| 12,77 → 12,6 |
|---|
| |
| ; Data for one pool: dd pointer to the first page, MUTEX lock. |
| |
| uglobal |
| ; Structures in UHCI and OHCI have equal sizes. |
| ; Thus, functions and data for allocating/freeing can be shared; |
| ; we keep them here rather than in controller-specific files. |
| align 4 |
| ; Data for UHCI and OHCI endpoints pool. |
| usb1_ep_first_page dd ? |
| usb1_ep_mutex MUTEX |
| ; Data for UHCI and OHCI general transfer descriptors pool. |
| usb_gtd_first_page dd ? |
| usb_gtd_mutex MUTEX |
| endg |
| |
| ; sanity check: structures in UHCI and OHCI should be the same for allocation |
| if (sizeof.ohci_pipe = sizeof.uhci_pipe) |
| |
| ; Allocates one endpoint structure for UHCI/OHCI. |
| ; Returns pointer to software part (usb_pipe) in eax. |
| proc usb1_allocate_endpoint |
| push ebx |
| mov ebx, usb1_ep_mutex |
| stdcall usb_allocate_common, (sizeof.ohci_pipe + sizeof.usb_pipe + 0Fh) and not 0Fh |
| test eax, eax |
| jz @f |
| add eax, sizeof.ohci_pipe |
| @@: |
| pop ebx |
| ret |
| endp |
| |
| ; Free one endpoint structure for UHCI/OHCI. |
| ; Stdcall with one argument, pointer to software part (usb_pipe). |
| proc usb1_free_endpoint |
| sub dword [esp+4], sizeof.ohci_pipe |
| jmp usb_free_common |
| endp |
| |
| else |
| ; sanity check continued |
| .err allocate_endpoint/free_endpoint must be different for OHCI and UHCI |
| end if |
| |
| ; sanity check: structures in UHCI and OHCI should be the same for allocation |
| if (sizeof.ohci_gtd = sizeof.uhci_gtd) |
| |
| ; Allocates one general transfer descriptor structure for UHCI/OHCI. |
| ; Returns pointer to software part (usb_gtd) in eax. |
| proc usb1_allocate_general_td |
| push ebx |
| mov ebx, usb_gtd_mutex |
| stdcall usb_allocate_common, (sizeof.ohci_gtd + sizeof.usb_gtd + 0Fh) and not 0Fh |
| test eax, eax |
| jz @f |
| add eax, sizeof.ohci_gtd |
| @@: |
| pop ebx |
| ret |
| endp |
| |
| ; Free one general transfer descriptor structure for UHCI/OHCI. |
| ; Stdcall with one argument, pointer to software part (usb_gtd). |
| proc usb1_free_general_td |
| sub dword [esp+4], sizeof.ohci_gtd |
| jmp usb_free_common |
| endp |
| |
| else |
| ; sanity check continued |
| .err allocate_general_td/free_general_td must be different for OHCI and UHCI |
| end if |
| |
| ; Allocator for fixed-size blocks: allocate a block. |
| ; [ebx-4] = pointer to the first page, ebx = pointer to MUTEX structure. |
| proc usb_allocate_common |
| 187,12 → 116,12 |
|---|
| ret 4 |
| endp |
| |
| ; Helper procedure for OHCI: translate physical address in ecx |
| ; Helper procedure: translate physical address in ecx |
| ; of some transfer descriptor to linear address. |
| ; in: eax = address of first page |
| proc usb_td_to_virt |
| ; Traverse all pages used for transfer descriptors, looking for the one |
| ; with physical address as in ecx. |
| mov eax, [usb_gtd_first_page] |
| @@: |
| test eax, eax |
| jz .zero |