diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/shared/pci/detect_raven_bridge.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/shared/pci/detect_raven_bridge.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/c/src/lib/libbsp/powerpc/shared/pci/detect_raven_bridge.c b/c/src/lib/libbsp/powerpc/shared/pci/detect_raven_bridge.c deleted file mode 100644 index 0a1c04a2e2..0000000000 --- a/c/src/lib/libbsp/powerpc/shared/pci/detect_raven_bridge.c +++ /dev/null @@ -1,197 +0,0 @@ -#include <libcpu/io.h> -#include <libcpu/spr.h> -#include <inttypes.h> - -#include <bsp.h> -#include <bsp/pci.h> -#include <bsp/consoleIo.h> -#include <bsp/residual.h> -#include <bsp/openpic.h> -#include <bsp/irq.h> - -#include <rtems/bspIo.h> -#include <libcpu/cpuIdent.h> - -#define SHOW_RAVEN_SETTINGS - -#define RAVEN_MPIC_IOSPACE_ENABLE 0x0001 -#define RAVEN_MPIC_MEMSPACE_ENABLE 0x0002 -#define RAVEN_MASTER_ENABLE 0x0004 -#define RAVEN_PARITY_CHECK_ENABLE 0x0040 -#define RAVEN_SYSTEM_ERROR_ENABLE 0x0100 -#define RAVEN_CLEAR_EVENTS_MASK 0xf9000000 - -#define RAVEN_MPIC_MEREN ((volatile unsigned *)0xfeff0020) -#define RAVEN_MPIC_MERST ((volatile unsigned *)0xfeff0024) -#define MEREN_VAL 0x2f00 - -#define pci BSP_pci_configuration - -extern const pci_config_access_functions pci_direct_functions; -extern const pci_config_access_functions pci_indirect_functions; - -#if defined(mvme2100) -/* FIXME - this should really be in a separate file - the 2100 doesn't - * have a raven chip so there is no point having 2100 code here - */ - -extern unsigned int EUMBBAR; - -void detect_host_bridge(void) -{ - /* - * If the processor is an 8240 or an 8245 then the PIC is built - * in instead of being on the PCI bus. The MVME2100 is using Processor - * Address Map B (CHRP) although the Programmer's Reference Guide says - * it defaults to Map A. - */ - /* We have an EPIC Interrupt Controller */ - OpenPIC = (volatile struct OpenPIC *) (EUMBBAR + BSP_OPEN_PIC_BASE_OFFSET); - pci.pci_functions = &pci_indirect_functions; - pci.pci_config_addr = (volatile unsigned char *) 0xfec00000; - pci.pci_config_data = (volatile unsigned char *) 0xfee00000; -} - -#else - -#if 0 -/* Unfortunately, PCI config space access to empty slots generates - * a 'signalled master abort' condition --> we can't really use - * the machine check interrupt for memory probing unless - * we use probing for PCI scanning also (which would make - * all that code either BSP dependent or requiring yet another - * API, sigh...). - * So for the moment, we just don't use MCP on all mvme2xxx - * boards (using the generic, hostbridge-independent 'clear' - * implementation [generic_clear_hberrs.c]). - */ -/* - * enableMCP: whether to enable MCP checkstop / machine check interrupts - * on the hostbridge and in HID0. - * - * NOTE: HID0 and MEREN are left alone if this flag is 0 - * - * quiet : be silent - * - * RETURNS : raven MERST register contents (lowermost 16 bits), 0 if - * there were no errors - */ -unsigned long -_BSP_clear_hostbridge_errors(int enableMCP, int quiet) -{ -unsigned merst; - - merst = in_be32(RAVEN_MPIC_MERST); - /* write back value to clear status */ - out_be32(RAVEN_MPIC_MERST, merst); - - if (enableMCP) { - if (!quiet) - printk("Enabling MCP generation on hostbridge errors\n"); - out_be32(RAVEN_MPIC_MEREN, MEREN_VAL); - } else { - out_be32(RAVEN_MPIC_MEREN, 0); - if ( !quiet && enableMCP ) { - printk("leaving MCP interrupt disabled\n"); - } - } - return (merst & 0xffff); -} -#endif - -void detect_host_bridge(void) -{ - PPC_DEVICE *hostbridge; - uint32_t id0; - uint32_t tmp; - - /* - * This code assumes that the host bridge is located at - * bus 0, dev 0, func 0 AND that the old pre PCI 2.1 - * standard devices detection mechanism that was used on PC - * (still used in BSD source code) works. - */ - hostbridge=residual_find_device(&residualCopy, PROCESSORDEVICE, NULL, - BridgeController, - PCIBridge, -1, 0); - if (hostbridge) { - if (hostbridge->DeviceId.Interface==PCIBridgeIndirect) { - pci.pci_functions=&pci_indirect_functions; - /* Should be extracted from residual data, - * indeed MPC106 in CHRP mode is different, - * but we should not use residual data in - * this case anyway. - */ - pci.pci_config_addr = ((volatile unsigned char *) - (ptr_mem_map->io_base+0xcf8)); - pci.pci_config_data = ptr_mem_map->io_base+0xcfc; - } else if(hostbridge->DeviceId.Interface==PCIBridgeDirect) { - pci.pci_functions=&pci_direct_functions; - pci.pci_config_data=(unsigned char *) 0x80800000; - } else { - } - } else { - /* Let us try by experimentation at our own risk! */ - pci.pci_functions = &pci_direct_functions; - /* On all direct bridges I know the host bridge itself - * appears as device 0 function 0. - */ - pci_read_config_dword(0, 0, 0, PCI_VENDOR_ID, &id0); - if (id0==~0U) { - pci.pci_functions = &pci_indirect_functions; - pci.pci_config_addr = ((volatile unsigned char*) - (ptr_mem_map->io_base+0xcf8)); - pci.pci_config_data = ((volatile unsigned char*)ptr_mem_map->io_base+0xcfc); - } - /* Here we should check that the host bridge is actually - * present, but if it not, we are in such a desperate - * situation, that we probably can't even tell it. - */ - } - pci_read_config_dword(0, 0, 0, 0, &id0); -#ifdef SHOW_RAVEN_SETTINGS - printk("idreg 0 = 0x%" PRIu32 "\n",id0); -#endif - if((id0 == PCI_VENDOR_ID_MOTOROLA + - (PCI_DEVICE_ID_MOTOROLA_RAVEN<<16)) || - (id0 == PCI_VENDOR_ID_MOTOROLA + - (PCI_DEVICE_ID_MOTOROLA_HAWK<<16))) { - /* - * We have a Raven bridge. We will get information about its settings - */ - pci_read_config_dword(0, 0, 0, PCI_COMMAND, &id0); -#ifdef SHOW_RAVEN_SETTING - printk("RAVEN PCI command register = %x\n",id0); -#endif - id0 |= RAVEN_CLEAR_EVENTS_MASK; - pci_write_config_dword(0, 0, 0, PCI_COMMAND, id0); - pci_read_config_dword(0, 0, 0, PCI_COMMAND, &id0); -#ifdef SHOW_RAVEN_SETTING - printk("After error clearing RAVEN PCI command register = %x\n",id0); -#endif - - if (id0 & RAVEN_MPIC_IOSPACE_ENABLE) { - pci_read_config_dword(0, 0, 0,PCI_BASE_ADDRESS_0, &tmp); -#ifdef SHOW_RAVEN_SETTING - printk("Raven MPIC is accessed via IO Space Access at address : %x\n",(tmp & ~0x1)); -#endif - } - if (id0 & RAVEN_MPIC_MEMSPACE_ENABLE) { - pci_read_config_dword(0, 0, 0,PCI_BASE_ADDRESS_1, &tmp); -#ifdef SHOW_RAVEN_SETTING - printk("Raven MPIC is accessed via memory Space Access at address : %x\n", tmp); -#endif - OpenPIC=(volatile struct OpenPIC *) (tmp + PREP_ISA_MEM_BASE); - printk("OpenPIC found at %p.\n", OpenPIC); - } - } - -#if BSP_PCI_IRQ_NUMBER > 0 - if (OpenPIC == (volatile struct OpenPIC *)0) { - rtems_panic("OpenPic Not found\n"); - } -#endif - -} - -#endif |