data_buf_size);
-
- return 0;
-}
-
-static ssize_t smi_data_buf_phys_addr_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%x\n", smi_data_buf_phys_addr);
-}
-
-static ssize_t smi_data_buf_size_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%lu\n", smi_data_buf_size);
-}
-
-static ssize_t smi_data_buf_size_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- unsigned long buf_size;
- ssize_t ret;
-
- buf_size = simple_strtoul(buf, NULL, 10);
-
- /* make sure SMI data buffer is at least buf_size */
- mutex_lock(&smi_data_lock);
- ret = smi_data_buf_realloc(buf_size);
- mutex_unlock(&smi_data_lock);
- if (ret)
- return ret;
-
- return count;
-}
-
-static ssize_t smi_data_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t pos, size_t count)
-{
- ssize_t ret;
-
- mutex_lock(&smi_data_lock);
- ret = memory_read_from_buffer(buf, count, &pos, smi_data_buf,
- smi_data_buf_size);
- mutex_unlock(&smi_data_lock);
- return ret;
-}
-
-static ssize_t smi_data_write(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t pos, size_t count)
-{
- ssize_t ret;
-
- if ((pos + count) > MAX_SMI_DATA_BUF_SIZE)
- return -EINVAL;
-
- mutex_lock(&smi_data_lock);
-
- ret = smi_data_buf_realloc(pos + count);
- if (ret)
- goto out;
-
- memcpy(smi_data_buf + pos, buf, count);
- ret = count;
-out:
- mutex_unlock(&smi_data_lock);
- return ret;
-}
-
-static ssize_t host_control_action_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%u\n", host_control_action);
-}
-
-static ssize_t host_control_action_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- ssize_t ret;
-
- /* make sure buffer is available for host control command */
- mutex_lock(&smi_data_lock);
- ret = smi_data_buf_realloc(sizeof(struct apm_cmd));
- mutex_unlock(&smi_data_lock);
- if (ret)
- return ret;
-
- host_control_action = simple_strtoul(buf, NULL, 10);
- return count;
-}
-
-static ssize_t host_control_smi_type_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%u\n", host_control_smi_type);
-}
-
-static ssize_t host_control_smi_type_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- host_control_smi_type = simple_strtoul(buf, NULL, 10);
- return count;
-}
-
-static ssize_t host_control_on_shutdown_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%u\n", host_control_on_shutdown);
-}
-
-static ssize_t host_control_on_shutdown_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- host_control_on_shutdown = simple_strtoul(buf, NULL, 10);
- return count;
-}
-
-static int raise_smi(void *par)
-{
- struct smi_cmd *smi_cmd = par;
-
- if (smp_processor_id() != 0) {
- dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
- __func__);
- return -EBUSY;
- }
-
- /* generate SMI */
- /* inb to force posted write through and make SMI happen now */
- asm volatile (
- "outb %b0,%w1\n"
- "inb %w1"
- : /* no output args */
- : "a" (smi_cmd->command_code),
- "d" (smi_cmd->command_address),
- "b" (smi_cmd->ebx),
- "c" (smi_cmd->ecx)
- : "memory"
- );
-
- return 0;
-}
-/**
- * dcdbas_smi_request: generate SMI request
- *
- * Called with smi_data_lock.
- */
-int dcdbas_smi_request(struct smi_cmd *smi_cmd)
-{
- int ret;
-
- if (smi_cmd->magic != SMI_CMD_MAGIC) {
- dev_info(&dcdbas_pdev->dev, "%s: invalid magic value\n",
- __func__);
- return -EBADR;
- }
-
- /* SMI requires CPU 0 */
- get_online_cpus();
- ret = smp_call_on_cpu(0, raise_smi, smi_cmd, true);
- put_online_cpus();
-
- return ret;
-}
-
-/**
- * smi_request_store:
- *
- * The valid values are:
- * 0: zero SMI data buffer
- * 1: generate calling interface SMI
- * 2: generate raw SMI
- *
- * User application writes smi_cmd to smi_data before telling driver
- * to generate SMI.
- */
-static ssize_t smi_request_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct smi_cmd *smi_cmd;
- unsigned long val = simple_strtoul(buf, NULL, 10);
- ssize_t ret;
-
- mutex_lock(&smi_data_lock);
-
- if (smi_data_buf_size < sizeof(struct smi_cmd)) {
- ret = -ENODEV;
- goto out;
- }
- smi_cmd = (struct smi_cmd *)smi_data_buf;
-
- switch (val) {
- case 2:
- /* Raw SMI */
- ret = dcdbas_smi_request(smi_cmd);
- if (!ret)
- ret = count;
- break;
- case 1:
- /* Calling Interface SMI */
- smi_cmd->ebx = (u32) virt_to_phys(smi_cmd->command_buffer);
- ret = dcdbas_smi_request(smi_cmd);
- if (!ret)
- ret = count;
- break;
- case 0:
- memset(smi_data_buf, 0, smi_data_buf_size);
- ret = count;
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
-out:
- mutex_unlock(&smi_data_lock);
- return ret;
-}
-EXPORT_SYMBOL(dcdbas_smi_request);
-
-/**
- * host_control_smi: generate host control SMI
- *
- * Caller must set up the host control command in smi_data_buf.
