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 2/9] PCI: Add TPH related register definition
Date: Fri, 7 Jun 2024 11:42:12 -0500 [thread overview]
Message-ID: <20240607164212.GA850739@bhelgaas> (raw)
In-Reply-To: <20240531213841.3246055-3-wei.huang2@amd.com>
On Fri, May 31, 2024 at 04:38:34PM -0500, Wei Huang wrote:
> Linux has some basic, but incomplete, definition for the TPH Requester
> capability registers. Also the control registers of TPH Requester and
> the TPH Completer are missing. This patch adds all required definitions
> to support TPH enablement.
s/This patch adds/Add/
> +#define PCI_EXP_DEVCAP2_TPH_COMP_SHIFT 12
> +#define PCI_EXP_DEVCAP2_TPH_COMP_NONE 0x0 /* None */
> +#define PCI_EXP_DEVCAP2_TPH_COMP_TPH_ONLY 0x1 /* TPH only */
> +#define PCI_EXP_DEVCAP2_TPH_COMP_TPH_AND_EXT 0x3 /* TPH and Extended TPH */
Drop the _SHIFT definitions and use FIELD_GET() and FIELD_PREP()
instead.
> /* TPH Requester */
> #define PCI_TPH_CAP 4 /* capability register */
> +#define PCI_TPH_CAP_NO_ST 0x1 /* no ST mode supported */
> +#define PCI_TPH_CAP_NO_ST_SHIFT 0x0 /* no ST mode supported shift */
Drop _SHIFT and show full register width for PCI_TPH_CAP_NO_ST, e.g.,
#define PCI_TPH_CAP_NO_ST 0x00000001
The existing PCI_TPH_CAP_* definitions don't follow that convention,
but the rest of the file does, and this should match.
next prev parent reply other threads:[~2024-06-07 16:42 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 [this message]
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
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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