4b6ba8aacb
There are two identical implementations of of_get_mac_address(), one
each in arch/powerpc/kernel/prom_parse.c and
arch/microblaze/kernel/prom_parse.c. Move this function to a new
common file of_net.{c,h} and adjust all the callers to include the new
header.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
[grant.likely@secretlab.ca: protect header with #ifdef]
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
#undef DEBUG
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/pci_regs.h>
|
|
#include <linux/module.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/of_address.h>
|
|
#include <asm/prom.h>
|
|
#include <asm/pci-bridge.h>
|
|
|
|
#ifdef CONFIG_PCI
|
|
int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq)
|
|
{
|
|
struct device_node *dn, *ppnode;
|
|
struct pci_dev *ppdev;
|
|
u32 lspec;
|
|
u32 laddr[3];
|
|
u8 pin;
|
|
int rc;
|
|
|
|
/* Check if we have a device node, if yes, fallback to standard OF
|
|
* parsing
|
|
*/
|
|
dn = pci_device_to_OF_node(pdev);
|
|
if (dn)
|
|
return of_irq_map_one(dn, 0, out_irq);
|
|
|
|
/* Ok, we don't, time to have fun. Let's start by building up an
|
|
* interrupt spec. we assume #interrupt-cells is 1, which is standard
|
|
* for PCI. If you do different, then don't use that routine.
|
|
*/
|
|
rc = pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pin);
|
|
if (rc != 0)
|
|
return rc;
|
|
/* No pin, exit */
|
|
if (pin == 0)
|
|
return -ENODEV;
|
|
|
|
/* Now we walk up the PCI tree */
|
|
lspec = pin;
|
|
for (;;) {
|
|
/* Get the pci_dev of our parent */
|
|
ppdev = pdev->bus->self;
|
|
|
|
/* Ouch, it's a host bridge... */
|
|
if (ppdev == NULL) {
|
|
struct pci_controller *host;
|
|
host = pci_bus_to_host(pdev->bus);
|
|
ppnode = host ? host->dn : NULL;
|
|
/* No node for host bridge ? give up */
|
|
if (ppnode == NULL)
|
|
return -EINVAL;
|
|
} else
|
|
/* We found a P2P bridge, check if it has a node */
|
|
ppnode = pci_device_to_OF_node(ppdev);
|
|
|
|
/* Ok, we have found a parent with a device-node, hand over to
|
|
* the OF parsing code.
|
|
* We build a unit address from the linux device to be used for
|
|
* resolution. Note that we use the linux bus number which may
|
|
* not match your firmware bus numbering.
|
|
* Fortunately, in most cases, interrupt-map-mask doesn't
|
|
* include the bus number as part of the matching.
|
|
* You should still be careful about that though if you intend
|
|
* to rely on this function (you ship a firmware that doesn't
|
|
* create device nodes for all PCI devices).
|
|
*/
|
|
if (ppnode)
|
|
break;
|
|
|
|
/* We can only get here if we hit a P2P bridge with no node,
|
|
* let's do standard swizzling and try again
|
|
*/
|
|
lspec = pci_swizzle_interrupt_pin(pdev, lspec);
|
|
pdev = ppdev;
|
|
}
|
|
|
|
laddr[0] = (pdev->bus->number << 16)
|
|
| (pdev->devfn << 8);
|
|
laddr[1] = laddr[2] = 0;
|
|
return of_irq_map_raw(ppnode, &lspec, 1, laddr, out_irq);
|
|
}
|
|
EXPORT_SYMBOL_GPL(of_irq_map_pci);
|
|
#endif /* CONFIG_PCI */
|
|
|
|
void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
|
|
unsigned long *busno, unsigned long *phys, unsigned long *size)
|
|
{
|
|
const u32 *dma_window;
|
|
u32 cells;
|
|
const unsigned char *prop;
|
|
|
|
dma_window = dma_window_prop;
|
|
|
|
/* busno is always one cell */
|
|
*busno = *(dma_window++);
|
|
|
|
prop = of_get_property(dn, "ibm,#dma-address-cells", NULL);
|
|
if (!prop)
|
|
prop = of_get_property(dn, "#address-cells", NULL);
|
|
|
|
cells = prop ? *(u32 *)prop : of_n_addr_cells(dn);
|
|
*phys = of_read_number(dma_window, cells);
|
|
|
|
dma_window += cells;
|
|
|
|
prop = of_get_property(dn, "ibm,#dma-size-cells", NULL);
|
|
cells = prop ? *(u32 *)prop : of_n_size_cells(dn);
|
|
*size = of_read_number(dma_window, cells);
|
|
}
|