From: Ben Walker <benjamin.walker@intel.com>
To: dev@dpdk.org
Cc: Ben Walker <benjamin.walker@intel.com>
Subject: [dpdk-dev] [PATCH 02/12] eal/pci: Inline several functions into rte_pci_get_iommu_class
Date: Thu, 30 May 2019 10:48:09 -0700 [thread overview]
Message-ID: <20190530174819.1160221-3-benjamin.walker@intel.com> (raw)
In-Reply-To: <20190530174819.1160221-1-benjamin.walker@intel.com>
This is in preparation for future simplifications. The
functions are simply inlined for now.
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Change-Id: I129992c9b44f4575a28cc05b78297e15b6be4249
---
drivers/bus/pci/linux/pci.c | 176 +++++++++++++++---------------------
1 file changed, 71 insertions(+), 105 deletions(-)
diff --git a/drivers/bus/pci/linux/pci.c b/drivers/bus/pci/linux/pci.c
index c99d523f0..d3177916a 100644
--- a/drivers/bus/pci/linux/pci.c
+++ b/drivers/bus/pci/linux/pci.c
@@ -497,86 +497,6 @@ rte_pci_scan(void)
return -1;
}
-/*
- * Is pci device bound to any kdrv
- */
-static inline int
-pci_one_device_is_bound(void)
-{
- struct rte_pci_device *dev = NULL;
- int ret = 0;
-
- FOREACH_DEVICE_ON_PCIBUS(dev) {
- if (dev->kdrv == RTE_KDRV_UNKNOWN ||
- dev->kdrv == RTE_KDRV_NONE) {
- continue;
- } else {
- ret = 1;
- break;
- }
- }
- return ret;
-}
-
-/*
- * Any one of the device bound to uio
- */
-static inline int
-pci_one_device_bound_uio(void)
-{
- struct rte_pci_device *dev = NULL;
- struct rte_devargs *devargs;
- int need_check;
-
- FOREACH_DEVICE_ON_PCIBUS(dev) {
- devargs = dev->device.devargs;
-
- need_check = 0;
- switch (rte_pci_bus.bus.conf.scan_mode) {
- case RTE_BUS_SCAN_WHITELIST:
- if (devargs && devargs->policy == RTE_DEV_WHITELISTED)
- need_check = 1;
- break;
- case RTE_BUS_SCAN_UNDEFINED:
- case RTE_BUS_SCAN_BLACKLIST:
- if (devargs == NULL ||
- devargs->policy != RTE_DEV_BLACKLISTED)
- need_check = 1;
- break;
- }
-
- if (!need_check)
- continue;
-
- if (dev->kdrv == RTE_KDRV_IGB_UIO ||
- dev->kdrv == RTE_KDRV_UIO_GENERIC) {
- return 1;
- }
- }
- return 0;
-}
-
-/*
- * Any one of the device has iova as va
- */
-static inline int
-pci_one_device_has_iova_va(void)
-{
- struct rte_pci_device *dev = NULL;
- struct rte_pci_driver *drv = NULL;
-
- FOREACH_DRIVER_ON_PCIBUS(drv) {
- if (drv && drv->drv_flags & RTE_PCI_DRV_IOVA_AS_VA) {
- FOREACH_DEVICE_ON_PCIBUS(dev) {
- if (dev->kdrv == RTE_KDRV_VFIO &&
- rte_pci_match(drv, dev))
- return 1;
- }
- }
- }
- return 0;
-}
-
#if defined(RTE_ARCH_X86)
static bool
pci_one_device_iommu_support_va(struct rte_pci_device *dev)
@@ -641,14 +561,76 @@ pci_one_device_iommu_support_va(__rte_unused struct rte_pci_device *dev)
#endif
/*
- * All devices IOMMUs support VA as IOVA
+ * Get iommu class of PCI devices on the bus.
*/
-static bool
-pci_devices_iommu_support_va(void)
+enum rte_iova_mode
+rte_pci_get_iommu_class(void)
{
+ bool is_bound = false;
+ bool is_vfio_noiommu_enabled = true;
+ bool has_iova_va = false;
+ bool is_bound_uio = false;
+ bool iommu_no_va = false;
+ bool break_out;
+ bool need_check;
struct rte_pci_device *dev = NULL;
struct rte_pci_driver *drv = NULL;
+ struct rte_devargs *devargs;
+
+ FOREACH_DEVICE_ON_PCIBUS(dev) {
+ if (dev->kdrv == RTE_KDRV_UNKNOWN ||
+ dev->kdrv == RTE_KDRV_NONE) {
+ continue;
+ } else {
+ is_bound = true;
+ break;
+ }
+ }
+ if (!is_bound)
+ return RTE_IOVA_DC;
+ FOREACH_DRIVER_ON_PCIBUS(drv) {
+ if (drv && drv->drv_flags & RTE_PCI_DRV_IOVA_AS_VA) {
+ FOREACH_DEVICE_ON_PCIBUS(dev) {
+ if (dev->kdrv == RTE_KDRV_VFIO &&
+ rte_pci_match(drv, dev)) {
+ has_iova_va = true;
+ break;
+ }
+ }
+
+ if (has_iova_va)
+ break;
+ }
+ }
+
+ FOREACH_DEVICE_ON_PCIBUS(dev) {
+ devargs = dev->device.devargs;
+
+ need_check = false;
+ switch (rte_pci_bus.bus.conf.scan_mode) {
+ case RTE_BUS_SCAN_WHITELIST:
+ if (devargs && devargs->policy == RTE_DEV_WHITELISTED)
+ need_check = true;
+ break;
+ case RTE_BUS_SCAN_UNDEFINED:
+ case RTE_BUS_SCAN_BLACKLIST:
+ if (devargs == NULL ||
+ devargs->policy != RTE_DEV_BLACKLISTED)
+ need_check = true;
+ break;
+ }
+
+ if (!need_check)
+ continue;
+
+ if (dev->kdrv == RTE_KDRV_IGB_UIO ||
+ dev->kdrv == RTE_KDRV_UIO_GENERIC) {
+ is_bound_uio = true;
+ }
+ }
+
+ break_out = false;
FOREACH_DRIVER_ON_PCIBUS(drv) {
FOREACH_DEVICE_ON_PCIBUS(dev) {
if (!rte_pci_match(drv, dev))
@@ -657,31 +639,15 @@ pci_devices_iommu_support_va(void)
* just one PCI device needs to be checked out because
* the IOMMU hardware is the same for all of them.
