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authorBjorn Helgaas <bhelgaas@google.com>2019-11-28 08:54:36 -0600
committerBjorn Helgaas <bhelgaas@google.com>2019-11-28 08:54:36 -0600
commit774800cb099f8ee2f0f5c55ddb1809802d7c7cf8 (patch)
tree6782fb83679d64ddccc89506262e6c5258497cbf
parent7cfe16393c3c9fed45545b234b852e1154c7cc5b (diff)
parent73884a7082f466ce6686bb8dd7e6571dd42313b4 (diff)
downloadlinux-774800cb099f8ee2f0f5c55ddb1809802d7c7cf8.tar.bz2
Merge branch 'pci/resource'
- Protect pci_reassign_bridge_resources() against concurrent addition/removal (Benjamin Herrenschmidt) - Fix bridge dma_ranges resource list cleanup (Rob Herring) - Add PCI_STD_NUM_BARS for the number of standard BARs (Denis Efremov) - Add "pci=hpmmiosize" and "pci=hpmmioprefsize" parameters to control the MMIO and prefetchable MMIO window sizes of hotplug bridges independently (Nicholas Johnson) - Fix MMIO/MMIO_PREF window assignment that assigned more space than desired (Nicholas Johnson) - Only enforce bus numbers from bridge EA if the bridge has EA devices downstream (Subbaraya Sundeep) * pci/resource: PCI: Do not use bus number zero from EA capability PCI: Avoid double hpmemsize MMIO window assignment PCI: Add "pci=hpmmiosize" and "pci=hpmmioprefsize" parameters PCI: Add PCI_STD_NUM_BARS for the number of standard BARs PCI: Fix missing bridge dma_ranges resource list cleanup PCI: Protect pci_reassign_bridge_resources() against concurrent addition/removal
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt9
-rw-r--r--arch/alpha/kernel/pci-sysfs.c8
-rw-r--r--arch/s390/include/asm/pci.h5
-rw-r--r--arch/s390/include/asm/pci_clp.h6
-rw-r--r--arch/s390/pci/pci.c16
-rw-r--r--arch/s390/pci/pci_clp.c6
-rw-r--r--arch/x86/pci/common.c2
-rw-r--r--arch/x86/pci/intel_mid_pci.c2
-rw-r--r--drivers/ata/pata_atp867x.c2
-rw-r--r--drivers/ata/sata_nv.c2
-rw-r--r--drivers/memstick/host/jmb38x_ms.c2
-rw-r--r--drivers/misc/pci_endpoint_test.c8
-rw-r--r--drivers/net/ethernet/intel/e1000/e1000.h1
-rw-r--r--drivers/net/ethernet/intel/e1000/e1000_main.c2
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb.h1
-rw-r--r--drivers/net/ethernet/intel/ixgb/ixgb_main.c2
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c4
-rw-r--r--drivers/net/ethernet/synopsys/dwc-xlgmac-pci.c2
-rw-r--r--drivers/pci/controller/dwc/pci-dra7xx.c2
-rw-r--r--drivers/pci/controller/dwc/pci-layerscape-ep.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-artpec6.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-plat.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-designware.h2
-rw-r--r--drivers/pci/controller/pci-hyperv.c10
-rw-r--r--drivers/pci/endpoint/functions/pci-epf-test.c10
-rw-r--r--drivers/pci/pci-sysfs.c4
-rw-r--r--drivers/pci/pci.c33
-rw-r--r--drivers/pci/pci.h3
-rw-r--r--drivers/pci/probe.c17
-rw-r--r--drivers/pci/proc.c4
-rw-r--r--drivers/pci/quirks.c4
-rw-r--r--drivers/pci/setup-bus.c70
-rw-r--r--drivers/rapidio/devices/tsi721.c2
-rw-r--r--drivers/scsi/pm8001/pm8001_hwi.c2
-rw-r--r--drivers/scsi/pm8001/pm8001_init.c2
-rw-r--r--drivers/staging/gasket/gasket_constants.h3
-rw-r--r--drivers/staging/gasket/gasket_core.c12
-rw-r--r--drivers/staging/gasket/gasket_core.h4
-rw-r--r--drivers/tty/serial/8250/8250_pci.c8
-rw-r--r--drivers/usb/core/hcd-pci.c2
-rw-r--r--drivers/usb/host/pci-quirks.c2
-rw-r--r--drivers/vfio/pci/vfio_pci.c11
-rw-r--r--drivers/vfio/pci/vfio_pci_config.c32
-rw-r--r--drivers/vfio/pci/vfio_pci_private.h4
-rw-r--r--drivers/video/fbdev/core/fbmem.c4
-rw-r--r--drivers/video/fbdev/efifb.c2
-rw-r--r--include/linux/pci-epc.h2
-rw-r--r--include/linux/pci.h2
-rw-r--r--include/uapi/linux/pci_regs.h1
-rw-r--r--lib/devres.c2
50 files changed, 195 insertions, 147 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 794bd84c8188..c74027c55f47 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3492,8 +3492,15 @@
hpiosize=nn[KMG] The fixed amount of bus space which is
reserved for hotplug bridge's IO window.
Default size is 256 bytes.
+ hpmmiosize=nn[KMG] The fixed amount of bus space which is
+ reserved for hotplug bridge's MMIO window.
+ Default size is 2 megabytes.
+ hpmmioprefsize=nn[KMG] The fixed amount of bus space which is
+ reserved for hotplug bridge's MMIO_PREF window.
+ Default size is 2 megabytes.
hpmemsize=nn[KMG] The fixed amount of bus space which is
- reserved for hotplug bridge's memory window.
+ reserved for hotplug bridge's MMIO and
+ MMIO_PREF window.
Default size is 2 megabytes.
hpbussize=nn The minimum amount of additional bus numbers
reserved for buses below a hotplug bridge.
diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c
index f94c732fedeb..0021580d79ad 100644
--- a/arch/alpha/kernel/pci-sysfs.c
+++ b/arch/alpha/kernel/pci-sysfs.c
@@ -71,10 +71,10 @@ static int pci_mmap_resource(struct kobject *kobj,
struct pci_bus_region bar;
int i;
- for (i = 0; i < PCI_ROM_RESOURCE; i++)
+ for (i = 0; i < PCI_STD_NUM_BARS; i++)
if (res == &pdev->resource[i])
break;
- if (i >= PCI_ROM_RESOURCE)
+ if (i >= PCI_STD_NUM_BARS)
return -ENODEV;
if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start))
@@ -115,7 +115,7 @@ void pci_remove_resource_files(struct pci_dev *pdev)
{
int i;
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
struct bin_attribute *res_attr;
res_attr = pdev->res_attr[i];
@@ -232,7 +232,7 @@ int pci_create_resource_files(struct pci_dev *pdev)
int retval;
/* Expose the PCI resources from this device as files */
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
/* skip empty resources */
if (!pci_resource_len(pdev, i))
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index a2399eff84ca..3a06c264ea53 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -2,9 +2,6 @@
#ifndef __ASM_S390_PCI_H
#define __ASM_S390_PCI_H
-/* must be set before including pci_clp.h */
-#define PCI_BAR_COUNT 6
-
#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/iommu.h>
@@ -138,7 +135,7 @@ struct zpci_dev {
char res_name[16];
bool mio_capable;
- struct zpci_bar_struct bars[PCI_BAR_COUNT];
+ struct zpci_bar_struct bars[PCI_STD_NUM_BARS];
u64 start_dma; /* Start of available DMA addresses */
u64 end_dma; /* End of available DMA addresses */
diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
index 50359172cc48..bd2cb4ea7d93 100644
--- a/arch/s390/include/asm/pci_clp.h
+++ b/arch/s390/include/asm/pci_clp.h
@@ -77,7 +77,7 @@ struct mio_info {
struct {
u64 wb;
u64 wt;
- } addr[PCI_BAR_COUNT];
+ } addr[PCI_STD_NUM_BARS];
u32 reserved[6];
} __packed;
@@ -98,9 +98,9 @@ struct clp_rsp_query_pci {
u16 util_str_avail : 1; /* utility string available? */
u16 pfgid : 8; /* pci function group id */
u32 fid; /* pci function id */
- u8 bar_size[PCI_BAR_COUNT];
+ u8 bar_size[PCI_STD_NUM_BARS];
u16 pchid;
- __le32 bar[PCI_BAR_COUNT];
+ __le32 bar[PCI_STD_NUM_BARS];
u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */
u32 : 16;
u8 fmb_len;
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index c7fea9bea8cb..7b4c2acf05a8 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -43,7 +43,7 @@ static DECLARE_BITMAP(zpci_domain, ZPCI_NR_DEVICES);
static DEFINE_SPINLOCK(zpci_domain_lock);
#define ZPCI_IOMAP_ENTRIES \
- min(((unsigned long) ZPCI_NR_DEVICES * PCI_BAR_COUNT / 2), \
+ min(((unsigned long) ZPCI_NR_DEVICES * PCI_STD_NUM_BARS / 2), \
ZPCI_IOMAP_MAX_ENTRIES)
static DEFINE_SPINLOCK(zpci_iomap_lock);
@@ -294,7 +294,7 @@ static void __iomem *pci_iomap_range_mio(struct pci_dev *pdev, int bar,
void __iomem *pci_iomap_range(struct pci_dev *pdev, int bar,
unsigned long offset, unsigned long max)
{
- if (!pci_resource_len(pdev, bar) || bar >= PCI_BAR_COUNT)
+ if (bar >= PCI_STD_NUM_BARS || !pci_resource_len(pdev, bar))
return NULL;
if (static_branch_likely(&have_mio))
@@ -324,7 +324,7 @@ static void __iomem *pci_iomap_wc_range_mio(struct pci_dev *pdev, int bar,
void __iomem *pci_iomap_wc_range(struct pci_dev *pdev, int bar,
unsigned long offset, unsigned long max)
{
- if (!pci_resource_len(pdev, bar) || bar >= PCI_BAR_COUNT)
+ if (bar >= PCI_STD_NUM_BARS || !pci_resource_len(pdev, bar))
return NULL;
if (static_branch_likely(&have_mio))
@@ -416,7 +416,7 @@ static void zpci_map_resources(struct pci_dev *pdev)
resource_size_t len;
int i;
- for (i = 0; i < PCI_BAR_COUNT; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
len = pci_resource_len(pdev, i);
if (!len)
continue;
@@ -451,7 +451,7 @@ static void zpci_unmap_resources(struct pci_dev *pdev)
if (zpci_use_mio(zdev))
return;
- for (i = 0; i < PCI_BAR_COUNT; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
len = pci_resource_len(pdev, i);
if (!len)
continue;
@@ -514,7 +514,7 @@ static int zpci_setup_bus_resources(struct zpci_dev *zdev,
snprintf(zdev->res_name, sizeof(zdev->res_name),
"PCI Bus %04x:%02x", zdev->domain, ZPCI_BUS_NR);
- for (i = 0; i < PCI_BAR_COUNT; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (!zdev->bars[i].size)
continue;
entry = zpci_alloc_iomap(zdev);
@@ -551,7 +551,7 @@ static void zpci_cleanup_bus_resources(struct zpci_dev *zdev)
{
int i;
- for (i = 0; i < PCI_BAR_COUNT; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (!zdev->bars[i].size || !zdev->bars[i].res)
continue;
@@ -573,7 +573,7 @@ int pcibios_add_device(struct pci_dev *pdev)
pdev->dev.dma_ops = &s390_pci_dma_ops;
zpci_map_resources(pdev);
- for (i = 0; i < PCI_BAR_COUNT; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
res = &pdev->resource[i];
if (res->parent || !res->flags)
continue;
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index e585a62d6530..4c613e569fe0 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -145,7 +145,7 @@ static int clp_store_query_pci_fn(struct zpci_dev *zdev,
{
int i;
- for (i = 0; i < PCI_BAR_COUNT; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
zdev->bars[i].val = le32_to_cpu(response->bar[i]);
zdev->bars[i].size = response->bar_size[i];
}
@@ -164,8 +164,8 @@ static int clp_store_query_pci_fn(struct zpci_dev *zdev,
sizeof(zdev->util_str));
}
zdev->mio_capable = response->mio_addr_avail;
- for (i = 0; i < PCI_BAR_COUNT; i++) {
- if (!(response->mio.valid & (1 << (PCI_BAR_COUNT - i - 1))))
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
+ if (!(response->mio.valid & (1 << (PCI_STD_NUM_BARS - i - 1))))
continue;
zdev->bars[i].mio_wb = (void __iomem *) response->mio.addr[i].wb;
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 9acab6ac28f5..1e59df041456 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -135,7 +135,7 @@ static void pcibios_fixup_device_resources(struct pci_dev *dev)
* resource so the kernel doesn't attempt to assign
* it later on in pci_assign_unassigned_resources
*/
- for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
bar_r = &dev->resource[bar];
if (bar_r->start == 0 && bar_r->end != 0) {
bar_r->flags = 0;
diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c
index 43867bc85368..00c62115f39c 100644
--- a/arch/x86/pci/intel_mid_pci.c
+++ b/arch/x86/pci/intel_mid_pci.c
@@ -382,7 +382,7 @@ static void pci_fixed_bar_fixup(struct pci_dev *dev)
PCI_DEVFN(2, 2) == dev->devfn)
return;
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
pci_read_config_dword(dev, offset + 8 + (i * 4), &size);
dev->resource[i].end = dev->resource[i].start + size - 1;
dev->resource[i].flags |= IORESOURCE_PCI_FIXED;
diff --git a/drivers/ata/pata_atp867x.c b/drivers/ata/pata_atp867x.c
index cfd0cf2cbca6..e01a3a6e4d46 100644
--- a/drivers/ata/pata_atp867x.c
+++ b/drivers/ata/pata_atp867x.c
@@ -422,7 +422,7 @@ static int atp867x_ata_pci_sff_init_host(struct ata_host *host)
#ifdef ATP867X_DEBUG
atp867x_check_res(pdev);
- for (i = 0; i < PCI_ROM_RESOURCE; i++)
+ for (i = 0; i < PCI_STD_NUM_BARS; i++)
printk(KERN_DEBUG "ATP867X: iomap[%d]=0x%llx\n", i,
(unsigned long long)(host->iomap[i]));
#endif
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index 56946012d113..6f261fbae8c2 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -2325,7 +2325,7 @@ static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
// Make sure this is a SATA controller by counting the number of bars
// (NVIDIA SATA controllers will always have six bars). Otherwise,
// it's an IDE controller and we ignore it.
