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Diffstat (limited to 'arch/arm/mach-iop13xx/pci.c')
-rw-r--r--arch/arm/mach-iop13xx/pci.c126
1 files changed, 66 insertions, 60 deletions
diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index d1d0d32ca77..9082b84aeeb 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -18,13 +18,16 @@
*/
#include <linux/pci.h>
+#include <linux/slab.h>
#include <linux/delay.h>
-
+#include <linux/jiffies.h>
+#include <linux/export.h>
#include <asm/irq.h>
-#include <asm/hardware.h>
+#include <mach/hardware.h>
#include <asm/sizes.h>
+#include <asm/signal.h>
#include <asm/mach/pci.h>
-#include <asm/arch/pci.h>
+#include <mach/pci.h>
#define IOP13XX_PCI_DEBUG 0
#define PRINTK(x...) ((void)(IOP13XX_PCI_DEBUG && printk(x)))
@@ -33,12 +36,10 @@ u32 iop13xx_atux_pmmr_offset; /* This offset can change based on strapping */
u32 iop13xx_atue_pmmr_offset; /* This offset can change based on strapping */
static struct pci_bus *pci_bus_atux = 0;
static struct pci_bus *pci_bus_atue = 0;
-u32 iop13xx_atue_mem_base;
-u32 iop13xx_atux_mem_base;
+void __iomem *iop13xx_atue_mem_base;
+void __iomem *iop13xx_atux_mem_base;
size_t iop13xx_atue_mem_size;
size_t iop13xx_atux_mem_size;
-unsigned long iop13xx_pcibios_min_io = 0;
-unsigned long iop13xx_pcibios_min_mem = 0;
EXPORT_SYMBOL(iop13xx_atue_mem_base);
EXPORT_SYMBOL(iop13xx_atux_mem_base);
@@ -87,19 +88,18 @@ void iop13xx_map_pci_memory(void)
}
if (end) {
- iop13xx_atux_mem_base =
- (u32) __arm_ioremap_pfn(
+ iop13xx_atux_mem_base = __arm_ioremap_pfn(
__phys_to_pfn(IOP13XX_PCIX_LOWER_MEM_PA)
, 0, iop13xx_atux_mem_size, MT_DEVICE);
if (!iop13xx_atux_mem_base) {
printk("%s: atux allocation "
- "failed\n", __FUNCTION__);
+ "failed\n", __func__);
BUG();
}
} else
iop13xx_atux_mem_size = 0;
- PRINTK("%s: atu: %d bus_size: %d mem_base: %x\n",
- __FUNCTION__, atu, iop13xx_atux_mem_size,
+ PRINTK("%s: atu: %d bus_size: %d mem_base: %p\n",
+ __func__, atu, iop13xx_atux_mem_size,
iop13xx_atux_mem_base);
break;
case 1:
@@ -113,24 +113,23 @@ void iop13xx_map_pci_memory(void)
}
if (end) {
- iop13xx_atue_mem_base =
- (u32) __arm_ioremap_pfn(
+ iop13xx_atue_mem_base = __arm_ioremap_pfn(
__phys_to_pfn(IOP13XX_PCIE_LOWER_MEM_PA)
, 0, iop13xx_atue_mem_size, MT_DEVICE);
if (!iop13xx_atue_mem_base) {
printk("%s: atue allocation "
- "failed\n", __FUNCTION__);
+ "failed\n", __func__);
BUG();
}
} else
iop13xx_atue_mem_size = 0;
- PRINTK("%s: atu: %d bus_size: %d mem_base: %x\n",
- __FUNCTION__, atu, iop13xx_atue_mem_size,
+ PRINTK("%s: atu: %d bus_size: %d mem_base: %p\n",
+ __func__, atu, iop13xx_atue_mem_size,
iop13xx_atue_mem_base);
break;
}
- printk("%s: Initialized (%uM @ resource/virtual: %08lx/%08x)\n",
+ printk("%s: Initialized (%uM @ resource/virtual: %08lx/%p)\n",
atu ? "ATUE" : "ATUX",
(atu ? iop13xx_atue_mem_size : iop13xx_atux_mem_size) /
SZ_1M,
@@ -144,7 +143,7 @@ void iop13xx_map_pci_memory(void)
}
}
-static inline int iop13xx_atu_function(int atu)
+static int iop13xx_atu_function(int atu)
{
int func = 0;
/* the function number depends on the value of the
@@ -223,7 +222,7 @@ static u32 iop13xx_atue_cfg_address(struct pci_bus *bus, int devfn, int where)
/* This routine checks the status of the last configuration cycle. If an error
* was detected it returns >0, else it returns a 0. The errors being checked
* are parity, master abort, target abort (master and target). These types of
- * errors occure during a config cycle where there is no device, like during
+ * errors occur during a config cycle where there is no device, like during
* the discovery stage.
