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Message-Id: <1443678807-786-25-git-send-email-yinghai@kernel.org>
Date: Wed, 30 Sep 2015 22:52:58 -0700
From: Yinghai Lu <yinghai@...nel.org>
To: Bjorn Helgaas <bhelgaas@...gle.com>,
David Miller <davem@...emloft.net>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
Yijing Wang <wangyijing@...wei.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH v6 24/53] PCI: Add __add_to_list()
For alt_size support, we will add more entries to realloc list.
Add new __add_to_list() to take alt_size, alt_align.
And simplify add_to_list() not to take add/alt input.
Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
drivers/pci/setup-bus.c | 51 ++++++++++++++++++++++++++++++-------------------
1 file changed, 31 insertions(+), 20 deletions(-)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 2c81d76..ca23b2a 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -66,6 +66,8 @@ struct pci_dev_resource {
resource_size_t end;
resource_size_t add_size;
resource_size_t min_align;
+ resource_size_t alt_size;
+ resource_size_t alt_align;
unsigned long flags;
};
@@ -88,15 +90,16 @@ static void free_list(struct list_head *head)
* @add_size: additional size to be optionally added
* to the resource
*/
-static int add_to_list(struct list_head *head,
+static int __add_to_list(struct list_head *head,
struct pci_dev *dev, struct resource *res,
- resource_size_t add_size, resource_size_t min_align)
+ resource_size_t add_size, resource_size_t min_align,
+ resource_size_t alt_size, resource_size_t alt_align)
{
struct pci_dev_resource *tmp;
tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
if (!tmp) {
- pr_warn("add_to_list: kmalloc() failed!\n");
+ pr_warn("__add_to_list: kmalloc() failed!\n");
return -ENOMEM;
}
@@ -107,12 +110,20 @@ static int add_to_list(struct list_head *head,
tmp->flags = res->flags;
tmp->add_size = add_size;
tmp->min_align = min_align;
+ tmp->alt_size = alt_size;
+ tmp->alt_align = alt_align;
list_add(&tmp->list, head);
return 0;
}
+static int add_to_list(struct list_head *head,
+ struct pci_dev *dev, struct resource *res)
+{
+ return __add_to_list(head, dev, res, 0, 0, 0, 0);
+}
+
static void remove_from_list(struct list_head *head,
struct resource *res)
{
@@ -378,9 +389,7 @@ static void assign_requested_resources_sorted(struct list_head *head,
if (resource_size(res) &&
pci_assign_resource(dev_res->dev, idx)) {
if (fail_head)
- add_to_list(fail_head, dev_res->dev, res,
- 0 /* don't care */,
- 0 /* don't care */);
+ add_to_list(fail_head, dev_res->dev, res);
reset_resource(res);
}
}
@@ -466,7 +475,7 @@ static void __assign_resources_sorted(struct list_head *head,
/* Save original start, end, flags etc at first */
list_for_each_entry(dev_res, head, list) {
- if (add_to_list(&save_head, dev_res->dev, dev_res->res, 0, 0)) {
+ if (add_to_list(&save_head, dev_res->dev, dev_res->res)) {
free_list(&save_head);
goto requested_and_reassign;
}
@@ -1019,8 +1028,8 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
b_res->end = b_res->start + size0 - 1;
b_res->flags |= IORESOURCE_STARTALIGN;
if (size1 > size0 && realloc_head) {
- add_to_list(realloc_head, bus->self, b_res, size1-size0,
- min_align);
+ __add_to_list(realloc_head, bus->self, b_res,
+ size1 - size0, min_align, 0, 0);
dev_printk(KERN_DEBUG, &bus->self->dev, "bridge window %pR to %pR add_size %llx\n",
b_res, &bus->busn_res,
(unsigned long long)size1-size0);
@@ -1222,7 +1231,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
add_to_align_test_list(&align_test_add_list,
align, r_size);
r->end = r->start - 1;
- add_to_list(realloc_head, dev, r, r_size, 0/* don't care */);
+ __add_to_list(realloc_head, dev, r,
+ r_size, align, 0, 0);
sum_add_size += r_size;
if (align > max_add_align)
max_add_align = align;
@@ -1293,8 +1303,8 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
b_res->end = size0 + min_align - 1;
b_res->flags |= IORESOURCE_STARTALIGN;
if (size1 > size0 && realloc_head) {
- add_to_list(realloc_head, bus->self, b_res, size1 - size0,
- min_add_align);
+ __add_to_list(realloc_head, bus->self, b_res, size1 - size0,
+ min_add_align, 0, 0);
dev_printk(KERN_DEBUG, &bus->self->dev, "bridge window %pR to %pR add_size %llx add_align %llx\n",
b_res, &bus->busn_res,
(unsigned long long) (size1 - size0),
@@ -1331,8 +1341,8 @@ static void pci_bus_size_cardbus(struct pci_bus *bus,
b_res[0].flags |= IORESOURCE_IO | IORESOURCE_STARTALIGN;
if (realloc_head) {
b_res[0].end -= pci_cardbus_io_size;
- add_to_list(realloc_head, bridge, b_res, pci_cardbus_io_size,
- pci_cardbus_io_size);
+ __add_to_list(realloc_head, bridge, b_res,
+ pci_cardbus_io_size, pci_cardbus_io_size, 0, 0);
}
handle_b_res_1:
@@ -1343,8 +1353,8 @@ handle_b_res_1:
b_res[1].flags |= IORESOURCE_IO | IORESOURCE_STARTALIGN;
if (realloc_head) {
b_res[1].end -= pci_cardbus_io_size;
- add_to_list(realloc_head, bridge, b_res+1, pci_cardbus_io_size,
- pci_cardbus_io_size);
+ __add_to_list(realloc_head, bridge, b_res + 1,
+ pci_cardbus_io_size, pci_cardbus_io_size, 0, 0);
}
handle_b_res_2:
@@ -1381,8 +1391,9 @@ handle_b_res_2:
IORESOURCE_STARTALIGN;
if (realloc_head) {
b_res[2].end -= pci_cardbus_mem_size;
- add_to_list(realloc_head, bridge, b_res+2,
- pci_cardbus_mem_size, pci_cardbus_mem_size);
+ __add_to_list(realloc_head, bridge, b_res + 2,
+ pci_cardbus_mem_size, pci_cardbus_mem_size,
+ 0, 0);
}
/* reduce that to half */
@@ -1397,8 +1408,8 @@ handle_b_res_3:
b_res[3].flags |= IORESOURCE_MEM | IORESOURCE_STARTALIGN;
if (realloc_head) {
b_res[3].end -= b_res_3_size;
- add_to_list(realloc_head, bridge, b_res+3, b_res_3_size,
- pci_cardbus_mem_size);
+ __add_to_list(realloc_head, bridge, b_res + 3,
+ b_res_3_size, pci_cardbus_mem_size, 0, 0);
}
handle_done:
--
1.8.4.5
--
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