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Thu, 1 Jul 2021 13:27:58 +0000 (GMT) Received: from yukon.ibmuc.com (unknown [9.171.33.183]) by smtp.tlslab.ibm.com (Postfix) with ESMTP id 8732722016C; Thu, 1 Jul 2021 15:27:57 +0200 (CEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 02/32] powerpc/pseries/pci: Introduce rtas_prepare_msi_irqs() Date: Thu, 1 Jul 2021 15:27:20 +0200 Message-Id: <20210701132750.1475580-3-clg@kaod.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210701132750.1475580-1-clg@kaod.org> References: <20210701132750.1475580-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: EjQUiDUdetcZgqNXoCkHvjayEqF-uXUM X-Proofpoint-ORIG-GUID: EjQUiDUdetcZgqNXoCkHvjayEqF-uXUM X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.790 definitions=2021-07-01_07:2021-07-01, 2021-07-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 mlxscore=0 spamscore=0 bulkscore=0 mlxlogscore=964 priorityscore=1501 phishscore=0 malwarescore=0 suspectscore=0 impostorscore=0 clxscore=1034 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107010082 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This splits the routine setting the MSIs in two parts: allocation of MSIs for the PCI device at the FW level (RTAS) and the actual mapping and activation of the IRQs. rtas_prepare_msi_irqs() will serve as a handler for the PCI MSI domain. Signed-off-by: C=C3=A9dric Le Goater --- arch/powerpc/platforms/pseries/msi.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platform= s/pseries/msi.c index d2d090e04745..4bf14f27e1aa 100644 --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -373,12 +373,11 @@ static void rtas_hack_32bit_msi_gen2(struct pci_dev= *pdev) pci_write_config_dword(pdev, pdev->msi_cap + PCI_MSI_ADDRESS_HI, 0); } =20 -static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int ty= pe) +static int rtas_prepare_msi_irqs(struct pci_dev *pdev, int nvec_in, int = type, + msi_alloc_info_t *arg) { struct pci_dn *pdn; - int hwirq, virq, i, quota, rc; - struct msi_desc *entry; - struct msi_msg msg; + int quota, rc; int nvec =3D nvec_in; int use_32bit_msi_hack =3D 0; =20 @@ -456,6 +455,22 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev,= int nvec_in, int type) return rc; } =20 + return 0; +} + +static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec_in, int ty= pe) +{ + struct pci_dn *pdn; + int hwirq, virq, i; + int rc; + struct msi_desc *entry; + struct msi_msg msg; + + rc =3D rtas_prepare_msi_irqs(pdev, nvec_in, type, NULL); + if (rc) + return rc; + + pdn =3D pci_get_pdn(pdev); i =3D 0; for_each_pci_msi_entry(entry, pdev) { hwirq =3D rtas_query_irq_number(pdn, i++); --=20 2.31.1