Commit Graph

449 Commits

Author SHA1 Message Date
Ferruh Yigit
4b33c132bc kni: fix spacing in compat header
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2016-06-07 11:20:18 +02:00
Ferruh Yigit
e2dc61c806 kni: fix build with kernel 4.7
Fix compile error because of Linux API change, 'trans_start' field
removed from 'struct net_device'.

Linux: 9b36627acecd ("net: remove dev->trans_start")

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2016-06-07 11:19:36 +02:00
Olivier Matz
c69601c4b5 kni: fix build clean on Ubuntu
The $(comma) variable is not defined in this Makefile, nor in
any included Makefile. Seen while doing a "make clean" on ubuntu:

  $ make clean
  == Clean lib
  == Clean lib/librte_compat
  == Clean lib/librte_eal
  == Clean lib/librte_eal/common
  == Clean lib/librte_eal/linuxapp
  == Clean lib/librte_eal/linuxapp/eal
  == Clean lib/librte_eal/linuxapp/igb_uio
  == Clean lib/librte_eal/linuxapp/kni
  tr: missing operand after ‘.-’
  Two strings must be given when translating.
  Try 'tr --help' for more information.

This commit replaces $(comma) by a ',' character, it's not a problem in
that case since we are inside antiquotes.

Fixes: a09b359dac ("kni: fix build on Ubuntu 14.04")

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
Acked-by Ferruh Yigit <ferruh.yigit@intel.com>
2016-06-07 10:26:38 +02:00
Olivier Matz
8dab483701 xen: return machine address without knowing memseg id
The conversion from guest physical address to machine physical address
is fast when the caller knows the memseg corresponding to the gpa.

But in case the user does not know this information, just find it
by browsing the segments. This feature will be used by next commit.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2016-05-19 14:40:14 +02:00
Olivier Matz
593a084afc mem: lock pages when not using hugepages
Although the physical address won't be correct in memory segment,
this allows at least to retrieve the physical address using
rte_mem_virt2phy(). Indeed, if the page is not locked, the page
may not be present in physical memory.

With next commit, it allows a mempool to have properly filled physical
addresses when using --no-huge option.

Signed-off-by: Olivier Matz <olivier.matz@6wind.com>
2016-05-19 14:40:13 +02:00
Ferruh Yigit
d89a58dfe9 kni: support chained mbufs
rx_q fifo may have chained mbufs, merge them into single skb before
handing to the network stack.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2016-05-02 12:37:48 +02:00
Igor Ryzhov
166605b1bf kni: keep ethernet MAC address when interface goes up
Currently every time a KNI interface goes up, its ethernet address
is reassigned.
After this patch ethernet address is assigned only once,
at initialization time.

Suggested-by: Sergey Balabanov <balabanovsv@ecotelecom.ru>
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
2016-05-02 12:37:48 +02:00
Daniel Mrzyglod
cae470b3bf vfio: fix socket option check
Fix issue reported by Coverity.
Coverity ID 13194

The function returns a value that indicates an error condition. If this
is not checked, the error condition may not be handled correctly.

Fixes: 2f4adfad0a ("vfio: add multiprocess support")

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
2016-04-27 17:41:46 +02:00
Thomas Monjalon
7d619406f3 pci: remove deprecated specific config
The driver i40e was using a specific PCI config before the release 16.04.
Since 16.04, it is always enabled in i40e (commit 56465cfaf).
The API has been deprecated in the commit 68f7759382.
The igb_uio implementation has been deprecated in commit b7cf8e155.
The config helper - through igb_uio sysfs entries - is now removed.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2016-04-20 11:53:43 +02:00
Ferruh Yigit
dc10406f3e kni: fix vhost build with kernels 4.2 and 4.4
Fix vhost-kni compile errors because of Linux kernel API changes

- SOCK_ASYNC_WAITDATA renamed to SOCKWQ_ASYNC_WAITDATA
  Linux commit id: 9cd3e072
  Updated in Linux kernel 4.4

- sk_alloc() gets new parameter
  Linux commit id: 11aa9c28b
  Updated in Linux kernel 4.2
  New parameter is: "@kern: is this to be a kernel socket?"