*/
static int iop13xx_atux_pci_status(int clear)
@@ -259,7 +258,7 @@ static int iop13xx_atux_pci_status(int clear)
* data. Note that the data dependency on %0 encourages an abort
* to be detected before we return.
*/
-static inline u32 iop13xx_atux_read(unsigned long addr)
+static u32 iop13xx_atux_read(unsigned long addr)
{
u32 val;
@@ -330,7 +329,7 @@ static struct pci_ops iop13xx_atux_ops = {
/* This routine checks the status of the last configuration cycle. If an error
* was detected it returns >0, else it returns a 0. The errors being checked
* are parity, master abort, target abort (master and target). These types of
- * errors occure during a config cycle where there is no device, like during
+ * errors occur during a config cycle where there is no device, like during
* the discovery stage.
*/
static int iop13xx_atue_pci_status(int clear)
@@ -387,8 +386,8 @@ static int iop13xx_atue_pci_status(int clear)
return err;
}
-static inline int __init
-iop13xx_pcie_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+static int
+iop13xx_pcie_map_irq(const struct pci_dev *dev, u8 idsel, u8 pin)
{
WARN_ON(idsel != 0);
@@ -401,7 +400,7 @@ iop13xx_pcie_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
}
}
-static inline u32 iop13xx_atue_read(unsigned long addr)
+static u32 iop13xx_atue_read(unsigned long addr)
{
u32 val;
@@ -536,14 +535,14 @@ struct pci_bus *iop13xx_scan_bus(int nr, struct pci_sys_data *sys)
while(time_before(jiffies, atux_trhfa_timeout))
udelay(100);
- bus = pci_bus_atux = pci_scan_bus(sys->busnr,
- &iop13xx_atux_ops,
- sys);
+ bus = pci_bus_atux = pci_scan_root_bus(NULL, sys->busnr,
+ &iop13xx_atux_ops,
+ sys, &sys->resources);
break;
case IOP13XX_INIT_ATU_ATUE:
- bus = pci_bus_atue = pci_scan_bus(sys->busnr,
- &iop13xx_atue_ops,
- sys);
+ bus = pci_bus_atue = pci_scan_root_bus(NULL, sys->busnr,
+ &iop13xx_atue_ops,
+ sys, &sys->resources);
break;
}
@@ -559,6 +558,14 @@ void __init iop13xx_atue_setup(void)
int func = iop13xx_atu_function(IOP13XX_INIT_ATU_ATUE);
u32 reg_val;
+#ifdef CONFIG_PCI_MSI
+ /* BAR 0 (inbound msi window) */
+ __raw_writel(IOP13XX_MU_BASE_PHYS, IOP13XX_MU_MUBAR);
+ __raw_writel(~(IOP13XX_MU_WINDOW_SIZE - 1), IOP13XX_ATUE_IALR0);
+ __raw_writel(IOP13XX_MU_BASE_PHYS, IOP13XX_ATUE_IATVR0);
+ __raw_writel(IOP13XX_MU_BASE_PCI, IOP13XX_ATUE_IABAR0);
+#endif
+
/* BAR 1 (1:1 mapping with Physical RAM) */
/* Set limit and enable */
__raw_writel(~(IOP13XX_MAX_RAM_SIZE - PHYS_OFFSET - 1) & ~0x1,
@@ -720,6 +727,14 @@ void __init iop13xx_atux_setup(void)
else
atux_trhfa_timeout = jiffies;
+#ifdef CONFIG_PCI_MSI
+ /* BAR 0 (inbound msi window) */
+ __raw_writel(IOP13XX_MU_BASE_PHYS, IOP13XX_MU_MUBAR);
+ __raw_writel(~(IOP13XX_MU_WINDOW_SIZE - 1), IOP13XX_ATUX_IALR0);
+ __raw_writel(IOP13XX_MU_BASE_PHYS, IOP13XX_ATUX_IATVR0);
+ __raw_writel(IOP13XX_MU_BASE_PCI, IOP13XX_ATUX_IABAR0);
+#endif
+
/* BAR 1 (1:1 mapping with Physical RAM) */
/* Set limit and enable */
__raw_writel(~(IOP13XX_MAX_RAM_SIZE - PHYS_OFFSET - 1) & ~0x1,
@@ -953,7 +968,7 @@ void __init iop13xx_pci_init(void)
__raw_writel(__raw_readl(IOP13XX_XBG_BECSR) & 3, IOP13XX_XBG_BECSR);
/* Setup the Min Address for PCI memory... */
- iop13xx_pcibios_min_mem = IOP13XX_PCIX_LOWER_MEM_BA;
