From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp01.au.ibm.com ([202.81.31.143]:35750 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965429AbbKDNOA (ORCPT ); Wed, 4 Nov 2015 08:14:00 -0500 Received: from localhost by e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 4 Nov 2015 23:13:58 +1000 From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org Cc: linux-pci@vger.kernel.org, devicetree@vger.kernel.org, benh@kernel.crashing.org, mpe@ellerman.id.au, aik@ozlabs.ru, bhelgaas@google.com, grant.likely@linaro.org, robherring2@gmail.com, panto@antoniou-consulting.com, frowand.list@gmail.com, Gavin Shan Subject: [PATCH v7 12/50] powerpc/powernv: Track M64 segment consumption Date: Thu, 5 Nov 2015 00:12:12 +1100 Message-Id: <1446642770-4681-13-git-send-email-gwshan@linux.vnet.ibm.com> In-Reply-To: <1446642770-4681-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1446642770-4681-1-git-send-email-gwshan@linux.vnet.ibm.com> Sender: linux-pci-owner@vger.kernel.org List-ID: As we track M32 segment consumption, this introduces an array to the PHB to track the mapping between M64 segment and PE number. The information is going to be used to find M64 segment from the PE number during PCI unplugging time in subsequent patches. Signed-off-by: Gavin Shan --- arch/powerpc/platforms/powernv/pci-ioda.c | 10 ++++++++-- arch/powerpc/platforms/powernv/pci.h | 3 ++- 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 4ab93f8..76ce694 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -315,6 +315,7 @@ static int pnv_ioda2_pick_m64_pe(struct pci_bus *bus, bool all) phb->ioda.total_pe_num) { pe = &phb->ioda.pe_array[i]; + phb->ioda.m64_segmap[pe->pe_number] = pe->pe_number; if (!master_pe) { pe->flags |= PNV_IODA_PE_MASTER; INIT_LIST_HEAD(&pe->slaves); @@ -3018,7 +3019,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, { struct pci_controller *hose; struct pnv_phb *phb; - unsigned long size, m32map_off, pemap_off, iomap_off = 0; + unsigned long size, m64map_off, m32map_off, pemap_off, iomap_off = 0; const __be64 *prop64; const __be32 *prop32; int i, len; @@ -3103,6 +3104,8 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, /* Allocate aux data & arrays. We don't have IO ports on PHB3 */ size = _ALIGN_UP(phb->ioda.total_pe_num / 8, sizeof(unsigned long)); + m64map_off = size; + size += phb->ioda.total_pe_num * sizeof(phb->ioda.m64_segmap[0]); m32map_off = size; size += phb->ioda.total_pe_num * sizeof(phb->ioda.m32_segmap[0]); if (phb->type == PNV_PHB_IODA1) { @@ -3113,9 +3116,12 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np, size += phb->ioda.total_pe_num * sizeof(struct pnv_ioda_pe); aux = memblock_virt_alloc(size, 0); phb->ioda.pe_alloc = aux; + phb->ioda.m64_segmap = aux + m64map_off; phb->ioda.m32_segmap = aux + m32map_off; - for (i = 0; i < phb->ioda.total_pe_num; i++) + for (i = 0; i < phb->ioda.total_pe_num; i++) { + phb->ioda.m64_segmap[i] = IODA_INVALID_PE; phb->ioda.m32_segmap[i] = IODA_INVALID_PE; + } if (phb->type == PNV_PHB_IODA1) { phb->ioda.io_segmap = aux + iomap_off; for (i = 0; i < phb->ioda.total_pe_num; i++) diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h index 2e01edd..671fd13 100644 --- a/arch/powerpc/platforms/powernv/pci.h +++ b/arch/powerpc/platforms/powernv/pci.h @@ -147,7 +147,8 @@ struct pnv_phb { unsigned long *pe_alloc; struct pnv_ioda_pe *pe_array; - /* M32 & IO segment maps */ + /* M64/M32/IO segment maps */ + int *m64_segmap; int *m32_segmap; int *io_segmap; -- 2.1.0