From: "Ard Biesheuvel" <ard.biesheuvel@arm.com>
To: Wasim Khan <wasim.khan@oss.nxp.com>,
devel@edk2.groups.io, meenakshi.aggarwal@nxp.com,
vabhav.sharma@nxp.com, V.Sethi@nxp.com, leif@nuviainc.com,
jon@solid-run.com
Cc: Wasim Khan <wasim.khan@nxp.com>
Subject: Re: [PATCH edk2-platforms 10/16] Silicon/NXP: PciSegmentLib: Add ECAM config support for PCIe LS Controller
Date: Fri, 22 May 2020 11:36:17 +0200 [thread overview]
Message-ID: <255bb5ca-a094-fc99-a327-c902a6258286@arm.com> (raw)
In-Reply-To: <1590102139-16588-11-git-send-email-wasim.khan@oss.nxp.com>
On 5/22/20 1:02 AM, Wasim Khan wrote:
> From: Wasim Khan <wasim.khan@nxp.com>
>
> PCIe Layerscape controller can be enabled for ECAM style
> configuration access using CFG SHIFT Feature.
>
> Check for PcdPciCfgShiftEnable to decide the configuration access
> scheme to be used with PCIe LS controller.
>
> Signed-off-by: Wasim Khan <wasim.khan@nxp.com>
> ---
> Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.inf | 3 +++
> Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.c | 20 ++++++++++++++++----
> 2 files changed, 19 insertions(+), 4 deletions(-)
>
> diff --git a/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.inf b/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.inf
> index a36e79239b33..936213dc8a9d 100755
> --- a/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.inf
> +++ b/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.inf
> @@ -30,3 +30,6 @@ [LibraryClasses]
>
> [FixedPcd]
> gNxpQoriqLsTokenSpaceGuid.PcdPciExp1BaseAddr
> +
> +[Pcd]
> + gNxpQoriqLsTokenSpaceGuid.PcdPciCfgShiftEnable
> diff --git a/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.c b/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.c
> index ecd36971b753..552a425c6832 100755
> --- a/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.c
> +++ b/Silicon/NXP/Library/PciSegmentLib/PciSegmentLib.c
> @@ -34,6 +34,8 @@ typedef enum {
> #define ASSERT_INVALID_PCI_SEGMENT_ADDRESS(A,M) \
> ASSERT (((A) & (0xffff0000f0000000ULL | (M))) == 0)
>
> +static BOOLEAN CfgShiftEnable;
> +
This is a compile time constant, right? Please try to avoid using
runtime read/write variables in that case, since it defeats the
compiler's ability to remove code that is never executed.
> STATIC
> UINT64
> PciLsCfgTarget (
> @@ -88,11 +90,20 @@ PciLsGetConfigBase (
> {
> UINT32 CfgAddr;
>
> - CfgAddr = (UINT16)Offset;
> - if (Bus) {
> - return PciLsCfgTarget (PCI_SEG0_DBI_BASE + PCI_DBI_SIZE_DIFF * Segment, Address, Segment, Bus, Offset);
> + if (CfgShiftEnable) {
> + CfgAddr = (UINT32)Address;
> + if (Bus) {
> + return PCI_SEG0_MMIO_MEMBASE + PCI_BASE_DIFF * Segment + CfgAddr;
> + } else {
> + return PCI_SEG0_DBI_BASE + PCI_DBI_SIZE_DIFF * Segment + CfgAddr;
> + }
> } else {
> - return PCI_SEG0_DBI_BASE + PCI_DBI_SIZE_DIFF * Segment + CfgAddr;
> + CfgAddr = (UINT16)Offset;
> + if (Bus) {
> + return PciLsCfgTarget (PCI_SEG0_DBI_BASE + PCI_DBI_SIZE_DIFF * Segment, Address, Segment, Bus, Offset);
> + } else {
> + return PCI_SEG0_DBI_BASE + PCI_DBI_SIZE_DIFF * Segment + CfgAddr;
> + }
> }
> }
>
> @@ -608,5 +619,6 @@ PciSegLibInit (
