FMC: add needed headers
This set of headers comes from commit ab23167f (current master of the project on ohwr.org). They define the basic data structures for FMC and its SDB support. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch> Acked-by: Emilio G. Cota <cota@braap.org> Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alessandro Rubini
Greg Kroah-Hartman
Родитель
9c9f32edde
Коммит
e34fae7841
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@ -0,0 +1,36 @@
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/*
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* This file is separate from sdb.h, because I want that one to remain
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* unchanged (as far as possible) from the official sdb distribution
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*
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* This file and associated functionality are a playground for me to
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* understand stuff which will later be implemented in more generic places.
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*/
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#include <linux/sdb.h>
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/* This is the union of all currently defined types */
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union sdb_record {
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struct sdb_interconnect ic;
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struct sdb_device dev;
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struct sdb_bridge bridge;
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struct sdb_integration integr;
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struct sdb_empty empty;
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};
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struct fmc_device;
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/* Every sdb table is turned into this structure */
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struct sdb_array {
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int len;
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int level;
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unsigned long baseaddr;
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struct fmc_device *fmc; /* the device that hosts it */
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struct sdb_array *parent; /* NULL at root */
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union sdb_record *record; /* copies of the struct */
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struct sdb_array **subtree; /* only valid for bridge items */
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};
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extern int fmc_scan_sdb_tree(struct fmc_device *fmc, unsigned long address);
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extern void fmc_show_sdb_tree(const struct fmc_device *fmc);
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extern signed long fmc_find_sdb_device(struct sdb_array *tree, uint64_t vendor,
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uint32_t device, unsigned long *sz);
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extern int fmc_free_sdb_tree(struct fmc_device *fmc);
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@ -0,0 +1,237 @@
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/*
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* Copyright (C) 2012 CERN (www.cern.ch)
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* Author: Alessandro Rubini <rubini@gnudd.com>
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*
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* Released according to the GNU GPL, version 2 or any later version.
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*
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* This work is part of the White Rabbit project, a research effort led
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* by CERN, the European Institute for Nuclear Research.
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*/
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#ifndef __LINUX_FMC_H__
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#define __LINUX_FMC_H__
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#include <linux/types.h>
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#include <linux/moduleparam.h>
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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struct fmc_device;
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struct fmc_driver;
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/*
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* This bus abstraction is developed separately from drivers, so we need
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* to check the version of the data structures we receive.
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*/
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#define FMC_MAJOR 3
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#define FMC_MINOR 0
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#define FMC_VERSION ((FMC_MAJOR << 16) | FMC_MINOR)
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#define __FMC_MAJOR(x) ((x) >> 16)
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#define __FMC_MINOR(x) ((x) & 0xffff)
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/*
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* The device identification, as defined by the IPMI FRU (Field Replaceable
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* Unit) includes four different strings to describe the device. Here we
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* only match the "Board Manufacturer" and the "Board Product Name",
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* ignoring the "Board Serial Number" and "Board Part Number". All 4 are
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* expected to be strings, so they are treated as zero-terminated C strings.
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* Unspecified string (NULL) means "any", so if both are unspecified this
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* is a catch-all driver. So null entries are allowed and we use array
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* and length. This is unlike pci and usb that use null-terminated arrays
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*/
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struct fmc_fru_id {
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char *manufacturer;
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char *product_name;
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};
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/*
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* If the FPGA is already programmed (think Etherbone or the second
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* SVEC slot), we can match on SDB devices in the memory image. This
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* match uses an array of devices that must all be present, and the
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* match is based on vendor and device only. Further checks are expected
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* to happen in the probe function. Zero means "any" and catch-all is allowed.
