- 02 7月, 2012 4 次提交
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由 Paolo Bonzini 提交于
This command is not necessary for CD-ROM and DVD-ROM, but some versions of udev trip on its absence. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
This command is not necessary for CD-ROM and DVD-ROM, but some versions of udev trip on its absence. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Markus Armbruster <armbru@redhat.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Paolo Bonzini 提交于
The last four bytes of the thin provisioning page were cut out. Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 28 6月, 2012 12 次提交
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由 David Gibson 提交于
Currently the pseries machine emulation does not support DMA for emulated PCI devices, because the PAPR spec always requires a (guest visible, paravirtualized) IOMMU which was not implemented. Now that we have infrastructure for IOMMU emulation, we can correct this and allow PCI DMA for pseries. With the existing PAPR IOMMU code used for VIO devices, this is almost trivial. We use a single DMAContext for each (virtual) PCI host bridge, which is the usual configuration on real PAPR machines (which often have _many_ PCI host bridges). Cc: Alex Graf <agraf@suse.de> Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
This patch adds some hooks to let PCI devices and busses use the new IOMMU infrastructure. When IOMMU support is enabled, each PCI device now contains a DMAContext * which is used by the pci_dma_*() wrapper functions. By default, the contexts are initialized to NULL, assuming no IOMMU. However the platform or host bridge code which sets up the PCI bus can use pci_setup_iommu() to set a function which will determine the correct DMAContext for a given PCI device. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
The pseries platform already contains an IOMMU implementation, since it is essential for the platform's paravirtualized VIO devices. This IOMMU support is currently built into the implementation of the VIO "bus" and the various VIO devices. This patch converts this code to make use of the new common IOMMU infrastructure. We don't yet handle synchronization of map/unmap callbacks vs. invalidations, this will require some complex interaction with the kernel and is not a major concern at this stage. Cc: Alex Graf <agraf@suse.de> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
This patch adds the basic infrastructure necessary to emulate an IOMMU visible to the guest. The DMAContext structure is extended with information and a callback describing the translation, and the various DMA functions used by devices will now perform IOMMU translation using this callback. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
The USB UHCI and EHCI drivers were converted some time ago to use the pci_dma_*() helper functions. However, this conversion was not complete because in some places both these drivers do DMA via the usb_packet_map() function in usb-libhw.c. That function directly used cpu_physical_memory_map(). Now that the sglist code uses DMA wrappers properly, we can convert the functions in usb-libhw.c, thus conpleting the conversion of UHCI and EHCI to use the DMA wrappers. Note that usb_packet_map() invokes dma_memory_map() with a NULL invalidate callback function. When IOMMU support is added, this will mean that usb_packet_map() and the corresponding usb_packet_unmap() must be called in close proximity without dropping the qemu device lock - otherwise the guest might invalidate IOMMU mappings while they are still in use by the device code. Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
The AHCI device can provide both PCI and SysBus AHCI device emulations. For this reason, it wasn't previously converted to use the pci_dma_*() helper functions. Now that we have universal DMA helper functions, this converts AHCI to use them. The DMAContext is obtained from pci_dma_context() in the PCI case and set to NULL in the SysBus case (i.e. we assume for now that a SysBus AHCI has no IOMMU translation). Cc: Kevin Wolf <kwolf@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
dma-helpers.c contains a number of helper functions for doing scatter/gather DMA, and various block device related DMA. Currently, these directly access guest memory using cpu_physical_memory_*(), assuming no IOMMU translation. This patch updates this code to use the new universal DMA helper functions. qemu_sglist_init() now takes a DMAContext * to describe the DMA address space in which the scatter/gather will take place. We minimally update the callers qemu_sglist_init() to pass NULL (i.e. no translation, same as current behaviour). Some of those callers should pass something else in some cases to allow proper IOMMU translation in future, but that will be fixed in later patches. Cc: Kevin Wolf <kwolf@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
The OHCI device emulation can provide both PCI and SysBus OHCI implementations. Because of this, it was not previously converted to use the PCI DMA helper functions. This patch converts it to use the new universal DMA helper functions. In the PCI case, it obtains its DMAContext from pci_dma_context(), in the SysBus case, it uses NULL - i.e. assumes for now that there will be no IOMMU translation for a SysBus OHCI. Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
Not that long ago, every device implementation using DMA directly accessed guest memory using cpu_physical_memory_*(). This meant that adding support for a guest visible IOMMU would require changing every one of these devices to go through IOMMU translation. Shortly before qemu 1.0, I made a start on fixing this by providing helper functions for PCI DMA. These are currently just stubs which call the direct access functions, but mean that an IOMMU can be implemented in one place, rather than for every PCI device. Clearly, this doesn't help for non PCI devices, which could also be IOMMU translated on some platforms. It is also problematic for the devices which have both PCI and non-PCI version (e.g. OHCI, AHCI) - we cannot use the the pci_dma_*() functions, because they assume the presence of a PCIDevice, but we don't want to have to check between pci_dma_*() and cpu_physical_memory_*() every time we do a DMA in the device code. This patch makes the first step on addressing both these problems, by introducing new (stub) dma helper functions which can be used for any DMA capable device. These dma functions take a DMAContext *, a new (currently empty) variable describing the DMA address space in which the operation is to take place. NULL indicates untranslated DMA directly into guest physical address space. The intention is that in future non-NULL values will given information about any necessary IOMMU translation. DMA using devices must obtain a DMAContext (or, potentially, contexts) from their bus or platform. For now this patch just converts the PCI wrappers to be implemented in terms of the universal wrappers, converting other drivers can take place over time. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 David Gibson 提交于
