From: Koichiro Den <den@valinux.co.jp>
To: ntb@lists.linux.dev, linux-pci@vger.kernel.org,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: mani@kernel.org, kwilczynski@kernel.org, kishon@kernel.org,
bhelgaas@google.com, corbet@lwn.net, vkoul@kernel.org,
jdmason@kudzu.us, dave.jiang@intel.com, allenbh@gmail.com,
Basavaraj.Natikar@amd.com, Shyam-sundar.S-k@amd.com,
kurt.schwemmer@microsemi.com, logang@deltatee.com,
jingoohan1@gmail.com, lpieralisi@kernel.org, robh@kernel.org,
jbrunet@baylibre.com, Frank.Li@nxp.com, fancer.lancer@gmail.com,
arnd@arndb.de, pstanner@redhat.com,
elfring@users.sourceforge.net
Subject: [RFC PATCH 08/25] PCI: endpoint: pci-epf-vntb: Propagate MW offset from configfs when present
Date: Thu, 23 Oct 2025 16:18:59 +0900 [thread overview]
Message-ID: <20251023071916.901355-9-den@valinux.co.jp> (raw)
In-Reply-To: <20251023071916.901355-1-den@valinux.co.jp>
The NTB API functions ntb_mw_set_trans() and ntb_mw_get_align() now
support non-zero MW offsets. Update pci-epf-vntb to populate
mws_offset[idx] when the offset parameter is provided. Users can now get
the offset value and use it on ntb_mw_set_trans().
Signed-off-by: Koichiro Den <den@valinux.co.jp>
---
drivers/pci/endpoint/functions/pci-epf-vntb.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
index becfad483643..6495f99ffd4f 100644
--- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c
@@ -1413,6 +1413,9 @@ static int vntb_epf_mw_get_align(struct ntb_dev *ndev, int pidx, int idx,
if (size_max)
*size_max = ntb->mws_size[idx];
+ if (offset)
+ *offset = ntb->mws_offset[idx];
+
return 0;
}
--
2.48.1
next prev parent reply other threads:[~2025-10-23 7:19 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-23 7:18 [RFC PATCH 00/25] NTB/PCI: Add DW eDMA intr fallback and BAR MW offsets Koichiro Den
2025-10-23 7:18 ` [RFC PATCH 01/25] PCI: endpoint: pci-epf-vntb: Use array_index_nospec() on mws_size[] access Koichiro Den
2025-10-24 0:06 ` Frank Li
2025-10-24 16:24 ` Koichiro Den
2025-10-24 18:40 ` Frank Li
2025-10-23 7:18 ` [RFC PATCH 02/25] PCI: endpoint: pci-epf-vntb: Add mwN_offset configfs attributes Koichiro Den
2025-10-23 7:18 ` [RFC PATCH 03/25] NTB: epf: Handle mwN_offset for inbound MW regions Koichiro Den
2025-10-23 7:18 ` [RFC PATCH 04/25] PCI: endpoint: Add inbound mapping ops to EPC core Koichiro Den
2025-10-23 7:18 ` [RFC PATCH 05/25] PCI: dwc: ep: Implement EPC inbound mapping support Koichiro Den
2025-10-23 7:18 ` [RFC PATCH 06/25] PCI: endpoint: pci-epf-vntb: Use pci_epc_map_inbound() for MW mapping Koichiro Den
2025-10-23 7:18 ` [RFC PATCH 07/25] NTB: Add offset parameter to MW translation APIs Koichiro Den
2025-10-23 7:18 ` Koichiro Den [this message]
2025-10-23 7:19 ` [RFC PATCH 09/25] NTB: ntb_transport: Support offsetted partial memory windows Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 10/25] NTB/msi: Support offsetted partial memory window for MSI Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 11/25] NTB/msi: Do not force MW to its maximum possible size Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 12/25] NTB: ntb_transport: Stricter checks for peer-reported interrupt values Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 13/25] NTB/msi: Skip mw_set_trans() if already configured Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 14/25] NTB/msi: Add a inner loop for PCI-MSI cases Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 15/25] dmaengine: dw-edma: Add self-interrupt registration API Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 16/25] dmaengine: dw-edma: Expose self-IRQ register offsets Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 17/25] dmaengine: dw-edma: Add dw_edma_find_by_child() helper Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 18/25] NTB: core: Add .get_pci_epc() to ntb_dev_ops Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 19/25] NTB: epf: vntb: Implement .get_pci_epc() callback Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 20/25] NTB: ntb_transport: Rename use_msi to use_intr (keep alias) Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 21/25] NTB: Introduce generic interrupt backend abstraction and convert MSI Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 22/25] NTB: ntb_transport: Rename MSI symbols to generic interrupt form Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 23/25] NTB: intr_dw_edma: Add DW eDMA emulated interrupt backend Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 24/25] NTB: epf: Add MW2 for interrupt use on Renesas R-Car Koichiro Den
2025-10-23 7:19 ` [RFC PATCH 25/25] Documentation: PCI: endpoint: pci-epf-vntb: Update and add mwN_offset usage Koichiro Den
2025-10-23 7:55 ` [RFC PATCH 00/25] NTB/PCI: Add DW eDMA intr fallback and BAR MW offsets Jerome Brunet
2025-10-24 16:11 ` Koichiro Den
2025-10-24 3:27 ` Frank Li
2025-10-24 16:04 ` Koichiro Den
2025-10-24 16:43 ` Frank Li
2025-10-27 5:29 ` Koichiro Den
2025-10-28 20:50 ` Frank Li
2025-10-29 7:13 ` Koichiro Den
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