diff --git a/kernel/branches/net/drivers/i8254x.asm b/kernel/branches/net/drivers/i8254x.asm new file mode 100644 index 0000000000..430cb4e299 --- /dev/null +++ b/kernel/branches/net/drivers/i8254x.asm @@ -0,0 +1,763 @@ +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;; +;; Distributed under terms of the GNU General Public License ;; +;; ;; +;; i8254x driver for KolibriOS ;; +;; ;; +;; based on i8254x.asm from baremetal os ;; +;; ;; +;; Written by hidnplayr (hidnplayr@gmail.com) ;; +;; ;; +;; GNU GENERAL PUBLIC LICENSE ;; +;; Version 2, June 1991 ;; +;; ;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; + + ; TODO: make better use of the available descriptors + +format MS COFF + + API_VERSION = 0x01000100 + DRIVER_VERSION = 5 + + MAX_DEVICES = 16 + + DEBUG = 1 + __DEBUG__ = 1 + __DEBUG_LEVEL__ = 1 + + MAX_PKT_SIZE = 16384 ; Maximum packet size + + +include 'proc32.inc' +include 'imports.inc' +include 'fdo.inc' +include '../struct.inc' +include 'netdrv.inc' + +public START +public service_proc +public version + + + +; Register list +REG_CTRL = 0x0000 ; Control Register +REG_STATUS = 0x0008 ; Device Status Register +REG_CTRLEXT = 0x0018 ; Extended Control Register +REG_MDIC = 0x0020 ; MDI Control Register +REG_FCAL = 0x0028 ; Flow Control Address Low +REG_FCAH = 0x002C ; Flow Control Address High +REG_FCT = 0x0030 ; Flow Control Type +REG_VET = 0x0038 ; VLAN Ether Type +REG_ICR = 0x00C0 ; Interrupt Cause Read +REG_ITR = 0x00C4 ; Interrupt Throttling Register +REG_ICS = 0x00C8 ; Interrupt Cause Set Register +REG_IMS = 0x00D0 ; Interrupt Mask Set/Read Register +REG_IMC = 0x00D8 ; Interrupt Mask Clear Register +REG_RCTL = 0x0100 ; Receive Control Register +REG_FCTTV = 0x0170 ; Flow Control Transmit Timer Value +REG_TXCW = 0x0178 ; Transmit Configuration Word +REG_RXCW = 0x0180 ; Receive Configuration Word +REG_TCTL = 0x0400 ; Transmit Control Register +REG_TIPG = 0x0410 ; Transmit Inter Packet Gap + +REG_LEDCTL = 0x0E00 ; LED Control +REG_PBA = 0x1000 ; Packet Buffer Allocation + +REG_RDBAL = 0x2800 ; RX Descriptor Base Address Low +REG_RDBAH = 0x2804 ; RX Descriptor Base Address High +REG_RDLEN = 0x2808 ; RX Descriptor Length +REG_RDH = 0x2810 ; RX Descriptor Head +REG_RDT = 0x2818 ; RX Descriptor Tail +REG_RDTR = 0x2820 ; RX Delay Timer Register +REG_RXDCTL = 0x3828 ; RX Descriptor Control +REG_RADV = 0x282C ; RX Int. Absolute Delay Timer +REG_RSRPD = 0x2C00 ; RX Small Packet Detect Interrupt + +REG_TXDMAC = 0x3000 ; TX DMA Control +REG_TDBAL = 0x3800 ; TX Descriptor Base Address Low +REG_TDBAH = 0x3804 ; TX Descriptor Base Address High +REG_TDLEN = 0x3808 ; TX Descriptor Length +REG_TDH = 0x3810 ; TX Descriptor Head +REG_TDT = 0x3818 ; TX Descriptor Tail +REG_TIDV = 0x3820 ; TX Interrupt Delay Value +REG_TXDCTL = 0x3828 ; TX Descriptor Control +REG_TADV = 0x382C ; TX Absolute Interrupt Delay Value +REG_TSPMT = 0x3830 ; TCP Segmentation Pad & Min