*/
- return pci_one_device_iommu_support_va(dev);
+ iommu_no_va = !pci_one_device_iommu_support_va(dev);
+ break_out = true;
+ break;
}
- }
- return true;
-}
-/*
- * Get iommu class of PCI devices on the bus.
- */
-enum rte_iova_mode
-rte_pci_get_iommu_class(void)
-{
- bool is_bound;
- bool is_vfio_noiommu_enabled = true;
- bool has_iova_va;
- bool is_bound_uio;
- bool iommu_no_va;
-
- is_bound = pci_one_device_is_bound();
- if (!is_bound)
- return RTE_IOVA_DC;
+ if (break_out)
+ break;
+ }
- has_iova_va = pci_one_device_has_iova_va();
- is_bound_uio = pci_one_device_bound_uio();
- iommu_no_va = !pci_devices_iommu_support_va();
#ifdef VFIO_PRESENT
is_vfio_noiommu_enabled = rte_vfio_noiommu_is_enabled() == true ?
true : false;
--
2.20.1
next prev parent reply other threads:[~2019-05-30 17:49 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 17:48 [dpdk-dev] eal/pci: Improve automatic selection of IOVA mode Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 01/12] eal: Make rte_eal_using_phys_addrs work sooner Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 " Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 02/12] eal/pci: Inline several functions into rte_pci_get_iommu_class Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 03/12] eal/pci: Rework loops in rte_pci_get_iommu_class Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 04/12] eal/pci: Collapse two " Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 05/12] eal/pci: Add function pci_ignore_device Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 06/12] eal/pci: Correctly test whitelist/blacklist in rte_pci_get_iommu_class Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 07/12] eal/pci: Reverse if check " Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 08/12] eal/pci: Collapse loops " Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 09/12] eal/pci: Simplify rte_pci_get_iommu class by using a switch Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 10/12] eal/pci: Finding a device bound to UIO does not force PA Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 11/12] eal/pci: rte_pci_get_iommu_class handles no drivers Ben Walker
2019-05-30 21:29 ` [dpdk-dev] [PATCH v2 12/12] eal: If bus can't decide PA or VA, try to access PA Ben Walker
2019-05-30 17:48 ` Ben Walker [this message]
2019-05-30 17:57 ` [dpdk-dev] [PATCH 02/12] eal/pci: Inline several functions into rte_pci_get_iommu_class Stephen Hemminger
2019-05-30 18:09 ` Walker, Benjamin
2019-05-30 17:48 ` [dpdk-dev] [PATCH 03/12] eal/pci: Rework loops in rte_pci_get_iommu_class Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 04/12] eal/pci: Collapse two " Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 05/12] eal/pci: Add function pci_ignore_device Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 06/12] eal/pci: Correctly test whitelist/blacklist in rte_pci_get_iommu_class Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 07/12] eal/pci: Reverse if check " Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 08/12] eal/pci: Collapse loops " Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 09/12] eal/pci: Simplify rte_pci_get_iommu class by using a switch Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 10/12] eal/pci: Finding a device bound to UIO does not force PA Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 11/12] eal/pci: rte_pci_get_iommu_class handles no drivers Ben Walker
2019-05-30 17:48 ` [dpdk-dev] [PATCH 12/12] eal: If bus can't decide PA or VA, try to access PA Ben Walker
2019-06-03 10:48 ` [dpdk-dev] eal/pci: Improve automatic selection of IOVA mode David Marchand
2019-06-03 16:44 ` Walker, Benjamin
2019-06-14 8:42 ` David Marchand
2019-06-14 9:39 ` [dpdk-dev] [PATCH v2 0/3] " David Marchand
2019-06-14 9:39 ` [dpdk-dev] [PATCH v2 1/3] kni: refuse to initialise when IOVA is not PA David Marchand
2019-06-14 9:39 ` [dpdk-dev] [PATCH v2 2/3] eal: compute IOVA mode based on PA availability David Marchand
2019-07-03 10:17 ` Burakov, Anatoly
2019-07-04 7:13 ` David Marchand
2019-06-14 9:39 ` [dpdk-dev] [PATCH v2 3/3] bus/pci: only consider usable devices to select IOVA mode David Marchand
2019-07-03 10:45 ` Burakov, Anatoly
2019-07-04 9:18 ` David Marchand
2019-07-04 10:43 ` Burakov, Anatoly
2019-07-04 10:47 ` David Marchand
2019-07-04 17:14 ` Stephen Hemminger
2019-07-05 7:58 ` David Marchand
2019-07-05 16:27 ` Stephen Hemminger
2019-07-05 8:26 ` Thomas Monjalon
2019-06-27 17:05 ` [dpdk-dev] [PATCH v2 0/3] Improve automatic selection of " Thomas Monjalon
2019-07-02 14:18 ` Thomas Monjalon
2019-07-05 14:57 ` Thomas Monjalon
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