[v2,4/9] PCI: endpoint: pci-epf-test: Simplify pci_epf_test_alloc_space() loop

Commit Message

Niklas Cassel March 12, 2024, 10:51 a.m. UTC

Make pci-epf-test use pci_epc_get_next_free_bar() just like pci-epf-ntb.c
and pci-epf-vntb.c.

Using pci_epc_get_next_free_bar() also makes it more obvious that
pci-epf-test does no special configuration at all.

This way, the code is more consistent between EPF drivers, and pci-epf-test
does not need to explicitly check if the BAR is reserved, or if the index
belongs to a BAR succeeding a 64-bit only BAR.

Signed-off-by: Niklas Cassel <[e-mail]>
---
 drivers/pci/endpoint/functions/pci-epf-test.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

Patch

diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 7dc9704128dc..20c79610712d 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -823,8 +823,8 @@  static int pci_epf_test_alloc_space(struct pci_epf *epf)
 	size_t pba_size = 0;
 	bool msix_capable;
 	void *base;
-	int bar, add;
 	enum pci_barno test_reg_bar = epf_test->test_reg_bar;
+	enum pci_barno bar;
 	const struct pci_epc_features *epc_features;
 	size_t test_reg_size;
 
@@ -849,16 +849,14 @@  static int pci_epf_test_alloc_space(struct pci_epf *epf)
 	}
 	epf_test->reg[test_reg_bar] = base;
 
-	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;
+	for (bar = BAR_0; bar < PCI_STD_NUM_BARS; bar++) {
+		bar = pci_epc_get_next_free_bar(epc_features, bar);
+		if (bar == NO_BAR)
+			break;
 
 		if (bar == test_reg_bar)
 			continue;
 
-		if (epc_features->bar[bar].type == BAR_RESERVED)
-			continue;
-
 		base = pci_epf_alloc_space(epf, bar_size[bar], bar,
 					   epc_features, PRIMARY_INTERFACE);
 		if (!base)
@@ -871,7 +869,9 @@  static int pci_epf_test_alloc_space(struct pci_epf *epf)
 		 * either because the BAR can only be a 64-bit BAR, or if
 		 * we requested a size larger than 4 GB.
 		 */
-		add = (epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ? 2 : 1;
+		epf_bar = &epf->bar[bar];
+		if (epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64)
+			bar++;
 	}
 
 	return 0;