From: Huacai Chen <chenhuacai@loongson.cn>
To: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org, dri-devel@lists.freedesktop.org,
Xuefeng Li <lixuefeng@loongson.cn>,
Huacai Chen <chenhuacai@gmail.com>
Subject: [PATCH V4 01/10] PCI/VGA: Move vgaarb to drivers/pci
Date: Fri, 27 Aug 2021 16:31:20 +0800 [thread overview]
Message-ID: <20210827083129.2781420-2-chenhuacai@loongson.cn> (raw)
In-Reply-To: <20210827083129.2781420-1-chenhuacai@loongson.cn>
From: Bjorn Helgaas <bhelgaas@google.com>
The VGA arbiter is really PCI-specific and doesn't depend on any GPU
things. Move it to the PCI subsystem.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
drivers/gpu/vga/Kconfig | 19 -------------------
drivers/gpu/vga/Makefile | 1 -
drivers/pci/Kconfig | 19 +++++++++++++++++++
drivers/pci/Makefile | 1 +
drivers/{gpu/vga => pci}/vgaarb.c | 0
5 files changed, 20 insertions(+), 20 deletions(-)
rename drivers/{gpu/vga => pci}/vgaarb.c (100%)
diff --git a/drivers/gpu/vga/Kconfig b/drivers/gpu/vga/Kconfig
index 1ad4c4ef0b5e..eb8b14ab22c3 100644
--- a/drivers/gpu/vga/Kconfig
+++ b/drivers/gpu/vga/Kconfig
@@ -1,23 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
-config VGA_ARB
- bool "VGA Arbitration" if EXPERT
- default y
- depends on (PCI && !S390)
- help
- Some "legacy" VGA devices implemented on PCI typically have the same
- hard-decoded addresses as they did on ISA. When multiple PCI devices
- are accessed at same time they need some kind of coordination. Please
- see Documentation/gpu/vgaarbiter.rst for more details. Select this to
- enable VGA arbiter.
-
-config VGA_ARB_MAX_GPUS
- int "Maximum number of GPUs"
- default 16
- depends on VGA_ARB
- help
- Reserves space in the kernel to maintain resource locking for
- multiple GPUS. The overhead for each GPU is very small.
-
config VGA_SWITCHEROO
bool "Laptop Hybrid Graphics - GPU switching support"
depends on X86
diff --git a/drivers/gpu/vga/Makefile b/drivers/gpu/vga/Makefile
index e92064442d60..9800620deda3 100644
--- a/drivers/gpu/vga/Makefile
+++ b/drivers/gpu/vga/Makefile
@@ -1,3 +1,2 @@
# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_VGA_ARB) += vgaarb.o
obj-$(CONFIG_VGA_SWITCHEROO) += vga_switcheroo.o
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index 0c473d75e625..7c9e56d7b857 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -252,6 +252,25 @@ config PCIE_BUS_PEER2PEER
endchoice
+config VGA_ARB
+ bool "VGA Arbitration" if EXPERT
+ default y
+ depends on (PCI && !S390)
+ help
+ Some "legacy" VGA devices implemented on PCI typically have the same
+ hard-decoded addresses as they did on ISA. When multiple PCI devices
+ are accessed at same time they need some kind of coordination. Please
+ see Documentation/gpu/vgaarbiter.rst for more details. Select this to
+ enable VGA arbiter.
+
+config VGA_ARB_MAX_GPUS
+ int "Maximum number of GPUs"
+ default 16
+ depends on VGA_ARB
+ help
+ Reserves space in the kernel to maintain resource locking for
+ multiple GPUS. The overhead for each GPU is very small.
+
source "drivers/pci/hotplug/Kconfig"
source "drivers/pci/controller/Kconfig"
source "drivers/pci/endpoint/Kconfig"
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index d62c4ac4ae1b..ebe720f69b15 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_PCI_PF_STUB) += pci-pf-stub.o
obj-$(CONFIG_PCI_ECAM) += ecam.o
obj-$(CONFIG_PCI_P2PDMA) += p2pdma.o
obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o
+obj-$(CONFIG_VGA_ARB) += vgaarb.o
# Endpoint library must be initialized before its users
obj-$(CONFIG_PCI_ENDPOINT) += endpoint/
diff --git a/drivers/gpu/vga/vgaarb.c b/drivers/pci/vgaarb.c
similarity index 100%
rename from drivers/gpu/vga/vgaarb.c
rename to drivers/pci/vgaarb.c
--
2.27.0
next prev parent reply other threads:[~2021-08-27 8:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 8:31 [PATCH V4 00/10] PCI/VGA: Rework default VGA device selection Huacai Chen
2021-08-27 8:31 ` Huacai Chen [this message]
2021-08-27 8:31 ` [PATCH V4 02/10] PCI/VGA: Replace full MIT license text with SPDX identifier Huacai Chen
2021-08-27 8:31 ` [PATCH V4 03/10] PCI/VGA: Use unsigned format string to print lock counts Huacai Chen
2021-08-27 8:31 ` [PATCH V4 04/10] PCI/VGA: Remove empty vga_arb_device_card_gone() Huacai Chen
2021-08-27 8:31 ` [PATCH V4 05/10] PCI/VGA: Move vga_arb_integrated_gpu() earlier in file Huacai Chen
2021-08-27 8:31 ` [PATCH V4 06/10] PCI/VGA: Prefer vga_default_device() Huacai Chen
2021-08-27 8:31 ` [PATCH V4 07/10] PCI/VGA: Split out vga_arb_update_default_device() Huacai Chen
2021-08-27 8:31 ` [PATCH V4 08/10] PCI/VGA: Log bridge control messages when adding devices Huacai Chen
2021-08-27 8:31 ` [PATCH V4 09/10] PCI/VGA: Rework default VGA device selection (Step 1) Huacai Chen
2021-08-27 8:31 ` [PATCH V4 10/10] PCI/VGA: Rework default VGA device selection (Step 2) Huacai Chen
2021-09-09 17:59 ` [PATCH V4 00/10] PCI/VGA: Rework default VGA device selection Bjorn Helgaas
2021-09-11 9:17 ` Huacai Chen
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