Threshold + +REG_RXCSUM = 0x5000 ; RX Checksum Control + +; Register list for i8254x +I82542_REG_RDTR = 0x0108 ; RX Delay Timer Register +I82542_REG_RDBAL = 0x0110 ; RX Descriptor Base Address Low +I82542_REG_RDBAH = 0x0114 ; RX Descriptor Base Address High +I82542_REG_RDLEN = 0x0118 ; RX Descriptor Length +I82542_REG_RDH = 0x0120 ; RDH for i82542 +I82542_REG_RDT = 0x0128 ; RDT for i82542 +I82542_REG_TDBAL = 0x0420 ; TX Descriptor Base Address Low +I82542_REG_TDBAH = 0x0424 ; TX Descriptor Base Address Low +I82542_REG_TDLEN = 0x0428 ; TX Descriptor Length +I82542_REG_TDH = 0x0430 ; TDH for i82542 +I82542_REG_TDT = 0x0438 ; TDT for i82542 + +; CTRL - Control Register (0x0000) +CTRL_FD = 0x00000001 ; Full Duplex +CTRL_LRST = 0x00000008 ; Link Reset +CTRL_ASDE = 0x00000020 ; Auto-speed detection +CTRL_SLU = 0x00000040 ; Set Link Up +CTRL_ILOS = 0x00000080 ; Invert Loss of Signal +CTRL_SPEED_MASK = 0x00000300 ; Speed selection +CTRL_SPEED_SHIFT = 8 +CTRL_FRCSPD = 0x00000800 ; Force Speed +CTRL_FRCDPLX = 0x00001000 ; Force Duplex +CTRL_SDP0_DATA = 0x00040000 ; SDP0 data +CTRL_SDP1_DATA = 0x00080000 ; SDP1 data +CTRL_SDP0_IODIR = 0x00400000 ; SDP0 direction +CTRL_SDP1_IODIR = 0x00800000 ; SDP1 direction +CTRL_RST = 0x04000000 ; Device Reset +CTRL_RFCE = 0x08000000 ; RX Flow Ctrl Enable +CTRL_TFCE = 0x10000000 ; TX Flow Ctrl Enable +CTRL_VME = 0x40000000 ; VLAN Mode Enable +CTRL_PHY_RST = 0x80000000 ; PHY reset + +; STATUS - Device Status Register (0x0008) +STATUS_FD = 0x00000001 ; Full Duplex +STATUS_LU = 0x00000002 ; Link Up +STATUS_TXOFF = 0x00000010 ; Transmit paused +STATUS_TBIMODE = 0x00000020 ; TBI Mode +STATUS_SPEED_MASK = 0x000000C0 ; Link Speed setting +STATUS_SPEED_SHIFT = 6 +STATUS_ASDV_MASK = 0x00000300 ; Auto Speed Detection +STATUS_ASDV_SHIFT = 8 +STATUS_PCI66 = 0x00000800 ; PCI bus speed +STATUS_BUS64 = 0x00001000 ; PCI bus width +STATUS_PCIX_MODE = 0x00002000 ; PCI-X mode +STATUS_PCIXSPD_MASK = 0x0000C000 ; PCI-X speed +STATUS_PCIXSPD_SHIFT = 14 + +; CTRL_EXT - Extended Device Control Register (0x0018) +CTRLEXT_PHY_INT = 0x00000020 ; PHY interrupt +CTRLEXT_SDP6_DATA = 0x00000040 ; SDP6 data +CTRLEXT_SDP7_DATA = 0x00000080 ; SDP7 data +CTRLEXT_SDP6_IODIR = 0x00000400 ; SDP6 direction +CTRLEXT_SDP7_IODIR = 0x00000800 ; SDP7 direction +CTRLEXT_ASDCHK = 0x00001000 ; Auto-Speed Detect Chk +CTRLEXT_EE_RST = 0x00002000 ; EEPROM reset +CTRLEXT_SPD_BYPS = 0x00008000 ; Speed Select Bypass +CTRLEXT_RO_DIS = 0x00020000 ; Relaxed Ordering Dis. +CTRLEXT_LNKMOD_MASK = 0x00C00000 ; Link Mode +CTRLEXT_LNKMOD_SHIFT = 22 + +; MDIC - MDI Control Register (0x0020) +MDIC_DATA_MASK = 0x0000FFFF ; Data +MDIC_REG_MASK = 0x001F0000 ; PHY Register +MDIC_REG_SHIFT = 16 +MDIC_PHY_MASK = 0x03E00000 ; PHY Address +MDIC_PHY_SHIFT = 21 +MDIC_OP_MASK = 0x0C000000 ; Opcode +MDIC_OP_SHIFT = 26 +MDIC_R = 0x10000000 ; Ready +MDIC_I = 0x20000000 ; Interrupt Enable +MDIC_E = 0x40000000 ; Error + +; ICR - Interrupt Cause Read (0x00c0) +ICR_TXDW = 0x00000001 ; TX Desc Written back +ICR_TXQE = 0x00000002 ; TX Queue Empty +ICR_LSC = 0x00000004 ; Link Status Change +ICR_RXSEQ = 0x00000008 ; RX S= ence Error +ICR_RXDMT0 = 0x00000010 ; RX Desc min threshold reached +ICR_RXO = 0x00000040 ; RX Overrun +ICR_RXT0 = 0x00000080 ; RX Timer Interrupt +ICR_MDAC = 0x00000200 ; MDIO Access Complete +ICR_RXCFG = 0x00000400 +ICR_PHY_INT = 0x00001000 ; PHY Interrupt +ICR_GPI_SDP6 = 0x00002000 ; GPI on SDP6 +ICR_GPI_SDP7 = 0x00004000 ; GPI on SDP7 +ICR_TXD_LOW = 0x00008000 ; TX Desc low threshold hit +ICR_SRPD = 0x00010000 ; Small RX packet detected + +; RCTL - Receive Control Register (0x0100) +RCTL_EN = 0x00000002 ; Receiver Enable +RCTL_SBP = 0x00000004 ; Store Bad Packets +RCTL_UPE = 0x00000008 ; Unicast Promiscuous Enabled +RCTL_MPE = 0x00000010 ; Xcast Promiscuous Enabled +RCTL_LPE = 0x00000020 ; Long Packet Reception Enable +RCTL_LBM_MASK = 0x000000C0 ; Loopback Mode +RCTL_LBM_SHIFT = 6 +RCTL_RDMTS_MASK = 0x00000300 ; RX Desc Min Threshold Size +RCTL_RDMTS_SHIFT = 8 +RCTL_MO_MASK = 0x00003000 ; Multicast Offset +RCTL_MO_SHIFT = 12 +RCTL_BAM = 0x00008000 ; Broadcast Accept Mode +RCTL_BSIZE_MASK = 0x00030000 ; RX Buffer Size +RCTL_BSIZE_SHIFT = 16 +RCTL_VFE = 0x00040000 ; VLAN Filter Enable +RCTL_CFIEN = 0x00080000 ; CFI Enable +RCTL_CFI = 0x00100000 ; Canonical Form Indicator Bit +RCTL_DPF = 0x00400000 ; Discard Pause Frames +RCTL_PMCF = 0x00800000 ; Pass MAC Control Frames +RCTL_BSEX = 0x02000000 ; Buffer Size Extension +RCTL_SECRC = 0x04000000 ; Strip Ethernet CRC + +; TCTL - Transmit Control Register (0x0400) +TCTL_EN = 0x00000002 ; Transmit Enable +TCTL_PSP = 0x00000008 ; Pad short packets +TCTL_SWXOFF = 0x00400000 ; Software XOFF Transmission + +; PBA - Packet Buffer Allocation (0x1000) +PBA_RXA_MASK = 0x0000FFFF ; RX Packet Buffer +PBA_RXA_SHIFT = 0 +PBA_TXA_MASK = 0xFFFF0000 ; TX Packet Buffer +PBA_TXA_SHIFT = 16 + +; Flow Control Type +FCT_TYPE_DEFAULT = 0x8808 + +; === TX Descriptor fields === + +; TX Packet Length (word 2) +TXDESC_LEN_MASK = 0x0000ffff + +; TX Descriptor CMD field (word 2) +TXDESC_IDE = 0x80000000 ; Interrupt Delay Enable +TXDESC_VLE = 0x40000000 ; VLAN Packet Enable +TXDESC_DEXT = 0x20000000 ; Extension +TXDESC_RPS = 0x10000000 ; Report Packet Sent +TXDESC_RS = 0x08000000 ; Report Status +TXDESC_IC = 0x04000000 ; Insert Checksum +TXDESC_IFCS = 0x02000000 ; Insert FCS +TXDESC_EOP = 0x01000000 ; End Of Packet + +; TX Descriptor STA field (word 3) +TXDESC_TU = 0x00000008 ; Transmit Underrun +TXDESC_LC = 0x00000004 ; Late Collision +TXDESC_EC = 0x00000002 ; Excess Collisions +TXDESC_DD = 0x00000001 ; Descriptor Done + +; === RX Descriptor fields === + +; RX Packet Length (word 2) +RXDESC_LEN_MASK = 0x0000ffff + +; RX Descriptor STA field (word 3) +RXDESC_PIF = 0x00000080 ; Passed In-exact Filter +RXDESC_IPCS = 0x00000040 ; IP cksum calculated +RXDESC_TCPCS = 0x00000020 ; TCP cksum calculated +RXDESC_VP = 0x00000008 ; Packet is 802.1Q +RXDESC_IXSM = 0x00000004 ; Ignore cksum indication +RXDESC_EOP = 0x00000002 ; End Of Packet +RXDESC_DD = 0x00000001 ; Descriptor Done + + +virtual at ebx + device: + ETH_DEVICE + + .mmio_addr dd ? + .pci_bus dd ? + .pci_dev dd ? + .irq_line db ? + + rb 0x100 - (($ - device) and 0xff) + .rx_desc rd 256/8 + + rb 0x100 - (($ - device) and 0xff) + .tx_desc rd 256/8 + + sizeof.device_struct = $ - device + +end virtual + +section '.flat' code readable align 16 + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; proc START ;; +;; ;; +;; (standard driver proc) ;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +align 4 +proc START stdcall, state:dword + + cmp [state], 1 + jne .exit + + .entry: + + DEBUGF 2,"Loading %s driver\n", my_service + stdcall RegService, my_service, service_proc + ret + + .fail: + .exit: + xor eax, eax + ret + +endp + + + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; proc SERVICE_PROC ;; +;; ;; +;; (standard driver proc) ;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;; + +align 4 +proc service_proc stdcall, ioctl:dword + + mov edx, [ioctl] + mov eax, [IOCTL.io_code] + +;------------------------------------------------------ + + cmp eax, 0 ;SRV_GETVERSION + jne @F + + cmp [IOCTL.out_size], 4 + jl .fail + mov eax, [IOCTL.output] + mov [eax], dword API_VERSION + + xor eax, eax + ret + +;------------------------------------------------------ + @@: + cmp eax, 1 ;SRV_HOOK + jne .fail + + cmp [IOCTL.inp_size], 3 ; Data input must be at least 3 bytes + jl .fail + + mov eax, [IOCTL.input] + cmp byte [eax], 1 ; 1 means device number and bus number (pci) are given + jne .fail ; other types arent supported for this card yet + +; check if the device is already listed + + mov esi, device_list + mov ecx, [devices] + test ecx, ecx + jz .firstdevice + +; mov eax, [IOCTL.input] ; get the pci bus and device numbers + mov ax , [eax+1] ; + .nextdevice: + mov ebx, [esi] + cmp ax , word [device.pci_bus] ; compare with pci and device num in device list (notice the usage of word instead of byte) + je .find_devicenum ; Device is already loaded, let's find it's device number + add esi, 4 + loop .nextdevice + + +; This device doesnt have its own eth_device structure yet, lets create one + .firstdevice: + cmp [devices], MAX_DEVICES ; First check if the driver can handle one more card + jge .fail + + allocate_and_clear ebx, sizeof.device_struct, .fail ; Allocate the buffer for device structure + +; Fill in the direct call addresses into the struct + + mov [device.reset], reset + mov [device.transmit], transmit + mov [device.get_MAC], read_mac + mov [device.set_MAC], .fail + mov [device.unload], unload + mov [device.name], my_service + +; save the pci bus and device numbers + + mov eax, [IOCTL.input] + movzx ecx, byte [eax+1] + mov [device.pci_bus], ecx + movzx ecx, byte [eax+2] + mov [device.pci_dev], ecx + +; Now, it's time to find the base mmio addres of the PCI device + + find_mmio32 [device.pci_bus], [device.pci_dev], [device.mmio_addr] + +; Create virtual mapping of the physical memory + + push 1Bh ; PG_SW+PG_NOCACHE + push 10000h ; size of the map + push eax + call MapIoMem + mov [device.mmio_addr], eax + +; We've found the mmio address, find IRQ now + + find_irq byte [device.pci_bus], byte [device.pci_dev], [device.irq_line] + + DEBUGF 1,"Hooking into device, dev:%x, bus:%x, irq:%x, addr:%x\n",\ + [device.pci_dev]:1,[device.pci_bus]:1,[device.irq_line]:1,[device.mmio_addr]:8 + +; Ok, the eth_device structure is ready, let's probe the device + call probe ; this function will output in eax + test eax, eax + jnz .err ; If an error occured, exit + + mov eax, [devices] ; Add the device structure to our device list + mov [device_list+4*eax], ebx ; (IRQ handler uses this list to find device) + inc [devices] ; + + mov [device.type], NET_TYPE_ETH + call NetRegDev + + cmp eax, -1 + je .destroy + + ret + +; If the device was already loaded, find the device number and return it in eax + + .find_devicenum: + DEBUGF 1,"Trying to find device number of already registered device\n" + call NetPtrToNum ; This kernel procedure converts a pointer to device struct in ebx + ; into a device number in edi + mov eax, edi ; Application wants it in eax instead + DEBUGF 1,"Kernel says: %u\n", eax + ret + +; If an error occured, remove all allocated data and exit (returning -1 in eax) + + .destroy: + ; todo: reset device into virgin state + + .err: + stdcall KernelFree, ebx + + .fail: + or eax, -1 + ret + +;------------------------------------------------------ +endp + + +;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;; +;; ;; +;; Actual Hardware dependent code starts here ;; +;; ;; +;;/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\;; + + +align 4 +unload: + ; TODO: (in this particular order) + ; + ; - Stop the device + ; - Detach int handler + ; - Remove device from local list (device_list) + ; - call unregister function in kernel + ; - Remove all allocated structures and buffers the card used + + or eax, -1 + +ret + + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; +;; probe: enables the device (if it really is I8254X) +;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +align 4 +probe: + + DEBUGF 1,"Probe\n" + + make_bus_master byte [device.pci_bus], byte [device.pci_dev] + + ; TODO: validate the device + + call read_mac + + movzx eax, [device.irq_line] + DEBUGF 1,"Attaching int handler to irq %x\n", eax:1 + stdcall AttachIntHandler, eax, int_handler, dword 0 + test eax, eax + jnz @f + DEBUGF 1,"\nCould not attach int handler!