- for (bar = 0; bar < 6; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
if (pci_resource_start(pdev, bar) == 0)
return -ENODEV;
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index 64fff6abe60e..719f54c58920 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -848,7 +848,7 @@ static int jmb38x_ms_count_slots(struct pci_dev *pdev)
{
int cnt, rc = 0;
- for (cnt = 0; cnt < PCI_ROM_RESOURCE; ++cnt) {
+ for (cnt = 0; cnt < PCI_STD_NUM_BARS; ++cnt) {
if (!(IORESOURCE_MEM & pci_resource_flags(pdev, cnt)))
break;
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 6e208a060a58..a5e317073d95 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -94,7 +94,7 @@ enum pci_barno {
struct pci_endpoint_test {
struct pci_dev *pdev;
void __iomem *base;
- void __iomem *bar[6];
+ void __iomem *bar[PCI_STD_NUM_BARS];
struct completion irq_raised;
int last_irq;
int num_irqs;
@@ -687,7 +687,7 @@ static int pci_endpoint_test_probe(struct pci_dev *pdev,
if (!pci_endpoint_test_request_irq(test))
goto err_disable_irq;
- for (bar = BAR_0; bar <= BAR_5; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM) {
base = pci_ioremap_bar(pdev, bar);
if (!base) {
@@ -740,7 +740,7 @@ err_ida_remove:
ida_simple_remove(&pci_endpoint_test_ida, id);
err_iounmap:
- for (bar = BAR_0; bar <= BAR_5; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
if (test->bar[bar])
pci_iounmap(pdev, test->bar[bar]);
}
@@ -771,7 +771,7 @@ static void pci_endpoint_test_remove(struct pci_dev *pdev)
misc_deregister(&test->miscdev);
kfree(misc_device->name);
ida_simple_remove(&pci_endpoint_test_ida, id);
- for (bar = BAR_0; bar <= BAR_5; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
if (test->bar[bar])
pci_iounmap(pdev, test->bar[bar]);
}
diff --git a/drivers/net/ethernet/intel/e1000/e1000.h b/drivers/net/ethernet/intel/e1000/e1000.h
index c40729b2c184..7fad2f24dcad 100644
--- a/drivers/net/ethernet/intel/e1000/e1000.h
+++ b/drivers/net/ethernet/intel/e1000/e1000.h
@@ -45,7 +45,6 @@
#define BAR_0 0
#define BAR_1 1
-#define BAR_5 5
#define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index 86493fea56e4..78db33694494 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -977,7 +977,7 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_ioremap;
if (adapter->need_ioport) {
- for (i = BAR_1; i <= BAR_5; i++) {
+ for (i = BAR_1; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_len(pdev, i) == 0)
continue;
if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb.h b/drivers/net/ethernet/intel/ixgb/ixgb.h
index e85271b68410..681d44cc9784 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb.h
+++ b/drivers/net/ethernet/intel/ixgb/ixgb.h
@@ -42,7 +42,6 @@
#define BAR_0 0
#define BAR_1 1
-#define BAR_5 5
struct ixgb_adapter;
#include "ixgb_hw.h"
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index 0940a0da16f2..3d8c051dd327 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -412,7 +412,7 @@ ixgb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto err_ioremap;
}
- for (i = BAR_1; i <= BAR_5; i++) {
+ for (i = BAR_1; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_len(pdev, i) == 0)
continue;
if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 292045f4581f..8237dbc3e991 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -489,7 +489,7 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
}
/* Get the base address of device */
- for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_len(pdev, i) == 0)
continue;
ret = pcim_iomap_regions(pdev, BIT(i), pci_name(pdev));
@@ -532,7 +532,7 @@ static void stmmac_pci_remove(struct pci_dev *pdev)
if (priv->plat->stmmac_clk)
clk_unregister_fixed_rate(priv->plat->stmmac_clk);
- for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_len(pdev, i) == 0)
continue;
pcim_iounmap_regions(pdev, BIT(i));
diff --git a/drivers/net/ethernet/synopsys/dwc-xlgmac-pci.c b/drivers/net/ethernet/synopsys/dwc-xlgmac-pci.c
index 386bafe74c3f..fa8604d7b797 100644
--- a/drivers/net/ethernet/synopsys/dwc-xlgmac-pci.c
+++ b/drivers/net/ethernet/synopsys/dwc-xlgmac-pci.c
@@ -34,7 +34,7 @@ static int xlgmac_probe(struct pci_dev *pcidev, const struct pci_device_id *id)
return ret;
}
- for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_len(pcidev, i) == 0)
continue;
ret = pcim_iomap_regions(pcidev, BIT(i), XLGMAC_DRV_NAME);
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 4234ddb4722f..b20651cea09f 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -353,7 +353,7 @@ static void dra7xx_pcie_ep_init(struct dw_pcie_ep *ep)
struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pci);
enum pci_barno bar;
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
dra7xx_pcie_enable_wrapper_interrupts(dra7xx);
diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index ca9aa4501e7e..0d151cead1b7 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -58,7 +58,7 @@ static void ls_pcie_ep_init(struct dw_pcie_ep *ep)
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
enum pci_barno bar;
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
}
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index d00252bd8fae..9e2482bd7b6d 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -422,7 +422,7 @@ static void artpec6_pcie_ep_init(struct dw_pcie_ep *ep)
artpec6_pcie_wait_for_phy(artpec6_pcie);
artpec6_pcie_set_nfts(artpec6_pcie);
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
}
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index b58fdcbc664b..73646b677aff 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -70,7 +70,7 @@ static void dw_plat_pcie_ep_init(struct dw_pcie_ep *ep)
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
enum pci_barno bar;
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
}
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 5a18e94e52c8..5accdd6bc388 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -214,7 +214,7 @@ struct dw_pcie_ep {
phys_addr_t phys_base;
size_t addr_size;
size_t page_size;
- u8 bar_to_atu[6];
+ u8 bar_to_atu[PCI_STD_NUM_BARS];
phys_addr_t *outbound_addr;
unsigned long *ib_window_map;
unsigned long *ob_window_map;
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index f1f300218fab..ad40e848d564 100644
--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -307,7 +307,7 @@ struct pci_bus_relations {
struct pci_q_res_req_response {
struct vmpacket_descriptor hdr;
s32 status; /* negative values are failures */
- u32 probed_bar[6];
+ u32 probed_bar[PCI_STD_NUM_BARS];
} __packed;
struct pci_set_power {
@@ -539,7 +539,7 @@ struct hv_pci_dev {
* What would be observed if one wrote 0xFFFFFFFF to a BAR and then
* read it back, for each of the BAR offsets within config space.
*/
- u32 probed_bar[6];
+ u32 probed_bar[PCI_STD_NUM_BARS];
};
struct hv_pci_compl {
@@ -1610,7 +1610,7 @@ static void survey_child_resources(struct hv_pcibus_device *hbus)
* so it's sufficient to just add them up without tracking alignment.
*/
list_for_each_entry(hpdev, &hbus->children, list_entry) {
- for (i = 0; i < 6; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (hpdev->probed_bar[i] & PCI_BASE_ADDRESS_SPACE_IO)
dev_err(&hbus->hdev->device,
"There's an I/O BAR in this list!\n");
@@ -1684,7 +1684,7 @@ static void prepopulate_bars(struct hv_pcibus_device *hbus)
/* Pick addresses for the BARs. */
do {
list_for_each_entry(hpdev, &hbus->children, list_entry) {
- for (i = 0; i < 6; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
bar_val = hpdev->probed_bar[i];
if (bar_val == 0)
continue;
@@ -1841,7 +1841,7 @@ static void q_resource_requirements(void *context, struct pci_response *resp,
"query resource requirements failed: %x\n",
resp->status);
} else {
- for (i = 0; i < 6; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
completion->hpdev->probed_bar[i] =
q_res_req->probed_bar[i];
}
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 1cfe3687a211..5d74f81ddfe4 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -44,7 +44,7 @@
static struct workqueue_struct *kpcitest_workqueue;
struct pci_epf_test {
- void *reg[6];
+ void *reg[PCI_STD_NUM_BARS];
struct pci_epf *epf;
enum pci_barno test_reg_bar;
struct delayed_work cmd_handler;
@@ -377,7 +377,7 @@ static void pci_epf_test_unbind(struct pci_epf *epf)
cancel_delayed_work(&epf_test->cmd_handler);
pci_epc_stop(epc);
- for (bar = BAR_0; bar <= BAR_5; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
epf_bar = &epf->bar[bar];
if (epf_test->reg[bar]) {
@@ -400,7 +400,7 @@ static int pci_epf_test_set_bar(struct pci_epf *epf)
epc_features = epf_test->epc_features;
- for (bar = BAR_0; bar <= BAR_5; bar += add) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar += add) {
epf_bar = &epf->bar[bar];
/*
* pci_epc_set_bar() sets PCI_BASE_ADDRESS_MEM_TYPE_64
@@ -450,7 +450,7 @@ static int pci_epf_test_alloc_space(struct pci_epf *epf)
}
epf_test->reg[test_reg_bar] = base;
- for (bar = BAR_0; bar <= BAR_5; bar += add) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar += add) {
epf_bar = &epf->bar[bar];
add = (epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ? 2 : 1;
@@ -478,7 +478,7 @@ static void pci_epf_configure_bar(struct pci_epf *epf,
bool bar_fixed_64bit;
int i;
- for (i = BAR_0; i <= BAR_5; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
epf_bar = &epf->bar[i];
bar_fixed_64bit = !!(epc_features->bar_fixed_64bit & (1 << i));
if (bar_fixed_64bit)
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 9396c2286f5b..13f766db0684 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1122,7 +1122,7 @@ static void pci_remove_resource_files(struct pci_dev *pdev)
{
int i;
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
struct bin_attribute *res_attr;
res_attr = pdev->res_attr[i];
@@ -1193,7 +1193,7 @@ static int pci_create_resource_files(struct pci_dev *pdev)
int retval;
/* Expose the PCI resources from this device as files */
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
/* skip empty resources */
if (!pci_resource_len(pdev, i))
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 61df2e04176d..1ffe7364bb7f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -86,10 +86,17 @@ unsigned long pci_cardbus_io_size = DEFAULT_CARDBUS_IO_SIZE;
unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE;
#define DEFAULT_HOTPLUG_IO_SIZE (256)
-#define DEFAULT_HOTPLUG_MEM_SIZE (2*1024*1024)
-/* pci=hpmemsize=nnM,hpiosize=nn can override this */
+#define DEFAULT_HOTPLUG_MMIO_SIZE (2*1024*1024)
+#define DEFAULT_HOTPLUG_MMIO_PREF_SIZE (2*1024*1024)
+/* hpiosize=nn can override this */
unsigned long pci_hotplug_io_size = DEFAULT_HOTPLUG_IO_SIZE;
-unsigned long pci_hotplug_mem_size = DEFAULT_HOTPLUG_MEM_SIZE;
+/*
+ * pci=hpmmiosize=nnM overrides non-prefetchable MMIO size,
+ * pci=hpmmioprefsize=nnM overrides prefetchable MMIO size;
+ * pci=hpmemsize=nnM overrides both
+ */
+unsigned long pci_hotplug_mmio_size = DEFAULT_HOTPLUG_MMIO_SIZE;
+unsigned long pci_hotplug_mmio_pref_size = DEFAULT_HOTPLUG_MMIO_PREF_SIZE;
#define DEFAULT_HOTPLUG_BUS_SIZE 1
unsigned long pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE;
@@ -675,7 +682,7 @@ struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res)
{
int i;
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
struct resource *r = &dev->resource[i];
if (r->start && resource_contains(r, res))
@@ -3788,7 +3795,7 @@ void pci_release_selected_regions(struct pci_dev *pdev, int bars)
{
int i;
- for (i = 0; i < 6; i++)
+ for (i = 0; i < PCI_STD_NUM_BARS; i++)
if (bars & (1 << i))
pci_release_region(pdev, i);
}
@@ -3799,7 +3806,7 @@ static int __pci_request_selected_regions(struct pci_dev *pdev, int bars,
{
int i;
- for (i = 0; i < 6; i++)
+ for (i = 0; i < PCI_STD_NUM_BARS; i++)
if (bars & (1 << i))
if (__pci_request_region(pdev, i, res_name, excl))
goto err_out;
@@ -3847,7 +3854,7 @@ EXPORT_SYMBOL(pci_request_selected_regions_exclusive);
void pci_release_regions(struct pci_dev *pdev)
{
- pci_release_selected_regions(pdev, (1 << 6) - 1);
+ pci_release_selected_regions(pdev, (1 << PCI_STD_NUM_BARS) - 1);
}
EXPORT_SYMBOL(pci_release_regions);
@@ -3866,7 +3873,8 @@ EXPORT_SYMBOL(pci_release_regions);
*/
