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Merge "Revert "soc: qcom: Add snapshot of IPCC driver""

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qctecmdr 2022-10-17 12:13:08 -07:00 committed by Gerrit - the friendly Code Review server
commit 78d49317e4
4 changed files with 0 additions and 433 deletions
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1
arch/arm64/configs/vendor/pineapple_GKI.config vendored
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@ -107,7 +107,6 @@ CONFIG_QCOM_MEM_BUF_DEV_GH=y
CONFIG_QCOM_MEM_BUF_GH=y
CONFIG_QCOM_MEM_BUF_MSGQ=m
# CONFIG_QCOM_MINIDUMP is not set
# CONFIG_QCOM_MSM_IPCC is not set
CONFIG_QCOM_PANIC_ON_NOTIF_TIMEOUT=y
CONFIG_QCOM_PANIC_ON_PDR_NOTIF_TIMEOUT=y
CONFIG_QCOM_PDC=m

11
drivers/soc/qcom/Kconfig
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@ -86,17 +86,6 @@ config QCOM_GSBI
functions for connecting the underlying serial UART, SPI, and I2C
devices to the output pins.
config QCOM_MSM_IPCC
tristate "Qualcomm Technologies, Inc. IPCC driver"
depends on MAILBOX
help
Qualcomm Technologies, Inc. IPCC driver for MSM devices. The drivers
acts as an interrupt controller for the clients interested in
talking to the IPCC (inbound-communication). On the other hand, the
driver also provides a mailbox channel for outbound-communications.
Say Y here to compile the driver as a part of kernel or M to compile
as a module.
config QCOM_CPUCP
tristate "Qualcomm Technologies, Inc. CPUCP driver"
depends on MAILBOX

1
drivers/soc/qcom/Makefile
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@ -36,7 +36,6 @@ obj-$(CONFIG_QCOM_WDT_CORE) += qcom_wdt_core.o
obj-$(CONFIG_QCOM_SOC_WATCHDOG) += qcom_soc_wdt.o
obj-$(CONFIG_QCOM_STATS) += qcom_stats.o
obj-$(CONFIG_QCOM_WCNSS_CTRL) += wcnss_ctrl.o
obj-$(CONFIG_QCOM_MSM_IPCC) += qcom_ipcc.o
obj-$(CONFIG_QCOM_APR) += apr.o
obj-$(CONFIG_QCOM_EUD) += eud.o
obj-$(CONFIG_QCOM_LLCC) += llcc-qcom.o

420
drivers/soc/qcom/qcom_ipcc.c
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@ -1,420 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
*/
#include <linux/module.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/platform_device.h>
#include <linux/mailbox_controller.h>
#include <dt-bindings/soc/qcom,ipcc.h>
/* IPCC Register offsets */
#define IPCC_REG_SEND_ID 0x0C
#define IPCC_REG_RECV_ID 0x10
#define IPCC_REG_RECV_SIGNAL_ENABLE 0x14
#define IPCC_REG_RECV_SIGNAL_DISABLE 0x18
#define IPCC_REG_RECV_SIGNAL_CLEAR 0x1c
#define IPCC_REG_CLIENT_CLEAR 0x38
#define IPCC_SIGNAL_ID_MASK GENMASK(15, 0)
#define IPCC_CLIENT_ID_MASK GENMASK(31, 16)
#define IPCC_CLIENT_ID_SHIFT 16
#define IPCC_NO_PENDING_IRQ (~(u32)0)
/**
* struct ipcc_protocol_data - Per-protocol data
* @irq_domain: irq_domain associated with this protocol-id
* @mbox: mailbox-controller interface
* @chans: The mailbox clients' channel array (created dynamically)
* @base: Base address of the IPCC frame associated to APPS
* @dev: Device associated with this instance
* @irq: Summary irq
*/
