From: Yinghai Lu <yinghai@kernel.org>
To: Bjorn Helgaas <bhelgaas@google.com>,
David Miller <davem@davemloft.net>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Wei Yang <weiyang@linux.vnet.ibm.com>, TJ <linux@iam.tj>,
Yijing Wang <wangyijing@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH v2 49/49] PCI: Don't set flags to 0 when assign resource fail
Date: Tue, 14 Jul 2015 15:47:20 -0700 [thread overview]
Message-ID: <1436914040-13206-50-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1436914040-13206-1-git-send-email-yinghai@kernel.org>
make flags take IORESOURCE_UNSET | IORESOURCE_DISABLED instead.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/bus.c | 2 +-
drivers/pci/setup-bus.c | 45 +++++++++++++++++++++++----------------------
drivers/pci/setup-res.c | 3 ++-
3 files changed, 26 insertions(+), 24 deletions(-)
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index b043bdf..b68f1cd 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -140,7 +140,7 @@ static int pci_bus_alloc_from_region(struct pci_bus *bus, struct resource *res,
type_mask |= IORESOURCE_TYPE_BITS;
pci_bus_for_each_resource(bus, r, i) {
- if (!r)
+ if (!r || resource_disabled(r))
continue;
/* type_mask must match */
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 7734be6..a7fbdcc 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -289,13 +289,6 @@ static void __dev_check_resources(struct pci_dev *dev,
pdev_check_resources(dev, realloc_head, head);
}
-static inline void reset_resource(struct resource *res)
-{
- res->start = 0;
- res->end = 0;
- res->flags = 0;
-}
-
static void __sort_resources(struct list_head *head)
{
struct pci_dev_resource *res1, *tmp_res, *res2;
@@ -398,7 +391,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
res->start = align;
res->end = res->start + add_size - 1;
if (pci_assign_resource(add_res->dev, idx))
- reset_resource(res);
+ res->flags |= IORESOURCE_DISABLED;
} else {
/* could just assigned with alt, add difference ? */
resource_size_t must_size;
@@ -451,7 +444,7 @@ static void assign_requested_resources_sorted(struct list_head *head,
pci_assign_resource(dev_res->dev, idx)) {
if (fail_head)
add_to_list(fail_head, dev_res->dev, res);
- reset_resource(res);
+ res->flags |= IORESOURCE_DISABLED;
}
}
}
@@ -737,7 +730,7 @@ static void __assign_resources_alt_sorted(struct list_head *head,
if (!res_to_dev_res(local_fail_head, res))
add_to_list(local_fail_head, fail_res->dev, res);
- reset_resource(res);
+ res->flags |= IORESOURCE_DISABLED;
}
free_list(&local_alt_fail_head);
}
@@ -903,7 +896,7 @@ static void pci_setup_bridge_io(struct pci_dev *bridge)
/* Set up the top and bottom of the PCI I/O segment for this bus. */
res = &bridge->resource[PCI_BRIDGE_RESOURCES + 0];
pcibios_resource_to_bus(bridge->bus, ®ion, res);
- if (res->flags & IORESOURCE_IO) {
+ if ((res->flags & IORESOURCE_IO) && !(res->flags & IORESOURCE_UNSET)) {
pci_read_config_word(bridge, PCI_IO_BASE, &l);
io_base_lo = (region.start >> 8) & io_mask;
io_limit_lo = (region.end >> 8) & io_mask;
@@ -933,7 +926,8 @@ static void pci_setup_bridge_mmio(struct pci_dev *bridge)
/* Set up the top and bottom of the PCI Memory segment for this bus. */
res = &bridge->resource[PCI_BRIDGE_RESOURCES + 1];
pcibios_resource_to_bus(bridge->bus, ®ion, res);
- if (res->flags & IORESOURCE_MEM) {
+ if ((res->flags & IORESOURCE_MEM) &&
+ !(res->flags & IORESOURCE_UNSET)) {
l = (region.start >> 16) & 0xfff0;
l |= region.end & 0xfff00000;
dev_info(&bridge->dev, " bridge window %pR\n", res);
@@ -958,7 +952,8 @@ static void pci_setup_bridge_mmio_pref(struct pci_dev *bridge)
bu = lu = 0;
res = &bridge->resource[PCI_BRIDGE_RESOURCES + 2];
pcibios_resource_to_bus(bridge->bus, ®ion, res);
- if (res->flags & IORESOURCE_PREFETCH) {
+ if ((res->flags & IORESOURCE_PREFETCH) &&
+ !(res->flags & IORESOURCE_UNSET)) {
l = (region.start >> 16) & 0xfff0;
l |= region.end & 0xfff00000;
if (res->flags & IORESOURCE_MEM_64) {
@@ -1077,6 +1072,7 @@ static void pci_bridge_check_ranges(struct pci_bus *bus)
b_res = &bridge->resource[PCI_BRIDGE_RESOURCES];
b_res[1].flags |= IORESOURCE_MEM;
+ b_res[1].flags &= ~IORESOURCE_DISABLED;
pci_read_config_word(bridge, PCI_IO_BASE, &io);
if (!io) {
@@ -1084,8 +1080,10 @@ static void pci_bridge_check_ranges(struct pci_bus *bus)
pci_read_config_word(bridge, PCI_IO_BASE, &io);
pci_write_config_word(bridge, PCI_IO_BASE, 0x0);
}
- if (io)
+ if (io) {
b_res[0].flags |= IORESOURCE_IO;