int pci_request_regions(struct pci_dev *pdev, const char *res_name)
{
- return pci_request_selected_regions(pdev, ((1 << 6) - 1), res_name);
+ return pci_request_selected_regions(pdev,
+ ((1 << PCI_STD_NUM_BARS) - 1), res_name);
}
EXPORT_SYMBOL(pci_request_regions);
@@ -3888,7 +3896,7 @@ EXPORT_SYMBOL(pci_request_regions);
int pci_request_regions_exclusive(struct pci_dev *pdev, const char *res_name)
{
return pci_request_selected_regions_exclusive(pdev,
- ((1 << 6) - 1), res_name);
+ ((1 << PCI_STD_NUM_BARS) - 1), res_name);
}
EXPORT_SYMBOL(pci_request_regions_exclusive);
@@ -6401,8 +6409,13 @@ static int __init pci_setup(char *str)
pcie_ecrc_get_policy(str + 5);
} else if (!strncmp(str, "hpiosize=", 9)) {
pci_hotplug_io_size = memparse(str + 9, &str);
+ } else if (!strncmp(str, "hpmmiosize=", 11)) {
+ pci_hotplug_mmio_size = memparse(str + 11, &str);
+ } else if (!strncmp(str, "hpmmioprefsize=", 15)) {
+ pci_hotplug_mmio_pref_size = memparse(str + 15, &str);
} else if (!strncmp(str, "hpmemsize=", 10)) {
- pci_hotplug_mem_size = memparse(str + 10, &str);
+ pci_hotplug_mmio_size = memparse(str + 10, &str);
+ pci_hotplug_mmio_pref_size = pci_hotplug_mmio_size;
} else if (!strncmp(str, "hpbussize=", 10)) {
pci_hotplug_bus_size =
simple_strtoul(str + 10, &str, 0);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index ec749c4a6ba9..e16fdbd6f2c3 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -220,7 +220,8 @@ extern const struct device_type pci_dev_type;
extern const struct attribute_group *pci_bus_groups[];
extern unsigned long pci_hotplug_io_size;
-extern unsigned long pci_hotplug_mem_size;
+extern unsigned long pci_hotplug_mmio_size;
+extern unsigned long pci_hotplug_mmio_pref_size;
extern unsigned long pci_hotplug_bus_size;
/**
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index dbe645eb3180..54a53e260391 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -573,6 +573,7 @@ static void devm_pci_release_host_bridge_dev(struct device *dev)
bridge->release_fn(bridge);
pci_free_resource_list(&bridge->windows);
+ pci_free_resource_list(&bridge->dma_ranges);
}
static void pci_release_host_bridge_dev(struct device *dev)
@@ -1093,14 +1094,15 @@ static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus,
* @sec: updated with secondary bus number from EA
* @sub: updated with subordinate bus number from EA
*
- * If @dev is a bridge with EA capability, update @sec and @sub with
- * fixed bus numbers from the capability and return true. Otherwise,
- * return false.
+ * If @dev is a bridge with EA capability that specifies valid secondary
+ * and subordinate bus numbers, return true with the bus numbers in @sec
+ * and @sub. Otherwise return false.
*/
static bool pci_ea_fixed_busnrs(struct pci_dev *dev, u8 *sec, u8 *sub)
{
int ea, offset;
u32 dw;
+ u8 ea_sec, ea_sub;
if (dev->hdr_type != PCI_HEADER_TYPE_BRIDGE)
return false;
@@ -1112,8 +1114,13 @@ static bool pci_ea_fixed_busnrs(struct pci_dev *dev, u8 *sec, u8 *sub)
offset = ea + PCI_EA_FIRST_ENT;
pci_read_config_dword(dev, offset, &dw);
- *sec = dw & PCI_EA_SEC_BUS_MASK;
- *sub = (dw & PCI_EA_SUB_BUS_MASK) >> PCI_EA_SUB_BUS_SHIFT;
+ ea_sec = dw & PCI_EA_SEC_BUS_MASK;
+ ea_sub = (dw & PCI_EA_SUB_BUS_MASK) >> PCI_EA_SUB_BUS_SHIFT;
+ if (ea_sec == 0 || ea_sub < ea_sec)
+ return false;
+
+ *sec = ea_sec;
+ *sub = ea_sub;
return true;
}
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 5495537c60c2..6ef74bf5013f 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -258,13 +258,13 @@ static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma)
}
/* Make sure the caller is mapping a real resource for this device */
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (dev->resource[i].flags & res_bit &&
pci_mmap_fits(dev, i, vma, PCI_MMAP_PROCFS))
break;
}
- if (i >= PCI_ROM_RESOURCE)
+ if (i >= PCI_STD_NUM_BARS)
return -ENODEV;
if (fpriv->mmap_state == pci_mmap_mem &&
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 320255e5e8f8..5d5e6f2f7837 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -474,7 +474,7 @@ static void quirk_extend_bar_to_page(struct pci_dev *dev)
{
int i;
- for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
struct resource *r = &dev->resource[i];
if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) {
@@ -1809,7 +1809,7 @@ static void quirk_alder_ioapic(struct pci_dev *pdev)
* The next five BARs all seem to be rubbish, so just clean
* them out.
*/
- for (i = 1; i < 6; i++)
+ for (i = 1; i < PCI_STD_NUM_BARS; i++)
memset(&pdev->resource[i], 0, sizeof(pdev->resource[i]));
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic);
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index e7dbe21705ba..f279826204eb 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -752,24 +752,32 @@ static void pci_bridge_check_ranges(struct pci_bus *bus)
}
/*
- * Helper function for sizing routines: find first available bus resource
- * of a given type. Note: we intentionally skip the bus resources which
- * have already been assigned (that is, have non-NULL parent resource).
+ * Helper function for sizing routines. Assigned resources have non-NULL
+ * parent resource.
+ *
+ * Return first unassigned resource of the correct type. If there is none,
+ * return first assigned resource of the correct type. If none of the
+ * above, return NULL.
+ *
+ * Returning an assigned resource of the correct type allows the caller to
+ * distinguish between already assigned and no resource of the correct type.