- */
-static int host_control_smi(void)
-{
- struct apm_cmd *apm_cmd;
- u8 *data;
- unsigned long flags;
- u32 num_ticks;
- s8 cmd_status;
- u8 index;
-
- apm_cmd = (struct apm_cmd *)smi_data_buf;
- apm_cmd->status = ESM_STATUS_CMD_UNSUCCESSFUL;
-
- switch (host_control_smi_type) {
- case HC_SMITYPE_TYPE1:
- spin_lock_irqsave(&rtc_lock, flags);
- /* write SMI data buffer physical address */
- data = (u8 *)&smi_data_buf_phys_addr;
- for (index = PE1300_CMOS_CMD_STRUCT_PTR;
- index < (PE1300_CMOS_CMD_STRUCT_PTR + 4);
- index++, data++) {
- outb(index,
- (CMOS_BASE_PORT + CMOS_PAGE2_INDEX_PORT_PIIX4));
- outb(*data,
- (CMOS_BASE_PORT + CMOS_PAGE2_DATA_PORT_PIIX4));
- }
-
- /* first set status to -1 as called by spec */
- cmd_status = ESM_STATUS_CMD_UNSUCCESSFUL;
- outb((u8) cmd_status, PCAT_APM_STATUS_PORT);
-
- /* generate SMM call */
- outb(ESM_APM_CMD, PCAT_APM_CONTROL_PORT);
- spin_unlock_irqrestore(&rtc_lock, flags);
-
- /* wait a few to see if it executed */
- num_ticks = TIMEOUT_USEC_SHORT_SEMA_BLOCKING;
- while ((cmd_status = inb(PCAT_APM_STATUS_PORT))
- == ESM_STATUS_CMD_UNSUCCESSFUL) {
- num_ticks--;
- if (num_ticks == EXPIRED_TIMER)
- return -ETIME;
- }
- break;
-
- case HC_SMITYPE_TYPE2:
- case HC_SMITYPE_TYPE3:
- spin_lock_irqsave(&rtc_lock, flags);
- /* write SMI data buffer physical address */
- data = (u8 *)&smi_data_buf_phys_addr;
- for (index = PE1400_CMOS_CMD_STRUCT_PTR;
- index < (PE1400_CMOS_CMD_STRUCT_PTR + 4);
- index++, data++) {
- outb(index, (CMOS_BASE_PORT + CMOS_PAGE1_INDEX_PORT));
- outb(*data, (CMOS_BASE_PORT + CMOS_PAGE1_DATA_PORT));
- }
-
- /* generate SMM call */
- if (host_control_smi_type == HC_SMITYPE_TYPE3)
- outb(ESM_APM_CMD, PCAT_APM_CONTROL_PORT);
- else
- outb(ESM_APM_CMD, PE1400_APM_CONTROL_PORT);
-
- /* restore RTC index pointer since it was written to above */
- CMOS_READ(RTC_REG_C);
- spin_unlock_irqrestore(&rtc_lock, flags);
-
- /* read control port back to serialize write */
- cmd_status = inb(PE1400_APM_CONTROL_PORT);
-
- /* wait a few to see if it executed */
- num_ticks = TIMEOUT_USEC_SHORT_SEMA_BLOCKING;
- while (apm_cmd->status == ESM_STATUS_CMD_UNSUCCESSFUL) {
- num_ticks--;
- if (num_ticks == EXPIRED_TIMER)
- return -ETIME;
- }
- break;
-
- default:
- dev_dbg(&dcdbas_pdev->dev, "%s: invalid SMI type %u\n",
- __func__, host_control_smi_type);
- return -ENOSYS;
- }
-
- return 0;
-}
-
-/**
- * dcdbas_host_control: initiate host control
- *
- * This function is called by the driver after the system has
- * finished shutting down if the user application specified a
- * host control action to perform on shutdown. It is safe to
- * use smi_data_buf at this point because the system has finished
- * shutting down and no userspace apps are running.
- */
-static void dcdbas_host_control(void)
-{
- struct apm_cmd *apm_cmd;
- u8 action;
-
- if (host_control_action == HC_ACTION_NONE)
- return;
-
- action = host_control_action;
- host_control_action = HC_ACTION_NONE;
-
- if (!smi_data_buf) {
- dev_dbg(&dcdbas_pdev->dev, "%s: no SMI buffer\n", __func__);
- return;
- }
-
- if (smi_data_buf_size < sizeof(struct apm_cmd)) {
- dev_dbg(&dcdbas_pdev->dev, "%s: SMI buffer too small\n",
- __func__);
- return;
- }
-
- apm_cmd = (struct apm_cmd *)smi_data_buf;
-
- /* power off takes precedence */
- if (action & HC_ACTION_HOST_CONTROL_POWEROFF) {
- apm_cmd->command = ESM_APM_POWER_CYCLE;
- apm_cmd->reserved = 0;
- *((s16 *)&apm_cmd->parameters.shortreq.parm[0]) = (s16) 0;
- host_control_smi();
- } else if (action & HC_ACTION_HOST_CONTROL_POWERCYCLE) {
- apm_cmd->command = ESM_APM_POWER_CYCLE;
- apm_cmd->reserved = 0;