> IN EFI_SYSTEM_TABLE *SystemTable
> )
> {
> + CfgShiftEnable = CFG_SHIFT_ENABLE;
> return EFI_SUCCESS;
> }
>
next prev parent reply other threads:[~2020-05-22 9:36 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 23:02 [PATCH edk2-platforms 00/16] Add PCIe Support Wasim Khan
2020-05-21 23:02 ` [PATCH edk2-platforms 01/16] Silicon/NXP/NxpQoriqLs.dec: Add PCIe related PCDs Wasim Khan
2020-05-22 9:12 ` Ard Biesheuvel
2020-05-24 18:31 ` Wasim Khan (OSS)
2020-05-26 6:16 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 02/16] Silicon/NXP: LS1043A: Define " Wasim Khan
2020-05-21 23:02 ` [PATCH edk2-platforms 03/16] Silicon/NXP: Implement PciHostBridgeLib support Wasim Khan
2020-05-22 9:20 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 04/16] Silicon/NXP: PciHostBridgeLib: CFG Shift feature support for PCIeLS Ctrl Wasim Khan
2020-05-22 9:22 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 05/16] Silicon/NXP: PciHostBridgeLib: Setup PCIe LsGen4 Controller and ATU Windows Wasim Khan
2020-05-22 9:24 ` Ard Biesheuvel
2020-05-24 18:31 ` Wasim Khan (OSS)
2020-05-21 23:02 ` [PATCH edk2-platforms 06/16] Silicon/NXP: PciHostBridgeLib: add Workaround for A-011451 Wasim Khan
2020-05-21 23:02 ` [PATCH edk2-platforms 07/16] Silicon/NXP: PciHostBridgeLib: Dump Layerscale Gen4 ATU windows Wasim Khan
2020-05-22 9:33 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 08/16] Silicon/NXP: PciHostBridgeLib: Dump Layerscale iATU windows Wasim Khan
2020-05-22 9:31 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 09/16] Silicon/NXP: Implement PciSegmentLib for PCIe Layerscape Controller Wasim Khan
2020-05-22 9:29 ` Ard Biesheuvel
2020-05-24 18:32 ` Wasim Khan (OSS)
2020-05-25 4:30 ` Jon Nettleton
2020-05-25 15:21 ` Wasim Khan (OSS)
2020-05-21 23:02 ` [PATCH edk2-platforms 10/16] Silicon/NXP: PciSegmentLib: Add ECAM config support for PCIe LS Controller Wasim Khan
2020-05-22 9:36 ` Ard Biesheuvel [this message]
2020-05-24 18:32 ` Wasim Khan (OSS)
2020-05-21 23:02 ` [PATCH edk2-platforms 11/16] Silicon/NXP: PciSegmentLib: Add support PCIe LsGen4 Controller Wasim Khan
2020-05-22 9:38 ` Ard Biesheuvel
2020-05-24 18:32 ` Wasim Khan (OSS)
2020-05-21 23:02 ` [PATCH edk2-platforms 12/16] Silicon/NXP: PciSegmentLib: LsGen4Ctrl: Add Workaround for A-011264 Wasim Khan
2020-05-22 9:39 ` Ard Biesheuvel
2020-05-24 18:32 ` Wasim Khan (OSS)
2020-05-21 23:02 ` [PATCH edk2-platforms 13/16] Silicon/NXP/Drivers: Implement PciCpuIo2Dxe Driver Wasim Khan
2020-05-22 9:42 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 14/16] Platform/NXP: LS1043aRdbPkg: Enable NetworkPkg Wasim Khan
2020-05-22 9:42 ` Ard Biesheuvel
2020-05-21 23:02 ` [PATCH edk2-platforms 15/16] Platform/NXP: LS1043aRdbPkg: Enable PCIE support Wasim Khan
2020-05-21 23:02 ` [PATCH edk2-platforms 16/16] Platform/NXP: LS1043aRdbPkg : Increase fv image size Wasim Khan
2020-05-22 9:44 ` Ard Biesheuvel
2020-05-22 9:46 ` [PATCH edk2-platforms 00/16] Add PCIe Support Ard Biesheuvel
2020-05-22 10:58 ` Leif Lindholm
2020-05-24 18:32 ` Wasim Khan (OSS)
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