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[83.149.199.196]) by smtp.gmail.com with ESMTPSA id 62sm6826lfz.20.2017.07.19.06.20.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 19 Jul 2017 06:20:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=hXT/RcM25hb7HQyY+MfGQuIQ/PhxWfwZ8gW2c/ejC6M=; b=r66H96KqepMsVEthzS6DK63a6c33w9LAcskuggKAmPBXGJ704wu3Dkv0g7TKu7XT9D tQLTyCNOUNDf7m4lP2OA6X15v0cdZ3v483vgC7OjJOuFKkEoyuQWzMrgLa578jkNXw1g h4CFzh/TaKKA5B6+vvDDDJRIqmU7hNE+MGhwdeMbBC92gf3wTk04JPWIunoqhZW5mxbk R+YzPUE+x4eJGImzuOfIm8xjPSc9KFZaL79DmXZh/5j2GVMV6oRByMdFtVHnU9iKqGuN Uo7ntWBP0fIXW0Eu0JZMiW0oP2x94UpBbyQtsW9ytrUADalxcDFMM29Px22vvm463Jdf quvg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=hXT/RcM25hb7HQyY+MfGQuIQ/PhxWfwZ8gW2c/ejC6M=; b=kjFtvZNLdPBY8v5Z6Q4dgNbAn1sYHOhikiNhrMiSg7nynbYZ97jUZnAnqIboQTeElQ V+q4XENLUvAbZh+PxL05CU6//k1Kc7WESB8zi6Ykf7QF8vx8lZThQc5EmkNEWzPGlsYH 2/6wVM18Q0KbZzAZuZineJENfmIYJSjeLBQDGPJIOj/jIt87Yn4Fruk0WEdg7GpK2d2w 5E6B6ssinCWHjlT1S3u9Cxut6aG8CUkRxZyPgFbRt0tr+vfQvpr3k5BgLwrCaSVkrY7n Wz9wvJAbNPOCytKDk8FiQdJ71eTYf/BT1jI5PzM4iY78MErL1JFS7VxXmMXKVBUehMsX WNaA== X-Gm-Message-State: AIVw1129M9TVFd0TIm74mMmQfnoTBZSfGzmzzGC4QpwPAxxbsGXeNAxa 6R0lTlHp03AsncUc X-Received: by 10.46.82.142 with SMTP id n14mr33086lje.0.1500470424481; Wed, 19 Jul 2017 06:20:24 -0700 (PDT) From: Aleksandr Bezzubikov To: seabios@seabios.org Date: Wed, 19 Jul 2017 16:20:13 +0300 Message-Id: <1500470414-7911-2-git-send-email-zuban32s@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1500470414-7911-1-git-send-email-zuban32s@gmail.com> References: <1500470414-7911-1-git-send-email-zuban32s@gmail.com> X-Spam-Score: -3.0 (---) Subject: [SeaBIOS] [RFC PATCH 1/2] pci: add support for direct usage of bdf for capability lookup X-BeenThere: seabios@seabios.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: SeaBIOS mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcel@redhat.com, qemu-devel@nongnu.org MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Errors-To: seabios-bounces@seabios.org Sender: "SeaBIOS" X-Duff: Orig. Duff, Duff Lite, Duff Dry, Duff Dark, Raspberry Duff, Lady Duff, Red Duff, Tartar Control Duff X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_4 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Add a capability lookup function which gets bdf instead of pci_device as its first argument. It may be useful when we have bdf, but don't have the whole pci_device structure. Signed-off-by: Aleksandr Bezzubikov --- src/hw/pcidevice.c | 24 ++++++++++++++++++++++++ src/hw/pcidevice.h | 1 + 2 files changed, 25 insertions(+) diff --git a/src/hw/pcidevice.c b/src/hw/pcidevice.c index cfebf66..3fa240e 100644 --- a/src/hw/pcidevice.c +++ b/src/hw/pcidevice.c @@ -158,6 +158,30 @@ u8 pci_find_capability(struct pci_device *pci, u8 cap_= id, u8 cap) return 0; } =20 +u8 pci_find_capability_bdf(int bdf, u8 cap_id, u8 cap) +{ + int i; + u16 status =3D pci_config_readw(bdf, PCI_STATUS); + + if (!(status & PCI_STATUS_CAP_LIST)) + return 0; + + if (cap =3D=3D 0) { + /* find first */ + cap =3D pci_config_readb(bdf, PCI_CAPABILITY_LIST); + } else { + /* find next */ + cap =3D pci_config_readb(bdf, cap + PCI_CAP_LIST_NEXT); + } + for (i =3D 0; cap && i <=3D 0xff; i++) { + if (pci_config_readb(bdf, cap + PCI_CAP_LIST_ID) =3D=3D cap_id) + return cap; + cap =3D pci_config_readb(bdf, cap + PCI_CAP_LIST_NEXT); + } + + return 0; +} + // Enable PCI bus-mastering (ie, DMA) support on a pci device void pci_enable_busmaster(struct pci_device *pci) diff --git a/src/hw/pcidevice.h b/src/hw/pcidevice.h index 354b549..e4ed5cf 100644 --- a/src/hw/pcidevice.h +++ b/src/hw/pcidevice.h @@ -70,6 +70,7 @@ int pci_init_device(const struct pci_device_id *ids struct pci_device *pci_find_init_device(const struct pci_device_id *ids , void *arg); u8 pci_find_capability(struct pci_device *pci, u8 cap_id, u8 cap); +u8 pci_find_capability_bdf(int bdf, u8 cap_id, u8 cap); void pci_enable_busmaster(struct pci_device *pci); u16 pci_enable_iobar(struct pci_device *pci, u32 addr); void *pci_enable_membar(struct pci_device *pci, u32 addr); --=20 2.7.4 _______________________________________________ SeaBIOS mailing list SeaBIOS@seabios.org https://mail.coreboot.org/mailman/listinfo/seabios