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Date: Mon, 18 Jul 2011 09:08:14 -0400 From: Prarit Bhargava <prarit@...hat.com> To: linux-kernel@...r.kernel.org Cc: Prarit Bhargava <prarit@...hat.com> Subject: [PATCH 00/34] System Firmware and SMBIOS Support [v3] [Sorry if anyone receives this twice. It didn't make it to LKML the first time.] This change is targeted for 3.2 in order to give is "soak" time in linux-next. DMI, or the Desktop Management Interface, provides access to OEM and hardware specific details about the x86 or ia64 system the kernel is currently runnig on. DMI has been deprecated since 2003, which was the last update of the DMI Specification. The System Management BIOS, or SMBIOS, supercedes DMI -- the SMBIOS tables include the possibility of a _DMI_ entry and tables. However, in the Linux kernel we do not access any of the DMI data and only access SMBIOS data. Currently, the kernel uses dmi_* functions (as defined in drivers/firmware/dmi_scan.c) to access the data. The functions allow kernel subsystems and modules to set specific options based on the platform and BIOS version. The dmi_* functions in the kernel fail in several ways. First, as mentioned the dmi_* functions are really accessing SMBIOS data. The existing code queries for the _SMB_ entry and determines data access after that. The existing dmi_* functions create an array of x86 and ia64 specific entries which are defined as part of x86 and ia64 specific udev entries, and allows drivers and subsystems to make platform specific decisions. In addition to the arch specific code, the dmi_* code creates a list of "devices" to which makes updating very difficult and does not easily scale. Another key issue with the existing code is that several drivers do their own search through the SMBIOS, for example, see drivers/pci/hotplug/cpqphp*.c. Three months (or so) ago I proposed a patch which was based on a simple request from a colleague -- create a sysfs file that would export the SMBIOS version. This simple request was not something that was easy to do given the layout of the existing DMI code. The request resulted in having to create a new smbios class within the kernel, and essentially doing a separate search through memory. This new patchset reworks the existing DMI code into two separate layers. It is based off of the feedback I received previously when discussing the SMBIOS version patch on LKML. The first layer is the System Firmware Interface, which is based upon Alan Cox's suggestion of a common platform driver (unfortunately, platform driver is already defined and used within the kernel). This is meant to be an arch independent subsystem in the kernel for all arches. It is a common interface which provides access to specific system values in the kernel such as the Chassis Manufacturer, the BIOS developer, or the BIOS date. The System Firmware Interface, or sysfw allows for easy updating by simply adding fields to an array in include/linux/mod_devicetable.h. Standard simple searching functions, sysfw_lookup() and sysfw_callback() are provided to the kernel and modules. sysfw_callback() is similar to dmi_check_system() but the new function allows for exact matching which some drivers required. The second layer introduced in this patchset is the SMBIOS sysfw driver. This driver (obviously) registers with the