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>,
Khalid Aziz <khalid.aziz@oracle.com>
Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH v10 47/59] PCI: Move ISA io port align out of calculate_iosize()
Date: Wed, 24 Feb 2016 18:12:38 -0800 [thread overview]
Message-ID: <1456366370-28995-48-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1456366370-28995-1-git-send-email-yinghai@kernel.org>
We need to move ISA io port align out of calculate_iosize(),
so we could unify calculate_iosize and calculate_memsize later.
That extra aligning or offset is to work around ISA devices:
When one bridge have several children devices, and every device
has several io port resources and resource size < 0x400.
We need to check size, and add extra size to make sure bit8/9
to be zero.
Also need to apply same checking for optional size path.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
drivers/pci/setup-bus.c | 39 +++++++++++++++++++++++++++------------
1 file changed, 27 insertions(+), 12 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 15a52f3..691d41e 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -1114,11 +1114,6 @@ static resource_size_t calculate_iosize(resource_size_t size,
size = min_size;
if (old_size == 1)
old_size = 0;
- /* To be fixed in 2.5: we should have sort of HAVE_ISA
- flag in the struct pci_bus. */
-#if defined(CONFIG_ISA) || defined(CONFIG_EISA)
- size = (size & 0xff) + ((size & ~0xffUL) << 2);
-#endif
size = ALIGN(size + size1, align);
if (size < old_size)
size = old_size;
@@ -1172,6 +1167,18 @@ static resource_size_t window_alignment(struct pci_bus *bus,
return max(align, arch_align);
}
+static resource_size_t size_aligned_for_isa(resource_size_t size)
+{
+ /*
+ * To be fixed in 2.5: we should have sort of HAVE_ISA
+ * flag in the struct pci_bus.
+ */
+#if defined(CONFIG_ISA) || defined(CONFIG_EISA)
+ size = (size & 0xff) + ((size & ~0xffUL) << 2);
+#endif
+ return size;
+}
+
/**
* pbus_size_io() - size the io window of a given bus
*
@@ -1189,11 +1196,10 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
{
struct pci_dev *dev;
resource_size_t min_sum_size = 0;
- resource_size_t sum_add_size;
struct resource *b_res = find_free_bus_resource(bus, IORESOURCE_IO,
IORESOURCE_IO);
resource_size_t size = 0, size0 = 0, size1 = 0;
- resource_size_t children_add_size = 0;
+ resource_size_t sum_add_size = 0, sum_add_size1 = 0;
resource_size_t min_align, align;
if (!b_res)
@@ -1210,7 +1216,7 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];
- unsigned long r_size;
+ unsigned long r_size, r_add_size;
if (r->parent || !(r->flags & IORESOURCE_IO))
continue;
@@ -1226,18 +1232,27 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
if (align > min_align)
min_align = align;
- if (realloc_head)
- children_add_size += get_res_add_size(realloc_head, r);
+ if (realloc_head) {
+ r_add_size = get_res_add_size(realloc_head, r);
+ r_add_size += r_size;
+ if (r_add_size < 0x400)
+ /* Might be re-aligned for ISA */
+ sum_add_size += r_add_size;
+ else
+ sum_add_size1 += r_add_size;
+ }
}
}
+ size = size_aligned_for_isa(size);
size0 = calculate_iosize(size, min_size, size1,
resource_size(b_res), min_align);
- sum_add_size = children_add_size + size + size1;
+ sum_add_size = size_aligned_for_isa(sum_add_size);
+ sum_add_size += sum_add_size1;
if (sum_add_size < min_sum_size)
sum_add_size = min_sum_size;
size1 = !realloc_head ? size0 :
- calculate_iosize(size, min_size, sum_add_size - size,
+ calculate_iosize(sum_add_size, min_size, 0,
resource_size(b_res), min_align);
if (!size0 && !size1) {
if (b_res->start || b_res->end)
--
1.8.4.5
next prev parent reply other threads:[~2016-02-25 2:14 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 2:11 [PATCH v10 00/59] PCI: Resource allocation cleanup for v4.6 Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 01/59] PCI: Add pci_find_root_bus_resource() Yinghai Lu
2016-03-10 3:54 ` Bjorn Helgaas
2016-03-11 21:21 ` Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 02/59] sparc/PCI: Use correct bus address to resource offset Yinghai Lu
2016-03-10 18:24 ` Bjorn Helgaas
2016-03-10 19:47 ` David Miller
2016-03-12 8:22 ` Yinghai Lu
2016-03-12 11:26 ` Bjorn Helgaas
2016-03-19 6:01 ` Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 03/59] sparc/PCI: Reserve legacy mmio after PCI mmio Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 04/59] sparc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 05/59] sparc/PCI: Keep resource idx order with bridge register number Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 06/59] PCI: Kill wrong quirk about M7101 Yinghai Lu
2016-03-10 17:40 ` Bjorn Helgaas
2016-03-11 22:08 ` Yinghai Lu
2016-03-12 1:06 ` Linus Torvalds
2016-03-12 7:52 ` Meelis Roos
2016-03-12 8:26 ` Yinghai Lu
2016-03-12 8:39 ` Meelis Roos
2016-04-25 20:57 ` Bjorn Helgaas
2016-02-25 2:11 ` [PATCH v10 07/59] PCI: Ignore BAR for ALi M1533 PCI-ISA bridge Yinghai Lu
2016-03-10 17:54 ` Bjorn Helgaas
2016-03-11 22:21 ` Yinghai Lu
