1 files changed, 0 insertions, 284 deletions
diff --git a/drivers/staging/fsl-mc/bus/fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/fsl-mc-msi.c
deleted file mode 100644
index 971ad87c584c..000000000000
--- a/drivers/staging/fsl-mc/bus/fsl-mc-msi.c
+++ /dev/null
@@ -1,284 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Freescale Management Complex (MC) bus driver MSI support
- *
- * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
- * Author: German Rivera <German.Rivera@freescale.com>
- *
- */
-
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/msi.h>
-#include "fsl-mc-private.h"
-
-#ifdef GENERIC_MSI_DOMAIN_OPS
-/*
- * Generate a unique ID identifying the interrupt (only used within the MSI
- * irqdomain.  Combine the icid with the interrupt index.
- */
-static irq_hw_number_t fsl_mc_domain_calc_hwirq(struct fsl_mc_device *dev,
-						struct msi_desc *desc)
-{
-	/*
-	 * Make the base hwirq value for ICID*10000 so it is readable
-	 * as a decimal value in /proc/interrupts.
-	 */
-	return (irq_hw_number_t)(desc->fsl_mc.msi_index + (dev->icid * 10000));
-}
-
-static void fsl_mc_msi_set_desc(msi_alloc_info_t *arg,
-				struct msi_desc *desc)
-{
-	arg->desc = desc;
-	arg->hwirq = fsl_mc_domain_calc_hwirq(to_fsl_mc_device(desc->dev),
-					      desc);
-}
-#else
-#define fsl_mc_msi_set_desc NULL
-#endif
-
-static void fsl_mc_msi_update_dom_ops(struct msi_domain_info *info)
-{
-	struct msi_domain_ops *ops = info->ops;
-
-	if (!ops)
-		return;
-
-	/*
-	 * set_desc should not be set by the caller
-	 */
-	if (!ops->set_desc)
-		ops->set_desc = fsl_mc_msi_set_desc;
-}
-
-static void __fsl_mc_msi_write_msg(struct fsl_mc_device *mc_bus_dev,
-				   struct fsl_mc_device_irq *mc_dev_irq)
-{
-	int error;
-	struct fsl_mc_device *owner_mc_dev = mc_dev_irq->mc_dev;
-	struct msi_desc *msi_desc = mc_dev_irq->msi_desc;
-	struct dprc_irq_cfg irq_cfg;
-
-	/*
-	 * msi_desc->msg.address is 0x0 when this function is invoked in
-	 * the free_irq() code path. In this case, for the MC, we don't
-	 * really need to "unprogram" the MSI, so we just return.
-	 */
-	if (msi_desc->msg.address_lo == 0x0 && msi_desc->msg.address_hi == 0x0)
-		return;
-
-	if (!owner_mc_dev)
-		return;
-
-	irq_cfg.paddr = ((u64)msi_desc->msg.address_hi << 32) |
-			msi_desc->msg.address_lo;
-	irq_cfg.val = msi_desc->msg.data;
-	irq_cfg.irq_num = msi_desc->irq;
-
-	if (owner_mc_dev == mc_bus_dev) {
-		/*
-		 * IRQ is for the mc_bus_dev's DPRC itself
-		 */
-		error = dprc_set_irq(mc_bus_dev->mc_io,
-				     MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
-				     mc_bus_dev->mc_handle,
-				     mc_dev_irq->dev_irq_index,
-				     &irq_cfg);
-		if (error < 0) {
-			dev_err(&owner_mc_dev->dev,
-				"dprc_set_irq() failed: %d\n", error);
-		}
-	} else {
-		/*
-		 * IRQ is for for a child device of mc_bus_dev
-		 */
-		error = dprc_set_obj_irq(mc_bus_dev->mc_io,
-					 MC_CMD_FLAG_INTR_DIS | MC_CMD_FLAG_PRI,
-					 mc_bus_dev->mc_handle,
-					 owner_mc_dev->obj_desc.type,
-					 owner_mc_dev->obj_desc.id,
-					 mc_dev_irq->dev_irq_index,
-					 &irq_cfg);
-		if (error < 0) {
-			dev_err(&owner_mc_dev->dev,
-				"dprc_obj_set_irq() failed: %d\n", error);
-		}
-	}
-}
-
-/*
- * NOTE: This function is invoked with interrupts disabled
- */
-static void fsl_mc_msi_write_msg(struct irq_data *irq_data,
-				 struct msi_msg *msg)
-{
-	struct msi_desc *msi_desc = irq_data_get_msi_desc(irq_data);
-	struct fsl_mc_device *mc_bus_dev = to_fsl_mc_device(msi_desc->dev);
-	struct fsl_mc_bus *mc_bus = to_fsl_mc_bus(mc_bus_dev);
-	struct fsl_mc_device_irq *mc_dev_irq =
-		&mc_bus->irq_resources[msi_desc->fsl_mc.msi_index];
-
-	msi_desc->msg = *msg;
-
-	/*
-	 * Program the MSI (paddr, value) pair in the device:
-	 */
-	__fsl_mc_msi_write_msg(mc_bus_dev, mc_dev_irq);
-}
-
-static void fsl_mc_msi_update_chip_ops(struct msi_domain_info *info)
-{
-	struct irq_chip *chip = info->chip;
-
-	if (!chip)
-		return;
-
-	/*
-	 * irq_write_msi_msg should not be set by the caller
-	 */
-	if (!chip->irq_write_msi_msg)
-		chip->irq_write_msi_msg = fsl_mc_msi_write_msg;
-}
-
-/**
- * fsl_mc_msi_create_irq_domain - Create a fsl-mc MSI interrupt domain
- * @np:		Optional device-tree node of the interrupt controller
- * @info:	MSI domain info
- * @parent:	Parent irq domain
- *
- * Updates the domain and chip ops and creates a fsl-mc MSI
- * interrupt domain.