- *((s16 *)&apm_cmd->parameters.shortreq.parm[0]) = (s16) 20;
- host_control_smi();
- }
-}
-
-/**
- * dcdbas_reboot_notify: handle reboot notification for host control
- */
-static int dcdbas_reboot_notify(struct notifier_block *nb, unsigned long code,
- void *unused)
-{
- switch (code) {
- case SYS_DOWN:
- case SYS_HALT:
- case SYS_POWER_OFF:
- if (host_control_on_shutdown) {
- /* firmware is going to perform host control action */
- printk(KERN_WARNING "Please wait for shutdown "
- "action to complete...\n");
- dcdbas_host_control();
- }
- break;
- }
-
- return NOTIFY_DONE;
-}
-
-static struct notifier_block dcdbas_reboot_nb = {
- .notifier_call = dcdbas_reboot_notify,
- .next = NULL,
- .priority = INT_MIN
-};
-
-static DCDBAS_BIN_ATTR_RW(smi_data);
-
-static struct bin_attribute *dcdbas_bin_attrs[] = {
- &bin_attr_smi_data,
- NULL
-};
-
-static DCDBAS_DEV_ATTR_RW(smi_data_buf_size);
-static DCDBAS_DEV_ATTR_RO(smi_data_buf_phys_addr);
-static DCDBAS_DEV_ATTR_WO(smi_request);
-static DCDBAS_DEV_ATTR_RW(host_control_action);
-static DCDBAS_DEV_ATTR_RW(host_control_smi_type);
-static DCDBAS_DEV_ATTR_RW(host_control_on_shutdown);
-
-static struct attribute *dcdbas_dev_attrs[] = {
- &dev_attr_smi_data_buf_size.attr,
- &dev_attr_smi_data_buf_phys_addr.attr,
- &dev_attr_smi_request.attr,
- &dev_attr_host_control_action.attr,
- &dev_attr_host_control_smi_type.attr,
- &dev_attr_host_control_on_shutdown.attr,
- NULL
-};
-
-static const struct attribute_group dcdbas_attr_group = {
- .attrs = dcdbas_dev_attrs,
- .bin_attrs = dcdbas_bin_attrs,
-};
-
-static int dcdbas_probe(struct platform_device *dev)
-{
- int error;
-
- host_control_action = HC_ACTION_NONE;
- host_control_smi_type = HC_SMITYPE_NONE;
-
- dcdbas_pdev = dev;
-
- /*
- * BIOS SMI calls require buffer addresses be in 32-bit address space.
- * This is done by setting the DMA mask below.
- */
- error = dma_set_coherent_mask(&dcdbas_pdev->dev, DMA_BIT_MASK(32));
- if (error)
- return error;
-
- error = sysfs_create_group(&dev->dev.kobj, &dcdbas_attr_group);
- if (error)
- return error;
-
- register_reboot_notifier(&dcdbas_reboot_nb);
-
- dev_info(&dev->dev, "%s (version %s)\n",
- DRIVER_DESCRIPTION, DRIVER_VERSION);
-
- return 0;
-}
-
-static int dcdbas_remove(struct platform_device *dev)
-{
- unregister_reboot_notifier(&dcdbas_reboot_nb);
- sysfs_remove_group(&dev->dev.kobj, &dcdbas_attr_group);
-
- return 0;
-}
-
-static struct platform_driver dcdbas_driver = {
- .driver = {
- .name = DRIVER_NAME,
- },
- .probe = dcdbas_probe,
- .remove = dcdbas_remove,
-};
-
-static const struct platform_device_info dcdbas_dev_info __initconst = {
- .name = DRIVER_NAME,
- .id = -1,
- .dma_mask = DMA_BIT_MASK(32),
-};
-
-static struct platform_device *dcdbas_pdev_reg;
-
-/**
- * dcdbas_init: initialize driver
- */
-static int __init dcdbas_init(void)
-{
- int error;
-
- error = platform_driver_register(&dcdbas_driver);
- if (error)
- return error;
-
- dcdbas_pdev_reg = platform_device_register_full(&dcdbas_dev_info);
- if (IS_ERR(dcdbas_pdev_reg)) {
- error = PTR_ERR(dcdbas_pdev_reg);
- goto err_unregister_driver;
- }
-
- return 0;
-
- err_unregister_driver:
- platform_driver_unregister(&dcdbas_driver);
- return error;
-}
-
-/**
- * dcdbas_exit: perform driver cleanup
- */
-static void __exit dcdbas_exit(void)
-{
- /*
- * make sure functions that use dcdbas_pdev are called
- * before platform_device_unregister
- */
- unregister_reboot_notifier(&dcdbas_reboot_nb);
-
- /*
- * We have to free the buffer here instead of dcdbas_remove
- * because only in module exit function we can be sure that
- * all sysfs attributes belonging to this module have been
- * released.
- */
- if (dcdbas_pdev)
- smi_data_buf_free();
- platform_device_unregister(dcdbas_pdev_reg);
- platform_driver_unregister(&dcdbas_driver);
-}
-
-subsys_initcall_sync(dcdbas_init);
-module_exit(dcdbas_exit);
-
-MODULE_DESCRIPTION(DRIVER_DESCRIPTION " (version " DRIVER_VERSION ")");
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_AUTHOR("Dell Inc.");
-MODULE_LICENSE("GPL");
-/* Any System or BIOS claiming to be by Dell */
-MODULE_ALIAS("dmi:*:[bs]vnD[Ee][Ll][Ll]*:*");
diff --git a/drivers/firmware/dcdbas.h b/drivers/firmware/dcdbas.h
deleted file mode 100644
index ca3cb0a54ab6..000000000000
--- a/drivers/firmware/dcdbas.h
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- * dcdbas.h: Definitions for Dell Systems Management Base driver
- *
- * Copyright (C) 1995-2005 Dell Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License v2.0 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that 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 _DCDBAS_H_
-#define _DCDBAS_H_
-
-#include <linux/device.h>
-#include <linux/sysfs.h>
-#include <linux/types.h>
-
-#define MAX_SMI_DATA_BUF_SIZE (256 * 1024)
-
-#define HC_ACTION_NONE (0)
-#define HC_ACTION_HOST_CONTROL_POWEROFF BIT(1)
-#define HC_ACTION_HOST_CONTROL_POWERCYCLE BIT(2)
-
-#define HC_SMITYPE_NONE (0)
-#define HC_SMITYPE_TYPE1 (1)
-#define HC_SMITYPE_TYPE2 (2)
-#define HC_SMITYPE_TYPE3 (3)
-
-#define ESM_APM_CMD (0x0A0)
-#define ESM_APM_POWER_CYCLE (0x10)
-#define ESM_STATUS_CMD_UNSUCCESSFUL (-1)
-
-#define CMOS_BASE_PORT (0x070)
-#define CMOS_PAGE1_INDEX_PORT (0)
-#define CMOS_PAGE1_DATA_PORT (1)
-#define CMOS_PAGE2_INDEX_PORT_PIIX4 (2)
-#define CMOS_PAGE2_DATA_PORT_PIIX4 (3)
-#define PE1400_APM_CONTROL_PORT (0x0B0)
-#define PCAT_APM_CONTROL_PORT (0x0B2)
-#define PCAT_APM_STATUS_PORT (0x0B3)
-#define PE1300_CMOS_CMD_STRUCT_PTR (0x38)
-#define PE1400_CMOS_CMD_STRUCT_PTR (0x70)
-
-#define MAX_SYSMGMT_SHORTCMD_PARMBUF_LEN (14)
-#define MAX_SYSMGMT_LONGCMD_SGENTRY_NUM (16)
-
-#define TIMEOUT_USEC_SHORT_SEMA_BLOCKING (10000)
-#define EXPIRED_TIMER (0)
-
-#define SMI_CMD_MAGIC (0x534D4931)
-
-#define DCDBAS_DEV_ATTR_RW(_name) \
- DEVICE_ATTR(_name,0600,_name##_show,_name##_store);
-
-#define DCDBAS_DEV_ATTR_RO(_name) \
- DEVICE_ATTR(_name,0400,_name##_show,NULL);
-
-#define DCDBAS_DEV_ATTR_WO(_name) \
- DEVICE_ATTR(_name,0200,NULL,_name##_store);
-
-#define DCDBAS_BIN_ATTR_RW(_name) \
-struct bin_attribute bin_attr_##_name = { \
- .attr = { .name = __stringify(_name), \
- .mode = 0600 }, \
- .read = _name##_read, \
- .write = _name##_write, \
-}
-
-struct smi_cmd {
- __u32 magic;
- __u32 ebx;
- __u32 ecx;
- __u16 command_address;
- __u8 command_code;
- __u8 reserved;
- __u8 command_buffer[1];
-} __attribute__ ((packed));
-
-struct apm_cmd {
- __u8 command;
- __s8 status;
- __u16 reserved;
- union {
- struct {
- __u8 parm[MAX_SYSMGMT_SHORTCMD_PARMBUF_LEN];
- } __attribute__ ((packed)) shortreq;
-
- struct {
- __u16 num_sg_entries;
- struct {
- __u32 size;
- __u64 addr;
- } __attribute__ ((packed))
- sglist[MAX_SYSMGMT_LONGCMD_SGENTRY_NUM];
- } __attribute__ ((packed)) longreq;
- } __attribute__ ((packed)) parameters;
-} __attribute__ ((packed));
-
-int dcdbas_smi_request(struct smi_cmd *smi_cmd);
-
-#endif /* _DCDBAS_H_ */
-
diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c
deleted file mode 100644
index fb8af5cb7c9b..000000000000
--- a/drivers/firmware/dell_rbu.c
+++ /dev/null
@@ -1,745 +0,0 @@
-/*
- * dell_rbu.c
- * Bios Update driver for Dell systems
- * Author: Dell Inc
- * Abhay Salunke <abhay_salunke@dell.com>
- *
- * Copyright (C) 2005 Dell Inc.
- *
- * Remote BIOS Update (rbu) driver is used for updating DELL BIOS by
- * creating entries in the /sys file systems on Linux 2.6 and higher
- * kernels. The driver supports two mechanism to update the BIOS namely
- * contiguous and packetized. Both these methods still require having some
- * application to set the CMOS bit indicating the BIOS to update itself
- * after a reboot.
- *
- * Contiguous method:
- * This driver writes the incoming data in a monolithic image by allocating
- * contiguous physical pages large enough to accommodate the incoming BIOS
- * image size.
- *
- * Packetized method:
- * The driver writes the incoming packet image by allocating a new packet
- * on every time the packet data is written. This driver requires an
- * application to break the BIOS image in to fixed sized packet chunks.