\n" +; or eax, -1 +; ret + @@: + + +reset: + DEBUGF 1,"Reset\n" + + mov esi, [device.mmio_addr] + + mov dword [esi + REG_IMC], 0xffffffff ; Disable all interrupt causes + mov eax, dword [esi + REG_ICR] ; Clear any pending interrupts + mov dword [esi + REG_ITR], 0 ; Disable interrupt throttling logic + + mov dword [esi + REG_PBA], 0x00000030 ; PBA: set the RX buffer size to 48KB (TX buffer is calculated as 64-RX buffer) + mov dword [esi + REG_RDTR], 0 ; RDTR: set no delay + + mov dword [esi + REG_TXCW], 0x08008060 ; TXCW: set ANE, TxConfigWord (Half/Full duplex, Next Page Reqest) + + mov eax, [esi + REG_CTRL] + or eax, 1 shl 6 + 1 shl 5 + and eax, not (1 shl 3 + 1 shl 7 + 1 shl 30 + 1 shl 31) + mov dword [esi + REG_CTRL], eax ; CTRL: clear LRST, set SLU and ASDE, clear RSTPHY, VME, and ILOS + + lea edi, [esi + 0x5200] ; MTA: reset + mov eax, 0xffffffff + stosd + stosd + stosd + stosd + + stdcall KernelAlloc, 48*1024 + mov dword [device.rx_desc + 16], eax + GetRealAddr + mov dword [device.rx_desc], eax + mov dword [device.rx_desc + 4], 0 + + lea eax, [device.rx_desc] + GetRealAddr + mov dword [esi + REG_RDBAL], eax ; Receive Descriptor Base Address Low + mov dword [esi + REG_RDBAH], 0 ; Receive Descriptor Base Address High + mov dword [esi + REG_RDLEN], (1 * 128) ; Receive Descriptor Length + mov dword [esi + REG_RDH], 0 ; Receive Descriptor Head + mov dword [esi + REG_RDT], 1 ; Receive Descriptor Tail + mov dword [esi + REG_RCTL], 0x04008006 ; Receiver Enable, Store Bad Packets, Broadcast Accept Mode, Strip Ethernet CRC from incoming packet + + mov dword [device.tx_desc], 0 + mov dword [device.tx_desc + 4], 0 + mov dword [device.tx_desc + 16], 0 + + lea eax, [device.tx_desc] + GetRealAddr + mov dword [esi + REG_TDBAL], eax ; Transmit Descriptor Base Address Low + mov dword [esi + REG_TDBAH], 0 ; Transmit Descriptor Base Address High + mov dword [esi + REG_TDLEN], (1 * 128) ; Transmit Descriptor Length + mov dword [esi + REG_TDH], 0 ; Transmit Descriptor Head + mov dword [esi + REG_TDT], 0 ; Transmit Descriptor Tail + mov dword [esi + REG_TCTL], 0x010400fa ; Enabled, Pad Short Packets, 15 retrys, 64-byte COLD, Re-transmit on Late Collision + mov dword [esi + REG_TIPG], 0x0060200A ; IPGT 10, IPGR1 8, IPGR2 6 + + xor eax, eax + mov [esi + REG_RDTR], eax ; Clear the Receive Delay Timer Register + mov [esi + REG_RADV], eax ; Clear the Receive Interrupt Absolute Delay Timer + mov [esi + REG_RSRPD], eax ; Clear the Receive Small Packet Detect Interrupt + or eax, 1 shl 0 + 1 shl 7 ; TXDW + RXT0 + mov eax, -1 ;;;; hack! + mov [esi + REG_IMS], eax ; Enable interrupt types + + mov [device.mtu], 1514 + + xor eax, eax + ret + + + +align 4 +read_mac: + + DEBUGF 1,"Read MAC\n" + + mov esi, [device.mmio_addr] + + mov eax, [esi+0x5400] ; RAL + test eax, eax + jz .try_eeprom + + mov dword [device.mac], eax + mov eax, [esi+0x5404] ; RAH + mov word [device.mac+4], ax + + jmp .mac_ok + + .try_eeprom: + mov dword [esi+0x14], 0x00000001 + mov eax, [esi+0x14] + shr eax, 16 + mov word [device.mac], ax + + mov dword [esi+0x14], 