From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56526) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcacF-0003C2-N6 for qemu-devel@nongnu.org; Thu, 17 Sep 2015 10:56:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZcacB-0002VU-Mx for qemu-devel@nongnu.org; Thu, 17 Sep 2015 10:56:51 -0400 Received: from relay-05.andrew.cmu.edu ([128.2.157.12]:42691 helo=relay.andrew.cmu.edu) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZcacB-0002Um-Ic for qemu-devel@nongnu.org; Thu, 17 Sep 2015 10:56:47 -0400 From: "Gabriel L. Somlo" Date: Thu, 17 Sep 2015 10:56:29 -0400 Message-Id: <1442501794-27112-1-git-send-email-somlo@cmu.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH v3 0/5] add ACPI node for fw_cfg on pc and arm List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, drjones@redhat.com, matt.fleming@intel.com, ehabkost@redhat.com, mst@redhat.com, zhaoshenglong@huawei.com, leif.lindholm@linaro.org, ard.biesheuvel@linaro.org, kevin@koconnor.net, kraxel@redhat.com, pbonzini@redhat.com, imammedo@redhat.com, markmb@redhat.com, lersek@redhat.com, rth@twiddle.net New since v2: - pc/i386 node in ssdt only on machine types *newer* than 2.4 (as suggested by Eduardo) I appreciate any further comments and reviews. Hopefully we can make this palatable for upstream, modulo the lingering concerns about whether "QEMU0002" is ok to use as the value of _HID, which I'll hopefully get sorted out with the kernel crew... Thanks much, --Gabriel >New since v1: > > - expose control register size (suggested by Marc Mar=C3=AD) > > - leaving out _UID and _STA fields (thanks Shannon & Igor) > > - using "QEMU0002" as the value of _HID (thanks Michael) > > - added documentation blurb to docs/specs/fw_cfg.txt > (mainly to record usage of the "QEMU0002" string with fw_cfg). > >> This series adds a fw_cfg device node to the SSDT (on pc), or to the >> DSDT (on arm). >> >> - Patch 1/3 moves (and renames) the BIOS_CFG_IOPORT (0x510) >> define from pc.c to pc.h, so that it could be used from >> acpi-build.c in patch 2/3. >>=20 >> - Patch 2/3 adds a fw_cfg node to the pc SSDT. >>=20 >> - Patch 3/3 adds a fw_cfg node to the arm DSDT. >> >> I made up some names - "FWCF" for the node name, and "FWCF0001" >> for _HID; no idea whether that's appropriate, or how else I should >> figure out what to use instead... >> >> Also, using scope "\\_SB", based on where fw_cfg shows up in the >> output of "info qtree". Again, if that's wrong, please point me in >> the right direction. >> >> Re. 3/3 (also mentioned after the commit blurb in the patch itself), >> I noticed none of the other DSDT entries contain a _STA field, wonderi= ng >> why it would (not) make sense to include that, same as on the PC. Gabriel L. Somlo (5): fw_cfg: expose control register size in fw_cfg.h pc: fw_cfg: move ioport base constant to pc.h acpi: pc: add fw_cfg device node to ssdt acpi: arm: add fw_cfg device node to dsdt fw_cfg: document ACPI device node information docs/specs/fw_cfg.txt | 9 +++++++++ hw/arm/virt-acpi-build.c | 13 +++++++++++++ hw/i386/acpi-build.c | 21 +++++++++++++++++++++ hw/i386/pc.c | 5 ++--- hw/i386/pc_piix.c | 1 + hw/i386/pc_q35.c | 1 + hw/nvram/fw_cfg.c | 8 +++++--- include/hw/i386/pc.h | 3 +++ include/hw/nvram/fw_cfg.h | 3 +++ 9 files changed, 58 insertions(+), 6 deletions(-) --=20 2.4.3