interface and also provides it's own interface. The reason for the separate interface is that specific drivers have their own need to search the SMBIOS for OEM or platform specific information (see, for example, drivers/watchdog/hpwdt.c, or drivers/pci/pci-label.c). This new driver provides a function, smbios_walk() which allows individual drivers or subsystems to traverse the SMBIOS table looking for OEM or platform specific data. The new SMBIOS driver can be easily updated by adding SMBIOS structure information to the smbios_struct union in include/linux/smbios.h. These changes are now targeted for 3.2 and if there are no objections (there have been none for v1 and v2) I will request a pull for linux-next during the 3.1 merge window. A git tree with these changes has been set up here: git://git.kernel.org/pub/scm/linux/kernel/git/prarit/smbios.git with the latest changes in the smbios-3.0-rc7-v3 branch. Prarit Bhargava (34): System Firmware Interface New SMBIOS driver for x86 and ia64. arch specific changes for SMBIOS and System Firmware drivers/acpi changes for SMBIOS and System Firmware interface drivers/ata changes for SMBIOS and System Firmware drivers/floppy changes for SMBIOS and System Firmware drivers/char changes for SMBIOS and System Firmware drivers/crypto changes for SMBIOS and System Firmware drivers/gpio changes for SMBIOS and System Firmware drivers/gpu changes for SMBIOS and System Firmware drivers/hwmon changes for SMBIOS and System Firmware drivers/i2c changes for SMBIOS and System Firmware drivers/ide changes for SMBIOS and System Firmware drivers/input changes for SMBIOS and System Firmware drivers/leds changes for SMBIOS and System Firmware drivers/media changes for SMBIOS and System Firmware drivers/misc changes for SMBIOS and System Firmware drivers/mtd changes for SMBIOS and System Firmware drivers/net changes for SMBIOS and System Firmware drivers/pci changes for SMBIOS and System Firmware drivers/platform changes for SMBIOS and System Firmware drivers/pnp changes for SMBIOS and System Firmware drivers/power changes for SMBIOS and System Firmware drivers/rtc changes for SMBIOS and System Firmware drivers/staging changes for SMBIOS and System Firmware drivers/tty changes for SMBIOS and System Firmware drivers/usb changes for SMBIOS and System Firmware drivers/video changes for SMBIOS and System Firmware drivers/w1 changes for SMBIOS and System Firmware drivers/watchdog changes for SMBIOS and System Firmware include/linux/acpi.h changes for SMBIOS and System Firmware Kernel panic changes for SMBIOS and System Firmware sound/pci/hda changes for SMBIOS and System Firmware Remove old DMI & SMBIOS code and make SMBIOS default on Documentation/ABI/obsolete/sysfs-dmi | 40 ++ Documentation/ABI/testing/sysfw-smbios | 36 ++ arch/ia64/Kconfig | 5 + arch/ia64/include/asm/dmi.h | 12 - arch/ia64/include/asm/smbios.h | 12 + arch/ia64/kernel/setup.c | 8 +- arch/x86/Kconfig | 9 +- arch/x86/include/asm/dmi.h | 19 - arch/x86/include/asm/mmconfig.h | 4 +- arch/x86/include/asm/pci_x86.h | 6 +- arch/x86/include/asm/smbios.h | 19 + arch/x86/kernel/acpi/boot.c | 177 +++--- arch/x86/kernel/acpi/sleep.c | 1 - arch/x86/kernel/apic/apic.c | 20 +- arch/x86/kernel/apic/bigsmp_32.c | 37 +- arch/x86/kernel/apm_32.c | 391 ++++++++----- arch/x86/kernel/cpu/amd.c | 2 +- arch/x86/kernel/cpu/vmware.c | 17 +- arch/x86/kernel/io_delay.c | 42 +- arch/x86/kernel/mmconf-fam10h_64.c | 28 +- arch/x86/kernel/probe_roms.c | 1 - arch/x86/kernel/process.c | 8 +- arch/x86/kernel/reboot.c | 132 +++-- arch/x86/kernel/setup.c | 14 +- arch/x86/kernel/tsc.c | 16 +- arch/x86/pci/acpi.c | 18 +- arch/x86/pci/broadcom_bus.c | 1 - arch/x86/pci/common.c | 163 +++--- arch/x86/pci/direct.c | 7 +- arch/x86/pci/fixup.c | 33 +- arch/x86/pci/init.c | 4 +- arch/x86/pci/irq.c | 26 +- arch/x86/pci/mmconfig-shared.c | 10 +- arch/x86/pci/mrst.c | 1 - drivers/acpi/battery.c | 5 +- drivers/acpi/blacklist.c | 125 ++-- drivers/acpi/bus.c | 16 +- drivers/acpi/ec.c | 101 +++- drivers/acpi/osl.c | 17 +- drivers/acpi/pci_irq.c | 33 +- drivers/acpi/pci_slot.c | 12 +- drivers/acpi/processor_core.c | 25 +- drivers/acpi/processor_driver.c | 1 - drivers/acpi/processor_idle.c | 51 ++- drivers/acpi/scan.c | 4 +- drivers/acpi/sleep.c | 46 +- drivers/acpi/thermal.c | 42 +- drivers/acpi/video.c | 28 +- drivers/acpi/video_detect.c | 3 +- drivers/ata/acard-ahci.c | 1 - drivers/ata/ahci.c | 177 +++--- drivers/ata/ata_piix.c | 154 +++--- drivers/ata/pata_ali.c | 18 +- drivers/ata/pata_cs5530.c | 12 +- drivers/ata/pata_rdc.c | 1 - drivers/ata/pata_sch.c | 1 - drivers/ata/pata_via.c | 14 +- drivers/ata/sata_sil.c | 19 +- drivers/block/floppy.c | 1 - drivers/char/i8k.c | 75 ++-- drivers/char/ipmi/ipmi_si_intf.c | 159 +++--- drivers/char/sonypi.c | 16 +- drivers/cpufreq/acpi-cpufreq.c | 16 +- drivers/cpufreq/powernow-k7.c | 14 +- drivers/crypto/amcc/crypto4xx_sa.c | 1 - drivers/crypto/hifn_795x.c | 1 - drivers/firmware/Kconfig | 65 ++- drivers/firmware/Makefile | 8 +- drivers/firmware/dmi-id.c | 245 -------- drivers/firmware/dmi-sysfs.c | 696 ---------------------- drivers/firmware/dmi_scan.c | 751 ------------------------ drivers/firmware/smbios-sysfs.c | 705 ++++++++++++++++++++++ drivers/firmware/smbios.c | 687 ++++++++++++++++++++++ drivers/firmware/sysfw-sysfs.c | 306 ++++++++++ drivers/firmware/sysfw.c | 168 ++++++ drivers/gpio/basic_mmio_gpio.c | 1 - drivers/gpu/drm/i915/intel_lvds.c | 81 ++-- drivers/gpu/vga/vga_switcheroo.c | 1 - drivers/hwmon/abituguru.c | 18 +- drivers/hwmon/abituguru3.c | 75 ++-- drivers/hwmon/acpi_power_meter.c | 15 +- drivers/hwmon/adcxx.c | 1 - drivers/hwmon/applesmc.c | 73 ++- drivers/hwmon/asus_atk0110.c | 10 +- drivers/hwmon/fschmd.c | 104 ++-- drivers/hwmon/it87.c | 42 +- drivers/hwmon/lm70.c | 1 - drivers/i2c/busses/i2c-i801.c | 76 +-- drivers/i2c/busses/i2c-nforce2.c | 12 +- drivers/i2c/busses/i2c-piix4.c | 24 +- drivers/ide/alim15x3.c | 18 +- drivers/ide/ide-acpi.c | 16 +- drivers/ide/ide-gd.c | 10 +- drivers/ide/via82cxxx.c | 14 +- drivers/input/keyboard/atkbd.c | 80 ++-- drivers/input/misc/wistron_btns.c | 239 ++++---- drivers/input/mouse/lifebook.c | 42 +- drivers/input/mouse/synaptics.c | 44 +- drivers/input/serio/i8042-x86ia64io.h | 367 ++++++------ drivers/input/tablet/wacom.h | 1 - drivers/input/touchscreen/htcpen.c | 13 +- drivers/leds/leds-clevo-mail.c | 78 ++-- drivers/leds/leds-ss4200.c | 23 +- drivers/media/dvb/firewire/firedtv-fw.c | 1 - drivers/media/dvb/firewire/firedtv.h | 1 - drivers/media/video/cafe_ccic.c | 14 +- drivers/media/video/gspca/m5602/m5602_ov9650.c | 46 +- drivers/media/video/gspca/m5602/m5602_ov9650.h | 2 +- drivers/media/video/gspca/m5602/m5602_s5k4aa.c | 102 ++-- drivers/media/video/gspca/m5602/m5602_s5k4aa.h | 2 +- drivers/media/video/gspca/sn9c20x.c | 30 +- drivers/media/video/pvrusb2/pvrusb2-devattr.h | 1 - drivers/misc/eeprom/at24.c | 1 - drivers/misc/lis3lv02d/lis3lv02d.c | 1 - drivers/misc/pch_phub.c | 14 +- drivers/mtd/devices/m25p80.c | 1 - drivers/net/skge.c | 11 +- drivers/net/via-rhine.c | 18 +- drivers/net/wireless/wl1251/sdio.c | 1 - drivers/pci/dmar.c | 14 +- drivers/pci/hotplug/cpqphp.h | 81 +--- drivers/pci/hotplug/cpqphp_core.c | 207 +------ drivers/pci/intel-iommu.c | 20 +- drivers/pci/pci-label.c | 82 ++-- drivers/pci/pci.h | 2 +- drivers/pci/pcie/portdrv_pci.c | 26 +- drivers/pci/quirks.c | 29 +- drivers/platform/x86/acer-wmi.c | 119 ++-- drivers/platform/x86/acerhdf.c | 18 +- drivers/platform/x86/asus-laptop.c | 29 +- drivers/platform/x86/compal-laptop.c | 106 ++-- drivers/platform/x86/dell-laptop.c | 66 ++- drivers/platform/x86/dell-wmi.c | 15 +- drivers/platform/x86/eeepc-laptop.c | 58 ++- drivers/platform/x86/eeepc-wmi.c | 30 +- drivers/platform/x86/fujitsu-laptop.c | 41 +- drivers/platform/x86/hdaps.c | 76 ++-- drivers/platform/x86/hp_accel.c | 98 ++-- drivers/platform/x86/ibm_rtl.c | 21 +- drivers/platform/x86/intel_oaktrail.c | 15 +- drivers/platform/x86/msi-laptop.c | 115 ++-- drivers/platform/x86/samsung-laptop.c | 183 +++--- drivers/platform/x86/sony-laptop.c | 16 +- drivers/platform/x86/thinkpad_acpi.c | 64 +-- drivers/pnp/pnpacpi/core.c | 1 - drivers/pnp/pnpbios/core.c | 20 +- drivers/power/max17042_battery.c | 1 - drivers/rtc/rtc-cmos.c | 1 - drivers/rtc/rtc-mrst.c | 1 - drivers/staging/hv/hv_mouse.c | 1 - drivers/staging/hv/hv_timesource.c | 18 +- drivers/staging/hv/hv_util.c | 17 +- drivers/staging/hv/netvsc_drv.c | 17 +- drivers/staging/hv/vmbus_drv.c | 1 - drivers/tty/serial/pch_uart.c | 16 +- drivers/usb/host/pci-quirks.c | 19 +- drivers/usb/host/uhci-hcd.c | 2 +- drivers/usb/host/uhci-pci.c | 15 +- drivers/video/aty/atyfb_base.c | 18 +- drivers/video/backlight/kb3886_bl.c | 13 +- drivers/video/efifb.c | 124 ++-- drivers/w1/masters/ds2490.c | 1 - drivers/watchdog/hpwdt.c | 16 +- drivers/watchdog/ibmasr.c | 9 +- drivers/watchdog/sbc_fitpc2_wdt.c | 22 +- include/linux/acpi.h | 2 +- include/linux/dmi.h | 139 ----- include/linux/mod_devicetable.h | 73 ++- include/linux/smbios.h | 243 ++++++++ include/linux/sysfw.h | 113 ++++ init/main.c | 3 + kernel/panic.c | 4 +- scripts/mod/file2alias.c | 52 +- sound/pci/hda/patch_sigmatel.c | 29 +- 174 files changed, 5506 insertions(+), 4880 deletions(-) create mode 100644 Documentation/ABI/obsolete/sysfs-dmi create mode 100644 Documentation/ABI/testing/sysfw-smbios delete mode 100644 arch/ia64/include/asm/dmi.h create mode 100644 arch/ia64/include/asm/smbios.h delete mode 100644 arch/x86/include/asm/dmi.h create mode 100644 arch/x86/include/asm/smbios.h delete mode 100644 drivers/firmware/dmi-id.c delete mode 100644 drivers/firmware/dmi-sysfs.c delete mode 100644 drivers/firmware/dmi_scan.c create mode 100644 drivers/firmware/smbios-sysfs.c create mode 100644 drivers/firmware/smbios.c create mode 100644 drivers/firmware/sysfw-sysfs.c create mode 100644 drivers/firmware/sysfw.c delete mode 100644 include/linux/dmi.h create mode 100644 include/linux/smbios.h create mode 100644 include/linux/sysfw.h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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