*/
-static struct resource *find_free_bus_resource(struct pci_bus *bus,
- unsigned long type_mask,
- unsigned long type)
+static struct resource *find_bus_resource_of_type(struct pci_bus *bus,
+ unsigned long type_mask,
+ unsigned long type)
{
+ struct resource *r, *r_assigned = NULL;
int i;
- struct resource *r;
pci_bus_for_each_resource(bus, r, i) {
if (r == &ioport_resource || r == &iomem_resource)
continue;
if (r && (r->flags & type_mask) == type && !r->parent)
return r;
+ if (r && (r->flags & type_mask) == type && !r_assigned)
+ r_assigned = r;
}
- return NULL;
+ return r_assigned;
}
static resource_size_t calculate_iosize(resource_size_t size,
@@ -866,8 +874,8 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
struct list_head *realloc_head)
{
struct pci_dev *dev;
- struct resource *b_res = find_free_bus_resource(bus, IORESOURCE_IO,
- IORESOURCE_IO);
+ struct resource *b_res = find_bus_resource_of_type(bus, IORESOURCE_IO,
+ IORESOURCE_IO);
resource_size_t size = 0, size0 = 0, size1 = 0;
resource_size_t children_add_size = 0;
resource_size_t min_align, align;
@@ -875,6 +883,10 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
if (!b_res)
return;
+ /* If resource is already assigned, nothing more to do */
+ if (b_res->parent)
+ return;
+
min_align = window_alignment(bus, IORESOURCE_IO);
list_for_each_entry(dev, &bus->devices, bus_list) {
int i;
@@ -978,7 +990,7 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
resource_size_t min_align, align, size, size0, size1;
resource_size_t aligns[18]; /* Alignments from 1MB to 128GB */
int order, max_order;
- struct resource *b_res = find_free_bus_resource(bus,
+ struct resource *b_res = find_bus_resource_of_type(bus,
mask | IORESOURCE_PREFETCH, type);
resource_size_t children_add_size = 0;
resource_size_t children_add_align = 0;
@@ -987,6 +999,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
if (!b_res)
return -ENOSPC;
+ /* If resource is already assigned, nothing more to do */
+ if (b_res->parent)
+ return 0;
+
memset(aligns, 0, sizeof(aligns));
max_order = 0;
size = 0;
@@ -1178,7 +1194,8 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
{
struct pci_dev *dev;
unsigned long mask, prefmask, type2 = 0, type3 = 0;
- resource_size_t additional_mem_size = 0, additional_io_size = 0;
+ resource_size_t additional_io_size = 0, additional_mmio_size = 0,
+ additional_mmio_pref_size = 0;
struct resource *b_res;
int ret;
@@ -1212,7 +1229,8 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
pci_bridge_check_ranges(bus);
if (bus->self->is_hotplug_bridge) {
additional_io_size = pci_hotplug_io_size;
- additional_mem_size = pci_hotplug_mem_size;
+ additional_mmio_size = pci_hotplug_mmio_size;
+ additional_mmio_pref_size = pci_hotplug_mmio_pref_size;
}
/* Fall through */
default:
@@ -1230,9 +1248,9 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
if (b_res[2].flags & IORESOURCE_MEM_64) {
prefmask |= IORESOURCE_MEM_64;
ret = pbus_size_mem(bus, prefmask, prefmask,
- prefmask, prefmask,
- realloc_head ? 0 : additional_mem_size,
- additional_mem_size, realloc_head);
+ prefmask, prefmask,
+ realloc_head ? 0 : additional_mmio_pref_size,
+ additional_mmio_pref_size, realloc_head);
/*
* If successful, all non-prefetchable resources
@@ -1254,9 +1272,9 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
if (!type2) {
prefmask &= ~IORESOURCE_MEM_64;
ret = pbus_size_mem(bus, prefmask, prefmask,
- prefmask, prefmask,
- realloc_head ? 0 : additional_mem_size,
- additional_mem_size, realloc_head);
+ prefmask, prefmask,
+ realloc_head ? 0 : additional_mmio_pref_size,
+ additional_mmio_pref_size, realloc_head);
/*
* If successful, only non-prefetchable resources
@@ -1265,7 +1283,7 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
if (ret == 0)
mask = prefmask;
else
- additional_mem_size += additional_mem_size;
+ additional_mmio_size += additional_mmio_pref_size;
type2 = type3 = IORESOURCE_MEM;
}
@@ -1285,8 +1303,8 @@ void __pci_bus_size_bridges(struct pci_bus *bus, struct list_head *realloc_head)
* prefetchable resource in a 64-bit prefetchable window.
*/
pbus_size_mem(bus, mask, IORESOURCE_MEM, type2, type3,
- realloc_head ? 0 : additional_mem_size,
- additional_mem_size, realloc_head);
+ realloc_head ? 0 : additional_mmio_size,
+ additional_mmio_size, realloc_head);
break;
}
}
@@ -2066,6 +2084,8 @@ int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type)
unsigned int i;
int ret;
+ down_read(&pci_bus_sem);
+
/* Walk to the root hub, releasing bridge BARs when possible */
next = bridge;
do {
@@ -2100,8 +2120,10 @@ int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type)
next = bridge->bus ? bridge->bus->self : NULL;
} while (next);
- if (list_empty(&saved))
+ if (list_empty(&saved)) {
+ up_read(&pci_bus_sem);
return -ENOENT;
+ }
__pci_bus_size_bridges(bridge->subordinate, &added);
__pci_bridge_assign_resources(bridge, &added, &failed);
@@ -2122,6 +2144,7 @@ int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type)
}
free_list(&saved);
+ up_read(&pci_bus_sem);
return 0;
cleanup:
@@ -2150,6 +2173,7 @@ cleanup:
pci_setup_bridge(bridge->subordinate);
}
free_list(&saved);
+ up_read(&pci_bus_sem);
return ret;
}
diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c
index 125a173bed45..4dd31dd9feea 100644
--- a/drivers/rapidio/devices/tsi721.c
+++ b/drivers/rapidio/devices/tsi721.c
@@ -2755,7 +2755,7 @@ static int tsi721_probe(struct pci_dev *pdev,
{
int i;
- for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
tsi_debug(INIT, &pdev->dev, "res%d %pR",
i, &pdev->resource[i]);
}
diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 68a8217032d0..1a3661d6be06 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -1186,7 +1186,7 @@ static void pm8001_hw_chip_rst(struct pm8001_hba_info *pm8001_ha)
void pm8001_chip_iounmap(struct pm8001_hba_info *pm8001_ha)
{
s8 bar, logical = 0;
- for (bar = 0; bar < 6; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
/*