- *
- * See Documentation/dell_rbu.txt for more info.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License v2.0 as published by
- * the Free Software Foundation
- *
- * This program is distributed in the hope that 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/init.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/blkdev.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/moduleparam.h>
-#include <linux/firmware.h>
-#include <linux/dma-mapping.h>
-
-MODULE_AUTHOR("Abhay Salunke <abhay_salunke@dell.com>");
-MODULE_DESCRIPTION("Driver for updating BIOS image on DELL systems");
-MODULE_LICENSE("GPL");
-MODULE_VERSION("3.2");
-
-#define BIOS_SCAN_LIMIT 0xffffffff
-#define MAX_IMAGE_LENGTH 16
-static struct _rbu_data {
- void *image_update_buffer;
- unsigned long image_update_buffer_size;
- unsigned long bios_image_size;
- int image_update_ordernum;
- int dma_alloc;
- spinlock_t lock;
- unsigned long packet_read_count;
- unsigned long num_packets;
- unsigned long packetsize;
- unsigned long imagesize;
- int entry_created;
-} rbu_data;
-
-static char image_type[MAX_IMAGE_LENGTH + 1] = "mono";
-module_param_string(image_type, image_type, sizeof (image_type), 0);
-MODULE_PARM_DESC(image_type,
- "BIOS image type. choose- mono or packet or init");
-
-static unsigned long allocation_floor = 0x100000;
-module_param(allocation_floor, ulong, 0644);
-MODULE_PARM_DESC(allocation_floor,
- "Minimum address for allocations when using Packet mode");
-
-struct packet_data {
- struct list_head list;
- size_t length;
- void *data;
- int ordernum;
-};
-
-static struct packet_data packet_data_head;
-
-static struct platform_device *rbu_device;
-static int context;
-static dma_addr_t dell_rbu_dmaaddr;
-
-static void init_packet_head(void)
-{
- INIT_LIST_HEAD(&packet_data_head.list);
- rbu_data.packet_read_count = 0;
- rbu_data.num_packets = 0;
- rbu_data.packetsize = 0;
- rbu_data.imagesize = 0;
-}
-
-static int create_packet(void *data, size_t length)
-{
- struct packet_data *newpacket;
- int ordernum = 0;
- int retval = 0;
- unsigned int packet_array_size = 0;
- void **invalid_addr_packet_array = NULL;
- void *packet_data_temp_buf = NULL;
- unsigned int idx = 0;
-
- pr_debug("create_packet: entry \n");
-
- if (!rbu_data.packetsize) {
- pr_debug("create_packet: packetsize not specified\n");
- retval = -EINVAL;
- goto out_noalloc;
- }
-
- spin_unlock(&rbu_data.lock);
-
- newpacket = kzalloc(sizeof (struct packet_data), GFP_KERNEL);
-
- if (!newpacket) {
- printk(KERN_WARNING
- "dell_rbu:%s: failed to allocate new "
- "packet\n", __func__);
- retval = -ENOMEM;
- spin_lock(&rbu_data.lock);
- goto out_noalloc;
- }
-
- ordernum = get_order(length);
-
- /*
- * BIOS errata mean we cannot allocate packets below 1MB or they will
- * be overwritten by BIOS.
- *
- * array to temporarily hold packets
- * that are below the allocation floor
- *
- * NOTE: very simplistic because we only need the floor to be at 1MB
- * due to BIOS errata. This shouldn't be used for higher floors
- * or you will run out of mem trying to allocate the array.
- */
- packet_array_size = max(
- (unsigned int)(allocation_floor / rbu_data.packetsize),
- (unsigned int)1);
- invalid_addr_packet_array = kcalloc(packet_array_size, sizeof(void *),
- GFP_KERNEL);
-
- if (!invalid_addr_packet_array) {
- printk(KERN_WARNING
- "dell_rbu:%s: failed to allocate "
- "invalid_addr_packet_array \n",
- __func__);
- retval = -ENOMEM;
- spin_lock(&rbu_data.lock);
- goto out_alloc_packet;
- }
-
- while (!packet_data_temp_buf) {
- packet_data_temp_buf = (unsigned char *)
- __get_free_pages(GFP_KERNEL, ordernum);
- if (!packet_data_temp_buf) {
- printk(KERN_WARNING
- "dell_rbu:%s: failed to allocate new "
- "packet\n", __func__);
- retval = -ENOMEM;
- spin_lock(&rbu_data.lock);
- goto out_alloc_packet_array;
- }
-
- if ((unsigned long)virt_to_phys(packet_data_temp_buf)
- < allocation_floor) {
- pr_debug("packet 0x%lx below floor at 0x%lx.\n",
- (unsigned long)virt_to_phys(
- packet_data_temp_buf),
- allocation_floor);
- invalid_addr_packet_array[idx++] = packet_data_temp_buf;
- packet_data_temp_buf = NULL;
- }
- }
- spin_lock(&rbu_data.lock);
-
- newpacket->data = packet_data_temp_buf;
-
- pr_debug("create_packet: newpacket at physical addr %lx\n",
- (unsigned long)virt_to_phys(newpacket->data));
-
- /* packets may not have fixed size */
- newpacket->length = length;
- newpacket->ordernum = ordernum;
- ++rbu_data.num_packets;
-
- /* initialize the newly created packet headers */
- INIT_LIST_HEAD(&newpacket->list);
- list_add_tail(&newpacket->list, &packet_data_head.list);
-
- memcpy(newpacket->data, data, length);
-
- pr_debug("create_packet: exit \n");
-
-out_alloc_packet_array:
- /* always free packet array */
- for (;idx>0;idx--) {
- pr_debug("freeing unused packet below floor 0x%lx.\n",
- (unsigned long)virt_to_phys(
