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Diffstat (limited to 'target/linux/generic/files/drivers/misc/owl-loader.c')
-rw-r--r--target/linux/generic/files/drivers/misc/owl-loader.c246
1 files changed, 0 insertions, 246 deletions
diff --git a/target/linux/generic/files/drivers/misc/owl-loader.c b/target/linux/generic/files/drivers/misc/owl-loader.c
deleted file mode 100644
index a4e55ad7b1..0000000000
--- a/target/linux/generic/files/drivers/misc/owl-loader.c
+++ /dev/null
@@ -1,246 +0,0 @@
-/*
- * Initialize Owl Emulation Devices
- *
- * Copyright (C) 2016 Christian Lamparter <chunkeey@googlemail.com>
- * Copyright (C) 2016 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
- * Some devices (like the Cisco Meraki Z1 Cloud Managed Teleworker Gateway)
- * need to be able to initialize the PCIe wifi device. Normally, this is done
- * during the early stages of booting linux, because the necessary init code
- * is read from the memory mapped SPI and passed to pci_enable_ath9k_fixup.
- * However,this isn't possible for devices which have the init code for the
- * Atheros chip stored on NAND. Hence, this module can be used to initialze
- * the chip when the user-space is ready to extract the init code.
- */
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/completion.h>
-#include <linux/etherdevice.h>
-#include <linux/firmware.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/ath9k_platform.h>
-
-struct owl_ctx {
- struct completion eeprom_load;
-};
-
-#define EEPROM_FILENAME_LEN 100
-
-#define AR5416_EEPROM_MAGIC 0xa55a
-
-static int ath9k_pci_fixup(struct pci_dev *pdev, const u16 *cal_data,
- size_t cal_len)
-{
- void __iomem *mem;
- const void *cal_end = (void *)cal_data + cal_len;
- const struct {
- u16 reg;
- u16 low_val;
- u16 high_val;
- } __packed *data;
- u16 cmd;
- u32 bar0;
- bool swap_needed = false;
-
- if (*cal_data != AR5416_EEPROM_MAGIC) {
- if (*cal_data != swab16(AR5416_EEPROM_MAGIC)) {
- dev_err(&pdev->dev, "invalid calibration data\n");
- return -EINVAL;
- }
-
- dev_dbg(&pdev->dev, "calibration data needs swapping\n");
- swap_needed = true;
- }
-
- dev_info(&pdev->dev, "fixup device configuration\n");
-
- mem = pcim_iomap(pdev, 0, 0);
- if (!mem) {
- dev_err(&pdev->dev, "ioremap error\n");
- return -EINVAL;
- }
-
- pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &bar0);
- pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0,
- pci_resource_start(pdev, 0));
- pci_read_config_word(pdev, PCI_COMMAND, &cmd);
- cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
- pci_write_config_word(pdev, PCI_COMMAND, cmd);
-
- /* set pointer to first reg address */
- for (data = (const void *) (cal_data + 3);
- (const void *) data <= cal_end && data->reg != (u16)~0;
- data++) {
- u32 val;
- u16 reg;
-
- reg = data->reg;
- val = data->low_val;
- val |= ((u32)data->high_val) << 16;
-
- if (swap_needed) {
- reg = swab16(reg);
- val = swahb32(val);
- }
-
-#ifdef CONFIG_LANTIQ
- val = swab32(val);
-#endif
-
- __raw_writel(val, mem + reg);
- udelay(100);
- }
-
- pci_read_config_word(pdev, PCI_COMMAND, &cmd);
- cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
- pci_write_config_word(pdev, PCI_COMMAND, cmd);
-
- pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, bar0);
- pcim_iounmap(pdev, mem);
-
- pci_disable_device(pdev);
-
- return 0;
-}
-
-static void owl_fw_cb(const struct firmware *fw, void *context)
-{
- struct pci_dev *pdev = (struct pci_dev *) context;
- struct owl_ctx *ctx = (struct owl_ctx *) pci_get_drvdata(pdev);
- struct ath9k_platform_data *pdata = dev_get_platdata(&pdev->dev);
- struct pci_bus *bus;
-
- complete(&ctx->eeprom_load);
-
- if (!fw) {
- dev_err(&pdev->dev, "no eeprom data received.\n");
- goto release;
- }
-
- /* also note that we are doing *u16 operations on the file */
- if (fw->size > sizeof(pdata->eeprom_data) || fw->size < 0x200 ||
- (fw->size & 1) == 1) {
- dev_err(&pdev->dev, "eeprom file has an invalid size.\n");
- goto release;
- }
-
- if (pdata) {
- memcpy(pdata->eeprom_data, fw->data, fw->size);
-
- /*
- * eeprom has been successfully loaded - pass the data to ath9k
- * but remove the eeprom_name, so it doesn't try to load it too.