Reported-by: Chintu Hetam <rometoroam@gmail.com>
Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2016-04-11 22:49:31 +02:00
Daniel Mrzyglod
fe671356ed vfio: fix resource leak
Coverity ID 13289: Resource leak:
The system resource will not be reclaimed and reused,
reducing the future availability of the resource.
In pci_vfio_get_group_fd: Leak of memory or pointers to system resources

Fixes: ff0b67d1c8 ("vfio: DMA mapping")

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
2016-04-11 14:35:20 +02:00
Ferruh Yigit
e274c5f024 kni: fix possible deadlock
netif_rx() should be used in interrupt context. Replace it with
netif_rx_ni() which is safe to use in process context.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2016-04-07 19:30:16 +02:00
Anatoly Burakov
d6cf31419e ivshmem: avoid infinite loop when concatenating segments
This patch aligns the logic used to check for the presence of
adjacent segments in has_adjacent_segments() with the logic used
in cleanup_segments() when actually deciding to concatenate or
not a pair of segments. Additionally, adjacent segments are
no longer considered overlapping to avoid generating errors for
segments that can happily coexist together.

This fixes an infinite loop that happened when segments where
adjacent in their physical or virtual addresses but not in their
ioremap addresses: has_adjacent_segments() reported the presence
of adjacent segments while cleanup_segments() was not considering
them for concatenation, resulting in an infinite loop since the
result of has_adjacent_segments() is used in the decision to
continue looping in cleanup_segments().

Signed-off-by: David Verbeiren <david.verbeiren@intel.com>
Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
2016-04-07 19:23:44 +02:00
Daniel Mrzyglod
281948b475 mk: fix missing librt dependencies
For GLIBC < 2.17 it is necessery to add -lrt for linker
from glibc > 2.17 The `clock_*' suite of functions (declared in <time.h>) is now
available directly in the main C library. This affect Ubuntu 12.04 in i686
and other older Linux Distros).

Fixes: 4758404a30 ("mk: fix eal shared library dependencies")

Signed-off-by: Daniel Mrzyglod <danielx.t.mrzyglod@intel.com>
2016-03-22 20:46:53 +01:00
Thomas Monjalon
8744d7a945 mk: restrict CPU flags list
When compiling each file, the CPU flags are given as RTE_MACHINE_CPUFLAG_*
and in the list RTE_COMPILE_TIME_CPUFLAGS.

RTE_MACHINE_CPUFLAG_* are used to check the CPU features when compiling.

The list RTE_COMPILE_TIME_CPUFLAGS is used only to check the CPU at
runtime in the function rte_cpu_check_supported(). So it is not needed to
define this list for every files.
That's why RTE_COMPILE_TIME_CPUFLAGS is removed from the common variable
MACHINE_CFLAGS and is added only to the CFLAGS of eal_common_cpuflags.c.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-03-22 20:18:33 +01:00
David Marchand
2b29a7a4c1 pci: fix ioport support for uio_pci_generic on x86
uio_pci_generic does not offer the same sysfs helpers as igb_uio.
In this case, ioport number can only be retrieved by parsing /proc/ioports.

Fixes: 756ce64b1e ("eal: introduce PCI ioport API")

Reported-by: Mauricio Vasquez B <mauricio.vasquezbernal@studenti.polito.it>
Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-03-16 21:20:37 +01:00
David Marchand
aa664f45cc pci: separate ioport handlers per UIO driver
Prepare for fixes on x86 by separating igb_uio and uio_pci_generic cases.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-03-16 21:20:37 +01:00
David Marchand
1ce8221f37 pci: align ioport special case for x86 in read/write/unmap
Commit b8eb345378 ("pci: ignore devices already managed in Linux when
mapping x86 ioport") did not update other parts of the ioport api.

The application is not supposed to call these read/write/unmap ioport
functions if map call failed but I prefer aligning the code for the sake
of consistency.

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-03-16 21:20:37 +01:00
David Marchand
fd5bc8ff70 pci: align ioport unmap error handling to ioport map
Same idea as commit bd80d4730a ("pci: rework ioport map error handling").

Signed-off-by: David Marchand <david.marchand@6wind.com>
2016-03-16 21:20:37 +01:00
Keith Wiles
6b5a857fb0 eal: decrease log level of some debug messages
When log level is set to 7 (INFO) these messages are still displayed
and should be set to DEBUG.

