Index: head/sys/arm/broadcom/bcm2835/bcm2835_vcbus.c =================================================================== --- head/sys/arm/broadcom/bcm2835/bcm2835_vcbus.c (revision 355015) +++ head/sys/arm/broadcom/bcm2835/bcm2835_vcbus.c (revision 355016) @@ -1,263 +1,268 @@ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2019 Kyle Evans * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include __FBSDID("$FreeBSD$"); /* * This file contains facilities for runtime determination of address space * mappings for use in DMA/mailbox interactions. This is only used for the * arm64 SoC because the 32-bit SoC used the same mappings. */ #if defined (__aarch64__) #include "opt_soc.h" #endif #include #include #include #include #include #include #include /* * This structure describes mappings that need to take place when transforming * ARM core addresses into vcbus addresses for use with the DMA/mailbox * interfaces. Currently, we only deal with peripheral/SDRAM address spaces * here. * * The SDRAM address space is consistently mapped starting at 0 and extends to * the size of the installed SDRAM. * * Peripherals are mapped further up at spots that vary per-SOC. */ struct bcm283x_memory_mapping { vm_paddr_t armc_start; vm_paddr_t armc_size; vm_paddr_t vcbus_start; }; #if defined(SOC_BCM2835) || defined(SOC_BCM2836) static struct bcm283x_memory_mapping bcm2835_memmap[] = { { /* SDRAM */ .armc_start = 0x00000000, .armc_size = BCM2835_ARM_IO_BASE, .vcbus_start = BCM2835_VCBUS_SDRAM_BASE, }, { /* Peripherals */ .armc_start = BCM2835_ARM_IO_BASE, .armc_size = BCM28XX_ARM_IO_SIZE, .vcbus_start = BCM2835_VCBUS_IO_BASE, }, { 0, 0, 0 }, }; #endif #ifdef SOC_BRCM_BCM2837 static struct bcm283x_memory_mapping bcm2837_memmap[] = { { /* SDRAM */ .armc_start = 0x00000000, .armc_size = BCM2837_ARM_IO_BASE, .vcbus_start = BCM2837_VCBUS_SDRAM_BASE, }, { /* Peripherals */ .armc_start = BCM2837_ARM_IO_BASE, .armc_size = BCM28XX_ARM_IO_SIZE, .vcbus_start = BCM2837_VCBUS_IO_BASE, }, { 0, 0, 0 }, }; #endif #ifdef SOC_BRCM_BCM2838 /* * The BCM2838 supports up to 4GB of SDRAM, but unfortunately we can still only * map the first 1GB into the "legacy master view" (vcbus) address space. Thus, * peripherals can still only access the lower end of SDRAM. For this reason, * we also capture the main-peripheral busdma restriction below. */ static struct bcm283x_memory_mapping bcm2838_memmap[] = { { /* SDRAM */ .armc_start = 0x00000000, .armc_size = 0x40000000, .vcbus_start = BCM2838_VCBUS_SDRAM_BASE, }, { /* Main peripherals */ .armc_start = BCM2838_ARM_IO_BASE, .armc_size = BCM28XX_ARM_IO_SIZE, .vcbus_start = BCM2838_VCBUS_IO_BASE, }, { 0, 0, 0 }, }; #endif static struct bcm283x_memory_soc_cfg { struct bcm283x_memory_mapping *memmap; const char *soc_compat; bus_addr_t busdma_lowaddr; } bcm283x_memory_configs[] = { #ifdef SOC_BCM2835 { .memmap = bcm2835_memmap, .soc_compat = "brcm,bcm2835", .busdma_lowaddr = BUS_SPACE_MAXADDR_32BIT, }, #endif #ifdef SOC_BCM2836 { .memmap = bcm2835_memmap, .soc_compat = "brcm,bcm2836", .busdma_lowaddr = BUS_SPACE_MAXADDR_32BIT, }, #endif #ifdef SOC_BRCM_BCM2837 { .memmap = bcm2837_memmap, .soc_compat = "brcm,bcm2837", .busdma_lowaddr = BUS_SPACE_MAXADDR_32BIT, }, #endif #ifdef SOC_BRCM_BCM2838 { .memmap = bcm2838_memmap, + .soc_compat = "brcm,bcm2711", + .busdma_lowaddr = BCM2838_PERIPH_MAXADDR, + }, + { + .memmap = bcm2838_memmap, .soc_compat = "brcm,bcm2838", .busdma_lowaddr = BCM2838_PERIPH_MAXADDR, }, #endif }; static struct bcm283x_memory_soc_cfg *booted_soc_memcfg; static struct bcm283x_memory_soc_cfg * bcm283x_get_current_memcfg(void) { phandle_t root; int i; /* We'll cache it once we decide, because it won't change per-boot. */ if (booted_soc_memcfg != NULL) return (booted_soc_memcfg); KASSERT(nitems(bcm283x_memory_configs) != 0, ("No SOC memory configurations enabled!")); root = OF_finddevice("/"); for (i = 0; i < nitems(bcm283x_memory_configs); ++i) { booted_soc_memcfg = &bcm283x_memory_configs[i]; printf("Checking root against %s\n", booted_soc_memcfg->soc_compat); if (ofw_bus_node_is_compatible(root, booted_soc_memcfg->soc_compat)) return (booted_soc_memcfg); } /* * The kernel doesn't fit the board; we can't really make a reasonable * guess, as these SOC are different enough that something will blow up * later. */ panic("No suitable SOC memory configuration found."); } #define BCM283X_MEMMAP_ISTERM(ent) \ ((ent)->armc_start == 0 && (ent)->armc_size == 0 && \ (ent)->vcbus_start == 0) vm_paddr_t bcm283x_armc_to_vcbus(vm_paddr_t pa) { struct bcm283x_memory_soc_cfg *cfg; struct bcm283x_memory_mapping *map, *ment; /* Guaranteed not NULL if we haven't panicked yet. */ cfg = bcm283x_get_current_memcfg(); map = cfg->memmap; for (ment = map; !BCM283X_MEMMAP_ISTERM(ment); ++ment) { if (pa >= ment->armc_start && pa < ment->armc_start + ment->armc_size) { return (pa - ment->armc_start) + ment->vcbus_start; } } /* * Assume 1:1 mapping for anything else, but complain about it on * verbose boots. */ if (bootverbose) printf("bcm283x_vcbus: No armc -> vcbus mapping found: %jx\n", (uintmax_t)pa); return (pa); } vm_paddr_t bcm283x_vcbus_to_armc(vm_paddr_t vca) { struct bcm283x_memory_soc_cfg *cfg; struct bcm283x_memory_mapping *map, *ment; /* Guaranteed not NULL if we haven't panicked yet. */ cfg = bcm283x_get_current_memcfg(); map = cfg->memmap; for (ment = map; !BCM283X_MEMMAP_ISTERM(ment); ++ment) { if (vca >= ment->vcbus_start && vca < ment->vcbus_start + ment->armc_size) { return (vca - ment->vcbus_start) + ment->armc_start; } } /* * Assume 1:1 mapping for anything else, but complain about it on * verbose boots. */ if (bootverbose) printf("bcm283x_vcbus: No vcbus -> armc mapping found: %jx\n", (uintmax_t)vca); return (vca); } bus_addr_t bcm283x_dmabus_peripheral_lowaddr(void) { struct bcm283x_memory_soc_cfg *cfg; cfg = bcm283x_get_current_memcfg(); return (cfg->busdma_lowaddr); }