New patch to review for coreboot: 319e899 libpayload: Use unsigned long for BARs in *hci_init()

[Nico Huber]

Nico Huber ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/6244

-gerrit

commit 319e8990ccb0e9922bbe33332bf81f213a465ed3
Author: Nico Huber 
Date:   Mon Jul 7 16:33:59 2014 +0200

libpayload: Use unsigned long for BARs in *hci_init()

Using void* for physical addresses leads to much casting and confuses
    developers when to convert from physical to virtual addresses or
    the other way around. When using plain integers for physical addresses
    and pointers for virtual addresses things become much cleaner and we
    won't ever end up dereferencing a physical address.

Change-Id: I24cd53b81c7863b6d14f0cbb4ce8937728b37c1c
    Signed-off-by: Nico Huber 
---
 payloads/libpayload/drivers/usb/ehci.c    | 6 +++---
 payloads/libpayload/drivers/usb/ehci.h    | 2 +-
 payloads/libpayload/drivers/usb/ohci.c    | 6 +++---
 payloads/libpayload/drivers/usb/ohci.h    | 2 +-
 payloads/libpayload/drivers/usb/usbinit.c | 6 +++---
 payloads/libpayload/drivers/usb/xhci.c    | 6 +++---
 payloads/libpayload/drivers/usb/xhci.h    | 2 +-
 7 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/payloads/libpayload/drivers/usb/ehci.c b/payloads/libpayload/drivers/usb/ehci.c
index e58bd38..03d0aef 100644
--- a/payloads/libpayload/drivers/usb/ehci.c
+++ b/payloads/libpayload/drivers/usb/ehci.c
@@ -724,7 +724,7 @@ static u8 *ehci_poll_intr_queue(void *const queue)
 }

hci_t *
-ehci_init (void *bar)
+ehci_init (unsigned long physical_bar)
 {
    int i;
    hci_t *controller = new_controller ();
@@ -751,7 +751,7 @@ ehci_init (void *bar)
    controller->create_intr_queue = ehci_create_intr_queue;
    controller->destroy_intr_queue = ehci_destroy_intr_queue;
    controller->poll_intr_queue = ehci_poll_intr_queue;
-	controller->reg_base = (u32)(unsigned long)bar;
+	controller->reg_base = (u32)physical_bar;
    for (i = 0; i < 128; i++) {
    	controller->devices[i] = 0;
    }
@@ -822,7 +822,7 @@ ehci_pci_init (pcidev_t addr)
    /* default value for frame length adjust */
    pci_write_config8(addr, FLADJ, FLADJ_framelength(60000));

-	controller = ehci_init((void *)(unsigned long)reg_base);
+	controller = ehci_init((unsigned long)reg_base);

return controller;
 }
diff --git a/payloads/libpayload/drivers/usb/ehci.h b/payloads/libpayload/drivers/usb/ehci.h
index c1b1fa9..aa1bcf7 100644
--- a/payloads/libpayload/drivers/usb/ehci.h
+++ b/payloads/libpayload/drivers/usb/ehci.h
@@ -34,7 +34,7 @@
 #include <usb/usb.h>

hci_t *ehci_pci_init (pcidev_t addr);
-hci_t *ehci_init (void *bar);
+hci_t *ehci_init (unsigned long physical_bar);

void ehci_rh_init (usbdev_t *dev);

diff --git a/payloads/libpayload/drivers/usb/ohci.c b/payloads/libpayload/drivers/usb/ohci.c
index edd275b..84547e6 100644
--- a/payloads/libpayload/drivers/usb/ohci.c
+++ b/payloads/libpayload/drivers/usb/ohci.c
@@ -167,7 +167,7 @@ static const char *direction[] = {
 #endif

hci_t *
-ohci_init (void *bar)
+ohci_init (unsigned long physical_bar)
 {
    int i;

@@ -201,7 +201,7 @@ ohci_init (void *bar)
    init_device_entry (controller, 0);
    OHCI_INST (controller)->roothub = controller->devices[0];

-	controller->reg_base = (u32)(unsigned long)bar;
+	controller->reg_base = (u32)physical_bar;
    OHCI_INST (controller)->opreg = (opreg_t*)phys_to_virt(controller->reg_base);
    usb_debug("OHCI Version %x.%x\n", (OHCI_INST (controller)->opreg->HcRevision >> 4) & 0xf, OHCI_INST (controller)->opreg->HcRevision & 0xf);