- invalid_addr_packet_array[idx-1]));
- free_pages((unsigned long)invalid_addr_packet_array[idx-1],
- ordernum);
- }
- kfree(invalid_addr_packet_array);
-
-out_alloc_packet:
- /* if error, free data */
- if (retval)
- kfree(newpacket);
-
-out_noalloc:
- return retval;
-}
-
-static int packetize_data(const u8 *data, size_t length)
-{
- int rc = 0;
- int done = 0;
- int packet_length;
- u8 *temp;
- u8 *end = (u8 *) data + length;
- pr_debug("packetize_data: data length %zd\n", length);
- if (!rbu_data.packetsize) {
- printk(KERN_WARNING
- "dell_rbu: packetsize not specified\n");
- return -EIO;
- }
-
- temp = (u8 *) data;
-
- /* packetize the hunk */
- while (!done) {
- if ((temp + rbu_data.packetsize) < end)
- packet_length = rbu_data.packetsize;
- else {
- /* this is the last packet */
- packet_length = end - temp;
- done = 1;
- }
-
- if ((rc = create_packet(temp, packet_length)))
- return rc;
-
- pr_debug("%p:%td\n", temp, (end - temp));
- temp += packet_length;
- }
-
- rbu_data.imagesize = length;
-
- return rc;
-}
-
-static int do_packet_read(char *data, struct list_head *ptemp_list,
- int length, int bytes_read, int *list_read_count)
-{
- void *ptemp_buf;
- struct packet_data *newpacket = NULL;
- int bytes_copied = 0;
- int j = 0;
-
- newpacket = list_entry(ptemp_list, struct packet_data, list);
- *list_read_count += newpacket->length;
-
- if (*list_read_count > bytes_read) {
- /* point to the start of unread data */
- j = newpacket->length - (*list_read_count - bytes_read);
- /* point to the offset in the packet buffer */
- ptemp_buf = (u8 *) newpacket->data + j;
- /*
- * check if there is enough room in
- * * the incoming buffer
- */
- if (length > (*list_read_count - bytes_read))
- /*
- * copy what ever is there in this
- * packet and move on
- */
- bytes_copied = (*list_read_count - bytes_read);
- else
- /* copy the remaining */
- bytes_copied = length;
- memcpy(data, ptemp_buf, bytes_copied);
- }
- return bytes_copied;
-}
-
-static int packet_read_list(char *data, size_t * pread_length)
-{
- struct list_head *ptemp_list;
- int temp_count = 0;
- int bytes_copied = 0;
- int bytes_read = 0;
- int remaining_bytes = 0;
- char *pdest = data;
-
- /* check if we have any packets */
- if (0 == rbu_data.num_packets)
- return -ENOMEM;
-
- remaining_bytes = *pread_length;
- bytes_read = rbu_data.packet_read_count;
-
- ptemp_list = (&packet_data_head.list)->next;
- while (!list_empty(ptemp_list)) {
- bytes_copied = do_packet_read(pdest, ptemp_list,
- remaining_bytes, bytes_read, &temp_count);
- remaining_bytes -= bytes_copied;
- bytes_read += bytes_copied;
- pdest += bytes_copied;
- /*
- * check if we reached end of buffer before reaching the
- * last packet
- */
- if (remaining_bytes == 0)
- break;
-
- ptemp_list = ptemp_list->next;
- }
- /*finally set the bytes read */
- *pread_length = bytes_read - rbu_data.packet_read_count;
- rbu_data.packet_read_count = bytes_read;
- return 0;
-}
-
-static void packet_empty_list(void)
-{
- struct list_head *ptemp_list;
- struct list_head *pnext_list;
- struct packet_data *newpacket;
-
- ptemp_list = (&packet_data_head.list)->next;
- while (!list_empty(ptemp_list)) {
- newpacket =
- list_entry(ptemp_list, struct packet_data, list);
- pnext_list = ptemp_list->next;
- list_del(ptemp_list);
- ptemp_list = pnext_list;
- /*
- * zero out the RBU packet memory before freeing
- * to make sure there are no stale RBU packets left in memory
- */
- memset(newpacket->data, 0, rbu_data.packetsize);
- free_pages((unsigned long) newpacket->data,
- newpacket->ordernum);
- kfree(newpacket);
- }
- rbu_data.packet_read_count = 0;
- rbu_data.num_packets = 0;
- rbu_data.imagesize = 0;
-}
-
-/*
- * img_update_free: Frees the buffer allocated for storing BIOS image
- * Always called with lock held and returned with lock held
- */
-static void img_update_free(void)
-{
- if (!rbu_data.image_update_buffer)
- return;
- /*
- * zero out this buffer before freeing it to get rid of any stale
- * BIOS image copied in memory.
- */
- memset(rbu_data.image_update_buffer, 0,
- rbu_data.image_update_buffer_size);
- if (rbu_data.dma_alloc == 1)
- dma_free_coherent(NULL, rbu_data.bios_image_size,
- rbu_data.image_update_buffer, dell_rbu_dmaaddr);
- else
- free_pages((unsigned long) rbu_data.image_update_buffer,
- rbu_data.image_update_ordernum);
-
- /*
- * Re-initialize the rbu_data variables after a free
- */
- rbu_data.image_update_ordernum = -1;
- rbu_data.image_update_buffer = NULL;
- rbu_data.image_update_buffer_size = 0;
- rbu_data.bios_image_size = 0;
- rbu_data.dma_alloc = 0;
-}
-
-/*
- * img_update_realloc: This function allocates the contiguous pages to
- * accommodate the requested size of data. The memory address and size
- * values are stored globally and on every call to this function the new
- * size is checked to see if more data is required than the existing size.