- */
- pdata->eeprom_name = NULL;
- }
-
- if (ath9k_pci_fixup(pdev, (const u16 *) fw->data, fw->size))
- goto release;
-
- pci_lock_rescan_remove();
- bus = pdev->bus;
- pci_stop_and_remove_bus_device(pdev);
- /*
- * the device should come back with the proper
- * ProductId. But we have to initiate a rescan.
- */
- pci_rescan_bus(bus);
- pci_unlock_rescan_remove();
-
-release:
- release_firmware(fw);
-}
-
-static const char *owl_get_eeprom_name(struct pci_dev *pdev)
-{
- struct device *dev = &pdev->dev;
- struct ath9k_platform_data *pdata;
- char *eeprom_name;
-
- /* try the existing platform data first */
- pdata = dev_get_platdata(dev);
- if (pdata && pdata->eeprom_name)
- return pdata->eeprom_name;
-
- dev_dbg(dev, "using auto-generated eeprom filename\n");
-
- eeprom_name = devm_kzalloc(dev, EEPROM_FILENAME_LEN, GFP_KERNEL);
- if (!eeprom_name)
- return NULL;
-
- /* this should match the pattern used in ath9k/init.c */
- scnprintf(eeprom_name, EEPROM_FILENAME_LEN, "ath9k-eeprom-pci-%s.bin",
- dev_name(dev));
-
- return eeprom_name;
-}
-
-static int owl_probe(struct pci_dev *pdev,
- const struct pci_device_id *id)
-{
- struct owl_ctx *ctx;
- const char *eeprom_name;
- int err = 0;
-
- if (pcim_enable_device(pdev))
- return -EIO;
-
- pcim_pin_device(pdev);
-
- eeprom_name = owl_get_eeprom_name(pdev);
- if (!eeprom_name) {
- dev_err(&pdev->dev, "no eeprom filename found.\n");
- return -ENODEV;
- }
-
- ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
- if (!ctx) {
- dev_err(&pdev->dev, "failed to alloc device context.\n");
- return -ENOMEM;
- }
- init_completion(&ctx->eeprom_load);
-
- pci_set_drvdata(pdev, ctx);
- err = request_firmware_nowait(THIS_MODULE, true, eeprom_name,
- &pdev->dev, GFP_KERNEL, pdev, owl_fw_cb);
- if (err) {
- dev_err(&pdev->dev, "failed to request caldata (%d).\n", err);
- kfree(ctx);
- }
- return err;
-}
-
-static void owl_remove(struct pci_dev *pdev)
-{
- struct owl_ctx *ctx = pci_get_drvdata(pdev);
-
- if (ctx) {
- wait_for_completion(&ctx->eeprom_load);
- pci_set_drvdata(pdev, NULL);
- kfree(ctx);
- }
-}
-
-static const struct pci_device_id owl_pci_table[] = {
- { PCI_VDEVICE(ATHEROS, 0xff1c) }, /* PCIe */
- { PCI_VDEVICE(ATHEROS, 0xff1d) }, /* PCI */
- { },
-};
-MODULE_DEVICE_TABLE(pci, owl_pci_table);
-
-static struct pci_driver owl_driver = {
- .name = "owl-loader",
- .id_table = owl_pci_table,
- .probe = owl_probe,
- .remove = owl_remove,
-};
-module_pci_driver(owl_driver);
-MODULE_AUTHOR("Christian Lamparter <chunkeey@googlemail.com>");
-MODULE_DESCRIPTION("Initializes Atheros' Owl Emulation devices");
-MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 01:49:15 +0000