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9 Commits

Author SHA1 Message Date
Sebastian Ott
2245932155 s390/pci: use virtual memory for iommu bitmap 
The bitmap used to mark dma mappings can be quite large on systems
with huge amounts of memory. Use virtual memory for this bitmap.

Suggested-by: Alexander Schmidt <alexschm@de.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2013-08-30 08:57:24 +02:00
Martin Schwidefsky
9389339f28 s390/pci: cleanup function names 
Rename s390pci_xyz to zpci_xxz and set_irq_ctrl to zpci_set_irq_ctrl.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2013-08-22 12:20:03 +02:00
Sebastian Ott
9294896e97 s390/pci: use to_pci_dev 
Use the to_pci_dev macro to fetch a pci_dev from a struct device
pointer.

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2013-06-26 21:09:59 +02:00
Gerald Schaefer
186f50fa56 s390/pci: return correct dma address for offset > PAGE_SIZE 
For offset > PAGE_SIZE, s390_dma_map_pages() will issue a warning
and return a wrong dma address.

This patch removes the warning and fixes the dma return address
calculation.

Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2013-04-23 10:18:16 +02:00
Sebastian Ott
b2a9e87d2c s390/pci: rename instruction wrappers 
Use distinct (and hopefully sane) names for the pci instruction
wrappers.

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2013-04-17 14:07:37 +02:00
Heiko Carstens
b2034e1934 s390/pci: remove dead code 
Get rid of these:

arch/s390/pci/pci_dma.c:16:29: warning: ‘zpci_ioat_dt’ defined but not used [-Wunused-variable]
arch/s390/pci/pci.c:164:12: warning: ‘zpci_store_fib’ defined but not used [-Wunused-function]

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2013-01-08 10:57:04 +01:00
Jan Glauber
d0b0885316 s390/pci: performance statistics and debug infrastructure 
Add support for reading the PCI function measurement block counters
provided by the hypervisor. Add two s390 debug features, one for
critical errors and one for tracing and provide wrappers to log data.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2012-12-14 10:01:17 +01:00
Wei Yongjun
bafff1743f s390/pci: fix potential NULL pointer dereference in dma_free_seg_table() 
The dereference to 'zdev' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2012-12-03 10:44:11 -05:00
Jan Glauber
828b35f60e s390/pci: DMA support 
Add DMA IOMMU support using 4K page table entries. Implement dma_map_ops.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 2012-11-30 17:47:23 +01:00