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*/
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struct fmc_sdb_one_id {
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uint64_t vendor;
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uint32_t device;
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};
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struct fmc_sdb_id {
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struct fmc_sdb_one_id *cores;
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int cores_nr;
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};
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struct fmc_device_id {
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struct fmc_fru_id *fru_id;
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int fru_id_nr;
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struct fmc_sdb_id *sdb_id;
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int sdb_id_nr;
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};
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/* This sizes the module_param_array used by generic module parameters */
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#define FMC_MAX_CARDS 32
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/* The driver is a pretty simple thing */
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struct fmc_driver {
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unsigned long version;
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struct device_driver driver;
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int (*probe)(struct fmc_device *);
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int (*remove)(struct fmc_device *);
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const struct fmc_device_id id_table;
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/* What follows is for generic module parameters */
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int busid_n;
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int busid_val[FMC_MAX_CARDS];
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int gw_n;
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char *gw_val[FMC_MAX_CARDS];
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};
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#define to_fmc_driver(x) container_of((x), struct fmc_driver, driver)
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/* These are the generic parameters, that drivers may instantiate */
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#define FMC_PARAM_BUSID(_d) \
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module_param_array_named(busid, _d.busid_val, int, &_d.busid_n, 0444)
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#define FMC_PARAM_GATEWARE(_d) \
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module_param_array_named(gateware, _d.gw_val, charp, &_d.gw_n, 0444)
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/*
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* Drivers may need to configure gpio pins in the carrier. To read input
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* (a very uncommon operation, and definitely not in the hot paths), just
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* configure one gpio only and get 0 or 1 as retval of the config method
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*/
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struct fmc_gpio {
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char *carrier_name; /* name or NULL for virtual pins */
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int gpio;
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int _gpio; /* internal use by the carrier */
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int mode; /* GPIOF_DIR_OUT etc, from <linux/gpio.h> */
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int irqmode; /* IRQF_TRIGGER_LOW and so on */
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};
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/* The numbering of gpio pins allows access to raw pins or virtual roles */
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#define FMC_GPIO_RAW(x) (x) /* 4096 of them */
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#define __FMC_GPIO_IS_RAW(x) ((x) < 0x1000)
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#define FMC_GPIO_IRQ(x) ((x) + 0x1000) /* 256 of them */
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#define FMC_GPIO_LED(x) ((x) + 0x1100) /* 256 of them */
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#define FMC_GPIO_KEY(x) ((x) + 0x1200) /* 256 of them */
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#define FMC_GPIO_TP(x) ((x) + 0x1300) /* 256 of them */
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#define FMC_GPIO_USER(x) ((x) + 0x1400) /* 256 of them */
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/* We may add SCL and SDA, or other roles if the need arises */
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/* GPIOF_DIR_IN etc are missing before 3.0. copy from <linux/gpio.h> */
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#ifndef GPIOF_DIR_IN
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# define GPIOF_DIR_OUT (0 << 0)
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# define GPIOF_DIR_IN (1 << 0)
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# define GPIOF_INIT_LOW (0 << 1)
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# define GPIOF_INIT_HIGH (1 << 1)
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#endif
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/*
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* The operations are offered by each carrier and should make driver
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* design completely independent of the carrier. Named GPIO pins may be
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* the exception.
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*/
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struct fmc_operations {
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uint32_t (*readl)(struct fmc_device *fmc, int offset);
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void (*writel)(struct fmc_device *fmc, uint32_t value, int offset);
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int (*validate)(struct fmc_device *fmc, struct fmc_driver *drv);
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int (*reprogram)(struct fmc_device *f, struct fmc_driver *d, char *gw);
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int (*irq_request)(struct fmc_device *fmc, irq_handler_t h,
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char *name, int flags);
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void (*irq_ack)(struct fmc_device *fmc);
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int (*irq_free)(struct fmc_device *fmc);
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int (*gpio_config)(struct fmc_device *fmc, struct fmc_gpio *gpio,
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int ngpio);
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int (*read_ee)(struct fmc_device *fmc, int pos, void *d, int l);
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int (*write_ee)(struct fmc_device *fmc, int pos, const void *d, int l);
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};
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/* Prefer this helper rather than calling of fmc->reprogram directly */
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extern int fmc_reprogram(struct fmc_device *f, struct fmc_driver *d, char *gw,
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int sdb_entry);
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/*
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* The device reports all information needed to access hw.
