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UHCI: Add macros for computing DMA values

Bladeren bron 
This patch (as855) adds some convenience macros to uhci-hcd, to help
simplify the code for computing hardware DMA pointers.

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
2007-02-19 15:51:51 -05:00
gecommit door Greg Kroah-Hartman
bovenliggende d0374f4f9c
commit 28b9325e6a
4 gewijzigde bestanden met toevoegingen van 33 en 36 verwijderingen
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22
drivers/usb/host/uhci-hcd.c
Bestand weergeven

@@ -116,7 +116,7 @@ static __le32 uhci_frame_skel_link(struct uhci_hcd *uhci, int frame)
skelnum = 8 - (int) __ffs(frame | UHCI_NUMFRAMES);
if (skelnum <= 1)
skelnum = 9;
return UHCI_PTR_QH | cpu_to_le32(uhci->skelqh[skelnum]->dma_handle);
return LINK_TO_QH(uhci->skelqh[skelnum]);
}
#include "uhci-debug.c"
@@ -635,25 +635,21 @@ static int uhci_start(struct usb_hcd *hcd)
uhci->skel_int16_qh->link =
uhci->skel_int8_qh->link =
uhci->skel_int4_qh->link =
uhci->skel_int2_qh->link = UHCI_PTR_QH |
cpu_to_le32(uhci->skel_int1_qh->dma_handle);
uhci->skel_int2_qh->link = LINK_TO_QH(
uhci->skel_int1_qh);
uhci->skel_int1_qh->link = UHCI_PTR_QH |
cpu_to_le32(uhci->skel_ls_control_qh->dma_handle);
uhci->skel_ls_control_qh->link = UHCI_PTR_QH |
cpu_to_le32(uhci->skel_fs_control_qh->dma_handle);
uhci->skel_fs_control_qh->link = UHCI_PTR_QH |
cpu_to_le32(uhci->skel_bulk_qh->dma_handle);
uhci->skel_bulk_qh->link = UHCI_PTR_QH |
cpu_to_le32(uhci->skel_term_qh->dma_handle);
uhci->skel_int1_qh->link = LINK_TO_QH(uhci->skel_ls_control_qh);
uhci->skel_ls_control_qh->link = LINK_TO_QH(uhci->skel_fs_control_qh);
uhci->skel_fs_control_qh->link = LINK_TO_QH(uhci->skel_bulk_qh);
uhci->skel_bulk_qh->link = LINK_TO_QH(uhci->skel_term_qh);
/* This dummy TD is to work around a bug in Intel PIIX controllers */
uhci_fill_td(uhci->term_td, 0, uhci_explen(0) |
(0x7f << TD_TOKEN_DEVADDR_SHIFT) | USB_PID_IN, 0);
uhci->term_td->link = cpu_to_le32(uhci->term_td->dma_handle);
uhci->term_td->link = LINK_TO_TD(uhci->term_td);
uhci->skel_term_qh->link = UHCI_PTR_TERM;
uhci->skel_term_qh->element = cpu_to_le32(uhci->term_td->dma_handle);
uhci->skel_term_qh->element = LINK_TO_TD(uhci->term_td);
/*
* Fill the frame list: make all entries point to the proper