Signed-off-by: Keith Wiles <keith.wiles@intel.com>
2016-03-13 23:44:35 +01:00
Panu Matilainen
4758404a30 mk: fix eal shared library dependencies
Add DT_NEEDED entries for librte_eal external dependencies.
Details between the platforms differ somewhat, and for static
builds they need to be handled from mk/exec-env still.

Signed-off-by: Panu Matilainen <pmatilai@redhat.com>
2016-03-13 20:27:38 +01:00
Huawei Xie
b8eb345378 pci: ignore devices already managed in Linux when mapping x86 ioport
call pci_ioport_map (on x86) only if the pci device is not bound
to a kernel driver.

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2016-03-10 00:36:51 +01:00
Huawei Xie
bd80d4730a pci: rework ioport map error handling
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2016-03-10 00:36:51 +01:00
Huawei Xie
ee4e23ada8 pci: identify devices not managed by any kernel driver
Use RTE_KDRV_NONE to indicate that kernel driver (other than VFIO/UIO) isn't
managing the device.

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2016-03-10 00:36:51 +01:00
Huawei Xie
b00eca4e5c pci: use new compiler flag for x86
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-03-10 00:36:51 +01:00
Harry van Haaren
dd3e00138d eal: check if primary process is alive
This patch adds a new function to the EAL API:
int rte_eal_primary_proc_alive(const char *path);

The function indicates if a primary process is alive right now.
This functionality is implemented by testing for a write-
lock on the config file, and the function tests for a lock.

The use case for this functionality is that a secondary
process can wait until a primary process starts by polling
the function and waiting. When the primary is running, the
secondary continues to poll to detect if the primary process
has quit unexpectedly, the secondary process can detect this.

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Maryam Tahhan <maryam.tahhan@intel.com>
2016-03-09 16:13:09 +01:00
Harry van Haaren
289d8dd6db eal: fix race condition in multi-process startup
This patch fixes a race-condition when a primary and
secondary process simultaneously probe PCI devices.

This is implemented by moving the rte_eal_mcfg_complete()
function call in rte_eal_init() until after rte_eal_pci_probe().
The memory mapping of PCI device in the secondary process *must*
happen after the primary has finished doing the mapping as it
relies on information written by the primary.

The end result is that the secondary process waits longer,
until the primary has completed its PCI probing, and then
notifies the secondary process.

This race-condition became visible during the development of
a function that allows a secondary process to be polling until
a primary process exists. The secondary would then probe PCI
devices at the same time, causing an error during rte_eal_init()

Linux EAL:
Fixes: 916e4f4f4e ("memory: fix for multi process support")

BSD EAL:
Fixes: 764bf26873 ("add FreeBSD support")

Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2016-03-09 15:56:28 +01:00
Helin Zhang
b7cf8e1559 igb_uio: deprecate extended tag
It deprecates sys files of 'extended_tag' and
'max_read_request_size' which was not documented.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
2016-03-09 01:51:01 +01:00
Helin Zhang
68f7759382 pci: remove config of extended tag
Remove pci configuration of 'extended tag' and 'max read request
size', as they are not required by all devices and it lets PMD to
configure them if necessary.
In addition, 'pci_config_space_set()' is deprecated.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jingjing Wu <jingjing.wu@intel.com>
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-03-09 01:51:00 +01:00
Ferruh Yigit
edc774533f igb_uio: cast private data to correct struct type
This was working fine because addresses of two structs are same:

struct A {
	struct B b;
} a;

As above sample "a" and "b" has same address.

Now casting private data back to the correct struct type, to the one
stored.

Fixes: af75078fec ("first public release")

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2016-03-07 23:27:40 +01:00
Ferruh Yigit
b367a3820d igb_uio: use macros for array size calculation
Minor code cleanup.
Remove array size calculations and remove unnecessary assignment.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
2016-03-07 23:25:59 +01:00
Thomas Monjalon
f9f7c949ff config: remove EAL flags for OS environment
CONFIG_RTE_LIBRTE_EAL_*APP can be replaced by CONFIG_RTE_EXEC_ENV_*APP.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Keith Wiles <keith.wiles@intel.com>
2016-03-05 11:09:31 +01:00
Ralf Hoffmann
a5f6b5ddca eal/linux: change hugepage sorting to avoid overlapping memcpy
with only one hugepage or already sorted hugepage addresses, the sort
function called memcpy with same src and dst pointer. Debugging with
valgrind will issue a warning about overlapping area. This patch changes
the sort method to qsort to avoid this behavior. The separate sort
function is no longer necessary.