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*
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* If we have eeprom_len and not contents, the core reads it.
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* Then, parsing of identifiers is done by the core which fills fmc_fru_id..
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* Similarly a device that must be matched based on SDB cores must
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* fill the entry point and the core will scan the bus (FIXME: sdb match)
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*/
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struct fmc_device {
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unsigned long version;
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unsigned long flags;
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struct module *owner; /* char device must pin it */
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struct fmc_fru_id id; /* for EEPROM-based match */
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struct fmc_operations *op; /* carrier-provided */
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int irq; /* according to host bus. 0 == none */
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int eeprom_len; /* Usually 8kB, may be less */
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int eeprom_addr; /* 0x50, 0x52 etc */
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uint8_t *eeprom; /* Full contents or leading part */
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char *carrier_name; /* "SPEC" or similar, for special use */
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void *carrier_data; /* "struct spec *" or equivalent */
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__iomem void *fpga_base; /* May be NULL (Etherbone) */
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__iomem void *slot_base; /* Set by the driver */
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struct fmc_device **devarray; /* Allocated by the bus */
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int slot_id; /* Index in the slot array */
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int nr_slots; /* Number of slots in this carrier */
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unsigned long memlen; /* Used for the char device */
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struct device dev; /* For Linux use */
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struct device *hwdev; /* The underlying hardware device */
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unsigned long sdbfs_entry;
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struct sdb_array *sdb;
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uint32_t device_id; /* Filled by the device */
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char *mezzanine_name; /* Defaults to ``fmc'' */
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void *mezzanine_data;
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};
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#define to_fmc_device(x) container_of((x), struct fmc_device, dev)
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#define FMC_DEVICE_HAS_GOLDEN 1
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#define FMC_DEVICE_HAS_CUSTOM 2
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#define FMC_DEVICE_NO_MEZZANINE 4
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#define FMC_DEVICE_MATCH_SDB 8 /* fmc-core must scan sdb in fpga */
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/*
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* If fpga_base can be used, the carrier offers no readl/writel methods, and
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* this expands to a single, fast, I/O access.
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*/
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static inline uint32_t fmc_readl(struct fmc_device *fmc, int offset)
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{
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if (unlikely(fmc->op->readl))
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return fmc->op->readl(fmc, offset);
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return readl(fmc->fpga_base + offset);
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}
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static inline void fmc_writel(struct fmc_device *fmc, uint32_t val, int off)
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{
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if (unlikely(fmc->op->writel))
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fmc->op->writel(fmc, val, off);
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else
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writel(val, fmc->fpga_base + off);
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}
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/* pci-like naming */
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static inline void *fmc_get_drvdata(const struct fmc_device *fmc)
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{
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return dev_get_drvdata(&fmc->dev);
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}
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static inline void fmc_set_drvdata(struct fmc_device *fmc, void *data)
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{
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dev_set_drvdata(&fmc->dev, data);
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}
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/* The 4 access points */
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extern int fmc_driver_register(struct fmc_driver *drv);
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extern void fmc_driver_unregister(struct fmc_driver *drv);
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extern int fmc_device_register(struct fmc_device *tdev);
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extern void fmc_device_unregister(struct fmc_device *tdev);
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/* Two more for device sets, all driven by the same FPGA */
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extern int fmc_device_register_n(struct fmc_device **devs, int n);
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extern void fmc_device_unregister_n(struct fmc_device **devs, int n);
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/* Internal cross-calls between files; not exported to other modules */
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extern int fmc_match(struct device *dev, struct device_driver *drv);
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extern int fmc_fill_id_info(struct fmc_device *fmc);
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extern void fmc_free_id_info(struct fmc_device *fmc);
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extern void fmc_dump_eeprom(const struct fmc_device *fmc);
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extern void fmc_dump_sdb(const struct fmc_device *fmc);
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#endif /* __LINUX_FMC_H__ */
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@ -0,0 +1,135 @@
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/*
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* Copyright (C) 2012 CERN (www.cern.ch)
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* Author: Alessandro Rubini <rubini@gnudd.com>
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*
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* Released according to the GNU GPL, version 2 or any later version.