struct ipcc_protocol_data {
struct irq_domain *irq_domain;
struct mbox_controller mbox;
struct mbox_chan *chans;
void __iomem *base;
struct device *dev;
int num_chans;
int irq;
};
/**
* struct ipcc_mbox_chan - Per-mailbox-channel data. Associated to each channel
* requested by the clients
* @client_id: The client-id to which the interrupt has to be triggered
* @signalid: The signal-id to which the interrupt has to be triggered
* @chan: Points to this channel's array element for this protocol's
* ipcc_protocol_data->chans[]
* @proto_data: The pointer to per-protocol data associated to this channel
*/
struct ipcc_mbox_chan {
u16 client_id;
u16 signal_id;
struct mbox_chan *chan;
struct ipcc_protocol_data *proto_data;
};
static inline u32 qcom_ipcc_get_packed_id(u16 client_id, u16 signal_id)
{
return (client_id << IPCC_CLIENT_ID_SHIFT) | signal_id;
}
static inline u16 qcom_ipcc_get_client_id(u32 packed_id)
{
return packed_id >> IPCC_CLIENT_ID_SHIFT;
}
static inline u16 qcom_ipcc_get_signal_id(u32 packed_id)
{
return packed_id & IPCC_SIGNAL_ID_MASK;
}
static irqreturn_t qcom_ipcc_irq_fn(int irq, void *data)
{
struct ipcc_protocol_data *proto_data = data;
u32 packed_id;
int virq;
for (;;) {
packed_id = readl(proto_data->base + IPCC_REG_RECV_ID);
if (packed_id == IPCC_NO_PENDING_IRQ)
break;
virq = irq_find_mapping(proto_data->irq_domain, packed_id);
dev_dbg(proto_data->dev,
"IRQ for client_id: %u; signal_id: %u; virq: %d\n",
qcom_ipcc_get_client_id(packed_id),
qcom_ipcc_get_signal_id(packed_id), virq);
writel(packed_id,
proto_data->base + IPCC_REG_RECV_SIGNAL_CLEAR);
generic_handle_irq(virq);
}
return IRQ_HANDLED;
}
static void qcom_ipcc_mask_irq(struct irq_data *irqd)
{
struct ipcc_protocol_data *proto_data;
irq_hw_number_t hwirq = irqd_to_hwirq(irqd);
u16 sender_client_id = qcom_ipcc_get_client_id(hwirq);
u16 sender_signal_id = qcom_ipcc_get_signal_id(hwirq);
proto_data = irq_data_get_irq_chip_data(irqd);
dev_dbg(proto_data->dev,
"%s: Disabling interrupts for: client_id: %u; signal_id: %u\n",
__func__, sender_client_id, sender_signal_id);
writel(hwirq, proto_data->base + IPCC_REG_RECV_SIGNAL_DISABLE);
}
static void qcom_ipcc_unmask_irq(struct irq_data *irqd)
{
struct ipcc_protocol_data *proto_data;
irq_hw_number_t hwirq = irqd_to_hwirq(irqd);
u16 sender_client_id = qcom_ipcc_get_client_id(hwirq);
u16 sender_signal_id = qcom_ipcc_get_signal_id(hwirq);
proto_data = irq_data_get_irq_chip_data(irqd);
dev_dbg(proto_data->dev,
"%s: Enabling interrupts for: client_id: %u; signal_id: %u\n",
__func__, sender_client_id, sender_signal_id);
writel(hwirq, proto_data->base + IPCC_REG_RECV_SIGNAL_ENABLE);
}
static struct irq_chip qcom_ipcc_irq_chip = {
.name = "ipcc",
.irq_mask = qcom_ipcc_mask_irq,
.irq_unmask = qcom_ipcc_unmask_irq,
.flags = IRQCHIP_SKIP_SET_WAKE,
};
static int qcom_ipcc_domain_map(struct irq_domain *d, unsigned int irq,
irq_hw_number_t hw)
{
struct ipcc_protocol_data *proto_data = d->host_data;
irq_set_chip_and_handler(irq, &qcom_ipcc_irq_chip, handle_level_irq);
