Changeset 350 for soft/giet_vm/giet_drivers/ioc_driver.c

Timestamp:

Jun 29, 2014, 12:53:25 PM (10 years ago)

Author:

alain

Message:

Introducing two modifications regarding the locks protecting
exclusive access to BDV and TTY peripherals channels:

• use the giet_lock_t type to have only one lock per cache line.
• store these locks in the seg_kernel_data or in seg_kernel_uncdata, depending on the GIET_NO HARD_CC configuration parameter, to have cacheable locks when it is possible.

File:

• soft/giet_vm/giet_drivers/ioc_driver.c (modified) (2 diffs)

soft/giet_vm/giet_drivers/ioc_driver.c

@@ -183 +183 @@
     unsigned int flags;            // page protection flags
     unsigned int ix2;              // page index in IOMMU PT1 page table
-    unsigned int ppn_first;        // first physical page number for user buffer
+    unsigned int ppn_first = 0;    // first physical page number for user buffer
     unsigned int buf_xaddr = 0;    // user buffer virtual address in IO space (if IOMMU)
     paddr_t      buf_paddr = 0;    // user buffer physical address (if no IOMMU),
@@ -308 +308 @@
 
 #if       ( USE_IOC_BDV )
-
-#if GIET_DEBUG_IOC_DRIVER
-_printf("\n[IOC DEBUG] Calling BDV driver\n");
-#endif
         if (to_mem) error = _bdv_read ( mode, lba, buf_paddr, count);
         else        error = _bdv_write( mode, lba, buf_paddr, count);
-
 #elif ( USE_IOC_SPI )
-
-#if GIET_DEBUG_IOC_DRIVER
-_printf("\n[IOC DEBUG] Calling SPI driver\n");
-#endif
         if (to_mem) error = _sdc_read (mode, lba, buf_paddr, count);
         else        error = _sdc_write(mode, lba, buf_paddr, count);
-
 #elif ( USE_IOC_HBA )
-
-#if GIET_DEBUG_IOC_DRIVER
-_printf("\n[IOC DEBUG] Calling HBA driver\n");
-#endif
         if (to_mem) error = _hba_read (channel, mode, lba, buf_paddr, count);
         else        error = _hba_write(channel, mode, lba, buf_paddr, count);
-
 #elif ( USE_IOC_RDK )
-
-#if GIET_DEBUG_IOC_DRIVER
-_printf("\n[IOC DEBUG] Calling RDK driver\n");
-#endif
         if (to_mem) error = _rdk_read (lba, buf_vaddr, count);
         else        error = _rdk_write(lba, buf_vaddr, count);
-
 #endif