+ b_res[0].flags &= ~IORESOURCE_DISABLED;
+ }
/* DECchip 21050 pass 2 errata: the bridge may miss an address
disconnect boundary by one PCI data phase.
@@ -1102,6 +1100,7 @@ static void pci_bridge_check_ranges(struct pci_bus *bus)
}
if (pmem) {
b_res[2].flags |= IORESOURCE_MEM | IORESOURCE_PREFETCH;
+ b_res[2].flags &= ~IORESOURCE_DISABLED;
if ((pmem & PCI_PREF_RANGE_TYPE_MASK) ==
PCI_PREF_RANGE_TYPE_64) {
b_res[2].flags |= IORESOURCE_MEM_64;
@@ -1247,8 +1246,10 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
struct resource *r = &dev->resource[i];
unsigned long r_size, r_add_size;
- if (r->parent || !(r->flags & IORESOURCE_IO))
+ if (r->parent || !(r->flags & IORESOURCE_IO) ||
+ resource_disabled(r))
continue;
+
r_size = resource_size(r);
if (r_size < 0x400)
@@ -1289,7 +1290,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
if (b_res->start || b_res->end)
dev_info(&bus->self->dev, "disabling bridge window %pR to %pR (unused)\n",
b_res, &bus->busn_res);
- b_res->flags = 0;
+ b_res->flags |= IORESOURCE_UNSET | IORESOURCE_DISABLED;
return;
}
@@ -1563,7 +1564,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (r->parent || ((flags & mask) != type &&
(flags & mask) != type2 &&
- (flags & mask) != type3))
+ (flags & mask) != type3) ||
+ resource_disabled(r))
continue;
r_size = resource_size(r);
@@ -1584,7 +1586,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (align > (1ULL<<37)) { /*128 Gb*/
dev_warn(&dev->dev, "disabling BAR %d: %pR (bad alignment %#llx)\n",
i, r, (unsigned long long) align);
- r->flags = 0;
+ r->flags |= IORESOURCE_UNSET |
+ IORESOURCE_DISABLED;
continue;
}
@@ -1671,7 +1674,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (b_res->start || b_res->end)
dev_info(&bus->self->dev, "disabling bridge window %pR to %pR (unused)\n",
b_res, &bus->busn_res);
- b_res->flags = 0;
+ b_res->flags |= IORESOURCE_UNSET | IORESOURCE_DISABLED;
return 0;
}
b_res->start = min_align;
@@ -2076,7 +2079,7 @@ static void pci_bridge_release_resources(struct pci_bus *bus,
/* keep the old size */
r->end = resource_size(r) - 1;
r->start = 0;
- r->flags = 0;
+ r->flags |= IORESOURCE_UNSET | IORESOURCE_DISABLED;
/* avoiding touch the one without PREF */
if (type & IORESOURCE_PREFETCH)
@@ -2334,7 +2337,6 @@ again:
restore_resource(fail_res, res);
if (fail_res->dev->subordinate) {
- res->flags = 0;
/* last or third times and later */
if (tried_times + 1 == pci_try_num ||
tried_times + 1 > 2) {
@@ -2420,7 +2422,6 @@ again:
restore_resource(fail_res, res);
if (fail_res->dev->subordinate) {
- res->flags = 0;
/* last time */
res->start = 0;
res->end = res->start - 1;
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 55caf7a..d17f23c 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -364,7 +364,8 @@ int pci_enable_resources(struct pci_dev *dev, int mask)
r = &dev->resource[i];
- if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
+ if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)) ||
+ resource_disabled(r))
continue;
if ((i == PCI_ROM_RESOURCE) &&
(!(r->flags & IORESOURCE_ROM_ENABLE)))
--
1.8.4.5
next prev parent reply other threads:[~2015-07-14 22:53 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-14 22:46 [PATCH v2 00/49] PCI: Resource allocation cleanup for v4.3 Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 01/49] PCI: Cleanup res_to_dev_res() printout for addon resources Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 02/49] PCI: Reuse res_to_dev_res in reassign_resources_sorted Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 03/49] PCI: Use correct align for optional only resources during sorting Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 04/49] PCI: Optimize bus align/size calculation during sizing Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 05/49] PCI: Optimize bus align/size calculation for optional " Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 06/49] PCI: Don't add too much optional size for hotplug bridge mmio Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 07/49] PCI: Reorder resources list for must/optional resources Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 08/49] PCI: Remove duplicated code for resource sorting Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 09/49] PCI: Rename pdev_sort_resources to pdev_check_resources Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 10/49] PCI: Treat ROM resource as optional during