Add file missing from previous checkin

Add file missing from checkin 012d53b0453ac7a5ec03fb802434fe64e6f85bf5

diff --git a/core/pxeidle.inc b/core/pxeidle.inc
new file mode 100644 (file)
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--- /dev/null
+++ b/core/pxeidle.inc
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+;; -*- fundamental -*- ---------------------------------------------------
+;;
+;;   Copyright 2008 H. Peter Anvin - All Rights Reserved
+;;
+;;   This program is free software; you can redistribute it and/or modify
+;;   it under the terms of the GNU General Public License as published by
+;;   the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+;;   Boston MA 02110-1301, USA; either version 2 of the License, or
+;;   (at your option) any later version; incorporated herein by reference.
+;;
+;; -----------------------------------------------------------------------
+
+;;
+;; pxeidle.inc
+;;
+;;
+;; Query for the NIC type, and detect certain special cases.
+;;
+
+               section .text
+
+;;
+;; Initializes the idle mechanism based on the device type
+;;
+;;     Assumes CS == DS == ES
+;;
+pxe_detect_nic_type:
+               pushad
+
+               mov di,pxenv_get_nic_type
+               mov bx,PXENV_UNDI_GET_NIC_TYPE
+               call pxenv
+               jc .done
+               cmp word [di],0
+               jne .done
+               cmp byte [di+2],2               ; PCI_NIC
+               jne .done                       ; No list for non-PCI nics
+
+               mov cx,pxe_idle_pci_list.len
+               mov si,pxe_idle_pci_list
+.look_for_id:
+               lodsd
+               cmp eax,[di+3]                  ; VID:DID
+               je .found_device
+               loop .look_for_id
+.done:
+               popad
+               ret
+
+.found_device:
+               and byte [feature_flags],~2
+               jmp .done
+
+;;
+;; List of devices for which we want to actually issue idle calls.
+;;
+               section .data
+               align 4, db 0
+pxe_idle_pci_list:
+;
+; Older Broadcom NICs; these need idle calls to avoid FIFO stalls.
+;
+               dw 0x14e4, 0x1659               ; BCM5721
+               dw 0x14e4, 0x165a               ; BCM5722
+               dw 0x14e4, 0x165b               ; BCM5723
+               dw 0x14e4, 0x1668               ; BCM5714
+               dw 0x14e4, 0x1669               ; BCM5714S
+               dw 0x14e4, 0x166a               ; BCM5780
+               dw 0x14e4, 0x166b               ; BCM5780S
+               dw 0x14e4, 0x1673               ; BCM5755M
+               dw 0x14e4, 0x1674               ; BCM5756ME
+               dw 0x14e4, 0x1678               ; BCM5715
+               dw 0x14e4, 0x1679               ; BCM5715S
+               dw 0x14e4, 0x167b               ; BCM5755
+;
+.len           equ ($-pxe_idle_pci_list) >> 2
+
+               section .bss
+pxenv_get_nic_type:
+.status:       resw 1
+.nic_type:     resb 1
+.vid:          resw 1
+.did:          resw 1
+.base_class:   resb 1
+.sub_class:    resb 1
+.prog_intf:    resb 1
+.rev:          resb 1
+.busdevfunc:   resw 1
+.svid:         resw 1
+.sdid:         resw 1
+
+               section .text