** logical BARs for SPC:
** bar 0 and 1 - logical BAR0
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 3374f553c617..aca913490eb5 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -401,7 +401,7 @@ static int pm8001_ioremap(struct pm8001_hba_info *pm8001_ha)
pdev = pm8001_ha->pdev;
/* map pci mem (PMC pci base 0-3)*/
- for (bar = 0; bar < 6; bar++) {
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
/*
** logical BARs for SPC:
** bar 0 and 1 - logical BAR0
diff --git a/drivers/staging/gasket/gasket_constants.h b/drivers/staging/gasket/gasket_constants.h
index 50d87c7b178c..9ea9c8833f27 100644
--- a/drivers/staging/gasket/gasket_constants.h
+++ b/drivers/staging/gasket/gasket_constants.h
@@ -13,9 +13,6 @@
/* The maximum devices per each type. */
#define GASKET_DEV_MAX 256
-/* The number of supported (and possible) PCI BARs. */
-#define GASKET_NUM_BARS 6
-
/* The number of supported Gasket page tables per device. */
#define GASKET_MAX_NUM_PAGE_TABLES 1
diff --git a/drivers/staging/gasket/gasket_core.c b/drivers/staging/gasket/gasket_core.c
index 13179f063a61..cd8be80d2076 100644
--- a/drivers/staging/gasket/gasket_core.c
+++ b/drivers/staging/gasket/gasket_core.c
@@ -371,7 +371,7 @@ static int gasket_setup_pci(struct pci_dev *pci_dev,
{
int i, mapped_bars, ret;
- for (i = 0; i < GASKET_NUM_BARS; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
ret = gasket_map_pci_bar(gasket_dev, i);
if (ret) {
mapped_bars = i;
@@ -393,7 +393,7 @@ static void gasket_cleanup_pci(struct gasket_dev *gasket_dev)
{
int i;
- for (i = 0; i < GASKET_NUM_BARS; i++)
+ for (i = 0; i < PCI_STD_NUM_BARS; i++)
gasket_unmap_pci_bar(gasket_dev, i);
}
@@ -493,7 +493,7 @@ static ssize_t gasket_sysfs_data_show(struct device *device,
(enum gasket_sysfs_attribute_type)gasket_attr->data.attr_type;
switch (sysfs_type) {
case ATTR_BAR_OFFSETS:
- for (i = 0; i < GASKET_NUM_BARS; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
bar_desc = &driver_desc->bar_descriptions[i];
if (bar_desc->size == 0)
continue;
@@ -505,7 +505,7 @@ static ssize_t gasket_sysfs_data_show(struct device *device,
}
break;
case ATTR_BAR_SIZES:
- for (i = 0; i < GASKET_NUM_BARS; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
bar_desc = &driver_desc->bar_descriptions[i];
if (bar_desc->size == 0)
continue;
@@ -556,7 +556,7 @@ static ssize_t gasket_sysfs_data_show(struct device *device,
ret = snprintf(buf, PAGE_SIZE, "%d\n", gasket_dev->reset_count);
break;
case ATTR_USER_MEM_RANGES:
- for (i = 0; i < GASKET_NUM_BARS; ++i) {
+ for (i = 0; i < PCI_STD_NUM_BARS; ++i) {
current_written =
gasket_write_mappable_regions(buf, driver_desc,
i);
@@ -736,7 +736,7 @@ static int gasket_get_bar_index(const struct gasket_dev *gasket_dev,
const struct gasket_driver_desc *driver_desc;
driver_desc = gasket_dev->internal_desc->driver_desc;
- for (i = 0; i < GASKET_NUM_BARS; ++i) {
+ for (i = 0; i < PCI_STD_NUM_BARS; ++i) {
struct gasket_bar_desc bar_desc =
driver_desc->bar_descriptions[i];
diff --git a/drivers/staging/gasket/gasket_core.h b/drivers/staging/gasket/gasket_core.h
index be44ac1e3118..c417acadb0d5 100644
--- a/drivers/staging/gasket/gasket_core.h
+++ b/drivers/staging/gasket/gasket_core.h
@@ -268,7 +268,7 @@ struct gasket_dev {
char kobj_name[GASKET_NAME_MAX];
/* Virtual address of mapped BAR memory range. */
- struct gasket_bar_data bar_data[GASKET_NUM_BARS];
+ struct gasket_bar_data bar_data[PCI_STD_NUM_BARS];
/* Coherent buffer. */
struct gasket_coherent_buffer coherent_buffer;
@@ -369,7 +369,7 @@ struct gasket_driver_desc {
/* Set of 6 bar descriptions that describe all PCIe bars.
* Note that BUS/AXI devices (i.e. non PCI devices) use those.
*/
- struct gasket_bar_desc bar_descriptions[GASKET_NUM_BARS];
+ struct gasket_bar_desc bar_descriptions[PCI_STD_NUM_BARS];
/*
* Coherent buffer description.
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 6adbadd6a56a..0b8784cd6d71 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -48,8 +48,6 @@ struct f815xxa_data {
int idx;
};
-#define PCI_NUM_BAR_RESOURCES 6
-
struct serial_private {
struct pci_dev *dev;
unsigned int nr;
@@ -89,7 +87,7 @@ setup_port(struct serial_private *priv, struct uart_8250_port *port,
{
struct pci_dev *dev = priv->dev;
- if (bar >= PCI_NUM_BAR_RESOURCES)
+ if (bar >= PCI_STD_NUM_BARS)
return -EINVAL;
if (pci_resource_flags(dev, bar) & IORESOURCE_MEM) {
@@ -4060,7 +4058,7 @@ serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
return -ENODEV;
num_iomem = num_port = 0;
- for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_flags(dev, i) & IORESOURCE_IO) {
num_port++;
if (first_port == -1)
@@ -4088,7 +4086,7 @@ serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
*/
first_port = -1;
num_port = 0;
- for (i = 0; i < PCI_NUM_BAR_RESOURCES; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
if (pci_resource_flags(dev, i) & IORESOURCE_IO &&
pci_resource_len(dev, i) == 8 &&
(first_port == -1 || (first_port + num_port) == i)) {
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 9e26b0143a59..9ae2a7a93df2 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -234,7 +234,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* UHCI */
int region;
- for (region = 0; region < PCI_ROM_RESOURCE; region++) {
+ for (region = 0; region < PCI_STD_NUM_BARS; region++) {
if (!(pci_resource_flags(dev, region) &
IORESOURCE_IO))
continue;
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index f6d04491df60..6c7f0a876b96 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -728,7 +728,7 @@ static void quirk_usb_handoff_uhci(struct pci_dev *pdev)
if (!pio_enabled(pdev))
return;
- for (i = 0; i < PCI_ROM_RESOURCE; i++)
+ for (i = 0; i < PCI_STD_NUM_BARS; i++)
if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
base = pci_resource_start(pdev, i);
break;
diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
index 02206162eaa9..379a02c36e37 100644
--- a/drivers/vfio/pci/vfio_pci.c
+++ b/drivers/vfio/pci/vfio_pci.c
@@ -110,13 +110,15 @@ static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