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*
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* This work is part of the White Rabbit project, a research effort led
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* by CERN, the European Institute for Nuclear Research.
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*/
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#ifndef __LINUX_IPMI_FRU_H__
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#define __LINUX_IPMI_FRU_H__
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#ifdef __KERNEL__
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# include <linux/types.h>
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# include <linux/string.h>
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#else
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# include <stdint.h>
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# include <string.h>
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#endif
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/*
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* These structures match the unaligned crap we have in FRU1011.pdf
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* (http://download.intel.com/design/servers/ipmi/FRU1011.pdf)
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*/
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/* chapter 8, page 5 */
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struct fru_common_header {
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uint8_t format; /* 0x01 */
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uint8_t internal_use_off; /* multiple of 8 bytes */
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uint8_t chassis_info_off; /* multiple of 8 bytes */
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uint8_t board_area_off; /* multiple of 8 bytes */
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uint8_t product_area_off; /* multiple of 8 bytes */
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uint8_t multirecord_off; /* multiple of 8 bytes */
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uint8_t pad; /* must be 0 */
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uint8_t checksum; /* sum modulo 256 must be 0 */
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};
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/* chapter 9, page 5 -- internal_use: not used by us */
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/* chapter 10, page 6 -- chassis info: not used by us */
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/* chapter 13, page 9 -- used by board_info_area below */
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struct fru_type_length {
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uint8_t type_length;
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uint8_t data[0];
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};
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/* chapter 11, page 7 */
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struct fru_board_info_area {
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uint8_t format; /* 0x01 */
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uint8_t area_len; /* multiple of 8 bytes */
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uint8_t language; /* I hope it's 0 */
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uint8_t mfg_date[3]; /* LSB, minutes since 1996-01-01 */
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struct fru_type_length tl[0]; /* type-length stuff follows */
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/*
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* the TL there are in order:
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* Board Manufacturer
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* Board Product Name
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* Board Serial Number
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* Board Part Number
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* FRU File ID (may be null)
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* more manufacturer-specific stuff
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* 0xc1 as a terminator
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* 0x00 pad to a multiple of 8 bytes - 1
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* checksum (sum of all stuff module 256 must be zero)
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*/
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};
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enum fru_type {
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FRU_TYPE_BINARY = 0x00,
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FRU_TYPE_BCDPLUS = 0x40,
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FRU_TYPE_ASCII6 = 0x80,
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FRU_TYPE_ASCII = 0xc0, /* not ascii: depends on language */
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};
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/*
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* some helpers
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*/
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static inline struct fru_board_info_area *fru_get_board_area(
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const struct fru_common_header *header)
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{
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/* we know for sure that the header is 8 bytes in size */
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return (struct fru_board_info_area *)(header + header->board_area_off);
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}
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static inline int fru_type(struct fru_type_length *tl)
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{
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return tl->type_length & 0xc0;
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}
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static inline int fru_length(struct fru_type_length *tl)
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{
|
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return (tl->type_length & 0x3f) + 1; /* len of whole record */
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}
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/* assume ascii-latin1 encoding */
|
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static inline int fru_strlen(struct fru_type_length *tl)
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{
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return fru_length(tl) - 1;
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}
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static inline char *fru_strcpy(char *dest, struct fru_type_length *tl)
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{
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int len = fru_strlen(tl);
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memcpy(dest, tl->data, len);
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dest[len] = '\0';
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return dest;
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}
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static inline struct fru_type_length *fru_next_tl(struct fru_type_length *tl)
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{
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return tl + fru_length(tl);
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}
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static inline int fru_is_eof(struct fru_type_length *tl)
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{
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return tl->type_length == 0xc1;
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}
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|
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/*
|
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* External functions defined in fru-parse.c.
