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[115.64.37.247]) by smtp.gmail.com with ESMTPSA id mq18sm5272438pjb.6.2020.04.17.00.35.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Apr 2020 00:35:21 -0700 (PDT) From: Oliver O'Halloran To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/4] powerpc/powernv/pci: Add helper to find ioda_pe from BDFN Date: Fri, 17 Apr 2020 17:35:05 +1000 Message-Id: <20200417073508.30356-2-oohall@gmail.com> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200417073508.30356-1-oohall@gmail.com> References: <20200417073508.30356-1-oohall@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Oliver O'Halloran Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" For each PHB we maintain a reverse-map that can be used to find the PE that a BDFN is currently mapped to. Add a helper for doing this lookup so we can check if a PE has been configured without looking at pdn->pe_number. Signed-off-by: Oliver O'Halloran --- arch/powerpc/platforms/powernv/pci-ioda.c | 10 ++++++++++ arch/powerpc/platforms/powernv/pci.h | 1 + 2 files changed, 11 insertions(+) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 8ae8836..934cbee 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -660,6 +660,16 @@ static int pnv_ioda_get_pe_state(struct pnv_phb *phb, int pe_no) return state; } +struct pnv_ioda_pe *pnv_pci_bdfn_to_pe(struct pnv_phb *phb, u16 bdfn) +{ + int pe_number = phb->ioda.pe_rmap[bdfn]; + + if (pe_number == IODA_INVALID_PE) + return NULL; + + return &phb->ioda.pe_array[pe_number]; +} + struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index fc05f9b..83d40a0 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -208,6 +208,7 @@ extern int pnv_eeh_phb_reset(struct pci_controller *hose, int option); extern int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type); extern void pnv_teardown_msi_irqs(struct pci_dev *pdev); +extern struct pnv_ioda_pe *pnv_pci_bdfn_to_pe(struct pnv_phb *phb, u16 bdfn); extern struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev); extern void pnv_set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq); extern unsigned long pnv_pci_ioda2_get_table_size(__u32 page_shift, -- 2.9.5