/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * PCI nexus driver tunables */ #include #include #include #include #include #include #include /*LINTLIBRARY*/ /* * Used to disallow bypass requests for tomatillos ver <= 2.3 * 0 allow bypass, 1 disallow it. errata #75 */ uint_t tomatillo_disallow_bypass = 0; /* * The three variables below enable a workround for * tomatillo's micro TLB bug. errata #82 */ uint_t tm_mtlb_maxpgs = 20; uint_t tm_mtlb_gc = 0; /* for garbage collection */ uint_t tm_mtlb_gc_manual = 0; /* for manual tuning */ /* * By initializing pci_interrupt_priorities_property to 1, the priority * level of the interrupt handler for a PCI device can be defined via an * "interrupt-priorities" property. This property is an array of integer * values that have a one to one mapping the the "interrupts" property. * For example, if a device's "interrupts" property was (1, 2) and its * "interrupt-priorities" value was (5, 12), the handler for the first * interrupt would run at cpu priority 5 and the second at priority 12. * This would override the drivers standard mechanism for assigning * priorities to interrupt handlers. */ uint_t pci_interrupt_priorities_property = 1; /* * By initializing pci_config_space_size_zero to 1, the driver will * tolerate mapping requests for configuration space "reg" entries whose * size is not zero. */ uint_t pci_config_space_size_zero = 1; int pci_dvma_sync_before_unmap = 0; int pci_sync_lock = 0; int tomatillo_store_store_wrka = 0; uint32_t pci_spurintr_duration = 60000000; /* One minute */ uint64_t pci_spurintr_msgs = PCI_SPURINTR_MSG_DEFAULT; /* * The variable controls the default setting of the command register * for pci devices. See init_child() for details. * * This flags also controls the setting of bits in the bridge control * register pci to pci bridges. See init_child() for details. */ ushort_t pci_command_default = PCI_COMM_SERR_ENABLE | PCI_COMM_WAIT_CYC_ENAB | PCI_COMM_PARITY_DETECT | PCI_COMM_ME | PCI_COMM_MAE | PCI_COMM_IO; /* * The following variable enables a workaround for the following obp bug: * * 1234181 - obp should set latency timer registers in pci * configuration header * * Until this bug gets fixed in the obp, the following workaround should * be enabled. */ uint_t pci_set_latency_timer_register = 1; /* * The following variable enables a workaround for an obp bug to be * submitted. A bug requesting a workaround fof this problem has * been filed: * * 1235094 - need workarounds on positron nexus drivers to set cache * line size registers * * Until this bug gets fixed in the obp, the following workaround should * be enabled. */ uint_t pci_set_cache_line_size_register = 1; /* * The following driver parameters are defined as variables to allow * patching for debugging and tuning. Flags that can be set on a per * PBM basis are bit fields where the PBM device instance number maps * to the bit position. */ #ifdef DEBUG uint64_t pci_debug_flags = 0; uint_t pci_warn_pp0 = 0; #endif uint_t pci_disable_pass1_workarounds = 0; uint_t pci_disable_pass2_workarounds = 0; uint_t pci_disable_pass3_workarounds = 0; uint_t pci_disable_plus_workarounds = 0; uint_t pci_disable_default_workarounds = 0; uint_t ecc_error_intr_enable = 1; uint_t pci_sbh_error_intr_enable = (uint_t)-1; uint_t pci_mmu_error_intr_enable = (uint_t)-1; uint_t pci_stream_buf_enable = (uint_t)-1; uint_t pci_stream_buf_exists = 1; uint_t pci_rerun_disable = 0; uint_t pci_enable_retry_arb = (uint_t)-1; uint_t pci_bus_parking_enable = (uint_t)-1; uint_t pci_error_intr_enable = (uint_t)-1; uint_t pci_retry_disable = 0; uint_t pci_retry_enable = 0; uint_t pci_dwsync_disable = 0; uint_t pci_intsync_disable = 0; uint_t pci_b_arb_enable = 0xf; uint_t pci_a_arb_enable = 0xf; uint_t pci_ecc_afsr_retries = 100; /* XXX - what's a good value? */ uint_t pci_intr_retry_intv = 5; /* for interrupt retry reg */ uint8_t pci_latency_timer = 0x40; /* for pci latency timer reg */ uint_t pci_panic_on_sbh_errors = 0; uint_t pci_panic_on_fatal_errors = 1; /* should be 1 at beta */ uint_t pci_thermal_intr_fatal = 1; /* thermal interrupts fatal */ uint_t pci_buserr_interrupt = 1; /* safari buserr interrupt */ uint_t pci_set_dto_value = 0; /* overwrite the prom settings? */ uint_t pci_dto_value = 1; /* schizo consistent buf timeout PTO */ uint_t