From: Damien Le Moal <dlemoal@kernel.org>
To: "Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Kishon Vijay Abraham I" <kishon@kernel.org>,
"Shawn Lin" <shawn.lin@rock-chips.com>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Heiko Stuebner" <heiko@sntech.de>,
linux-pci@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Subject: [PATCH 11/19] PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr()
Date: Fri, 29 Mar 2024 18:09:37 +0900 [thread overview]
Message-ID: <20240329090945.1097609-12-dlemoal@kernel.org> (raw)
In-Reply-To: <20240329090945.1097609-1-dlemoal@kernel.org>
Add a check to verify that the outbound region to be used for mapping an
address is not already in use.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
drivers/pci/controller/pcie-rockchip-ep.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/pci/controller/pcie-rockchip-ep.c b/drivers/pci/controller/pcie-rockchip-ep.c
index 296916d4a6e4..c2ca7878cee3 100644
--- a/drivers/pci/controller/pcie-rockchip-ep.c
+++ b/drivers/pci/controller/pcie-rockchip-ep.c
@@ -245,6 +245,9 @@ static int rockchip_pcie_ep_map_addr(struct pci_epc *epc, u8 fn, u8 vfn,
struct rockchip_pcie *pcie = &ep->rockchip;
u32 r = rockchip_ob_region(addr);
+ if (test_bit(r, &ep->ob_region_map))
+ return -EBUSY;
+
rockchip_pcie_prog_ep_ob_atu(pcie, fn, r, addr, pci_addr, size);
set_bit(r, &ep->ob_region_map);
--
2.44.0
next prev parent reply other threads:[~2024-03-29 9:10 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-29 9:09 [PATCH 00/19] Improve PCI memory mapping API Damien Le Moal
2024-03-29 9:09 ` [PATCH 01/19] PCI: endpoint: Introduce pci_epc_check_func() Damien Le Moal
2024-03-29 12:33 ` Bjorn Helgaas
2024-03-29 9:09 ` [PATCH 02/19] PCI: endpoint: Improve pci_epc_mem_alloc_addr() Damien Le Moal
2024-03-29 15:32 ` Frank Li
2024-03-29 9:09 ` [PATCH 03/19] PCI: endpoint: Introduce pci_epc_map_align() Damien Le Moal
2024-03-29 9:09 ` [PATCH 04/19] PCI: endpoint: Introduce pci_epc_mem_map()/unmap() Damien Le Moal
2024-03-29 9:09 ` [PATCH 05/19] PCI: endpoint: test: Use pci_epc_mem_map/unmap() Damien Le Moal
2024-03-29 9:09 ` [PATCH 06/19] PCI: endpoint: test: Synchronously cancel command handler work Damien Le Moal
2024-03-29 15:36 ` Frank Li
2024-03-29 9:09 ` [PATCH 07/19] PCI: endpoint: test: Implement link_down event operation Damien Le Moal
2024-03-29 15:37 ` Frank Li
2024-03-29 9:09 ` [PATCH 08/19] PCI: rockchip-ep: Fix address translation unit programming Damien Le Moal
2024-03-29 9:09 ` [PATCH 09/19] PCI: rockchip-ep: use macro to define EP controller .align feature Damien Le Moal
2024-03-29 9:09 ` [PATCH 10/19] PCI: rockchip-ep: Improve rockchip_pcie_ep_unmap_addr() Damien Le Moal
2024-03-29 9:09 ` Damien Le Moal [this message]
2024-03-29 9:09 ` [PATCH 12/19] PCI: rockchip-ep: Implement the map_info endpoint controller operation Damien Le Moal
2024-03-29 9:09 ` [PATCH 13/19] PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() memory allocations Damien Le Moal
2024-03-29 9:09 ` [PATCH 14/19] PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() MSIX hiding Damien Le Moal
2024-03-29 9:09 ` [PATCH 15/19] PCI: rockchip-ep: Refactor endpoint link training enable Damien Le Moal
2024-03-29 9:09 ` [PATCH 16/19] PCI: rockship-ep: Introduce rockchip_pcie_ep_stop() Damien Le Moal
2024-03-29 9:09 ` [PATCH 17/19] PCI: rockchip-ep: Improve link training Damien Le Moal
2024-03-31 2:03 ` kernel test robot
2024-03-29 9:09 ` [PATCH 18/19] dt-bindings: pci: rockchip,rk3399-pcie-ep: Add ep-gpios property Damien Le Moal
2024-03-29 12:28 ` Krzysztof Kozlowski
2024-03-29 9:09 ` [PATCH 19/19] PCI: rockchip-ep: Handle PERST signal in endpoint mode Damien Le Moal
2024-03-30 10:31 ` kernel test robot
2024-03-31 5:40 ` kernel test robot
2024-03-29 12:41 ` [PATCH 00/19] Improve PCI memory mapping API Bjorn Helgaas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240329090945.1097609-12-dlemoal@kernel.org \
--to=dlemoal@kernel.org \
--cc=bhelgaas@google.com \
--cc=heiko@sntech.de \
--cc=kishon@kernel.org \
--cc=kw@linux.com \
--cc=linux-pci@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=manivannan.sadhasivam@linaro.org \
--cc=shawn.lin@rock-chips.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox