diff options
Diffstat (limited to 'arch/parisc/kernel/firmware.c')
| -rw-r--r-- | arch/parisc/kernel/firmware.c | 454 |
1 files changed, 375 insertions, 79 deletions
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c index f622a311d04a..042343492a28 100644 --- a/arch/parisc/kernel/firmware.c +++ b/arch/parisc/kernel/firmware.c @@ -1,9 +1,11 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * arch/parisc/kernel/firmware.c - safe PDC access routines * * PDC == Processor Dependent Code * - * See http://www.parisc-linux.org/documentation/index.html + * See PDC documentation at + * https://parisc.wiki.kernel.org/index.php/Technical_Documentation * for documentation describing the entry points and calling * conventions defined below. * @@ -12,12 +14,6 @@ * Copyright 2003 Grant Grundler <grundler parisc-linux org> * Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org> * Copyright 2004,2006 Thibaut VARENE <varenet@parisc-linux.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * */ /* I think it would be in everyone's best interest to follow this @@ -55,7 +51,7 @@ * prumpf 991016 */ -#include <stdarg.h> +#include <linux/stdarg.h> #include <linux/delay.h> #include <linux/init.h> @@ -69,17 +65,25 @@ #include <asm/pdcpat.h> #include <asm/processor.h> /* for boot_cpu_data */ +#if defined(BOOTLOADER) +# undef spin_lock_irqsave +# define spin_lock_irqsave(a, b) { b = 1; } +# undef spin_unlock_irqrestore +# define spin_unlock_irqrestore(a, b) +#else static DEFINE_SPINLOCK(pdc_lock); -extern unsigned long pdc_result[NUM_PDC_RESULT]; -extern unsigned long pdc_result2[NUM_PDC_RESULT]; +#endif + +static unsigned long pdc_result[NUM_PDC_RESULT] __aligned(8); +static unsigned long pdc_result2[NUM_PDC_RESULT] __aligned(8); #ifdef CONFIG_64BIT -#define WIDE_FIRMWARE 0x1 -#define NARROW_FIRMWARE 0x2 +#define WIDE_FIRMWARE PDC_MODEL_OS64 +#define NARROW_FIRMWARE PDC_MODEL_OS32 -/* Firmware needs to be initially set to narrow to determine the +/* Firmware needs to be initially set to narrow to determine the * actual firmware width. */ -int parisc_narrow_firmware __read_mostly = 1; +int parisc_narrow_firmware __ro_after_init = NARROW_FIRMWARE; #endif /* On most currently-supported platforms, IODC I/O calls are 32-bit calls @@ -119,10 +123,10 @@ static unsigned long f_extend(unsigned long address) #ifdef CONFIG_64BIT if(unlikely(parisc_narrow_firmware)) { if((address & 0xff000000) == 0xf0000000) - return 0xf0f0f0f000000000UL | (u32)address; + return (0xfffffff0UL << 32) | (u32)address; if((address & 0xf0000000) == 0xf0000000) - return 0xffffffff00000000UL | (u32)address; + return (0xffffffffUL << 32) | (u32)address; } #endif return address; @@ -130,7 +134,7 @@ static unsigned long f_extend(unsigned long address) /** * convert_to_wide - Convert the return buffer addresses into kernel addresses. - * @address: The return buffer from PDC. + * @addr: The return buffer from PDC. * * This function is used to convert the return buffer addresses retrieved from PDC * into kernel addresses when the PDC address size and kernel address size are @@ -142,8 +146,8 @@ static void convert_to_wide(unsigned long *addr) int i; unsigned int *p = (unsigned int *)addr; - if(unlikely(parisc_narrow_firmware)) { - for(i = 31; i >= 0; --i) + if (unlikely(parisc_narrow_firmware)) { + for (i = (NUM_PDC_RESULT-1); i >= 0; --i) addr[i] = p[i]; } #endif @@ -156,20 +160,27 @@ void set_firmware_width_unlocked(void) ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0); + if (ret < 0) + return; convert_to_wide(pdc_result); if (pdc_result[0] != NARROW_FIRMWARE) parisc_narrow_firmware = 0; } - + /** * set_firmware_width - Determine if the firmware is wide or narrow. - * + * * This function must be called before any pdc_* function that uses the * convert_to_wide function. */ void set_firmware_width(void) { unsigned long flags; + + /* already initialized? */ + if (parisc_narrow_firmware != NARROW_FIRMWARE) + return; + spin_lock_irqsave(&pdc_lock, flags); set_firmware_width_unlocked(); spin_unlock_irqrestore(&pdc_lock, flags); @@ -186,6 +197,8 @@ void set_firmware_width(void) } #endif /*CONFIG_64BIT*/ + +#if !defined(BOOTLOADER) /** * pdc_emergency_unlock - Unlock the linux pdc lock * @@ -223,9 +236,29 @@ int pdc_add_valid(unsigned long address) EXPORT_SYMBOL(pdc_add_valid); /** + * pdc_instr - Get instruction that invokes PDCE_CHECK in HPMC handler. + * @instr: Pointer to variable which will get instruction opcode. + * + * The return value is PDC_OK (0) in case call succeeded. + */ +int __init pdc_instr(unsigned int *instr) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_INSTR, 0UL, __pa(pdc_result)); + convert_to_wide(pdc_result); + *instr = pdc_result[0]; + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} + +/** * pdc_chassis_info - Return chassis information. - * @result: The return buffer. * @chassis_info: The memory buffer address. + * @led_info: The size of the memory buffer address. * @len: The size of the memory buffer address. * * An HVERSION dependent call for returning the chassis information. @@ -249,7 +282,8 @@ int __init pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_inf /** * pdc_pat_chassis_send_log - Sends a PDC PAT CHASSIS log message. - * @retval: -1 on error, 0 on success. Other value are PDC errors + * @state: state of the machine + * @data: value for that state * * Must be correctly formatted or expect system crash */ @@ -272,7 +306,7 @@ int pdc_pat_chassis_send_log(unsigned long state, unsigned long data) /** * pdc_chassis_disp - Updates chassis code - * @retval: -1 on error, 0 on success + * @disp: value to show on display */ int pdc_chassis_disp(unsigned long disp) { @@ -287,8 +321,57 @@ int pdc_chassis_disp(unsigned long disp) } /** + * __pdc_cpu_rendezvous - Stop currently executing CPU and do not return. + */ +int __pdc_cpu_rendezvous(void) +{ + if (is_pdc_pat()) + return mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_RENDEZVOUS); + else + return mem_pdc_call(PDC_PROC, 1, 0); +} + +/** + * pdc_cpu_rendezvous_lock - Lock PDC while transitioning to rendezvous state + */ +void pdc_cpu_rendezvous_lock(void) __acquires(&pdc_lock) +{ + spin_lock(&pdc_lock); +} + +/** + * pdc_cpu_rendezvous_unlock - Unlock PDC after reaching rendezvous state + */ +void pdc_cpu_rendezvous_unlock(void) __releases(&pdc_lock) +{ + spin_unlock(&pdc_lock); +} + +/** + * pdc_pat_get_PDC_entrypoint - Get PDC entry point for current CPU + * @pdc_entry: pointer to where the PDC entry point should be stored + */ +int pdc_pat_get_PDC_entrypoint(unsigned long *pdc_entry) +{ + int retval = 0; + unsigned long flags; + + if (!IS_ENABLED(CONFIG_SMP) || !is_pdc_pat()) { + *pdc_entry = MEM_PDC; + return 0; + } + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PAT_CPU, PDC_PAT_CPU_GET_PDC_ENTRYPOINT, + __pa(pdc_result)); + *pdc_entry = pdc_result[0]; + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} +/** * pdc_chassis_warn - Fetches chassis warnings - * @retval: -1 on error, 0 on success + * @warn: The warning value to be shown */ int pdc_chassis_warn(unsigned long *warn) { @@ -381,7 +464,8 @@ int pdc_system_map_find_mods(struct pdc_system_map_mod_info *pdc_mod_info, unsigned long flags; spin_lock_irqsave(&pdc_lock, flags); - retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), + memcpy(pdc_result2, mod_path, sizeof(*mod_path)); + retval = mem_pdc_call(PDC_SYSTEM_MAP, PDC_FIND_MODULE, __pa(pdc_result), __pa(pdc_result2), mod_index); convert_to_wide(pdc_result); memcpy(pdc_mod_info, pdc_result, sizeof(*pdc_mod_info)); @@ -440,20 +524,21 @@ int pdc_model_info(struct pdc_model *model) /** * pdc_model_sysmodel - Get the system model name. + * @os_id: The operating system ID asked for (an OS_ID_* value) * @name: A char array of at least 81 characters. * * Get system model name from PDC ROM (e.g. 9000/715 or 9000/778/B160L). * Using OS_ID_HPUX will return the equivalent of the 'modelname' command * on HP/UX. */ -int pdc_model_sysmodel(char *name) +int pdc_model_sysmodel(unsigned int os_id, char *name) { int retval; unsigned long flags; spin_lock_irqsave(&pdc_lock, flags); retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_SYSMODEL, __pa(pdc_result), - OS_ID_HPUX, __pa(name)); + os_id, __pa(name)); convert_to_wide(pdc_result); if (retval == PDC_OK) { @@ -468,7 +553,7 @@ int pdc_model_sysmodel(char *name) /** * pdc_model_versions - Identify the version number of each processor. - * @cpu_id: The return buffer. + * @versions: The return buffer. * @id: The id of the processor to check. * * Returns the version number for each processor component. @@ -539,6 +624,30 @@ int pdc_model_capabilities(unsigned long *capabilities) } /** + * pdc_model_platform_info - Returns machine product and serial number. + * @orig_prod_num: Return buffer for original product number. + * @current_prod_num: Return buffer for current product number. + * @serial_no: Return buffer for serial number. + * + * Returns strings containing the original and current product numbers and the + * serial number of the system. + */ +int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num, + char *serial_no) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_GET_PLATFORM_INFO, + __pa(orig_prod_num), __pa(current_prod_num), __pa(serial_no)); + convert_to_wide(pdc_result); + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} + +/** * pdc_cache_info - Return cache and TLB information. * @cache_info: The return buffer. * @@ -579,7 +688,6 @@ int pdc_spaceid_bits(unsigned long *space_bits) return retval; } -#ifndef CONFIG_PA20 /** * pdc_btlb_info - Return block TLB information. * @btlb: The return buffer. @@ -588,18 +696,51 @@ int pdc_spaceid_bits(unsigned long *space_bits) */ int pdc_btlb_info(struct pdc_btlb_info *btlb) { - int retval; + int retval; unsigned long flags; - spin_lock_irqsave(&pdc_lock, flags); - retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0); - memcpy(btlb, pdc_result, sizeof(*btlb)); - spin_unlock_irqrestore(&pdc_lock, flags); + if (IS_ENABLED(CONFIG_PA20)) + return PDC_BAD_PROC; - if(retval < 0) { - btlb->max_size = 0; - } - return retval; + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INFO, __pa(pdc_result), 0); + memcpy(btlb, pdc_result, sizeof(*btlb)); + spin_unlock_irqrestore(&pdc_lock, flags); + + if(retval < 0) { + btlb->max_size = 0; + } + return retval; +} + +int pdc_btlb_insert(unsigned long long vpage, unsigned long physpage, unsigned long len, + unsigned long entry_info, unsigned long slot) +{ + int retval; + unsigned long flags; + + if (IS_ENABLED(CONFIG_PA20)) + return PDC_BAD_PROC; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_INSERT, (unsigned long) (vpage >> 32), + (unsigned long) vpage, physpage, len, entry_info, slot); + spin_unlock_irqrestore(&pdc_lock, flags); + return retval; +} + +int pdc_btlb_purge_all(void) +{ + int retval; + unsigned long flags; + + if (IS_ENABLED(CONFIG_PA20)) + return PDC_BAD_PROC; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_BLOCK_TLB, PDC_BTLB_PURGE_ALL); + spin_unlock_irqrestore(&pdc_lock, flags); + return retval; } /** @@ -620,6 +761,9 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address, int retval; unsigned long flags; + if (IS_ENABLED(CONFIG_PA20)) + return PDC_BAD_PROC; + spin_lock_irqsave(&pdc_lock, flags); memcpy(pdc_result2, mod_path, sizeof(*mod_path)); retval = mem_pdc_call(PDC_MEM_MAP, PDC_MEM_MAP_HPA, __pa(pdc_result), @@ -629,7 +773,6 @@ int pdc_mem_map_hpa(struct pdc_memory_map *address, return retval; } -#endif /* !CONFIG_PA20 */ /** * pdc_lan_station_id - Get the LAN address. @@ -891,8 +1034,8 @@ int pdc_pci_irt(unsigned long num_entries, unsigned long hpa, void *tbl) /** * pdc_pci_config_read - read PCI config space. - * @hpa token from PDC to indicate which PCI device - * @pci_addr configuration space address to read from + * @hpa: Token from PDC to indicate which PCI device + * @cfg_addr: Configuration space address to read from * * Read PCI Configuration space *before* linux PCI subsystem is running. */ @@ -914,9 +1057,9 @@ unsigned int pdc_pci_config_read(void *hpa, unsigned long cfg_addr) /** * pdc_pci_config_write - read PCI config space. - * @hpa token from PDC to indicate which PCI device - * @pci_addr configuration space address to write - * @val value we want in the 32-bit register + * @hpa: Token from PDC to indicate which PCI device + * @cfg_addr: Configuration space address to write + * @val: Value we want in the 32-bit register * * Write PCI Configuration space *before* linux PCI subsystem is running. */ @@ -979,16 +1122,54 @@ int pdc_mem_pdt_read_entries(struct pdc_mem_read_pdt *pret, spin_lock_irqsave(&pdc_lock, flags); retval = mem_pdc_call(PDC_MEM, PDC_MEM_READ_PDT, __pa(pdc_result), - __pa(pdc_result2)); + __pa(pdt_entries_ptr)); if (retval == PDC_OK) { convert_to_wide(pdc_result); memcpy(pret, pdc_result, sizeof(*pret)); - convert_to_wide(pdc_result2); - memcpy(pdt_entries_ptr, pdc_result2, - pret->pdt_entries * sizeof(*pdt_entries_ptr)); } spin_unlock_irqrestore(&pdc_lock, flags); +#ifdef CONFIG_64BIT + /* + * 64-bit kernels should not call this PDT function in narrow mode. + * The pdt_entries_ptr array above will now contain 32-bit values + */ + if (WARN_ON_ONCE((retval == PDC_OK) && parisc_narrow_firmware)) + return PDC_ERROR; +#endif + + return retval; +} + +/** + * pdc_pim_toc11 - Fetch TOC PIM 1.1 data from firmware. + * @ret: pointer to return buffer + */ +int pdc_pim_toc11(struct pdc_toc_pim_11 *ret) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PIM, PDC_PIM_TOC, __pa(pdc_result), + __pa(ret), sizeof(*ret)); + spin_unlock_irqrestore(&pdc_lock, flags); + return retval; +} + +/** + * pdc_pim_toc20 - Fetch TOC PIM 2.0 data from firmware. + * @ret: pointer to return buffer + */ +int pdc_pim_toc20(struct pdc_toc_pim_20 *ret) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PIM, PDC_PIM_TOC, __pa(pdc_result), + __pa(ret), sizeof(*ret)); + spin_unlock_irqrestore(&pdc_lock, flags); return retval; } @@ -1089,15 +1270,18 @@ int __init pdc_soft_power_info(unsigned long *power_reg) } /* - * pdc_soft_power_button - Control the soft power button behaviour - * @sw_control: 0 for hardware control, 1 for software control + * pdc_soft_power_button{_panic} - Control the soft power button behaviour + * @sw_control: 0 for hardware control, 1 for software control * * * This PDC function places the soft power button under software or * hardware control. - * Under software control the OS may control to when to allow to shut - * down the system. Under hardware control pressing the power button + * Under software control the OS may control to when to allow to shut + * down the system. Under hardware control pressing the power button * powers off the system immediately. + * + * The _panic version relies on spin_trylock to prevent deadlock + * on panic path. */ int pdc_soft_power_button(int sw_control) { @@ -1111,6 +1295,22 @@ int pdc_soft_power_button(int sw_control) return retval; } +int pdc_soft_power_button_panic(int sw_control) +{ + int retval; + unsigned long flags; + + if (!spin_trylock_irqsave(&pdc_lock, flags)) { + pr_emerg("Couldn't enable soft power button\n"); + return -EBUSY; /* ignored by the panic notifier */ + } + + retval = mem_pdc_call(PDC_SOFT_POWER, PDC_SOFT_POWER_ENABLE, __pa(pdc_result), sw_control); + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} + /* * pdc_io_reset - Hack to avoid overlapping range registers of Bridges devices. * Primarily a problem on T600 (which parisc-linux doesn't support) but @@ -1143,9 +1343,10 @@ void pdc_io_reset_devices(void) spin_unlock_irqrestore(&pdc_lock, flags); } -/* locked by pdc_console_lock */ -static int __attribute__((aligned(8))) iodc_retbuf[32]; -static char __attribute__((aligned(64))) iodc_dbuf[4096]; +#endif /* defined(BOOTLOADER) */ + +/* locked by pdc_lock */ +static char iodc_dbuf[4096] __page_aligned_bss; /** * pdc_iodc_print - Console print using IODC. @@ -1159,15 +1360,19 @@ static char __attribute__((aligned(64))) iodc_dbuf[4096]; */ int pdc_iodc_print(const unsigned char *str, unsigned count) { - unsigned int i; + unsigned int i, found = 0; unsigned long flags; + count = min_t(unsigned int, count, sizeof(iodc_dbuf)); + + spin_lock_irqsave(&pdc_lock, flags); for (i = 0; i < count;) { switch(str[i]) { case '\n': iodc_dbuf[i+0] = '\r'; iodc_dbuf[i+1] = '\n'; i += 2; + found = 1; goto print; default: iodc_dbuf[i] = str[i]; @@ -1177,16 +1382,16 @@ int pdc_iodc_print(const unsigned char *str, unsigned count) } print: - spin_lock_irqsave(&pdc_lock, flags); - real32_call(PAGE0->mem_cons.iodc_io, - (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT, - PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers), - __pa(iodc_retbuf), 0, __pa(iodc_dbuf), i, 0); - spin_unlock_irqrestore(&pdc_lock, flags); + real32_call(PAGE0->mem_cons.iodc_io, + (unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT, + PAGE0->mem_cons.spa, __pa(PAGE0->mem_cons.dp.layers), + __pa(pdc_result), 0, __pa(iodc_dbuf), i, 0); + spin_unlock_irqrestore(&pdc_lock, flags); - return i; + return i - found; } +#if !defined(BOOTLOADER) /** * pdc_iodc_getc - Read a character (non-blocking) from the PDC console. * @@ -1208,10 +1413,11 @@ int pdc_iodc_getc(void) real32_call(PAGE0->mem_kbd.iodc_io, (unsigned long)PAGE0->mem_kbd.hpa, ENTRY_IO_CIN, PAGE0->mem_kbd.spa, __pa(PAGE0->mem_kbd.dp.layers), - __pa(iodc_retbuf), 0, __pa(iodc_dbuf), 1, 0); + __pa(pdc_result), 0, __pa(iodc_dbuf), 1, 0); ch = *iodc_dbuf; - status = *iodc_retbuf; + /* like convert_to_wide() but for first return value only: */ + status = *(int *)&pdc_result; spin_unlock_irqrestore(&pdc_lock, flags); if (status == 0) @@ -1221,17 +1427,25 @@ int pdc_iodc_getc(void) } int pdc_sti_call(unsigned long func, unsigned long flags, - unsigned long inptr, unsigned long outputr, - unsigned long glob_cfg) + unsigned long inptr, unsigned long outputr, + unsigned long glob_cfg, int do_call64) { - int retval; + int retval = 0; unsigned long irqflags; - spin_lock_irqsave(&pdc_lock, irqflags); - retval = real32_call(func, flags, inptr, outputr, glob_cfg); - spin_unlock_irqrestore(&pdc_lock, irqflags); + spin_lock_irqsave(&pdc_lock, irqflags); + if (IS_ENABLED(CONFIG_64BIT) && do_call64) { +#ifdef CONFIG_64BIT + retval = real64_call(func, flags, inptr, outputr, glob_cfg); +#else + WARN_ON(1); +#endif + } else { + retval = real32_call(func, flags, inptr, outputr, glob_cfg); + } + spin_unlock_irqrestore(&pdc_lock, irqflags); - return retval; + return retval; } EXPORT_SYMBOL(pdc_sti_call); @@ -1287,6 +1501,36 @@ int pdc_pat_cell_module(unsigned long *actcnt, unsigned long ploc, unsigned long } /** + * pdc_pat_cell_info - Retrieve the cell's information. + * @info: The pointer to a struct pdc_pat_cell_info_rtn_block. + * @actcnt: The number of bytes which should be written to info. + * @offset: offset of the structure. + * @cell_number: The cell number which should be asked, or -1 for current cell. + * + * This PDC call returns information about the given cell (or all cells). + */ +int pdc_pat_cell_info(struct pdc_pat_cell_info_rtn_block *info, + unsigned long *actcnt, unsigned long offset, + unsigned long cell_number) +{ + int retval; + unsigned long flags; + struct pdc_pat_cell_info_rtn_block result; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PAT_CELL, PDC_PAT_CELL_GET_INFO, + __pa(pdc_result), __pa(&result), *actcnt, + offset, cell_number); + if (!retval) { + *actcnt = pdc_result[0]; + memcpy(info, &result, *actcnt); + } + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} + +/** * pdc_pat_cpu_get_number - Retrieve the cpu number. * @cpu_info: The return buffer. * @hpa: The Hard Physical Address of the CPU. @@ -1351,7 +1595,7 @@ int pdc_pat_get_irt(void *r_addr, unsigned long cell_num) /** * pdc_pat_pd_get_addr_map - Retrieve information about memory address ranges. - * @actlen: The return buffer. + * @actual_len: The return buffer. * @mem_addr: Pointer to the memory buffer. * @count: The number of bytes to read from the buffer. * @offset: The offset with respect to the beginning of the buffer. @@ -1374,6 +1618,33 @@ int pdc_pat_pd_get_addr_map(unsigned long *actual_len, void *mem_addr, } /** + * pdc_pat_pd_get_pdc_revisions - Retrieve PDC interface revisions. + * @legacy_rev: The legacy revision. + * @pat_rev: The PAT revision. + * @pdc_cap: The PDC capabilities. + * + */ +int pdc_pat_pd_get_pdc_revisions(unsigned long *legacy_rev, + unsigned long *pat_rev, unsigned long *pdc_cap) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PAT_PD, PDC_PAT_PD_GET_PDC_INTERF_REV, + __pa(pdc_result)); + if (retval == PDC_OK) { + *legacy_rev = pdc_result[0]; + *pat_rev = pdc_result[1]; + *pdc_cap = pdc_result[2]; + } + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} + + +/** * pdc_pat_io_pci_cfg_read - Read PCI configuration space. * @pci_addr: PCI configuration space address for which the read request is being made. * @pci_size: Size of read in bytes. Valid values are 1, 2, and 4. @@ -1402,7 +1673,7 @@ int pdc_pat_io_pci_cfg_read(unsigned long pci_addr, int pci_size, u32 *mem_addr) * pdc_pat_io_pci_cfg_write - Retrieve information about memory address ranges. * @pci_addr: PCI configuration space address for which the write request is being made. * @pci_size: Size of write in bytes. Valid values are 1, 2, and 4. - * @value: Pointer to 1, 2, or 4 byte value in low order end of argument to be + * @val: Pointer to 1, 2, or 4 byte value in low order end of argument to be * written to PCI Config space. * */ @@ -1420,7 +1691,7 @@ int pdc_pat_io_pci_cfg_write(unsigned long pci_addr, int pci_size, u32 val) } /** - * pdc_pat_mem_pdc_info - Retrieve information about page deallocation table + * pdc_pat_mem_pdt_info - Retrieve information about page deallocation table * @rinfo: memory pdt information * */ @@ -1440,6 +1711,29 @@ int pdc_pat_mem_pdt_info(struct pdc_pat_mem_retinfo *rinfo) } /** + * pdc_pat_mem_pdt_cell_info - Retrieve information about page deallocation + * table of a cell + * @rinfo: memory pdt information + * @cell: cell number + * + */ +int pdc_pat_mem_pdt_cell_info(struct pdc_pat_mem_cell_pdt_retinfo *rinfo, + unsigned long cell) +{ + int retval; + unsigned long flags; + + spin_lock_irqsave(&pdc_lock, flags); + retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_INFO, + __pa(&pdc_result), cell); + if (retval == PDC_OK) + memcpy(rinfo, &pdc_result, sizeof(*rinfo)); + spin_unlock_irqrestore(&pdc_lock, flags); + + return retval; +} + +/** * pdc_pat_mem_read_cell_pdt - Read PDT entries from (old) PAT firmware * @pret: array of PDT entries * @pdt_entries_ptr: ptr to hold number of PDT entries @@ -1455,14 +1749,14 @@ int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, spin_lock_irqsave(&pdc_lock, flags); /* PDC_PAT_MEM_CELL_READ is available on early PAT machines only */ retval = mem_pdc_call(PDC_PAT_MEM, PDC_PAT_MEM_CELL_READ, - __pa(&pdc_result), parisc_cell_num, __pa(&pdc_result2)); + __pa(&pdc_result), parisc_cell_num, + __pa(pdt_entries_ptr)); if (retval == PDC_OK) { /* build up return value as for PDC_PAT_MEM_PD_READ */ entries = min(pdc_result[0], max_entries); pret->pdt_entries = entries; pret->actual_count_bytes = entries * sizeof(unsigned long); - memcpy(pdt_entries_ptr, &pdc_result2, pret->actual_count_bytes); } spin_unlock_irqrestore(&pdc_lock, flags); @@ -1474,6 +1768,8 @@ int pdc_pat_mem_read_cell_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, * pdc_pat_mem_read_pd_pdt - Read PDT entries from (newer) PAT firmware * @pret: array of PDT entries * @pdt_entries_ptr: ptr to hold number of PDT entries + * @count: number of bytes to read + * @offset: offset to start (in bytes) * */ int pdc_pat_mem_read_pd_pdt(struct pdc_pat_mem_read_pd_retinfo *pret, @@ -1524,6 +1820,7 @@ int pdc_pat_mem_get_dimm_phys_location( return retval; } #endif /* CONFIG_64BIT */ +#endif /* defined(BOOTLOADER) */ /***************** 32-bit real-mode calls ***********/ @@ -1633,4 +1930,3 @@ long real64_call(unsigned long fn, ...) } #endif /* CONFIG_64BIT */ - |