Decouple BAR reading from pci device init, handle errors gracefully

Pcidev_init() now returns struct pci_device * instead of a BAR stored in
PCI config space. This allows for real error checking instead of having
exit(1) everywhere in pcidev.c.
Thanks to Niklas Söderlund for coming up with the original error
handling patch which was slightly modified and folded into this patch.
Move the declaration of struct pci_device in programmer.h before the
first user.

Corresponding to flashrom svn r1644.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>

1 files changed, 6 insertions, 6 deletions

diff --git a/satamv.c b/satamv.c
index 46a0e2d..c3f27e7 100644
--- a/satamv.c
+++ b/satamv.c
@@ -81,6 +81,7 @@ static int satamv_shutdown(void *data)
  */
 int satamv_init(void)
 {
+	struct pci_dev *dev = NULL;
 	uintptr_t addr;
 	uint32_t tmp;
 
@@ -88,11 +89,11 @@ int satamv_init(void)
 		return 1;
 
 	/* BAR0 has all internal registers memory mapped. */
-	/* No need to check for errors, pcidev_init() will not return in case
-	 * of errors.
-	 */
-	addr = pcidev_init(PCI_BASE_ADDRESS_0, satas_mv);
+	dev = pcidev_init(satas_mv, PCI_BASE_ADDRESS_0);
+	if (!dev)
+		return 1;
 
+	addr = pcidev_readbar(dev, PCI_BASE_ADDRESS_0);
 	mv_bar = physmap("Marvell 88SX7042 registers", addr, 0x20000);
 	if (mv_bar == ERROR_PTR)
 		return 1;
@@ -143,8 +144,7 @@ int satamv_init(void)
 	pci_rmmio_writel(tmp, mv_bar + GPIO_PORT_CONTROL);
 
 	/* Get I/O BAR location. */
-	tmp = pci_read_long(pcidev_dev, PCI_BASE_ADDRESS_2) &
-	      PCI_BASE_ADDRESS_IO_MASK;
+	tmp = pcidev_readbar(dev, PCI_BASE_ADDRESS_2);
 	/* Truncate to reachable range.
 	 * FIXME: Check if the I/O BAR is actually reachable.
 	 * This is an arch specific check.