@@ -263,7 +263,7 @@ ohci_pci_init (pcidev_t addr)
     * OHCI mandates MMIO, so bit 0 is clear */
    reg_base = pci_read_config32 (addr, 0x10) & 0xfffff000;

-	return ohci_init((void *)(unsigned long)reg_base);
+	return ohci_init((unsigned long)reg_base);
 }
 #endif

diff --git a/payloads/libpayload/drivers/usb/ohci.h b/payloads/libpayload/drivers/usb/ohci.h
index 9c31d9c..d810c48 100644
--- a/payloads/libpayload/drivers/usb/ohci.h
+++ b/payloads/libpayload/drivers/usb/ohci.h
@@ -34,7 +34,7 @@
 #include <usb/usb.h>

hci_t *ohci_pci_init (pcidev_t addr);
-hci_t *ohci_init (void *bar);
+hci_t *ohci_init (unsigned long physical_bar);

void ohci_rh_init (usbdev_t *dev);

diff --git a/payloads/libpayload/drivers/usb/usbinit.c b/payloads/libpayload/drivers/usb/usbinit.c
index f74a833..ca0bf76 100644
--- a/payloads/libpayload/drivers/usb/usbinit.c
+++ b/payloads/libpayload/drivers/usb/usbinit.c
@@ -160,13 +160,13 @@ static void usb_scan_pci_bus(int bus)
 static void usb_scan_memory(void)
 {
 #ifdef CONFIG_USB_XHCI
-	xhci_init((void *)(unsigned long)CONFIG_USB_XHCI_BASE_ADDRESS);
+	xhci_init(CONFIG_USB_XHCI_BASE_ADDRESS);
 #endif
 #ifdef CONFIG_USB_EHCI
-	ehci_init((void *)(unsigned long)CONFIG_USB_EHCI_BASE_ADDRESS);
+	ehci_init(CONFIG_USB_EHCI_BASE_ADDRESS);
 #endif
 #ifdef CONFIG_USB_OHCI
-	ohci_init((void *)(unsigned long)CONFIG_USB_OHCI_BASE_ADDRESS);
+	ohci_init(CONFIG_USB_OHCI_BASE_ADDRESS);
 #endif
 }
 #endif
diff --git a/payloads/libpayload/drivers/usb/xhci.c b/payloads/libpayload/drivers/usb/xhci.c
index d9ac0a4..f540230 100644
--- a/payloads/libpayload/drivers/usb/xhci.c
+++ b/payloads/libpayload/drivers/usb/xhci.c
@@ -143,7 +143,7 @@ xhci_wait_ready(xhci_t *const xhci)
 }

hci_t *
-xhci_init (const void *bar)
+xhci_init (unsigned long physical_bar)
 {
    int i;

@@ -192,7 +192,7 @@ xhci_init (const void *bar)
    	goto _free_xhci;
    }

-	controller->reg_base	= (u32)(unsigned long)bar;
+	controller->reg_base	= (u32)physical_bar;

xhci->capreg	= phys_to_virt(controller->reg_base);
    xhci->opreg	= ((void *)xhci->capreg) + xhci->capreg->caplength;
@@ -310,7 +310,7 @@ xhci_pci_init (pcidev_t addr)
    	fatal("We don't do 64bit addressing.\n");
    }

-	controller = xhci_init((void *)(unsigned long)reg_addr);
+	controller = xhci_init((unsigned long)reg_addr);
    controller->pcidev = addr;

xhci_switch_ppt_ports(addr);
diff --git a/payloads/libpayload/drivers/usb/xhci.h b/payloads/libpayload/drivers/usb/xhci.h
index ddc9297..5f15da3 100644
--- a/payloads/libpayload/drivers/usb/xhci.h
+++ b/payloads/libpayload/drivers/usb/xhci.h
@@ -34,7 +34,7 @@
 #include <usb/usb.h>

hci_t *xhci_pci_init (pcidev_t addr);
-hci_t *xhci_init (const void *bar);
+hci_t *xhci_init (unsigned long physical_bar);

void xhci_rh_init (usbdev_t *dev);