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authorJon Mason <jon.mason@intel.com>2013-01-21 16:40:39 -0700
committerJon Mason <jon.mason@intel.com>2013-09-03 14:48:53 -0700
commitac477afb0431386575ef453f50fa0052c3f0461b (patch)
treef32e9f650e68e345baee7919800d8b8e6da60d82
parentbe4dac0fcacd7d62e0b4f7ff51a7032e197b62af (diff)
downloadlinux-ac477afb0431386575ef453f50fa0052c3f0461b.tar.bz2
NTB: Enable 32bit Support
Correct the issues on NTB that prevented it from working on x86_32 and modify the Kconfig to allow it to be permitted to be used in that environment as well. Signed-off-by: Jon Mason <jon.mason@intel.com>
-rw-r--r--drivers/ntb/Kconfig2
-rw-r--r--drivers/ntb/ntb_hw.c4
-rw-r--r--drivers/ntb/ntb_hw.h17
3 files changed, 19 insertions, 4 deletions
diff --git a/drivers/ntb/Kconfig b/drivers/ntb/Kconfig
index 37ee6495acc1..f69df793dbe2 100644
--- a/drivers/ntb/Kconfig
+++ b/drivers/ntb/Kconfig
@@ -1,7 +1,7 @@
config NTB
tristate "Intel Non-Transparent Bridge support"
depends on PCI
- depends on X86_64
+ depends on X86
help
The PCI-E Non-transparent bridge hardware is a point-to-point PCI-E bus
connecting 2 systems. When configured, writes to the device's PCI
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index 784446e1de05..ab34795cf125 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -376,7 +376,7 @@ void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw)
*
* RETURNS: the size of the memory window or zero on error
*/
-resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw)
+u64 ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw)
{
if (mw >= ntb_max_mw(ndev))
return 0;
@@ -1257,7 +1257,7 @@ static int ntb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ioremap_wc(pci_resource_start(pdev, MW_TO_BAR(i)),
ndev->mw[i].bar_sz);
dev_info(&pdev->dev, "MW %d size %llu\n", i,
- pci_resource_len(pdev, MW_TO_BAR(i)));
+ (unsigned long long) ndev->mw[i].bar_sz);
if (!ndev->mw[i].vbase) {
dev_warn(&pdev->dev, "Cannot remap BAR %d\n",
MW_TO_BAR(i));
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h
index 591d4ff5d88e..d838bc13b956 100644
--- a/drivers/ntb/ntb_hw.h
+++ b/drivers/ntb/ntb_hw.h
@@ -62,6 +62,21 @@
#define msix_table_size(control) ((control & PCI_MSIX_FLAGS_QSIZE)+1)
+#ifndef readq
+static inline u64 readq(void __iomem *addr)
+{
+ return readl(addr) | (((u64) readl(addr + 4)) << 32LL);
+}
+#endif
+
+#ifndef writeq
+static inline void writeq(u64 val, void __iomem *addr)
+{
+ writel(val & 0xffffffff, addr);
+ writel(val >> 32, addr + 4);
+}
+#endif
+
#define NTB_BAR_MMIO 0
#define NTB_BAR_23 2
#define NTB_BAR_45 4
@@ -226,7 +241,7 @@ int ntb_read_local_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
int ntb_write_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 val);
int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val);
void __iomem *ntb_get_mw_vbase(struct ntb_device *ndev, unsigned int mw);
-resource_size_t ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw);
+u64 ntb_get_mw_size(struct ntb_device *ndev, unsigned int mw);
void ntb_ring_sdb(struct ntb_device *ndev, unsigned int idx);
void *ntb_find_transport(struct pci_dev *pdev);