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Code Issues Releases Wiki Activity

pci_min driver

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Ciro Santilli
2017-07-09 08:44:01 +01:00
parent 6188bfb86c
commit 1cd55ebf53
6 changed files with 8 additions and 3 deletions
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1
kernel_module/README.md
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@@ -26,6 +26,7 @@
1. [dep2](dep2.c) 1. [dep2](dep2.c)
1. [character_device](character_device.c) 1. [character_device](character_device.c)
1. Hardware device drivers 1. Hardware device drivers
1. [pci_min](pci_min.c)
1. [pci](pci.c) 1. [pci](pci.c)
1. [platform_device](platform_device.c) 1. [platform_device](platform_device.c)
1. [user](user/) 1. [user](user/)

2
kernel_module/pci_min.c
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@@ -2,6 +2,8 @@
Only tested in x86. Only tested in x86.
PCI driver for our minimal pci_min.c QEMU fork device. PCI driver for our minimal pci_min.c QEMU fork device.
probe already does a mmio write, which generates an IRQ and tests everything.
*/ */
#include <asm/uaccess.h> #include <asm/uaccess.h>

4
kernel_module/platform_device.c
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@@ -77,8 +77,8 @@ static int lkmc_platform_device_probe(struct platform_device *pdev)
dev_err(dev, "of_iomap"); dev_err(dev, "of_iomap");
return -EINVAL; return -EINVAL;
} }
dev_info(dev, "res.start = %u resource_size = %llx\n", dev_info(dev, "res.start = %llx resource_size = %llx\n",
res.start, (unsigned long long)resource_size(&res)); (unsigned long long)res.start, (unsigned long long)resource_size(&res));
/* Test MMIO and IRQ. */ /* Test MMIO and IRQ. */
iowrite32(0x12345678, map); iowrite32(0x12345678, map);

2
qemu

Submodule qemu updated: 577f4633f1...22e7e210d6

1
run
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@@ -44,6 +44,7 @@ env \
HOST_QEMU_OPTS="--enable-debug --enable-sdl --extra-cflags='-DDEBUG_PL061=1' --with-sdlabi=2.0" \ HOST_QEMU_OPTS="--enable-debug --enable-sdl --extra-cflags='-DDEBUG_PL061=1' --with-sdlabi=2.0" \
host-qemu-rebuild \ host-qemu-rebuild \
linux-rebuild \ linux-rebuild \
kernel_module-rebuild \
all \ all \
; ;
cd .. cd ..

1
runqemu
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@@ -63,6 +63,7 @@ case "$arch" in
-M pc \ -M pc \
-append 'root=/dev/vda $extra_append' \ -append 'root=/dev/vda $extra_append' \
-device edu \ -device edu \
-device lkmc_pci_min \
-drive file=${images_dir}/rootfs.ext2,if=virtio,format=raw \ -drive file=${images_dir}/rootfs.ext2,if=virtio,format=raw \
-kernel ${images_dir}/bzImage \ -kernel ${images_dir}/bzImage \
-net nic,model=virtio \ -net nic,model=virtio \