From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Kishon Vijay Abraham I" <kishon@kernel.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Jingoo Han" <jingoohan1@gmail.com>
Cc: linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, mhi@lists.linux.dev,
linux-tegra@vger.kernel.org, Niklas Cassel <cassel@kernel.org>,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH v2 02/10] PCI: endpoint: Decouple EPC and PCIe bus specific events
Date: Mon, 01 Apr 2024 21:20:28 +0530 [thread overview]
Message-ID: <20240401-pci-epf-rework-v2-2-970dbe90b99d@linaro.org> (raw)
In-Reply-To: <20240401-pci-epf-rework-v2-0-970dbe90b99d@linaro.org>
Currently, 'struct pci_epc_event_ops' has a bunch of events that are sent
from the EPC driver to EPF driver. But those events are a mix of EPC
specific events like core_init and PCIe bus specific events like LINK_UP,
LINK_DOWN, BME etc...
Let's decouple them to respective structs (pci_epc_event_ops,
pci_epc_bus_event_ops) to make the separation clear.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/pci/endpoint/functions/pci-epf-mhi.c | 8 ++++++--
drivers/pci/endpoint/functions/pci-epf-test.c | 8 ++++++--
drivers/pci/endpoint/pci-epc-core.c | 20 ++++++++++----------
include/linux/pci-epf.h | 23 ++++++++++++++++-------
4 files changed, 38 insertions(+), 21 deletions(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index 2c54d80107cf..280863c0eeb9 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -896,8 +896,11 @@ static void pci_epf_mhi_unbind(struct pci_epf *epf)
pci_epc_clear_bar(epc, epf->func_no, epf->vfunc_no, epf_bar);
}
-static const struct pci_epc_event_ops pci_epf_mhi_event_ops = {
+static const struct pci_epc_event_ops pci_epf_mhi_epc_event_ops = {
.core_init = pci_epf_mhi_core_init,
+};
+
+static const struct pci_epc_bus_event_ops pci_epf_mhi_bus_event_ops = {
.link_up = pci_epf_mhi_link_up,
.link_down = pci_epf_mhi_link_down,
.bme = pci_epf_mhi_bme,
@@ -919,7 +922,8 @@ static int pci_epf_mhi_probe(struct pci_epf *epf,
epf_mhi->info = info;
epf_mhi->epf = epf;
- epf->event_ops = &pci_epf_mhi_event_ops;
+ epf->epc_event_ops = &pci_epf_mhi_epc_event_ops;
+ epf->bus_event_ops = &pci_epf_mhi_bus_event_ops;
mutex_init(&epf_mhi->lock);
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 977fb79c1567..973db0b1bde2 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -798,8 +798,11 @@ static int pci_epf_test_link_up(struct pci_epf *epf)
return 0;
}
-static const struct pci_epc_event_ops pci_epf_test_event_ops = {
+static const struct pci_epc_event_ops pci_epf_test_epc_event_ops = {
.core_init = pci_epf_test_core_init,
+};
+
+static const struct pci_epc_bus_event_ops pci_epf_test_bus_event_ops = {
.link_up = pci_epf_test_link_up,
};
@@ -916,7 +919,8 @@ static int pci_epf_test_probe(struct pci_epf *epf,
INIT_DELAYED_WORK(&epf_test->cmd_handler, pci_epf_test_cmd_handler);
- epf->event_ops = &pci_epf_test_event_ops;
+ epf->epc_event_ops = &pci_epf_test_epc_event_ops;
+ epf->bus_event_ops = &pci_epf_test_bus_event_ops;
epf_set_drvdata(epf, epf_test);
return 0;
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c
index 47d27ec7439d..f202ae07ffa9 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -692,8 +692,8 @@ void pci_epc_linkup(struct pci_epc *epc)
mutex_lock(&epc->list_lock);
list_for_each_entry(epf, &epc->pci_epf, list) {
mutex_lock(&epf->lock);
- if (epf->event_ops && epf->event_ops->link_up)
- epf->event_ops->link_up(epf);
+ if (epf->bus_event_ops && epf->bus_event_ops->link_up)
+ epf->bus_event_ops->link_up(epf);
mutex_unlock(&epf->lock);
}
mutex_unlock(&epc->list_lock);
@@ -718,8 +718,8 @@ void pci_epc_linkdown(struct pci_epc *epc)
mutex_lock(&epc->list_lock);
list_for_each_entry(epf, &epc->pci_epf, list) {
mutex_lock(&epf->lock);
- if (epf->event_ops && epf->event_ops->link_down)
- epf->event_ops->link_down(epf);
+ if (epf->bus_event_ops && epf->bus_event_ops->link_down)
+ epf->bus_event_ops->link_down(epf);
mutex_unlock(&epf->lock);
}
mutex_unlock(&epc->list_lock);
@@ -744,8 +744,8 @@ void pci_epc_init_notify(struct pci_epc *epc)
mutex_lock(&epc->list_lock);
list_for_each_entry(epf, &epc->pci_epf, list) {
mutex_lock(&epf->lock);
- if (epf->event_ops && epf->event_ops->core_init)
- epf->event_ops->core_init(epf);
+ if (epf->epc_event_ops && epf->epc_event_ops->core_init)
+ epf->epc_event_ops->core_init(epf);
mutex_unlock(&epf->lock);
}
epc->init_complete = true;
@@ -767,8 +767,8 @@ void pci_epc_notify_pending_init(struct pci_epc *epc, struct pci_epf *epf)
{
if (epc->init_complete) {
mutex_lock(&epf->lock);
- if (epf->event_ops && epf->event_ops->core_init)
