xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Tükrözés 0
Kód Hibajegyek Egyesítési kérések Actions Packages Projektek Kiadások Wiki Tevékenység

[PATCH] USB: UHCI: Split apart the physical and logical framelist arrays

Forráskód böngészése 
This patch (as563) splits the physical and logical framelist arrays in
uhci-hcd into two separate pieces.  This will allow slightly better memory
utilization, since each piece is no larger than a single page whereas
before the whole thing was a little bigger than two pages.  It also allows
the logical array to be allocated in non-DMA-coherent memory.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern
2005-09-16 14:22:51 -04:00
committed by Greg Kroah-Hartman
szülő 8b4cd42134
commit a1d59ce842
4 fájl változott, egészen pontosan 44 új sor hozzáadva és 28 régi sor törölve
Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/usb/host/uhci-hcd.c
Fájl megtekintése

@@ -212,7 +212,7 @@ static void configure_hc(struct uhci_hcd *uhci)
outb(USBSOF_DEFAULT, uhci->io_addr + USBSOF);
/* Store the frame list base address */
outl(uhci->fl->dma_handle, uhci->io_addr + USBFLBASEADD);
outl(uhci->frame_dma_handle, uhci->io_addr + USBFLBASEADD);
/* Set the current frame number */
outw(uhci->frame_number, uhci->io_addr + USBFRNUM);
@@ -445,8 +445,11 @@ static void release_uhci(struct uhci_hcd *uhci)
dma_pool_destroy(uhci->td_pool);
dma_free_coherent(uhci_dev(uhci), sizeof(*uhci->fl),
uhci->fl, uhci->fl->dma_handle);
kfree(uhci->frame_cpu);
dma_free_coherent(uhci_dev(uhci),
UHCI_NUMFRAMES * sizeof(*uhci->frame),
uhci->frame, uhci->frame_dma_handle);
debugfs_remove(uhci->dentry);
}
@@ -527,7 +530,6 @@ static int uhci_start(struct usb_hcd *hcd)
struct uhci_hcd *uhci = hcd_to_uhci(hcd);
int retval = -EBUSY;
int i;
dma_addr_t dma_handle;
struct dentry *dentry;
hcd->uses_new_polling = 1;
@@ -561,17 +563,23 @@ static int uhci_start(struct usb_hcd *hcd)
init_waitqueue_head(&uhci->waitqh);
uhci->fl = dma_alloc_coherent(uhci_dev(uhci), sizeof(*uhci->fl),
&dma_handle, 0);
if (!uhci->fl) {
uhci->frame = dma_alloc_coherent(uhci_dev(uhci),
UHCI_NUMFRAMES * sizeof(*uhci->frame),
&uhci->frame_dma_handle, 0);
if (!uhci->frame) {
dev_err(uhci_dev(uhci), "unable to allocate "
"consistent memory for frame list\n");
goto err_alloc_fl;
goto err_alloc_frame;
}
memset(uhci->frame, 0, UHCI_NUMFRAMES * sizeof(*uhci->frame));
memset((void *)uhci->fl, 0, sizeof(*uhci->fl));
uhci->fl->dma_handle = dma_handle;
uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu),
GFP_KERNEL);
if (!uhci->frame_cpu) {
dev_err(uhci_dev(uhci), "unable to allocate "
"memory for frame pointers\n");
goto err_alloc_frame_cpu;
}
uhci->td_pool = dma_pool_create("uhci_td", uhci_dev(uhci),
sizeof(struct uhci_td), 16, 0);
@@ -654,7 +662,7 @@ static int uhci_start(struct usb_hcd *hcd)
irq = 7;
/* Only place we don't use the frame list routines */
uhci->fl->frame[i] = UHCI_PTR_QH |
uhci->frame[i] = UHCI_PTR_QH |
cpu_to_le32(uhci->skelqh[irq]->dma_handle);
}
@@ -686,10 +694,14 @@ err_create_qh_pool:
dma_pool_destroy(uhci->td_pool);
err_create_td_pool:
dma_free_coherent(uhci_dev(uhci), sizeof(*uhci->fl),
uhci->fl, uhci->fl->dma_handle);
kfree(uhci->frame_cpu);
err_alloc_fl:
err_alloc_frame_cpu:
dma_free_coherent(uhci_dev(uhci),
UHCI_NUMFRAMES * sizeof(*uhci->frame),
uhci->frame, uhci->frame_dma_handle);
err_alloc_frame:
debugfs_remove(uhci->dentry);
err_create_debug_entry: