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Diffstat (limited to 'drivers/fmc/fmc-sdb.c')
-rw-r--r--drivers/fmc/fmc-sdb.c219
1 files changed, 0 insertions, 219 deletions
diff --git a/drivers/fmc/fmc-sdb.c b/drivers/fmc/fmc-sdb.c
deleted file mode 100644
index 14758db1a5fb..000000000000
--- a/drivers/fmc/fmc-sdb.c
+++ /dev/null
@@ -1,219 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) 2012 CERN (www.cern.ch)
- * Author: Alessandro Rubini <rubini@gnudd.com>
- *
- * This work is part of the White Rabbit project, a research effort led
- * by CERN, the European Institute for Nuclear Research.
- */
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/fmc.h>
-#include <linux/sdb.h>
-#include <linux/err.h>
-#include <linux/fmc-sdb.h>
-#include <asm/byteorder.h>
-
-static uint32_t __sdb_rd(struct fmc_device *fmc, unsigned long address,
- int convert)
-{
- uint32_t res = fmc_readl(fmc, address);
- if (convert)
- return __be32_to_cpu(res);
- return res;
-}
-
-static struct sdb_array *__fmc_scan_sdb_tree(struct fmc_device *fmc,
- unsigned long sdb_addr,
- unsigned long reg_base, int level)
-{
- uint32_t onew;
- int i, j, n, convert = 0;
- struct sdb_array *arr, *sub;
-
- onew = fmc_readl(fmc, sdb_addr);
- if (onew == SDB_MAGIC) {
- /* Uh! If we are little-endian, we must convert */
- if (SDB_MAGIC != __be32_to_cpu(SDB_MAGIC))
- convert = 1;
- } else if (onew == __be32_to_cpu(SDB_MAGIC)) {
- /* ok, don't convert */
- } else {
- return ERR_PTR(-ENOENT);
- }
- /* So, the magic was there: get the count from offset 4*/
- onew = __sdb_rd(fmc, sdb_addr + 4, convert);
- n = __be16_to_cpu(*(uint16_t *)&onew);
- arr = kzalloc(sizeof(*arr), GFP_KERNEL);
- if (!arr)
- return ERR_PTR(-ENOMEM);
- arr->record = kcalloc(n, sizeof(arr->record[0]), GFP_KERNEL);
- arr->subtree = kcalloc(n, sizeof(arr->subtree[0]), GFP_KERNEL);
- if (!arr->record || !arr->subtree) {
- kfree(arr->record);
- kfree(arr->subtree);
- kfree(arr);
- return ERR_PTR(-ENOMEM);
- }
-
- arr->len = n;
- arr->level = level;
- arr->fmc = fmc;
- for (i = 0; i < n; i++) {
- union sdb_record *r;
-
- for (j = 0; j < sizeof(arr->record[0]); j += 4) {
- *(uint32_t *)((void *)(arr->record + i) + j) =
- __sdb_rd(fmc, sdb_addr + (i * 64) + j, convert);
- }
- r = &arr->record[i];
- arr->subtree[i] = ERR_PTR(-ENODEV);
- if (r->empty.record_type == sdb_type_bridge) {
- struct sdb_component *c = &r->bridge.sdb_component;
- uint64_t subaddr = __be64_to_cpu(r->bridge.sdb_child);
- uint64_t newbase = __be64_to_cpu(c->addr_first);
-
- subaddr += reg_base;
- newbase += reg_base;
- sub = __fmc_scan_sdb_tree(fmc, subaddr, newbase,
- level + 1);
- arr->subtree[i] = sub; /* may be error */
- if (IS_ERR(sub))
- continue;
- sub->parent = arr;
- sub->baseaddr = newbase;
- }
- }
- return arr;
-}
-
-int fmc_scan_sdb_tree(struct fmc_device *fmc, unsigned long address)
-{
- struct sdb_array *ret;
- if (fmc->sdb)
- return -EBUSY;
- ret = __fmc_scan_sdb_tree(fmc, address, 0 /* regs */, 0);
- if (IS_ERR(ret))
- return PTR_ERR(ret);
- fmc->sdb = ret;
- return 0;
-}
-EXPORT_SYMBOL(fmc_scan_sdb_tree);
-
-static void __fmc_sdb_free(struct sdb_array *arr)
-{
- int i, n;
-
- if (!arr)
- return;
- n = arr->len;
- for (i = 0; i < n; i++) {
- if (IS_ERR(arr->subtree[i]))
- continue;
- __fmc_sdb_free(arr->subtree[i]);
- }
- kfree(arr->record);
- kfree(arr->subtree);
- kfree(arr);
-}
-
-int fmc_free_sdb_tree(struct fmc_device *fmc)
-{
- __fmc_sdb_free(fmc->sdb);
- fmc->sdb = NULL;
- return 0;
-}
-EXPORT_SYMBOL(fmc_free_sdb_tree);
-
-/* This helper calls reprogram and inizialized sdb as well */
-int fmc_reprogram_raw(struct fmc_device *fmc, struct fmc_driver *d,
- void *gw, unsigned long len, int sdb_entry)
-{
- int ret;
-
- ret = fmc->op->reprogram_raw(fmc, d, gw, len);
- if (ret < 0)
- return ret;
- if (sdb_entry < 0)
- return ret;
-
- /* We are required to find SDB at a given offset */
- ret = fmc_scan_sdb_tree(fmc, sdb_entry);
- if (ret < 0) {
- dev_err(&fmc->dev, "Can't find SDB at address 0x%x\n",
- sdb_entry);
- return -ENODEV;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(fmc_reprogram_raw);
-
-/* This helper calls reprogram and inizialized sdb as well */
-int fmc_reprogram(struct fmc_device *fmc, struct fmc_driver *d, char *gw,
- int sdb_entry)
-{
- int ret;
-
- ret = fmc->op->reprogram(fmc, d, gw);
- if (ret < 0)
- return ret;
- if (sdb_entry < 0)
- return ret;
-
- /* We are required to find SDB at a given offset */
- ret = fmc_scan_sdb_tree(fmc, sdb_entry);
- if (ret < 0) {
- dev_err(&fmc->dev, "Can't find SDB at address 0x%x\n",
- sdb_entry);
- return -ENODEV;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(fmc_reprogram);
-
-void fmc_show_sdb_tree(const struct fmc_device *fmc)
-{
- pr_err("%s: not supported anymore, use debugfs to dump SDB\n",
- __func__);
-}
-EXPORT_SYMBOL(fmc_show_sdb_tree);
-
-signed long fmc_find_sdb_device(struct sdb_array *tree,
- uint64_t vid, uint32_t did, unsigned long *sz)
-{
- signed long res = -ENODEV;
- union sdb_record *r;
- struct sdb_product *p;
- struct sdb_component *c;
- int i, n = tree->len;
- uint64_t last, first;
-
- /* FIXME: what if the first interconnect is not at zero? */
- for (i = 0; i < n; i++) {
- r = &tree->record[i];
- c = &r->dev.sdb_component;
- p = &c->product;
-
- if (!IS_ERR(tree->subtree[i]))
- res = fmc_find_sdb_device(tree->subtree[i],
- vid, did, sz);
- if (res >= 0)
- return res + tree->baseaddr;
- if (r->empty.record_type != sdb_type_device)
- continue;
- if (__be64_to_cpu(p->vendor_id) != vid)
- continue;
- if (__be32_to_cpu(p->device_id) != did)
- continue;
- /* found */
- last = __be64_to_cpu(c->addr_last);
- first = __be64_to_cpu(c->addr_first);
- if (sz)
- *sz = (typeof(*sz))(last + 1 - first);
- return first + tree->baseaddr;
- }
- return res;
-}
-EXPORT_SYMBOL(fmc_find_sdb_device);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 11:55:15 +0000