|
||||
*/
|
||||
extern int fru_header_cksum_ok(struct fru_common_header *header);
|
||||
extern int fru_bia_cksum_ok(struct fru_board_info_area *bia);
|
||||
|
||||
/* All these 4 return allocated strings by calling fru_alloc() */
|
||||
extern char *fru_get_board_manufacturer(struct fru_common_header *header);
|
||||
extern char *fru_get_product_name(struct fru_common_header *header);
|
||||
extern char *fru_get_serial_number(struct fru_common_header *header);
|
||||
extern char *fru_get_part_number(struct fru_common_header *header);
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||||
|
||||
/* This must be defined by the caller of the above functions */
|
||||
extern void *fru_alloc(size_t size);
|
||||
|
||||
#endif /* __LINUX_IMPI_FRU_H__ */
|
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@ -0,0 +1,159 @@
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/*
|
||||
* This is the official version 1.1 of sdb.h
|
||||
*/
|
||||
#ifndef __SDB_H__
|
||||
#define __SDB_H__
|
||||
#ifdef __KERNEL__
|
||||
#include <linux/types.h>
|
||||
#else
|
||||
#include <stdint.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* All structures are 64 bytes long and are expected
|
||||
* to live in an array, one for each interconnect.
|
||||
* Most fields of the structures are shared among the
|
||||
* various types, and most-specific fields are at the
|
||||
* beginning (for alignment reasons, and to keep the
|
||||
* magic number at the head of the interconnect record
|
||||
*/
|
||||
|
||||
/* Product, 40 bytes at offset 24, 8-byte aligned
|
||||
*
|
||||
* device_id is vendor-assigned; version is device-specific,
|
||||
* date is hex (e.g 0x20120501), name is UTF-8, blank-filled
|
||||
* and not terminated with a 0 byte.
|
||||
*/
|
||||
struct sdb_product {
|
||||
uint64_t vendor_id; /* 0x18..0x1f */
|
||||
uint32_t device_id; /* 0x20..0x23 */
|
||||
uint32_t version; /* 0x24..0x27 */
|
||||
uint32_t date; /* 0x28..0x2b */
|
||||
uint8_t name[19]; /* 0x2c..0x3e */
|
||||
uint8_t record_type; /* 0x3f */
|
||||
};
|
||||
|
||||
/*
|
||||
* Component, 56 bytes at offset 8, 8-byte aligned
|
||||
*
|
||||
* The address range is first to last, inclusive
|
||||
* (for example 0x100000 - 0x10ffff)
|
||||
*/
|
||||
struct sdb_component {
|
||||
uint64_t addr_first; /* 0x08..0x0f */
|
||||
uint64_t addr_last; /* 0x10..0x17 */
|
||||
struct sdb_product product; /* 0x18..0x3f */
|
||||
};
|
||||
|
||||
/* Type of the SDB record */
|
||||
enum sdb_record_type {
|
||||
sdb_type_interconnect = 0x00,
|
||||
sdb_type_device = 0x01,
|
||||
sdb_type_bridge = 0x02,
|
||||
sdb_type_integration = 0x80,
|
||||
sdb_type_repo_url = 0x81,
|
||||
sdb_type_synthesis = 0x82,
|
||||
sdb_type_empty = 0xFF,
|
||||
};
|
||||
|
||||
/* Type 0: interconnect (first of the array)
|
||||
*
|
||||
* sdb_records is the length of the table including this first
|
||||
* record, version is 1. The bus type is enumerated later.