- *
- * Returns:
- * A domain pointer or NULL in case of failure.
- */
-struct irq_domain *fsl_mc_msi_create_irq_domain(struct fwnode_handle *fwnode,
-						struct msi_domain_info *info,
-						struct irq_domain *parent)
-{
-	struct irq_domain *domain;
-
-	if (info->flags & MSI_FLAG_USE_DEF_DOM_OPS)
-		fsl_mc_msi_update_dom_ops(info);
-	if (info->flags & MSI_FLAG_USE_DEF_CHIP_OPS)
-		fsl_mc_msi_update_chip_ops(info);
-
-	domain = msi_create_irq_domain(fwnode, info, parent);
-	if (domain)
-		irq_domain_update_bus_token(domain, DOMAIN_BUS_FSL_MC_MSI);
-
-	return domain;
-}
-
-int fsl_mc_find_msi_domain(struct device *mc_platform_dev,
-			   struct irq_domain **mc_msi_domain)
-{
-	struct irq_domain *msi_domain;
-	struct device_node *mc_of_node = mc_platform_dev->of_node;
-
-	msi_domain = of_msi_get_domain(mc_platform_dev, mc_of_node,
-				       DOMAIN_BUS_FSL_MC_MSI);
-	if (!msi_domain) {
-		pr_err("Unable to find fsl-mc MSI domain for %pOF\n",
-		       mc_of_node);
-
-		return -ENOENT;
-	}
-
-	*mc_msi_domain = msi_domain;
-	return 0;
-}
-
-static void fsl_mc_msi_free_descs(struct device *dev)
-{
-	struct msi_desc *desc, *tmp;
-
-	list_for_each_entry_safe(desc, tmp, dev_to_msi_list(dev), list) {
-		list_del(&desc->list);
-		free_msi_entry(desc);
-	}
-}
-
-static int fsl_mc_msi_alloc_descs(struct device *dev, unsigned int irq_count)
-
-{
-	unsigned int i;
-	int error;
-	struct msi_desc *msi_desc;
-
-	for (i = 0; i < irq_count; i++) {
-		msi_desc = alloc_msi_entry(dev, 1, NULL);
-		if (!msi_desc) {
-			dev_err(dev, "Failed to allocate msi entry\n");
-			error = -ENOMEM;
-			goto cleanup_msi_descs;
-		}
-
-		msi_desc->fsl_mc.msi_index = i;
-		INIT_LIST_HEAD(&msi_desc->list);
-		list_add_tail(&msi_desc->list, dev_to_msi_list(dev));
-	}
-
-	return 0;
-
-cleanup_msi_descs:
-	fsl_mc_msi_free_descs(dev);
-	return error;
-}
-
-int fsl_mc_msi_domain_alloc_irqs(struct device *dev,
-				 unsigned int irq_count)
-{
-	struct irq_domain *msi_domain;
-	int error;
-
-	if (!list_empty(dev_to_msi_list(dev)))
-		return -EINVAL;
-
-	error = fsl_mc_msi_alloc_descs(dev, irq_count);
-	if (error < 0)
-		return error;
-
-	msi_domain = dev_get_msi_domain(dev);
-	if (!msi_domain) {
-		error = -EINVAL;
-		goto cleanup_msi_descs;
-	}
-
-	/*
-	 * NOTE: Calling this function will trigger the invocation of the
-	 * its_fsl_mc_msi_prepare() callback
-	 */
-	error = msi_domain_alloc_irqs(msi_domain, dev, irq_count);
-
-	if (error) {
-		dev_err(dev, "Failed to allocate IRQs\n");
-		goto cleanup_msi_descs;
-	}
-
-	return 0;
-
-cleanup_msi_descs:
-	fsl_mc_msi_free_descs(dev);
-	return error;
-}
-
-void fsl_mc_msi_domain_free_irqs(struct device *dev)
-{
-	struct irq_domain *msi_domain;
-
-	msi_domain = dev_get_msi_domain(dev);
-	if (!msi_domain)
-		return;
-
-	msi_domain_free_irqs(msi_domain, dev);
-
-	if (list_empty(dev_to_msi_list(dev)))
-		return;
-
-	fsl_mc_msi_free_descs(dev);
-}