pci_lock_sbuf = 0; uint_t pci_use_contexts = 1; uint_t pci_sc_use_contexts = 1; uint_t pci_context_minpages = 2; uint_t pci_ctx_flush_warn = CE_IGNORE; uint_t pci_ctx_unsuccess_count = 0; /* unsuccessful ctx flush count */ uint_t pci_ctx_no_active_flush = 0; /* cannot handle active ctx flush */ uint_t pci_ctx_no_compat = 0; /* maintain compatibility */ uint64_t pci_perr_enable = -1ull; uint64_t pci_serr_enable = -1ull; uint64_t pci_perr_fatal = -1ull; uint64_t pci_serr_fatal = -1ull; hrtime_t pci_intrpend_timeout = 5ll * NANOSEC; /* 5 seconds in nanoseconds */ hrtime_t pci_sync_buf_timeout = 1ll * NANOSEC; /* 1 second in nanoseconds */ hrtime_t pci_cdma_intr_timeout = 1ll * NANOSEC; /* consistent sync trigger */ uint32_t pci_cdma_intr_count = 15; /* num of pci_cdma_intr_timeout cycles */ uint32_t pci_dto_fault_warn = CE_WARN; /* set to CE_IGNORE for no messages */ uint64_t pci_dto_intr_enable = 0; uint64_t pci_dto_count = 0; uint64_t pci_errtrig_pa = 0x0; /* * The following flag controls behavior of the ino handler routine * when multiple interrupts are attached to a single ino. Typically * this case would occur for the ino's assigned to the PCI bus slots * with multi-function devices or bus bridges. * * Setting the flag to zero causes the ino handler routine to return * after finding the first interrupt handler to claim the interrupt. * * Setting the flag to non-zero causes the ino handler routine to * return after making one complete pass through the interrupt * handlers. */ uint_t pci_check_all_handlers = 1; /* * The following value is the number of consecutive unclaimed interrupts that * will be tolerated for a particular ino_p before the interrupt is deemed to * be jabbering and is blocked. */ uint_t pci_unclaimed_intr_max = 20; ulong_t pci_iommu_dvma_end = 0xfffffffful; uint_t pci_lock_tlb = 0; uint64_t pci_dvma_debug_on = 0; uint64_t pci_dvma_debug_off = 0; uint32_t pci_dvma_debug_rec = 512; /* * dvma address space allocation cache variables */ uint_t pci_dvma_page_cache_entries = 0x200; /* # of chunks (1 << bits) */ uint_t pci_dvma_page_cache_clustsz = 0x8; /* # of pages per chunk */ #ifdef PCI_DMA_PROF uint_t pci_dvmaft_npages = 0; /* FT fail due npages */ uint_t pci_dvmaft_limit = 0; /* FT fail due limits */ uint_t pci_dvmaft_free = 0; /* FT free */ uint_t pci_dvmaft_success = 0; /* FT success */ uint_t pci_dvmaft_exhaust = 0; /* FT vmem fallback */ uint_t pci_dvma_vmem_alloc = 0; /* vmem alloc */ uint_t pci_dvma_vmem_xalloc = 0; /* vmem xalloc */ uint_t pci_dvma_vmem_xfree = 0; /* vmem xfree */ uint_t pci_dvma_vmem_free = 0; /* vmem free */ #endif uint_t pci_disable_fdvma = 0; uint_t pci_iommu_ctx_lock_failure = 0; /* * This flag preserves prom iommu settings by copying prom TSB entries * to corresponding kernel TSB entry locations. It should be removed * after the interface properties from obp have become default. */ uint_t pci_preserve_iommu_tsb = 1; /* * memory callback list id callback list for kmem_alloc failure clients */ uintptr_t pci_kmem_clid = 0; /* * Perform a consistent-mode sync/flush during interrupt. */ uint_t pci_intr_dma_sync = 0; /* * This flag is used to enable max prefetch streaming cache mode * feature of XMITS. */ uint_t pci_xmits_sc_max_prf = 0; /* * This flag is used to enable pcix error reporting in XMITS. */ uint64_t xmits_error_intr_enable = -1ull; /* * Enable parity error recovery for xmits */ uint_t xmits_perr_recov_int_enable = 0; /* * This flag controls whether or not DVMA remap support is * enabled (currently, Schizo/XMITS only). */ int pci_dvma_remap_enabled = 0; /* * Serialize PCI relocations, since they are time critical. */ kthread_t *pci_reloc_thread = NULL; kmutex_t pci_reloc_mutex; kcondvar_t pci_reloc_cv; int pci_reloc_presuspend = 0; int pci_reloc_suspend = 0; id_t pci_dvma_cbid; id_t pci_fast_dvma_cbid; int pci_dma_panic_on_leak = 0; /* * Set Outstanding Maximum Split Transactions. Legal settings are: * 0 = 1 Outstanding Transacation, 1 = 2, 2 = 3, 3 = 4, 4 = 8, 5 = 12, * 6 = 16, 7 = 32. */ uint_t xmits_max_transactions = 0; /* * Set Max Memory Read Byte Count. Legal settings are: * 0 = 512 Max Memory Read Bytes, 1 = 1024, 2 = 2048, 3 = 4096. */ uint_t xmits_max_read_bytes = 0; /* * Bits 15:0 increase the maximum PIO retries allowed by XMITS. */ uint_t xmits_upper_retry_counter = 0x3E8;