Changes between Initial Version and Version 1 of peripherals_drivers

Timestamp:

Oct 15, 2014, 12:33:45 PM (11 years ago)

Author:

alain

Comment:

--

peripherals_drivers

@@ +1 @@
+= GIET_VM / Peripherals Drivers =
+
+[[PageOutline]]
+
+The GIET_VM supports two types of peripheral components: '''External peripherals''' are located in one single cluster (called ''cluster_io'', and identified by the ''X_IO,Y_IO'' variables); '''Internal peripherals''' are replicated in all clusters.
+
+Each driver xxx_driver define two low-level functions ''_xxx_get_register()'' and ''_xxx_set_register()''
+to access the peripheral addressable registers. These functions are in charge to compute the peripheral registers addresses, taking into account the peripheral base address, the register index, and the cluster coordinates: 
+
+ * '''External peripherals''': All accesses use virtual addresses if the MMU (Memory management Unit) is activated, or physical addresses if it is not. In this case, the physical address is computed as pbase = SEG_XXX_BASE + cluster_io << 32.
+
+ * '''Internal peripherals''': All accesses use virtual addresses, and the MMU must be activated. The peripheral virtual base address is computed as vbase = SEG_XXX_BASE + cluster_xy * PERI_CLUSTER_INCREMENT. 
+
+The X_IO, Y_IO, and PERI_CLUSTER_INCREMENT variables must be defined in the ''hard_config.h" file.
+
+ === [wiki:bdv_driver     BDV  (Block Device controller)]
+ 
+ === [wiki:cma_driver     CMA (Chained Buffer DMA controller)]
+
+ === [wiki:dma_driver     DMA (Multi-Channels DMA controller)]
+
+ === [wiki:fbf_driver     FBF (Frame Buffer controller)]
+
+ === [wiki:hba_driver     HBA (AHCI Disk controller)]
+
+ === [wiki:icu_driver     ICU (Interrupt controller)]
+
+ === [wiki:iob_driver     IOB (I/O Bridge controller)]
+
+ === [wiki:ioc_driver     IOC (Generic I/O controller)]
+
+ === [wiki:mmc_driver     MMC (Memory Cache controller)]
+
+ === [wiki:nic_driver     NIC (Gigabit Ethernet Network controller)]
+
+ === [wiki:pic_driver     PIC (External Peripherals Interrupt controller)]
+
+ === [wiki:rdk_driver     RDK (RamDisk)]
+
+ === [wiki:sim_driver     SIM (Monitor controller)]
+
+ === [wiki:sdc_driver     SDC (SDC Disk controller)]
+
+ === [wiki:tim_driver     TIM (Multi Timers controller)]
+
+ === [wiki:tty_driver     TTY (Multi Terminals TTY controller)]
+
+ === [wiki:xcu_driver     XCU (Extended Interrupt controller)]