irq_set_chip_data(irq, proto_data);
irq_set_noprobe(irq);
return 0;
}
static int
qcom_ipcc_domain_xlate(struct irq_domain *d, struct device_node *node,
const u32 *intspec, unsigned int intsize,
unsigned long *out_hwirq, unsigned int *out_type)
{
struct ipcc_protocol_data *proto_data = d->host_data;
struct device *dev = proto_data->dev;
if (intsize != 3)
return -EINVAL;
*out_hwirq = qcom_ipcc_get_packed_id(intspec[0], intspec[1]);
*out_type = intspec[2] & IRQ_TYPE_SENSE_MASK;
dev_dbg(dev, "%s: hwirq: 0x%lx\n", __func__, *out_hwirq);
return 0;
}
static const struct irq_domain_ops qcom_ipcc_irq_ops = {
.map = qcom_ipcc_domain_map,
.xlate = qcom_ipcc_domain_xlate,
};
static int qcom_ipcc_mbox_send_data(struct mbox_chan *chan, void *data)
{
struct ipcc_mbox_chan *ipcc_mbox_chan = chan->con_priv;
struct ipcc_protocol_data *proto_data = ipcc_mbox_chan->proto_data;
u32 packed_id;
dev_dbg(proto_data->dev,
"%s: Generating IRQ for client_id: %u; signal_id: %u\n",
__func__, ipcc_mbox_chan->client_id, ipcc_mbox_chan->signal_id);
packed_id = qcom_ipcc_get_packed_id(ipcc_mbox_chan->client_id,
ipcc_mbox_chan->signal_id);
writel(packed_id, proto_data->base + IPCC_REG_SEND_ID);
return 0;
}
static void qcom_ipcc_mbox_shutdown(struct mbox_chan *chan)
{
chan->con_priv = NULL;
}
static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox,
const struct of_phandle_args *ph)
{
struct ipcc_protocol_data *proto_data;
struct ipcc_mbox_chan *ipcc_mbox_chan;
struct device *dev;
int chan_id;
proto_data = container_of(mbox, struct ipcc_protocol_data, mbox);
if (WARN_ON(!proto_data))
return ERR_PTR(-EINVAL);
dev = proto_data->dev;
if (ph->args_count != 2)
return ERR_PTR(-EINVAL);
for (chan_id = 0; chan_id < mbox->num_chans; chan_id++) {
ipcc_mbox_chan = proto_data->chans[chan_id].con_priv;
if (!ipcc_mbox_chan)
break;
else if (ipcc_mbox_chan->client_id == ph->args[0] &&
ipcc_mbox_chan->signal_id == ph->args[1])
return ERR_PTR(-EBUSY);
}
if (chan_id >= mbox->num_chans)
return ERR_PTR(-EBUSY);
ipcc_mbox_chan = devm_kzalloc(dev, sizeof(*ipcc_mbox_chan), GFP_KERNEL);
if (!ipcc_mbox_chan)
return ERR_PTR(-ENOMEM);
ipcc_mbox_chan->client_id = ph->args[0];
ipcc_mbox_chan->signal_id = ph->args[1];
ipcc_mbox_chan->chan = &proto_data->chans[chan_id];
ipcc_mbox_chan->proto_data = proto_data;
ipcc_mbox_chan->chan->con_priv = ipcc_mbox_chan;
dev_dbg(dev,
"New mailbox channel: %u for client_id: %u; signal_id: %u\n",
chan_id, ipcc_mbox_chan->client_id,
ipcc_mbox_chan->signal_id);
return ipcc_mbox_chan->chan;
}
static const struct mbox_chan_ops ipcc_mbox_chan_ops = {
.send_data = qcom_ipcc_mbox_send_data,
.shutdown = qcom_ipcc_mbox_shutdown
};
static int qcom_ipcc_setup_mbox(struct ipcc_protocol_data *proto_data,
struct device_node *controller_dn)
{
struct of_phandle_args curr_ph;
struct device_node *client_dn;
struct mbox_controller *mbox;
struct device *dev = proto_data->dev;
int i, j, ret;
/*
* Find out the number of clients interested in this mailbox
* and create channels accordingly.