static void vfio_pci_probe_mmaps(struct vfio_pci_device *vdev)
{
struct resource *res;
- int bar;
+ int i;
struct vfio_pci_dummy_resource *dummy_res;
INIT_LIST_HEAD(&vdev->dummy_resources_list);
- for (bar = PCI_STD_RESOURCES; bar <= PCI_STD_RESOURCE_END; bar++) {
- res = vdev->pdev->resource + bar;
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
+ int bar = i + PCI_STD_RESOURCES;
+
+ res = &vdev->pdev->resource[bar];
if (!IS_ENABLED(CONFIG_VFIO_PCI_MMAP))
goto no_mmap;
@@ -399,7 +401,8 @@ static void vfio_pci_disable(struct vfio_pci_device *vdev)
vfio_config_free(vdev);
- for (bar = PCI_STD_RESOURCES; bar <= PCI_STD_RESOURCE_END; bar++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
+ bar = i + PCI_STD_RESOURCES;
if (!vdev->barmap[bar])
continue;
pci_iounmap(pdev, vdev->barmap[bar]);
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index f0891bd8444c..90c0b80f8acf 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -450,30 +450,32 @@ static void vfio_bar_fixup(struct vfio_pci_device *vdev)
{
struct pci_dev *pdev = vdev->pdev;
int i;
- __le32 *bar;
+ __le32 *vbar;
u64 mask;
- bar = (__le32 *)&vdev->vconfig[PCI_BASE_ADDRESS_0];
+ vbar = (__le32 *)&vdev->vconfig[PCI_BASE_ADDRESS_0];
- for (i = PCI_STD_RESOURCES; i <= PCI_STD_RESOURCE_END; i++, bar++) {
- if (!pci_resource_start(pdev, i)) {
- *bar = 0; /* Unmapped by host = unimplemented to user */
+ for (i = 0; i < PCI_STD_NUM_BARS; i++, vbar++) {
+ int bar = i + PCI_STD_RESOURCES;
+
+ if (!pci_resource_start(pdev, bar)) {
+ *vbar = 0; /* Unmapped by host = unimplemented to user */
continue;
}
- mask = ~(pci_resource_len(pdev, i) - 1);
+ mask = ~(pci_resource_len(pdev, bar) - 1);
- *bar &= cpu_to_le32((u32)mask);
- *bar |= vfio_generate_bar_flags(pdev, i);
+ *vbar &= cpu_to_le32((u32)mask);
+ *vbar |= vfio_generate_bar_flags(pdev, bar);
- if (*bar & cpu_to_le32(PCI_BASE_ADDRESS_MEM_TYPE_64)) {
- bar++;
- *bar &= cpu_to_le32((u32)(mask >> 32));
+ if (*vbar & cpu_to_le32(PCI_BASE_ADDRESS_MEM_TYPE_64)) {
+ vbar++;
+ *vbar &= cpu_to_le32((u32)(mask >> 32));
i++;
}
}
- bar = (__le32 *)&vdev->vconfig[PCI_ROM_ADDRESS];
+ vbar = (__le32 *)&vdev->vconfig[PCI_ROM_ADDRESS];
/*
* NB. REGION_INFO will have reported zero size if we weren't able
@@ -483,14 +485,14 @@ static void vfio_bar_fixup(struct vfio_pci_device *vdev)
if (pci_resource_start(pdev, PCI_ROM_RESOURCE)) {
mask = ~(pci_resource_len(pdev, PCI_ROM_RESOURCE) - 1);
mask |= PCI_ROM_ADDRESS_ENABLE;
- *bar &= cpu_to_le32((u32)mask);
+ *vbar &= cpu_to_le32((u32)mask);
} else if (pdev->resource[PCI_ROM_RESOURCE].flags &
IORESOURCE_ROM_SHADOW) {
mask = ~(0x20000 - 1);
mask |= PCI_ROM_ADDRESS_ENABLE;
- *bar &= cpu_to_le32((u32)mask);
+ *vbar &= cpu_to_le32((u32)mask);
} else
- *bar = 0;
+ *vbar = 0;
vdev->bardirty = false;
}
diff --git a/drivers/vfio/pci/vfio_pci_private.h b/drivers/vfio/pci/vfio_pci_private.h
index ee6ee91718a4..8a2c7607d513 100644
--- a/drivers/vfio/pci/vfio_pci_private.h
+++ b/drivers/vfio/pci/vfio_pci_private.h
@@ -86,8 +86,8 @@ struct vfio_pci_reflck {
struct vfio_pci_device {
struct pci_dev *pdev;
- void __iomem *barmap[PCI_STD_RESOURCE_END + 1];
- bool bar_mmap_supported[PCI_STD_RESOURCE_END + 1];
+ void __iomem *barmap[PCI_STD_NUM_BARS];
+ bool bar_mmap_supported[PCI_STD_NUM_BARS];
u8 *pci_config_map;
u8 *vconfig;
struct perm_bits *msi_perm;
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index e6a1c805064f..19af5626a317 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1774,7 +1774,7 @@ int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, int res_id, const
int err, idx, bar;
bool res_id_found = false;
- for (idx = 0, bar = 0; bar < PCI_ROM_RESOURCE; bar++) {
+ for (idx = 0, bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM))
continue;
idx++;
@@ -1784,7 +1784,7 @@ int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, int res_id, const
if (!ap)
return -ENOMEM;
- for (idx = 0, bar = 0; bar < PCI_ROM_RESOURCE; bar++) {
+ for (idx = 0, bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM))
continue;
ap->ranges[idx].base = pci_resource_start(pdev, bar);
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 51d97ec4f58f..1caa3726cb45 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -653,7 +653,7 @@ static void efifb_fixup_resources(struct pci_dev *dev)
if (!base)
return;
- for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ for (i = 0; i < PCI_STD_NUM_BARS; i++) {
struct resource *res = &dev->resource[i];
if (!(res->flags & IORESOURCE_MEM))
diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index f641badc2c61..56f1846b9d39 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -117,7 +117,7 @@ struct pci_epc_features {
unsigned int msix_capable : 1;
u8 reserved_bar;
u8 bar_fixed_64bit;
- u64 bar_fixed_size[BAR_5 + 1];
+ u64 bar_fixed_size[PCI_STD_NUM_BARS];
size_t align;
};
diff --git a/include/linux/pci.h b/include/linux/pci.h
index a33abbfda925..fced4101c76c 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -82,7 +82,7 @@ enum pci_mmap_state {
enum {
/* #0-5: standard PCI resources */
PCI_STD_RESOURCES,
- PCI_STD_RESOURCE_END = 5,
+ PCI_STD_RESOURCE_END = PCI_STD_RESOURCES + PCI_STD_NUM_BARS - 1,
/* #6: expansion ROM resource */
PCI_ROM_RESOURCE,
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 5869e5778a05..acb7d2bdb419 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -34,6 +34,7 @@
* of which the first 64 bytes are standardized as follows:
*/
#define PCI_STD_HEADER_SIZEOF 64
+#define PCI_STD_NUM_BARS 6 /* Number of standard BARs */
#define PCI_VENDOR_ID 0x00 /* 16 bits */
#define PCI_DEVICE_ID 0x02 /* 16 bits */
#define PCI_COMMAND 0x04 /* 16 bits */
diff --git a/lib/devres.c b/lib/devres.c
index 6a0e9bd6524a..ab75d73122b8 100644
--- a/lib/devres.c
+++ b/lib/devres.c
@@ -262,7 +262,7 @@ EXPORT_SYMBOL(devm_ioport_unmap);
/*
* PCI iomap devres
*/
-#define PCIM_IOMAP_MAX PCI_ROM_RESOURCE
+#define PCIM_IOMAP_MAX PCI_STD_NUM_BARS
struct pcim_iomap_devres {
void __iomem *table[PCIM_IOMAP_MAX];