|
||||
*/
|
||||
#define SDB_MAGIC 0x5344422d /* "SDB-" */
|
||||
struct sdb_interconnect {
|
||||
uint32_t sdb_magic; /* 0x00-0x03 */
|
||||
uint16_t sdb_records; /* 0x04-0x05 */
|
||||
uint8_t sdb_version; /* 0x06 */
|
||||
uint8_t sdb_bus_type; /* 0x07 */
|
||||
struct sdb_component sdb_component; /* 0x08-0x3f */
|
||||
};
|
||||
|
||||
/* Type 1: device
|
||||
*
|
||||
* class is 0 for "custom device", other values are
|
||||
* to be standardized; ABI version is for the driver,
|
||||
* bus-specific bits are defined by each bus (see below)
|
||||
*/
|
||||
struct sdb_device {
|
||||
uint16_t abi_class; /* 0x00-0x01 */
|
||||
uint8_t abi_ver_major; /* 0x02 */
|
||||
uint8_t abi_ver_minor; /* 0x03 */
|
||||
uint32_t bus_specific; /* 0x04-0x07 */
|
||||
struct sdb_component sdb_component; /* 0x08-0x3f */
|
||||
};
|
||||
|
||||
/* Type 2: bridge
|
||||
*
|
||||
* child is the address of the nested SDB table
|
||||
*/
|
||||
struct sdb_bridge {
|
||||
uint64_t sdb_child; /* 0x00-0x07 */
|
||||
struct sdb_component sdb_component; /* 0x08-0x3f */
|
||||
};
|
||||
|
||||
/* Type 0x80: integration
|
||||
*
|
||||
* all types with bit 7 set are meta-information, so
|
||||
* software can ignore the types it doesn't know. Here we
|
||||
* just provide product information for an aggregate device
|
||||
*/
|
||||
struct sdb_integration {
|
||||
uint8_t reserved[24]; /* 0x00-0x17 */
|
||||
struct sdb_product product; /* 0x08-0x3f */
|
||||
};
|
||||
|
||||
/* Type 0x81: Top module repository url
|
||||
*
|
||||
* again, an informative field that software can ignore
|
||||
*/
|
||||
struct sdb_repo_url {
|
||||
uint8_t repo_url[63]; /* 0x00-0x3e */
|
||||
uint8_t record_type; /* 0x3f */
|
||||
};
|
||||
|
||||
/* Type 0x82: Synthesis tool information
|
||||
*
|
||||
* this informative record
|
||||
*/
|
||||
struct sdb_synthesis {
|
||||
uint8_t syn_name[16]; /* 0x00-0x0f */
|
||||
uint8_t commit_id[16]; /* 0x10-0x1f */
|
||||
uint8_t tool_name[8]; /* 0x20-0x27 */
|
||||
uint32_t tool_version; /* 0x28-0x2b */
|
||||
uint32_t date; /* 0x2c-0x2f */
|
||||
uint8_t user_name[15]; /* 0x30-0x3e */
|
||||
uint8_t record_type; /* 0x3f */
|
||||
};
|
||||
|
||||
/* Type 0xff: empty
|
||||
*
|
||||
* this allows keeping empty slots during development,
|
||||
* so they can be filled later with minimal efforts and
|
||||
* no misleading description is ever shipped -- hopefully.
|
||||
* It can also be used to pad a table to a desired length.
|
||||
*/
|
||||
struct sdb_empty {
|
||||
uint8_t reserved[63]; /* 0x00-0x3e */
|
||||
uint8_t record_type; /* 0x3f */
|
||||
};
|
||||
|
||||
/* The type of bus, for bus-specific flags */
|
||||
enum sdb_bus_type {
|
||||
sdb_wishbone = 0x00,
|
||||
sdb_data = 0x01,
|
||||
};
|
||||
|
||||
#define SDB_WB_WIDTH_MASK 0x0f
|
||||
#define SDB_WB_ACCESS8 0x01
|
||||
#define SDB_WB_ACCESS16 0x02
|
||||
#define SDB_WB_ACCESS32 0x04
|
||||
#define SDB_WB_ACCESS64 0x08
|
||||
#define SDB_WB_LITTLE_ENDIAN 0x80
|
||||
|
||||
#define SDB_DATA_READ 0x04
|
||||
#define SDB_DATA_WRITE 0x02
|
||||
#define SDB_DATA_EXEC 0x01
|
||||
|
||||
#endif /* __SDB_H__ */
|
||||
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