- * If true the previous memory is freed and new allocation is done to
- * accommodate the new size. If the incoming size is less then than the
- * already allocated size, then that memory is reused. This function is
- * called with lock held and returns with lock held.
- */
-static int img_update_realloc(unsigned long size)
-{
- unsigned char *image_update_buffer = NULL;
- unsigned long rc;
- unsigned long img_buf_phys_addr;
- int ordernum;
- int dma_alloc = 0;
-
- /*
- * check if the buffer of sufficient size has been
- * already allocated
- */
- if (rbu_data.image_update_buffer_size >= size) {
- /*
- * check for corruption
- */
- if ((size != 0) && (rbu_data.image_update_buffer == NULL)) {
- printk(KERN_ERR "dell_rbu:%s: corruption "
- "check failed\n", __func__);
- return -EINVAL;
- }
- /*
- * we have a valid pre-allocated buffer with
- * sufficient size
- */
- return 0;
- }
-
- /*
- * free any previously allocated buffer
- */
- img_update_free();
-
- spin_unlock(&rbu_data.lock);
-
- ordernum = get_order(size);
- image_update_buffer =
- (unsigned char *) __get_free_pages(GFP_KERNEL, ordernum);
-
- img_buf_phys_addr =
- (unsigned long) virt_to_phys(image_update_buffer);
-
- if (img_buf_phys_addr > BIOS_SCAN_LIMIT) {
- free_pages((unsigned long) image_update_buffer, ordernum);
- ordernum = -1;
- image_update_buffer = dma_alloc_coherent(NULL, size,
- &dell_rbu_dmaaddr, GFP_KERNEL);
- dma_alloc = 1;
- }
-
- spin_lock(&rbu_data.lock);
-
- if (image_update_buffer != NULL) {
- rbu_data.image_update_buffer = image_update_buffer;
- rbu_data.image_update_buffer_size = size;
- rbu_data.bios_image_size =
- rbu_data.image_update_buffer_size;
- rbu_data.image_update_ordernum = ordernum;
- rbu_data.dma_alloc = dma_alloc;
- rc = 0;
- } else {
- pr_debug("Not enough memory for image update:"
- "size = %ld\n", size);
- rc = -ENOMEM;
- }
-
- return rc;
-}
-
-static ssize_t read_packet_data(char *buffer, loff_t pos, size_t count)
-{
- int retval;
- size_t bytes_left;
- size_t data_length;
- char *ptempBuf = buffer;
-
- /* check to see if we have something to return */
- if (rbu_data.num_packets == 0) {
- pr_debug("read_packet_data: no packets written\n");
- retval = -ENOMEM;
- goto read_rbu_data_exit;
- }
-
- if (pos > rbu_data.imagesize) {
- retval = 0;
- printk(KERN_WARNING "dell_rbu:read_packet_data: "
- "data underrun\n");
- goto read_rbu_data_exit;
- }
-
- bytes_left = rbu_data.imagesize - pos;
- data_length = min(bytes_left, count);
-
- if ((retval = packet_read_list(ptempBuf, &data_length)) < 0)
- goto read_rbu_data_exit;
-
- if ((pos + count) > rbu_data.imagesize) {
- rbu_data.packet_read_count = 0;
- /* this was the last copy */
- retval = bytes_left;
- } else
- retval = count;
-
- read_rbu_data_exit:
- return retval;
-}
-
-static ssize_t read_rbu_mono_data(char *buffer, loff_t pos, size_t count)
-{
- /* check to see if we have something to return */
- if ((rbu_data.image_update_buffer == NULL) ||
- (rbu_data.bios_image_size == 0)) {
- pr_debug("read_rbu_data_mono: image_update_buffer %p ,"
- "bios_image_size %lu\n",
- rbu_data.image_update_buffer,
- rbu_data.bios_image_size);
- return -ENOMEM;
- }
-
- return memory_read_from_buffer(buffer, count, &pos,
- rbu_data.image_update_buffer, rbu_data.bios_image_size);
-}
-
-static ssize_t read_rbu_data(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buffer, loff_t pos, size_t count)
-{
- ssize_t ret_count = 0;
-
- spin_lock(&rbu_data.lock);
-
- if (!strcmp(image_type, "mono"))
- ret_count = read_rbu_mono_data(buffer, pos, count);
- else if (!strcmp(image_type, "packet"))
- ret_count = read_packet_data(buffer, pos, count);
- else
- pr_debug("read_rbu_data: invalid image type specified\n");
-
- spin_unlock(&rbu_data.lock);
- return ret_count;
-}
-
-static void callbackfn_rbu(const struct firmware *fw, void *context)
-{
- rbu_data.entry_created = 0;
-
- if (!fw)
- return;
-
- if (!fw->size)
- goto out;
-
- spin_lock(&rbu_data.lock);
- if (!strcmp(image_type, "mono")) {
- if (!img_update_realloc(fw->size))
- memcpy(rbu_data.image_update_buffer,
- fw->data, fw->size);
- } else if (!strcmp(image_type, "packet")) {
- /*
- * we need to free previous packets if a
- * new hunk of packets needs to be downloaded
- */
- packet_empty_list();
- if (packetize_data(fw->data, fw->size))
- /* Incase something goes wrong when we are
- * in middle of packetizing the data, we
- * need to free up whatever packets might
- * have been created before we quit.
