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>,
"Gustavo Pimentel" <gustavo.pimentel@synopsys.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,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH 02/11] PCI: endpoint: Decouple EPC and PCIe bus specific events
Date: Thu, 14 Mar 2024 20:53:41 +0530 [thread overview]
Message-ID: <20240314-pci-epf-rework-v1-2-6134e6c1d491@linaro.org> (raw)
In-Reply-To: <20240314-pci-epf-rework-v1-0-6134e6c1d491@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 1c3e4ea76bd2..e5d67aec7574 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -880,8 +880,11 @@ 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,
@@ -903,7 +906,8 @@ 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 fc0282b0d626..751dab5799d5 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -813,8 +813,11 @@ 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,
};
@@ -959,7 +962,8 @@ 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 ba2ff037dfa6..f602f08a11a2 100644
--- a/drivers/pci/endpoint/pci-epc-core.c
+++ b/drivers/pci/endpoint/pci-epc-core.c
@@ -697,8 +697,8 @@ 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);
@@ -723,8 +723,8 @@ 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);
@@ -749,8 +749,8 @@ 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;
@@ -772,8 +772,8 @@ 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);
}
}
@@ -797,8 +797,8 @@ 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 77b146e0f672..1271e1e00bbd 100644
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -68,14 +68,21 @@ 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);
@@ -149,7 +156,8 @@ 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;
@@ -179,7 +187,8 @@ 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:[~2024-03-14 15:24 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-14 15:23 [PATCH 00/11] PCI: endpoint: Make host reboot handling more robust Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 01/11] PCI: qcom-ep: Disable resources unconditionally during PERST# assert Manivannan Sadhasivam
2024-03-22 16:08 ` Niklas Cassel
2024-03-26 7:44 ` Manivannan Sadhasivam
2024-03-26 10:24 ` Niklas Cassel
2024-03-26 11:10 ` Manivannan Sadhasivam
2024-03-26 13:47 ` Niklas Cassel
2024-03-26 13:55 ` Manivannan Sadhasivam
2024-03-26 10:37 ` Niklas Cassel
2024-03-14 15:23 ` Manivannan Sadhasivam [this message]
2024-03-22 16:08 ` [PATCH 02/11] PCI: endpoint: Decouple EPC and PCIe bus specific events Niklas Cassel
2024-03-26 7:49 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 03/11] PCI: endpoint: Rename core_init() callback in 'struct pci_epc_event_ops' to init() Manivannan Sadhasivam
2024-03-22 16:08 ` Niklas Cassel
2024-03-26 7:56 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 04/11] PCI: epf-test: Refactor pci_epf_test_unbind() function Manivannan Sadhasivam
2024-03-22 16:09 ` Niklas Cassel
2024-03-26 7:58 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 05/11] PCI: epf-{mhi/test}: Move DMA initialization to EPC init callback Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-26 8:26 ` Manivannan Sadhasivam
2024-03-26 11:05 ` Niklas Cassel
2024-03-26 14:27 ` Niklas Cassel
2024-03-27 6:20 ` Manivannan Sadhasivam
2024-03-27 6:18 ` Manivannan Sadhasivam
2024-03-27 11:39 ` Niklas Cassel
2024-03-28 18:42 ` Vinod Koul
2024-04-04 8:44 ` Niklas Cassel
2024-04-22 7:55 ` Manivannan Sadhasivam
2024-04-22 9:30 ` Niklas Cassel
2024-03-14 15:23 ` [PATCH 06/11] PCI: endpoint: Introduce EPC 'deinit' event and notify the EPF drivers Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-26 8:31 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 07/11] PCI: dwc: ep: Add a generic dw_pcie_ep_linkdown() API to handle Link Down event Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-27 18:06 ` Niklas Cassel
2024-04-01 16:34 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 08/11] PCI: qcom-ep: Use the " Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 09/11] PCI: epf-test: Handle " Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-14 15:23 ` [PATCH 10/11] PCI: qcom-ep: Rework {start/stop}_link() callbacks implementation Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-26 8:33 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 11/11] PCI: tegra194: " Manivannan Sadhasivam
2024-03-22 16:11 ` Niklas Cassel
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