2016-02-25 2:11 ` [PATCH v10 08/59] powerpc/PCI: Keep resource idx order with bridge register number Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 09/59] powerpc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 10/59] OF/PCI: Add IORESOURCE_MEM_64 for 64-bit resource Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 11/59] PCI: Check pref compatible bit for mem64 resource of PCIe device Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 12/59] PCI: Only treat non-pref mmio64 as pref if all bridges have MEM_64 Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 13/59] PCI: Add has_mem64 for struct host_bridge Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 14/59] PCI: Only treat non-pref mmio64 as pref if host bridge has mmio64 Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 15/59] PCI: Restore pref MMIO allocation logic for host bridge without mmio64 Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 16/59] PCI: Don't release fixed resource for realloc Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 17/59] PCI: Claim fixed resource during remove/rescan path Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 18/59] PCI: Set resource to FIXED for LSI devices Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 19/59] PCI: Separate realloc list checking after allocation Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 20/59] PCI: Treat optional as required in first try for bridge rescan Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 21/59] PCI: Get new realloc size for bridge for last try Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 22/59] PCI: Don't release sibling bridge resources during hotplug Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 23/59] PCI: Cleanup res_to_dev_res() printout Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 24/59] PCI: Reuse res_to_dev_res() in reassign_resources_sorted() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 25/59] PCI: Use correct align for optional only resources during sorting Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 26/59] PCI: Optimize bus min_align/size calculation during sizing Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 27/59] PCI: Optimize bus align/size calculation for optional " Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 28/59] PCI: Don't add too much optional size for hotplug bridge MMIO Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 29/59] PCI: Reorder resources list for required/optional resources Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 30/59] PCI: Remove duplicated code for resource sorting Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 31/59] PCI: Rename pdev_sort_resources() to pdev_assign_resources_prepare() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 32/59] PCI: Treat ROM resource as optional during realloc Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 33/59] PCI: Add debug printout during releasing partial assigned resources Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 34/59] PCI: Simplify res reference using in __assign_resources_sorted() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 35/59] PCI: Add __add_to_list() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 36/59] PCI: Cache window alignment value during bus sizing Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 37/59] PCI: Check if resource is allocated before trying to assign one Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 38/59] PCI: Separate out save_resources()/restore_resources() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 39/59] PCI: Move comment to pci_need_to_release() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 40/59] PCI: Separate required+optional assigning to another function Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 41/59] PCI: Skip required+optional if there is no optional Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 42/59] PCI: Move saved required resource list out of required+optional assigning Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 43/59] PCI: Add alt_size ressource allocation support Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 44/59] PCI: Add support for more than two alt_size entries under same bridge Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 45/59] PCI: Fix size calculation with old_size on rescan path Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 46/59] PCI: Don't add too much optional size for hotplug bridge io Yinghai Lu
2016-02-25 2:12 ` Yinghai Lu [this message]
2016-02-25 2:12 ` [PATCH v10 48/59] PCI: Don't add too much io port for hotplug bridge with old size Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 49/59] PCI: Unify calculate_size() for io port and MMIO Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 50/59] PCI: Allow bridge optional only io port resource required size to be 0 Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 51/59] PCI: Unify skip_ioresource_align() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 52/59] PCI: Kill macro checking for bus io port sizing Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 53/59] resources: Make allocate_resource() return best fit resource Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 54/59] PCI, x86: Allocate from high in available window for MMIO Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 55/59] PCI: Add debug print out for min_align and alt_size Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 56/59] PCI, x86: Add pci=assign_pref_bars to reallocate pref BARs Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 57/59] PCI: Introduce resource_disabled() Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 58/59] PCI: Don't set flags to 0 when assign resource fail Yinghai Lu
2016-02-25 2:12 ` [PATCH v10 59/59] PCI: Only try to assign io port only for root bus that support it Yinghai Lu
2016-03-10 18:30 ` [PATCH v10 00/59] PCI: Resource allocation cleanup for v4.6 Bjorn Helgaas
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