*/
proto_data->num_chans = 0;
for_each_node_with_property(client_dn, "mboxes") {
if (!of_device_is_available(client_dn))
continue;
i = of_count_phandle_with_args(client_dn,
"mboxes", "#mbox-cells");
for (j = 0; j < i; j++) {
ret = of_parse_phandle_with_args(client_dn, "mboxes",
"#mbox-cells", j, &curr_ph);
of_node_put(curr_ph.np);
if (!ret && curr_ph.np == controller_dn) {
proto_data->num_chans++;
break;
}
}
}
/* If no clients are found, skip registering as a mbox controller */
if (!proto_data->num_chans)
return 0;
proto_data->chans = devm_kcalloc(dev, proto_data->num_chans,
sizeof(struct mbox_chan), GFP_KERNEL);
if (!proto_data->chans)
return -ENOMEM;
mbox = &proto_data->mbox;
mbox->dev = dev;
mbox->num_chans = proto_data->num_chans;
mbox->chans = proto_data->chans;
mbox->ops = &ipcc_mbox_chan_ops;
mbox->of_xlate = qcom_ipcc_mbox_xlate;
mbox->txdone_irq = false;
mbox->txdone_poll = false;
return mbox_controller_register(mbox);
}
static int qcom_ipcc_probe(struct platform_device *pdev)
{
struct ipcc_protocol_data *proto_data;
struct resource *res;
static int id;
int ret;
char *name;
proto_data = devm_kzalloc(&pdev->dev, sizeof(*proto_data), GFP_KERNEL);
if (!proto_data)
return -ENOMEM;
proto_data->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Failed to get the device base address\n");
return -ENODEV;
}
proto_data->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(proto_data->base)) {
dev_err(&pdev->dev, "Failed to ioremap the ipcc base addr\n");
return PTR_ERR(proto_data->base);
}
name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "ipcc_%d", id++);
if (!name)
return -ENOMEM;
proto_data->irq = platform_get_irq(pdev, 0);
if (proto_data->irq < 0) {
dev_err(&pdev->dev, "Failed to get the IRQ\n");
return proto_data->irq;
}
proto_data->irq_domain = irq_domain_add_tree(pdev->dev.of_node,
&qcom_ipcc_irq_ops,
proto_data);
if (!proto_data->irq_domain) {
dev_err(&pdev->dev, "Failed to add irq_domain\n");
return -ENOMEM;
}
ret = qcom_ipcc_setup_mbox(proto_data, pdev->dev.of_node);
if (ret) {
dev_err(&pdev->dev, "Failed to create mailbox\n");
goto err_mbox;
}
ret = devm_request_irq(&pdev->dev, proto_data->irq, qcom_ipcc_irq_fn,
IRQF_TRIGGER_HIGH | IRQF_NO_SUSPEND, name, proto_data);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to register the irq: %d\n", ret);
goto err_req_irq;
}
platform_set_drvdata(pdev, proto_data);
return 0;
err_req_irq:
if (proto_data->num_chans)
mbox_controller_unregister(&proto_data->mbox);
err_mbox:
irq_domain_remove(proto_data->irq_domain);
return ret;
}
static int qcom_ipcc_remove(struct platform_device *pdev)
{
struct ipcc_protocol_data *proto_data = platform_get_drvdata(pdev);
disable_irq_wake(proto_data->irq);
if (proto_data->num_chans)
mbox_controller_unregister(&proto_data->mbox);
irq_domain_remove(proto_data->irq_domain);
return 0;
}
static const struct of_device_id qcom_ipcc_of_match[] = {
{ .compatible = "qcom,ipcc"},
{}
};
MODULE_DEVICE_TABLE(of, qcom_ipcc_of_match);
static struct platform_driver qcom_ipcc_driver = {
.probe = qcom_ipcc_probe,
.remove = qcom_ipcc_remove,
.driver = {
.name = "qcom_ipcc",
.of_match_table = qcom_ipcc_of_match,
},
};
static int __init qcom_ipcc_init(void)
{
int ret;
ret = platform_driver_register(&qcom_ipcc_driver);
if (ret)
pr_err("%s: qcom_ipcc register failed %d\n", __func__, ret);
return ret;
}
arch_initcall(qcom_ipcc_init);
static __exit void qcom_ipcc_exit(void)
{
platform_driver_unregister(&qcom_ipcc_driver);
}
module_exit(qcom_ipcc_exit);
MODULE_DESCRIPTION("Qualcomm IPCC Driver");
MODULE_LICENSE("GPL v2");