realloc Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 11/49] PCI: Add debug printout during releasing partial assigned resources Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 12/49] PCI: Simplify res reference using in __assign_resourcs_sorted Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 13/49] PCI: Separate realloc list checking after allocation Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 14/49] PCI: Add __add_to_list() Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 15/49] PCI: Cache window alignment value Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 16/49] PCI: Check if resource is allocated before pci_assign Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 17/49] PCI: Separate out save_resources/restore_resource Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 18/49] PCI: Move comment to pci_need_to_release() Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 19/49] PCI: Separate must+optional assigning to another function Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 20/49] PCI: Skip must+optional if there is no optional addon Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 21/49] PCI: Move saved required resource list out of must+optional assigning Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 22/49] PCI: Add alt_size allocation support Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 23/49] PCI: Add support for more than two alt_size under same bridge Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 24/49] PCI: Better support for two alt_size Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 25/49] PCI: Don't add too much optional size for hotplug bridge io Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 26/49] PCI: Move ISA ioport align out of calculate_iosize Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 27/49] PCI: Unifiy calculate_size for io port and mmio Yinghai Lu
2015-07-14 22:46 ` [PATCH v2 28/49] PCI: Allow optional only io resource must size to be 0 Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 29/49] PCI: Unify skip_ioresource_align() Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 30/49] PCI: Kill macro checking for bus io port sizing Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 31/49] resources: Split out __allocate_resource() Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 32/49] resources: Make allocate_resource return just fit resource Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 33/49] PCI: Check pref compatible bit for mem64 resource of pcie device Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 34/49] PCI: Only treat non-pef mmio64 as pref if all bridges has MEM_64 Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 35/49] PCI: Add has_mem64 for host_bridge Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 36/49] PCI: Only treat non-pef mmio64 as pref if host-bridge has_mem64 Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 37/49] PCI: Restore pref mmio allocation logic for hostbridge without mmio64 Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 38/49] sparc/PCI: Add mem64 resource parsing for root bus Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 39/49] sparc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in of parsing Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 40/49] powerpc/PCI: " Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 41/49] of/PCI: Add IORESOURCE_MEM_64 for 64-bit resource Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 42/49] PCI: Treat optional as must in first try for bridge rescan Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 43/49] PCI: Get new realloc size for bridge for last try Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 44/49] PCI: Don't release sibiling bridge resources during hotplug Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 45/49] PCI: Don't release fixed resource for realloc Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 46/49] PCI: Set resource to FIXED for lsi devices Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 47/49] PCI, x86: Add pci=assign_pref_bars to re-allocate pref bars Yinghai Lu
2015-07-14 22:47 ` [PATCH v2 48/49] PCI: Introduce resource_disabled() Yinghai Lu
2015-07-14 22:47 ` Yinghai Lu [this message]
2015-07-17 1:51 ` [PATCH v2 00/49] PCI: Resource allocation cleanup for v4.3 Wei Yang
2015-07-17 3:59 ` Yinghai Lu
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