diff options
Diffstat (limited to 'payloads/libpayload')
| -rw-r--r-- | payloads/libpayload/Kconfig | 10 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/Makefile.inc | 8 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/pci_io_ops.c | 67 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/pci_map_bus_ops.c | 46 | ||||
| -rw-r--r-- | payloads/libpayload/drivers/pci_ops.c (renamed from payloads/libpayload/drivers/pci.c) | 36 | ||||
| -rw-r--r-- | payloads/libpayload/include/pci.h | 16 |
6 files changed, 138 insertions, 45 deletions
diff --git a/payloads/libpayload/Kconfig b/payloads/libpayload/Kconfig index 4f8896aa6e..7540c674a2 100644 --- a/payloads/libpayload/Kconfig +++ b/payloads/libpayload/Kconfig @@ -404,8 +404,14 @@ menu "Drivers" config PCI bool "Support for PCI devices" - depends on ARCH_X86 # for now - default y + default y if ARCH_X86 + default n + +config PCI_IO_OPS + bool "Support for PCI devices with port IO" + depends on PCI && IO_ADDRESS_SPACE + default y if ARCH_X86 + default n config NVRAM bool "Support for reading/writing NVRAM bytes" diff --git a/payloads/libpayload/drivers/Makefile.inc b/payloads/libpayload/drivers/Makefile.inc index 41fda5be1e..b2a91f6610 100644 --- a/payloads/libpayload/drivers/Makefile.inc +++ b/payloads/libpayload/drivers/Makefile.inc @@ -28,7 +28,13 @@ ## SUCH DAMAGE. ## -libc-$(CONFIG_LP_PCI) += pci.c +libc-$(CONFIG_LP_PCI) += pci_ops.c + +ifeq ($(CONFIG_LP_PCI_IO_OPS),y) +libc-$(CONFIG_LP_PCI) += pci_io_ops.c +else +libc-$(CONFIG_LP_PCI) += pci_map_bus_ops.c +endif libc-$(CONFIG_LP_SPEAKER) += speaker.c diff --git a/payloads/libpayload/drivers/pci_io_ops.c b/payloads/libpayload/drivers/pci_io_ops.c new file mode 100644 index 0000000000..f6506a31ab --- /dev/null +++ b/payloads/libpayload/drivers/pci_io_ops.c @@ -0,0 +1,67 @@ +/* + * + * Copyright (C) 2008 Advanced Micro Devices, Inc. + * Copyright (C) 2008 coresystems GmbH + * + * 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. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * 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. + */ + +#include <libpayload.h> +#include <pci.h> + +u8 pci_read_config8(pcidev_t dev, u16 reg) +{ + outl(dev | (reg & ~3), 0xCF8); + return inb(0xCFC + (reg & 3)); +} + +u16 pci_read_config16(pcidev_t dev, u16 reg) +{ + outl(dev | (reg & ~3), 0xCF8); + return inw(0xCFC + (reg & 3)); +} + +u32 pci_read_config32(pcidev_t dev, u16 reg) +{ + outl(dev | (reg & ~3), 0xCF8); + return inl(0xCFC + (reg & 3)); +} + +void pci_write_config8(pcidev_t dev, u16 reg, u8 val) +{ + outl(dev | (reg & ~3), 0xCF8); + outb(val, 0xCFC + (reg & 3)); +} + +void pci_write_config16(pcidev_t dev, u16 reg, u16 val) +{ + outl(dev | (reg & ~3), 0xCF8); + outw(val, 0xCFC + (reg & 3)); +} + +void pci_write_config32(pcidev_t dev, u16 reg, u32 val) +{ + outl(dev | (reg & ~3), 0xCF8); + outl(val, 0xCFC + (reg & 3)); +} diff --git a/payloads/libpayload/drivers/pci_map_bus_ops.c b/payloads/libpayload/drivers/pci_map_bus_ops.c new file mode 100644 index 0000000000..2b4f9d159a --- /dev/null +++ b/payloads/libpayload/drivers/pci_map_bus_ops.c @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <libpayload.h> +#include <pci.h> + +u8 pci_read_config8(pcidev_t