lkml.org 
[lkml]   [2022]   [Oct]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 4/4] PCI: endpoint: Add deinit in epf test driver
Date
Add support for clearing the BAR info during the deinitialization phase of
the epf test driver.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
V2:
* This is a new patch in this series

drivers/pci/endpoint/functions/pci-epf-test.c | 30 +++++++++++++++++++
1 file changed, 30 insertions(+)

diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 136470019a24..25ac3d161fac 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -826,6 +826,35 @@ static int pci_epf_test_core_init(struct pci_epf *epf)
return 0;
}

+static int pci_epf_test_clear_bar(struct pci_epf *epf)
+{
+ int bar, add;
+ struct pci_epf_bar *epf_bar;
+ struct pci_epc *epc = epf->epc;
+ struct pci_epf_test *epf_test = epf_get_drvdata(epf);
+ const struct pci_epc_features *epc_features;
+
+ epc_features = epf_test->epc_features;
+
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar += add) {
+ epf_bar = &epf->bar[bar];
+ add = (epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ? 2 : 1;
+
+ if (!!(epc_features->reserved_bar & (1 << bar)))
+ continue;
+
+ pci_epc_clear_bar(epc, epf->func_no, epf->vfunc_no, epf_bar);
+ }
+
+ return 0;
+}
+
+static int pci_epf_test_core_deinit(struct pci_epf *epf)
+{
+ pci_epf_test_clear_bar(epf);
+ return 0;
+}
+
int pci_epf_test_link_up(struct pci_epf *epf)
{
struct pci_epf_test *epf_test = epf_get_drvdata(epf);
@@ -839,6 +868,7 @@ int pci_epf_test_link_up(struct pci_epf *epf)
static const struct pci_epc_event_ops pci_epf_test_event_ops = {
.core_init = pci_epf_test_core_init,
.link_up = pci_epf_test_link_up,
+ .core_deinit = pci_epf_test_core_deinit,
};

static int pci_epf_test_alloc_space(struct pci_epf *epf)
--
2.17.1
\
 
 \ /
  Last update: 2022-10-13 20:27    [W:0.386 / U:0.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site