- epf->event_ops->core_init(epf);
+ if (epf->epc_event_ops && epf->epc_event_ops->core_init)
+ epf->epc_event_ops->core_init(epf);
mutex_unlock(&epf->lock);
}
}
@@ -792,8 +792,8 @@ void pci_epc_bme_notify(struct pci_epc *epc)
mutex_lock(&epc->list_lock);
list_for_each_entry(epf, &epc->pci_epf, list) {
mutex_lock(&epf->lock);
- if (epf->event_ops && epf->event_ops->bme)
- epf->event_ops->bme(epf);
+ if (epf->bus_event_ops && epf->bus_event_ops->bme)
+ epf->bus_event_ops->bme(epf);
mutex_unlock(&epf->lock);
}
mutex_unlock(&epc->list_lock);
diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index adee6a1b35db..77399fecaeb5 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -69,14 +69,21 @@ struct pci_epf_ops {
};
/**
- * struct pci_epc_event_ops - Callbacks for capturing the EPC events
- * @core_init: Callback for the EPC initialization complete event
- * @link_up: Callback for the EPC link up event
- * @link_down: Callback for the EPC link down event
- * @bme: Callback for the EPC BME (Bus Master Enable) event
+ * struct pci_epc_event_ops - Callbacks for capturing the EPC specific events
+ * @core_init: Callback for the EPC initialization event
*/
struct pci_epc_event_ops {
int (*core_init)(struct pci_epf *epf);
+};
+
+/**
+ * struct pci_epc_bus_event_ops - Callbacks for capturing the PCIe bus specific
+ * events
+ * @link_up: Callback for the PCIe bus link up event
+ * @link_down: Callback for the PCIe bus link down event
+ * @bme: Callback for the PCIe bus BME (Bus Master Enable) event
+ */
+struct pci_epc_bus_event_ops {
int (*link_up)(struct pci_epf *epf);
int (*link_down)(struct pci_epf *epf);
int (*bme)(struct pci_epf *epf);
@@ -150,7 +157,8 @@ struct pci_epf_bar {
* @is_vf: true - virtual function, false - physical function
* @vfunction_num_map: bitmap to manage virtual function number
* @pci_vepf: list of virtual endpoint functions associated with this function
- * @event_ops: Callbacks for capturing the EPC events
+ * @epc_event_ops: Callbacks for capturing the EPC events
+ * @bus_event_ops: Callbacks for capturing the PCIe bus events
*/
struct pci_epf {
struct device dev;
@@ -180,7 +188,8 @@ struct pci_epf {
unsigned int is_vf;
unsigned long vfunction_num_map;
struct list_head pci_vepf;
- const struct pci_epc_event_ops *event_ops;
+ const struct pci_epc_event_ops *epc_event_ops;
+ const struct pci_epc_bus_event_ops *bus_event_ops;
};
/**
--
2.25.1
next prev parent reply other threads:[~2024-04-01 15:50 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-01 15:50 [PATCH v2 00/10] PCI: endpoint: Make host reboot handling more robust Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 01/10] PCI: qcom-ep: Disable resources unconditionally during PERST# assert Manivannan Sadhasivam
2024-04-01 15:50 ` Manivannan Sadhasivam [this message]
2024-04-02 0:14 ` [PATCH v2 02/10] PCI: endpoint: Decouple EPC and PCIe bus specific events Damien Le Moal
2024-04-03 14:26 ` Manivannan Sadhasivam
2024-04-04 2:40 ` Damien Le Moal
2024-04-01 15:50 ` [PATCH v2 03/10] PCI: endpoint: Rename core_init() callback in 'struct pci_epc_event_ops' to init() Manivannan Sadhasivam
2024-04-02 10:52 ` Niklas Cassel
2024-04-03 13:46 ` Manivannan Sadhasivam
2024-04-03 15:51 ` Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 04/10] PCI: epf-test: Refactor pci_epf_test_unbind() function Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 05/10] PCI: epf-{mhi/test}: Move DMA initialization to EPC init callback Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 06/10] PCI: endpoint: Introduce EPC 'deinit' event and notify the EPF drivers Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 07/10] PCI: dwc: ep: Add a generic dw_pcie_ep_linkdown() API to handle Link Down event Manivannan Sadhasivam
2024-04-02 10:52 ` Niklas Cassel
2024-04-01 15:50 ` [PATCH v2 08/10] PCI: qcom-ep: Use the " Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 09/10] PCI: epf-test: Handle " Manivannan Sadhasivam
2024-04-01 15:50 ` [PATCH v2 10/10] PCI: qcom: Implement shutdown() callback to properly reset the endpoint devices Manivannan Sadhasivam
2024-04-02 11:18 ` Niklas Cassel
2024-04-03 13:32 ` Manivannan Sadhasivam
2024-04-03 20:03 ` Niklas Cassel
2024-04-09 13:31 ` Bjorn Helgaas
2024-04-10 10:54 ` Manivannan Sadhasivam
2024-04-10 14:52 ` Niklas Cassel
2024-04-10 21:10 ` Niklas Cassel
2024-04-12 6:32 ` Manivannan Sadhasivam
2024-04-02 9:41 ` [PATCH v2 00/10] PCI: endpoint: Make host reboot handling more robust Niklas Cassel
2024-04-03 13:48 ` Manivannan Sadhasivam
2024-04-08 9:49 ` Niklas Cassel
2024-04-02 10:52 ` Niklas Cassel
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