- */
- packet_empty_list();
- } else
- pr_debug("invalid image type specified.\n");
- spin_unlock(&rbu_data.lock);
- out:
- release_firmware(fw);
-}
-
-static ssize_t read_rbu_image_type(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buffer, loff_t pos, size_t count)
-{
- int size = 0;
- if (!pos)
- size = scnprintf(buffer, count, "%s\n", image_type);
- return size;
-}
-
-static ssize_t write_rbu_image_type(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buffer, loff_t pos, size_t count)
-{
- int rc = count;
- int req_firm_rc = 0;
- int i;
- spin_lock(&rbu_data.lock);
- /*
- * Find the first newline or space
- */
- for (i = 0; i < count; ++i)
- if (buffer[i] == '\n' || buffer[i] == ' ') {
- buffer[i] = '\0';
- break;
- }
- if (i == count)
- buffer[count] = '\0';
-
- if (strstr(buffer, "mono"))
- strcpy(image_type, "mono");
- else if (strstr(buffer, "packet"))
- strcpy(image_type, "packet");
- else if (strstr(buffer, "init")) {
- /*
- * If due to the user error the driver gets in a bad
- * state where even though it is loaded , the
- * /sys/class/firmware/dell_rbu entries are missing.
- * to cover this situation the user can recreate entries
- * by writing init to image_type.
- */
- if (!rbu_data.entry_created) {
- spin_unlock(&rbu_data.lock);
- req_firm_rc = request_firmware_nowait(THIS_MODULE,
- FW_ACTION_NOHOTPLUG, "dell_rbu",
- &rbu_device->dev, GFP_KERNEL, &context,
- callbackfn_rbu);
- if (req_firm_rc) {
- printk(KERN_ERR
- "dell_rbu:%s request_firmware_nowait"
- " failed %d\n", __func__, rc);
- rc = -EIO;
- } else
- rbu_data.entry_created = 1;
-
- spin_lock(&rbu_data.lock);
- }
- } else {
- printk(KERN_WARNING "dell_rbu: image_type is invalid\n");
- spin_unlock(&rbu_data.lock);
- return -EINVAL;
- }
-
- /* we must free all previous allocations */
- packet_empty_list();
- img_update_free();
- spin_unlock(&rbu_data.lock);
-
- return rc;
-}
-
-static ssize_t read_rbu_packet_size(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buffer, loff_t pos, size_t count)
-{
- int size = 0;
- if (!pos) {
- spin_lock(&rbu_data.lock);
- size = scnprintf(buffer, count, "%lu\n", rbu_data.packetsize);
- spin_unlock(&rbu_data.lock);
- }
- return size;
-}
-
-static ssize_t write_rbu_packet_size(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buffer, loff_t pos, size_t count)
-{
- unsigned long temp;
- spin_lock(&rbu_data.lock);
- packet_empty_list();
- sscanf(buffer, "%lu", &temp);
- if (temp < 0xffffffff)
- rbu_data.packetsize = temp;
-
- spin_unlock(&rbu_data.lock);
- return count;
-}
-
-static struct bin_attribute rbu_data_attr = {
- .attr = {.name = "data", .mode = 0444},
- .read = read_rbu_data,
-};
-
-static struct bin_attribute rbu_image_type_attr = {
- .attr = {.name = "image_type", .mode = 0644},
- .read = read_rbu_image_type,
- .write = write_rbu_image_type,
-};
-
-static struct bin_attribute rbu_packet_size_attr = {
- .attr = {.name = "packet_size", .mode = 0644},
- .read = read_rbu_packet_size,
- .write = write_rbu_packet_size,
-};
-
-static int __init dcdrbu_init(void)
-{
- int rc;
- spin_lock_init(&rbu_data.lock);
-
- init_packet_head();
- rbu_device = platform_device_register_simple("dell_rbu", -1, NULL, 0);
- if (IS_ERR(rbu_device)) {
- printk(KERN_ERR
- "dell_rbu:%s:platform_device_register_simple "
- "failed\n", __func__);
- return PTR_ERR(rbu_device);
- }
-
- rc = sysfs_create_bin_file(&rbu_device->dev.kobj, &rbu_data_attr);
- if (rc)
- goto out_devreg;
- rc = sysfs_create_bin_file(&rbu_device->dev.kobj, &rbu_image_type_attr);
- if (rc)
- goto out_data;
- rc = sysfs_create_bin_file(&rbu_device->dev.kobj,
- &rbu_packet_size_attr);
- if (rc)
- goto out_imtype;
-
- rbu_data.entry_created = 0;
- return 0;
-
-out_imtype:
- sysfs_remove_bin_file(&rbu_device->dev.kobj, &rbu_image_type_attr);
-out_data:
- sysfs_remove_bin_file(&rbu_device->dev.kobj, &rbu_data_attr);
-out_devreg:
- platform_device_unregister(rbu_device);
- return rc;
-}
-
-static __exit void dcdrbu_exit(void)
-{
- spin_lock(&rbu_data.lock);
- packet_empty_list();
- img_update_free();
- spin_unlock(&rbu_data.lock);
- platform_device_unregister(rbu_device);
-}
-
-module_exit(dcdrbu_exit);
-module_init(dcdrbu_init);
-
-/* vim:noet:ts=8:sw=8
-*/