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parisc: Fix interrupt routing for C8000 serial ports

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We can't use dev->mod_index for selecting the interrupt routing entry,
because it's not an index into interrupt routing table. It will be even
wrong on a machine with 2 CPUs (4 cores). But all needed information is
contained in the PAT entries for the serial ports. mod[0] contains the
iosapic address and mod_info has some indications for the interrupt
input (at least it looks like it). This patch implements the searching
for the right iosapic and uses this interrupt input information.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: <stable@vger.kernel.org> # 3.10
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Thomas Bogendoerfer
2013-07-30 02:02:16 +02:00
committed by Helge Deller
parent 5a0ce2dc21
commit dd5e6d6a3d
4 changed files with 32 additions and 13 deletions
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3
arch/parisc/include/asm/parisc-device.h
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@@ -23,6 +23,7 @@ struct parisc_device {
/* generic info returned from pdc_pat_cell_module() */
unsigned long mod_info; /* PAT specific - Misc Module info */
unsigned long pmod_loc; /* physical Module location */
unsigned long mod0;
#endif
u64 dma_mask; /* DMA mask for I/O */
struct device dev;
@@ -61,4 +62,6 @@ parisc_get_drvdata(struct parisc_device *d)
extern struct bus_type parisc_bus_type;
int iosapic_serial_irq(struct parisc_device *dev);
#endif /*_ASM_PARISC_PARISC_DEVICE_H_*/