dev, u16 reg) +{ + uintptr_t cfg_base = pci_map_bus(dev); + + return read8((void *)(cfg_base | reg)); +} + +u16 pci_read_config16(pcidev_t dev, u16 reg) +{ + uintptr_t cfg_base = pci_map_bus(dev); + + return read16((void *)(cfg_base | (reg & ~1))); +} + +u32 pci_read_config32(pcidev_t dev, u16 reg) +{ + uintptr_t cfg_base = pci_map_bus(dev); + + return read32((void *)(cfg_base | (reg & ~3))); +} + +void pci_write_config8(pcidev_t dev, u16 reg, u8 val) +{ + uintptr_t cfg_base = pci_map_bus(dev); + + write8((void *)(cfg_base | reg), val); +} + +void pci_write_config16(pcidev_t dev, u16 reg, u16 val) +{ + uintptr_t cfg_base = pci_map_bus(dev); + + write16((void *)(cfg_base | (reg & ~1)), val); +} + +void pci_write_config32(pcidev_t dev, u16 reg, u32 val) +{ + uintptr_t cfg_base = pci_map_bus(dev); + + write32((void *)(cfg_base | (reg & ~3)), val); +} diff --git a/payloads/libpayload/drivers/pci.c b/payloads/libpayload/drivers/pci_ops.c index 90e9220d0a..79c3bc0781 100644 --- a/payloads/libpayload/drivers/pci.c +++ b/payloads/libpayload/drivers/pci_ops.c @@ -30,42 +30,6 @@ #include <libpayload.h> #include <pci.h> -u8 pci_read_config8(pcidev_t device, u16 reg) -{ - outl(device | (reg & ~3), 0xCF8); - return inb(0xCFC + (reg & 3)); -} - -u16 pci_read_config16(pcidev_t device, u16 reg) -{ - outl(device | (reg & ~3), 0xCF8); - return inw(0xCFC + (reg & 3)); -} - -u32 pci_read_config32(pcidev_t device, u16 reg) -{ - outl(device | (reg & ~3), 0xCF8); - return inl(0xCFC + (reg & 3)); -} - -void pci_write_config8(pcidev_t device, u16 reg, u8 val) -{ - outl(device | (reg & ~3), 0xCF8); - outb(val, 0xCFC + (reg & 3)); -} - -void pci_write_config16(pcidev_t device, u16 reg, u16 val) -{ - outl(device | (reg & ~3), 0xCF8); - outw(val, 0xCFC + (reg & 3)); -} - -void pci_write_config32(pcidev_t device, u16 reg, u32 val) -{ - outl(device | (reg & ~3), 0xCF8); - outl(val, 0xCFC + (reg & 3)); -} - static int find_on_bus(int bus, unsigned short vid, unsigned short did, pcidev_t * dev) { diff --git a/payloads/libpayload/include/pci.h b/payloads/libpayload/include/pci.h index ce5081c48b..d78b8cab5e 100644 --- a/payloads/libpayload/include/pci.h +++ b/payloads/libpayload/include/pci.h @@ -31,6 +31,8 @@ #define _PCI_H #include <arch/types.h> +#include <stdint.h> + typedef u32 pcidev_t; /* Device config space registers. */ @@ -100,13 +102,15 @@ typedef u32 pcidev_t; #define PCI_SLOT(_d) ((_d >> 11) & 0x1f) #define PCI_FUNC(_d) ((_d >> 8) & 0x7) -u8 pci_read_config8(u32 device, u16 reg); -u16 pci_read_config16(u32 device, u16 reg); -u32 pci_read_config32(u32 device, u16 reg); +uintptr_t pci_map_bus(pcidev_t dev); + +u8 pci_read_config8(pcidev_t dev, u16 reg); +u16 pci_read_config16(pcidev_t dev, u16 reg); +u32 pci_read_config32(pcidev_t dev, u16 reg); -void pci_write_config8(u32 device, u16 reg, u8 val); -void pci_write_config16(u32 device, u16 reg, u16 val); -void pci_write_config32(u32 device, u16 reg, u32 val); +void pci_write_config8(pcidev_t dev, u16 reg, u8 val); +void pci_write_config16(pcidev_t dev, u16 reg, u16 val); +void pci_write_config32(pcidev_t dev, u16 reg, u32 val); int pci_find_device(u16 vid, u16 did, pcidev_t *dev); u32 pci_read_resource(pcidev_t dev, int bar); |