firmware: dcdbas: Move dcdbas to drivers/platform/x86

Move dcdbas to the more appropriate directory drivers/platform/x86.

Signed-off-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

4 files changed, 0 insertions, 895 deletions

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 02f39d20efce..6d0c28fd3bad 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -145,22 +145,6 @@ config EFI_PCDP
 	  See DIG64_HCDPv20_042804.pdf available from
 	  <http://www.dig64.org/specifications/> 
 
-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 61887ba9df1d..edda4206d8fc 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -11,7 +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-$(CONFIG_DCDBAS)		+= dcdbas.o
 obj-$(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 ae28e48ff7dc..000000000000
--- a/drivers/firmware/dcdbas.c
+++ /dev/null
@@ -1,761 +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/acpi.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		"5.6.0-3.3"
-#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 unsigned long max_smi_data_buf_size = MAX_SMI_DATA_BUF_SIZE;
-static u32 smi_data_buf_phys_addr;
-static DEFINE_MUTEX(smi_data_lock);
-static u8 *eps_buffer;
-
-static unsigned int host_control_action;
-static unsigned int host_control_smi_type;
-static unsigned int host_control_on_shutdown;
-
-static bool wsmt_enabled;
-
-/**
- * smi_data_buf_free: free SMI data buffer
- */
-static void smi_data_buf_free(void)
-{
-	if (!smi_data_buf || wsmt_enabled)
-		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
-		 *
-		 * Provide physical address of command buffer field within
-		 * the struct smi_cmd to BIOS.
-		 *
-		 * Because the address that smi_cmd (smi_data_buf) points to
-		 * will be from memremap() of a non-memory address if WSMT
-		 * is present, we can't use virt_to_phys() on smi_cmd, so
-		 * we have to use the physical address that was saved when
-		 * the virtual address for smi_cmd was received.
-		 */
-		smi_cmd->ebx = smi_data_buf_phys_addr +
-				offsetof(struct 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();
-	}
-}
-
-/* WSMT */
-
-static u8 checksum(u8 *buffer, u8 length)
-{
-	u8 sum = 0;
-	u8 *end = buffer + length;
-
-	while (buffer < end)
-		sum += *buffer++;
-	return sum;
-}
-
-static inline struct smm_eps_table *check_eps_table(u8 *addr)
-{
-	struct smm_eps_table *eps = (struct smm_eps_table *)addr;
-
-	if (strncmp(eps->smm_comm_buff_anchor, SMM_EPS_SIG, 4) != 0)
-		return NULL;
-
-	if (checksum(addr, eps->length) != 0)
-		return NULL;
-
-	return eps;
-}
-
-static int dcdbas_check_wsmt(void)
-{
-	struct acpi_table_wsmt *wsmt = NULL;
-	struct smm_eps_table *eps = NULL;
-	u64 remap_size;
-	u8 *addr;
-
-	acpi_get_table(ACPI_SIG_WSMT, 0, (struct acpi_table_header **)&wsmt);
-	if (!wsmt)
-		return 0;
-
-	/* Check if WSMT ACPI table shows that protection is enabled */
-	if (!(wsmt->protection_flags & ACPI_WSMT_FIXED_COMM_BUFFERS) ||
-	    !(wsmt->protection_flags & ACPI_WSMT_COMM_BUFFER_NESTED_PTR_PROTECTION))
-		return 0;
-
-	/* Scan for EPS (entry point structure) */
-	for (addr = (u8 *)__va(0xf0000);
-	     addr < (u8 *)__va(0x100000 - sizeof(struct smm_eps_table));
-	     addr += 16) {
-		eps = check_eps_table(addr);
-		if (eps)
-			break;
-	}
-
-	if (!eps) {
-		dev_dbg(&dcdbas_pdev->dev, "found WSMT, but no EPS found\n");
-		return -ENODEV;
-	}
-
-	/*
-	 * Get physical address of buffer and map to virtual address.
-	 * Table gives size in 4K pages, regardless of actual system page size.
-	 */
-	if (upper_32_bits(eps->smm_comm_buff_addr + 8)) {
-		dev_warn(&dcdbas_pdev->dev, "found WSMT, but EPS buffer address is above 4GB\n");
-		return -EINVAL;
-	}
-	/*
-	 * Limit remap size to MAX_SMI_DATA_BUF_SIZE + 8 (since the first 8
-	 * bytes are used for a semaphore, not the data buffer itself).
-	 */
-	remap_size = eps->num_of_4k_pages * PAGE_SIZE;
-	if (remap_size > MAX_SMI_DATA_BUF_SIZE + 8)
-		remap_size = MAX_SMI_DATA_BUF_SIZE + 8;
-	eps_buffer = memremap(eps->smm_comm_buff_addr, remap_size, MEMREMAP_WB);
-	if (!eps_buffer) {
-		dev_warn(&dcdbas_pdev->dev, "found WSMT, but failed to map EPS buffer\n");
-		return -ENOMEM;
-	}
-
-	/* First 8 bytes is for a semaphore, not part of the smi_data_buf */
-	smi_data_buf_phys_addr = eps->smm_comm_buff_addr + 8;
-	smi_data_buf = eps_buffer + 8;
-	smi_data_buf_size = remap_size - 8;
-	max_smi_data_buf_size = smi_data_buf_size;
-	wsmt_enabled = true;
-	dev_info(&dcdbas_pdev->dev,
-		 "WSMT found, using firmware-provided SMI buffer.\n");
-	return 1;
-}
-
-/**
- * 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;
-
-	/* Check if ACPI WSMT table specifies protected SMI buffer address */
-	error = dcdbas_check_wsmt();
-	if (error < 0)
-		return error;
-
-	/*
-	 * 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();
-	if (eps_buffer)
-		memunmap(eps_buffer);
-	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 52729a494b00..000000000000
--- a/drivers/firmware/dcdbas.h
+++ /dev/null
@@ -1,117 +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 SMM_EPS_SIG				"$SCB"
-
-#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);
-
-struct smm_eps_table {
-	char smm_comm_buff_anchor[4];
-	u8 length;
-	u8 checksum;
-	u8 version;
-	u64 smm_comm_buff_addr;
-	u64 num_of_4k_pages;
-} __packed;
-
-#endif /* _DCDBAS_H_ */
-