Suggested-by: Jay Rolette <rolette@infiniteio.com>
Signed-off-by: Ralf Hoffmann <ralf.hoffmann@allegro-packets.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
2016-03-03 11:36:32 +01:00
Yi Lu
3560681d68 eal/linux: fix build with hpet
Fix compile error when enable CONFIG_RTE_LIBEAL_USE_HPET.

Error messages:
lib/librte_eal/linuxapp/eal/eal_timer.c: In function ‘rte_eal_hpet_init’:
lib/librte_eal/linuxapp/eal/eal_timer.c:222:2: error:
implicit declaration of function ‘rte_thread_setname’

Fixes: badb3688ff ("eal/linux: fix build with glibc < 2.12")

Signed-off-by: Yi Lu <luyi68@live.com>
Acked-by: David Marchand <david.marchand@6wind.com>
2016-03-03 11:36:32 +01:00
Thomas Monjalon
21e10f983e eal: fix symbol map version number
The version 2.3 has been renamed 16.04.

Fixes: 6d7de6d2e3 ("version: switch to year.month numbers")

Reported-by: Panu Matilainen <pmatilai@redhat.com>
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-03-03 11:36:32 +01:00
Stephen Hemminger
726da47b20 log: add missing symbols
rte_get_log_type and rte_get_log_level functions has been available
for many versions. But they are missing from the shared library map
and therefore do not get exported correctly.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-02-29 16:06:11 +01:00
Santosh Shukla
c316ed45bd vfio: support PCI ioport
Include vfio map/rd/wr support for pci ioport.

Signed-off-by: Santosh Shukla <sshukla@mvista.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Acked-by: David Marchand <david.marchand@6wind.com>
Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-02-24 11:44:55 +01:00
Santosh Shukla
c5d8315f97 vfio: ignore mapping for ioport region
vfio_pci_mmap() try to map all pci bars. ioport region are not mapped in
vfio/kernel so ignore mmaping for ioport.

Signed-off-by: Santosh Shukla <sshukla@mvista.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-02-24 11:44:55 +01:00
Santosh Shukla
0291476ae3 eal/linux: never check iopl for arm
iopl() syscall not supported in linux-arm/arm64 so always return 0 value.

Suggested-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Santosh Shukla <sshukla@mvista.com>
Acked-by: Jan Viktorin <viktorin@rehivetech.com>
Acked-by: David Marchand <david.marchand@6wind.com>
Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-02-24 11:44:55 +01:00
David Marchand
756ce64b1e eal: introduce PCI ioport API
Most of the code is inspired on virtio driver.
rte_pci_ioport structure is filled at map time with anything needed for later
read / write calls.
At the moment, base field is used to store a x86 ioport (uint16_t) and will
be reused for other arches.

Signed-off-by: David Marchand <david.marchand@6wind.com>
Tested-by: Santosh Shukla <sshukla@mvista.com>
Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-02-16 22:55:44 +01:00
Thomas Monjalon
ba560ac30c eal: move CPU flag functions out of headers
The patch c344eab3ee has moved the hardware definition of CPU flags.
Now the functions checking these hardware flags are also moved.
The function rte_cpu_get_flag_enabled() is no more inline.

The benefits are:
- remove rte_cpu_feature_table from the ABI (recently added)
- hide hardware details from the API
- allow to adapt structures per arch (done in next patch)

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2016-02-16 08:28:00 +01:00
Thomas Monjalon
9f8faed956 eal: get CPU flag name
The new function rte_cpu_get_flag_name() is added to the EAL API.
It is implemented (duplicated) in each arch because the next patch
will remove the public exposure of the feature tables.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-02-16 08:28:00 +01:00
Jerin Jacob
99a5744147 mbuf: fix performance with 128-byte cache line
No need to split mbuf structure to two cache lines for 128-byte cache
line size targets as it can fit on a single 128-byte cache line.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
2016-02-11 12:45:35 +01:00
Jerin Jacob
6e757e6942 config: clean cache line size selection scheme
by default, all the targets will be configured with the 64-byte cache line
size, targets which have different cache line size can be overridden
through target specific config file.

