| /* |
| <:copyright-BRCM:2016:DUAL/GPL:standard |
| |
| Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| All Rights Reserved |
| |
| Unless you and Broadcom execute a separate written software license |
| agreement governing use of this software, this software is licensed |
| to you under the terms of the GNU General Public License version 2 |
| (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| with the following added to such license: |
| |
| As a special exception, the copyright holders of this software give |
| you permission to link this software with independent modules, and |
| to copy and distribute the resulting executable under terms of your |
| choice, provided that you also meet, for each linked independent |
| module, the terms and conditions of the license of that module. |
| An independent module is a module which is not derived from this |
| software. The special exception does not apply to any modifications |
| of the software. |
| |
| Not withstanding the above, under no circumstances may you combine |
| this software in any way with any other Broadcom software provided |
| under a license other than the GPL, without Broadcom's express prior |
| written consent. |
| |
| :> |
| */ |
| |
| /* |
| * bcmolt_board_selector.c |
| */ |
| |
| #include <linux/fs.h> |
| #include "bcmolt_board_selector.h" |
| |
| static bus_devfn_devid bus_devfn_devid_table_svk4[] = { |
| { 5, 0, 0}, |
| { 3, 0, 1}, |
| {-1,-1,-1}, |
| }; |
| |
| static bus_devfn_devid bus_devfn_devid_table_svk1_3[] = { |
| { 3, 0, 0}, |
| {-1,-1,-1}, |
| }; |
| |
| #define SVK4_IDENT_FILE "/etc/svk4" |
| |
| #define PCIE_DEVICE_RESCAN_FILE_SVK4 "/sys/bus/pci/devices/0000:02:00.0/rescan" |
| #define PCIE_DEVICE_RESCAN_FILE_SVK1_3 "/sys/bus/pci/devices/0000:02:01.0/rescan" |
| |
| /* Minimum required FPGA version for standalone mode (host / embedded processors running disconnected). */ |
| #define FPGA_VER_FOR_STANDALONE 7 |
| |
| static struct file *file_open(const char *path, int flags) |
| { |
| struct file *fd = NULL; |
| mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH; |
| |
| fd = filp_open(path, flags, mode); |
| if(IS_ERR(fd)) |
| return NULL; |
| return fd; |
| } |
| |
| static void file_close(struct file *file) |
| { |
| filp_close(file, NULL); |
| } |
| |
| static bcmos_bool can_read_file(const char *path) |
| { |
| struct file *fd = file_open(path, O_RDONLY); |
| if ((fd == NULL) || (fd == (void *)-ENOENT)) /* -ENOENT; No such file or directory */ |
| { |
| return BCMOS_FALSE; |
| } |
| |
| file_close(fd); |
| return BCMOS_TRUE; |
| } |
| |
| static bcmos_bool board_is_svk4(void) |
| { |
| return can_read_file(SVK4_IDENT_FILE); |
| } |
| |
| /* Get PCI rescan string. It is used in linux to rescan PCIe bus */ |
| const char *bcmolt_board_pci_rescan_string_get(void) |
| { |
| return board_is_svk4() ? PCIE_DEVICE_RESCAN_FILE_SVK4 : PCIE_DEVICE_RESCAN_FILE_SVK1_3; |
| } |
| |
| /* Get bus, devfn --> dev_id mapping table. |
| * The table is terminated by row with bus=-1,devfn=-1 |
| */ |
| const bus_devfn_devid *bcmolt_board_pci_map_table_get(void) |
| { |
| return board_is_svk4() ? bus_devfn_devid_table_svk4 : bus_devfn_devid_table_svk1_3; |
| } |
| |
| /* Return TRUE if board supports Maple-standalone mode */ |
| bcmos_bool bcmolt_board_supports_standalone(uint32_t version) |
| { |
| return board_is_svk4() || version >= FPGA_VER_FOR_STANDALONE; |
| } |
| |
| /* Returns number of maple devices on the board */ |
| uint8_t bcmolt_board_num_maple_devices(void) |
| { |
| return board_is_svk4() ? 2 : 1; |
| } |