From: Bjorn Helgaas <helgaas@kernel.org>
To: Wei Huang <wei.huang2@amd.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, netdev@vger.kernel.org,
bhelgaas@google.com, corbet@lwn.net, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
alex.williamson@redhat.com, gospo@broadcom.com,
michael.chan@broadcom.com, ajit.khaparde@broadcom.com,
somnath.kotur@broadcom.com, andrew.gospodarek@broadcom.com,
manoj.panicker2@amd.com, Eric.VanTassell@amd.com,
vadim.fedorenko@linux.dev, horms@kernel.org,
bagasdotme@gmail.com
Subject: Re: [PATCH V2 4/9] PCI/TPH: Implement a command line option to force No ST Mode
Date: Fri, 7 Jun 2024 12:42:37 -0500 [thread overview]
Message-ID: <20240607174237.GA853301@bhelgaas> (raw)
In-Reply-To: <20240531213841.3246055-5-wei.huang2@amd.com>
On Fri, May 31, 2024 at 04:38:36PM -0500, Wei Huang wrote:
> When "No ST mode" is enabled, end-point devices can generate TPH headers
> but with all steering tags treated as zero. A steering tag of zero is
> interpreted as "using the default policy" by the root complex. This is
> essential to quantify the benefit of steering tags for some given
> workloads.
> #ifdef CONFIG_PCIE_TPH
> int pcie_tph_disable(struct pci_dev *dev);
> +int tph_set_dev_nostmode(struct pci_dev *dev);
Exported functions need a "pci" or "pcie_" prefix. We haven't been
completely consistent on this; we have "pci_acs_*", which is obviously
PCIe-specific, but we do also have pcie_find_root_port() etc.
next prev parent reply other threads:[~2024-06-07 17:42 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-31 21:38 [PATCH V2 0/9] PCIe TPH and cache direct injection support Wei Huang
2024-05-31 21:38 ` [PATCH V2 1/9] PCI: Introduce PCIe TPH support framework Wei Huang
2024-06-07 15:56 ` Jonathan Cameron
2024-06-07 16:27 ` Bjorn Helgaas
2024-05-31 21:38 ` [PATCH V2 2/9] PCI: Add TPH related register definition Wei Huang
2024-06-07 16:17 ` Jonathan Cameron
2024-06-10 20:00 ` Wei Huang
2024-06-07 16:42 ` Bjorn Helgaas
2024-06-10 20:04 ` Wei Huang
2024-05-31 21:38 ` [PATCH V2 3/9] PCI/TPH: Implement a command line option to disable TPH Wei Huang
2024-06-07 16:27 ` Jonathan Cameron
2024-06-07 19:59 ` Bjorn Helgaas
2024-05-31 21:38 ` [PATCH V2 4/9] PCI/TPH: Implement a command line option to force No ST Mode Wei Huang
2024-06-07 16:32 ` Jonathan Cameron
2024-06-07 17:42 ` Bjorn Helgaas [this message]
2024-05-31 21:38 ` [PATCH V2 5/9] PCI/TPH: Introduce API functions to manage steering tags Wei Huang
2024-06-06 22:30 ` kernel test robot
2024-06-07 17:29 ` Jonathan Cameron
2024-06-07 17:45 ` Bjorn Helgaas
2024-05-31 21:38 ` [PATCH V2 6/9] PCI/TPH: Retrieve steering tag from ACPI _DSM Wei Huang
2024-06-04 15:30 ` Simon Horman
2024-06-05 19:34 ` Wei Huang
2024-06-07 17:39 ` Jonathan Cameron
2024-06-07 18:43 ` Bjorn Helgaas
2024-05-31 21:38 ` [PATCH V2 7/9] PCI/TPH: Add TPH documentation Wei Huang
2024-06-07 17:43 ` Jonathan Cameron
2024-05-31 21:38 ` [PATCH V2 8/9] bnxt_en: Add TPH support in BNXT driver Wei Huang
2024-05-31 21:38 ` [PATCH V2 9/9] bnxt_en: Pass NQ ID to the FW when allocating RX/RX AGG rings Wei Huang
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