Selected ThunderX and power8 as CONFIG_RTE_CACHE_LINE_SIZE=128 targets
based on existing configuration.

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-02-11 12:45:35 +01:00
Thomas Monjalon
50810f095a config: remove useless explicit includes of generated header
The file rte_config.h is automatically generated and included.
No need to #include it.

The example performance-thread needs a makefile fix to avoid
overwriting the default cflags.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
2016-02-10 22:43:38 +01:00
Huawei Xie
693f715da4 remove extra parentheses in return statement
fix the error reported by checkpatch:
  "ERROR: return is not a function, parentheses are not required"

remove parentheses in return like:
  "return (logical expressions)"

remove parentheses in return a function like:
  "return (rte_mempool_lookup(...))"

Fixes: 6307b909b8 ("lib: remove extra parenthesis after return")

Signed-off-by: Huawei Xie <huawei.xie@intel.com>
2016-02-10 15:47:50 +01:00
Kamil Rytarowski
6e7caa1ad9 eal/linux: support built-in kernel modules
Currently rte_eal_check_module() detects Linux kernel modules via reading
/proc/modules. Built-in ones aren't listed there and therefore they are not
being found.

Add support for checking built-in modules with parsing the sysfs files

This commit obsoletes the /proc/modules parsing approach.

Signed-off-by: Kamil Rytarowski <kamil.rytarowski@caviumnetworks.com>
Acked-by: David Marchand <david.marchand@6wind.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
2016-02-09 16:03:46 +01:00
Yuanhan Liu
962cf902e6 pci: export device mapping functions
Normally we could set RTE_PCI_DRV_NEED_MAPPING flag so that eal will
invoke pci_map_device internally for us. From that point view, there
is no need to export pci_map_device.

However, for virtio pmd driver, which is designed to work without
binding UIO (or something similar first), pci_map_device() will fail,
which ends up with virtio pmd driver being skipped. Therefore, we can
not set RTE_PCI_DRV_NEED_MAPPING blindly at virtio pmd driver.

Therefore, this patch exports pci_map_device, and let virtio pmd call
it when necessary.

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Santosh Shukla <sshukla@mvista.com>
Tested-by: Qian Xu <qian.q.xu@intel.com>
Reviewed-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Tested-by: Tetsuya Mukawa <mukawa@igel.co.jp>
Acked-by: David Marchand <david.marchand@6wind.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
2016-02-03 16:07:50 +01:00
Ferruh Yigit
c344eab3ee eal: move cpu flags out of headers
Move cpu_feature_table array from arch specific rte_cpuflags.h files to
new arch specific rte_cpuflags.c files.

Main motivation is to escape from static variable declarations in
header files. cpu_feature_table has many copies in final binary, even
exist in some object files that does not use this variable at all.

And this can be a sample to create architecture specific source files
and move some functions which are not performance sensitive from
architecture header files to source files.

Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
2016-01-29 19:41:48 +01:00
Anatoly Burakov
e61512e406 vfio: support no-IOMMU mode
This commit is adding a generic mechanism to support multiple IOMMU
types. For now, it's only type 1 (x86 IOMMU) and no-IOMMU (a special
VFIO mode that doesn't use IOMMU at all), but it's easily extended
by adding necessary definitions to eal_vfio.h, and DMA mapping
functions to eal_pci_vfio.c.

Since type 1 IOMMU module is no longer necessary to have VFIO,
we fix the module check to check for vfio-pci instead. It's not
ideal and triggers VFIO checks more often (and thus produces more
error output, which was the reason behind the module check in the
first place), so we compensate for that by providing more verbose
logging, indicating whether VFIO initialization has succeeded or
failed.

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
Signed-off-by: Santosh Shukla <sshukla@mvista.com>
Tested-by: Santosh Shukla <sshukla@mvista.com>
2016-01-28 17:56:05 +01:00