+ pcibios_min_mem = IOP13XX_PCIX_LOWER_MEM_BA;
/* if Linux is given control of an ATU
* clear out its prior configuration,
@@ -969,11 +984,11 @@ void __init iop13xx_pci_init(void)
iop13xx_atux_setup();
}
- hook_fault_code(16+6, iop13xx_pci_abort, SIGBUS,
+ hook_fault_code(16+6, iop13xx_pci_abort, SIGBUS, 0,
"imprecise external abort");
}
-/* intialize the pci memory space. handle any combination of
+/* initialize the pci memory space. handle any combination of
* atue and atux enabled/disabled
*/
int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
@@ -985,11 +1000,10 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
if (nr > 1)
return 0;
- res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL);
+ res = kzalloc(sizeof(struct resource), GFP_KERNEL);
if (!res)
panic("PCI: unable to alloc resources");
- memset(res, 0, sizeof(struct resource) * 2);
/* 'nr' assumptions:
* ATUX is always 0
@@ -1010,8 +1024,10 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
which_atu = 0;
}
- if (!which_atu)
+ if (!which_atu) {
+ kfree(res);
return 0;
+ }
switch(which_atu) {
case IOP13XX_INIT_ATU_ATUX:
@@ -1023,17 +1039,13 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
<< IOP13XX_ATUX_PCIXSR_FUNC_NUM;
__raw_writel(pcixsr, IOP13XX_ATUX_PCIXSR);
- res[0].start = IOP13XX_PCIX_LOWER_IO_PA + IOP13XX_PCIX_IO_BUS_OFFSET;
- res[0].end = IOP13XX_PCIX_UPPER_IO_PA;
- res[0].name = "IQ81340 ATUX PCI I/O Space";
- res[0].flags = IORESOURCE_IO;
+ pci_ioremap_io(0, IOP13XX_PCIX_LOWER_IO_PA);
- res[1].start = IOP13XX_PCIX_LOWER_MEM_RA;
- res[1].end = IOP13XX_PCIX_UPPER_MEM_RA;
- res[1].name = "IQ81340 ATUX PCI Memory Space";
- res[1].flags = IORESOURCE_MEM;
+ res->start = IOP13XX_PCIX_LOWER_MEM_RA;
+ res->end = IOP13XX_PCIX_UPPER_MEM_RA;
+ res->name = "IQ81340 ATUX PCI Memory Space";
+ res->flags = IORESOURCE_MEM;
sys->mem_offset = IOP13XX_PCIX_MEM_OFFSET;
- sys->io_offset = IOP13XX_PCIX_LOWER_IO_PA;
break;
case IOP13XX_INIT_ATU_ATUE:
/* Note: the function number field in the PCSR is ro */
@@ -1044,29 +1056,23 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys)
__raw_writel(pcsr, IOP13XX_ATUE_PCSR);
- res[0].start = IOP13XX_PCIE_LOWER_IO_PA + IOP13XX_PCIE_IO_BUS_OFFSET;
- res[0].end = IOP13XX_PCIE_UPPER_IO_PA;
- res[0].name = "IQ81340 ATUE PCI I/O Space";
- res[0].flags = IORESOURCE_IO;
+ pci_ioremap_io(SZ_64K, IOP13XX_PCIE_LOWER_IO_PA);
- res[1].start = IOP13XX_PCIE_LOWER_MEM_RA;
- res[1].end = IOP13XX_PCIE_UPPER_MEM_RA;
- res[1].name = "IQ81340 ATUE PCI Memory Space";
- res[1].flags = IORESOURCE_MEM;
+ res->start = IOP13XX_PCIE_LOWER_MEM_RA;
+ res->end = IOP13XX_PCIE_UPPER_MEM_RA;
+ res->name = "IQ81340 ATUE PCI Memory Space";
+ res->flags = IORESOURCE_MEM;
sys->mem_offset = IOP13XX_PCIE_MEM_OFFSET;
- sys->io_offset = IOP13XX_PCIE_LOWER_IO_PA;
sys->map_irq = iop13xx_pcie_map_irq;
break;
default:
+ kfree(res);
return 0;
}
- request_resource(&ioport_resource, &res[0]);
- request_resource(&iomem_resource, &res[1]);
+ request_resource(&iomem_resource, res);
- sys->resource[0] = &res[0];
- sys->resource[1] = &res[1];
- sys->resource[2] = NULL;
+ pci_add_resource_offset(&sys->resources, res, sys->mem_offset);
return 1;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-12 22:34:02 +0000