A while back, we introduced the dma_addr_t type, which is supposed to be used for bus visible memory addresses. At present, this is an alias for target_phys_addr_t, but this will change when we eventually add support for guest visible IOMMUs. There are some instances of target_phys_addr_t in the code now which should really be dma_addr_t, but can't be trivially converted due to missing features which this patch corrects. * We add DMA_ADDR_BITS analagous to TARGET_PHYS_ADDR_BITS. This is important where we need to make a compile-time (#if) based on the size of dma_addr_t. * We add a new helper macro to create device properties which take a dma_addr_t, currently an alias to DEFINE_PROP_TADDR(). Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au> Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Jason Wang 提交于
Commit ff71f2e8 prevent the possible crash during initialization of linux driver by checking the operating mode.This seems too strict as: - the real card could still work in mode other than normal - some buggy driver who does not set correct opmode after eeprom access So, considering rx ring address were reset to zero (which could be safely trated as an address not intened to DMA to), in order to both letting old guest work and preventing the unexpected DMA to guest, we can forbid packet receiving when rx ring address is zero. Tested-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NJason Wang <jasowang@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Anthony Liguori 提交于
From Markus: Before: $ qemu-system-x86_64 -display none -drive if=ide qemu-system-x86_64: Device needs media, but drive is empty qemu-system-x86_64: Initialization of device ide-hd failed [Exit 1 ] After: $ qemu-system-x86_64 -display none -drive if=ide qemu-system-x86_64: Device needs media, but drive is empty Segmentation fault (core dumped) [Exit 139 (SIGSEGV)] This error always existed as qdev_init() frees the object. But QOM goes a bit further and purposefully sets the class pointer to NULL to help find use-after-free. It worked :-) Cc: Andreas Faerber <afaerber@suse.de> Reported-by: NMarkus Armbruster <armbru@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 24 6月, 2012 24 次提交
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由 Alexander Graf 提交于
On the e500 series, accessing SPR_EPR magically turns into an access at that CPU's IACK register on the MPIC. Implement that logic to get kernels that make use of that feature work. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Recent u-boot has different defines for its gzip extract buffer, but the common ground seems to be 64MB. So let's bump it up to that, enabling me to load my test image again ;). Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Device trees usually have a node /compatible, which indicate which machine type we're looking at. For quick prototyping, it can be very useful to change the contents of that node via the command line. Thus, introduce a new option to -machine called dt_compatible, which when set changes the /compatible contents to its value. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
When generating serial port device tree nodes, we duplicate quite a bit of code, because there are 2 of them in the mpc8544ds board we emulate. Shove the generating code into a function, so we duplicate less code. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We want to be able to support >= 4GB of RAM. To do so, we need to be able to tell the guest OS how much RAM it has. However, that information today is capped to 32bit. So let's extend the offset and size fields to 64bit, so we can fit in big addresses and even one day - if we wish to do so - map devices above 32bit. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Every time we use an address constant, it needs to potentially fit into a 64bit physical address space. So let's define things accordingly. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Due to popular demand, let's clean up the soc node a bit and use more recent dt notions. Requested-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Due to popular demand, we're updating the way we generate the MPIC node and interrupt lines based on what the current state of art is. Requested-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We want to be able to override the automatically created device tree by using the -dtb option. Implement this for the mpc8544ds machine. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We're passing the ram size as uint32_t, capping it to 32 bits atm. Change to target_phys_addr_t (uint64_t) to make sure we have all the bits. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We have a nice 64bit helper to ease the device tree generation and make the code more readable when creating 64bit 2-cell parameters. Use it when generating the device tree. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Now that we are dynamically creating the dtb, it's really useful to be able to dump the created blob for debugging. This patch implements a -machine dumpdtb=<file> option for e500 that dumps the dtb exactly in the form the guest would get it to disk. It can then be analyzed by dtc to get information about the guest configuration. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Now that all of the device tree bits are generated during runtime, we can get rid of the device tree blob and instead start from scratch with an empty device tree. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Now that we're moving all of the device tree generation from an external pre-execution generated blob to runtime generation using libfdt, we absolutely must have libfdt around. This requirement was there before already, as the only way to not require libfdt with e500 was to not use -kernel, which was the only way to boot the mpc8544ds machine. This patch only manifests said requirement in the build system. Signed-off-by: NAlexander Graf <agraf@suse.de>
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