0x00000101 + mov eax, [esi+0x14] + shr eax, 16 + mov word [device.mac+2], ax + + mov dword [esi+0x14], 0x00000201 + mov eax, [esi+0x14] + shr eax, 16 + mov word [device.mac+4], ax + + .mac_ok: + DEBUGF 1,"MAC = %x-%x-%x-%x-%x-%x\n",\ + [device.mac+0]:2,[device.mac+1]:2,[device.mac+2]:2,[device.mac+3]:2,[device.mac+4]:2,[device.mac+5]:2 + + ret + + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; Transmit ;; +;; ;; +;; In: buffer pointer in [esp+4] ;; +;; size of buffer in [esp+8] ;; +;; pointer to device structure in ebx ;; +;; ;; +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +align 4 +transmit: + DEBUGF 2,"\nTransmitting packet, buffer:%x, size:%u\n", [esp+4], [esp+8] + mov eax, [esp+4] + DEBUGF 2,"To: %x-%x-%x-%x-%x-%x From: %x-%x-%x-%x-%x-%x Type:%x%x\n",\ + [eax+00]:2,[eax+01]:2,[eax+02]:2,[eax+03]:2,[eax+04]:2,[eax+05]:2,\ + [eax+06]:2,[eax+07]:2,[eax+08]:2,[eax+09]:2,[eax+10]:2,[eax+11]:2,\ + [eax+13]:2,[eax+12]:2 + + cmp dword [esp + 8], 1514 + jg .fail + cmp dword [esp + 8], 60 + jl .fail + +; Program the descriptor (use legacy mode) + lea edi, [device.tx_desc] ; Transmit Descriptor Base Address + mov dword [edi + 16], eax ; Store the data location (for driver) + GetRealAddr ; + mov dword [edi], eax ; Real addr (for i8254x) + mov dword [edi + 4], 0x00000000 ; + + mov ecx, [esp + 8] + or ecx, 1 shl 24 + 1 shl 25 + 1 shl 27 ; EOP + IFCS + RS + mov dword [edi + 8], ecx ; Packet size + mov dword [edi + 12], 0x00000000 + +; Tell i8254x wich descriptor(s) we programmed + mov edi, [device.mmio_addr] + mov dword [edi + REG_TDH], 0 ; TDH - Transmit Descriptor Head + mov dword [edi + REG_TDT], 1 ; TDT - Transmit Descriptor Tail + +; Update stats + inc [device.packets_tx] + mov eax, [esp + 8] + add dword [device.bytes_tx], eax + adc dword [device.bytes_tx + 4], 0 + + ret 8 + + .fail: + DEBUGF 1,"Send failed\n" + ret 8 + + +;;;;;;;;;;;;;;;;;;;;;;; +;; ;; +;; Interrupt handler ;; +;; ;; +;;;;;;;;;;;;;;;;;;;;;;; +align 4 +int_handler: + DEBUGF 2,"\nIRQ %x\n", eax:2 ; no, you cant replace 'eax:2' with 'al', this must be a bug in FDO + +;------------------------------------------- +; Find pointer of device wich made IRQ occur + + mov esi, device_list + mov ecx, [devices] + test ecx, ecx + jz .fail + .nextdevice: + mov ebx, dword [esi] + + mov edi, [device.mmio_addr] + test edi, edi + jz .nextdevice + +;-------------------- +; Get interrupt cause + + mov eax, [edi + REG_ICR] + DEBUGF 2,"interrupt cause=%x\n", eax + +;--------- +; RX done? + + test eax, ICR_RXDMT0 + jz .no_rx + + push eax + push .retaddr + + movzx ecx, word [device.rx_desc + 8] ; Get the packet length + DEBUGF 2,"got %u bytes\n", ecx + push ecx + push [device.rx_desc + 16] ; Get packet pointer + +; Update stats + add dword [device.bytes_rx], ecx + adc dword [device.bytes_rx + 4], 0 + inc dword [device.packets_rx] + +; allocate new descriptor + stdcall KernelAlloc, 48*1024 + mov dword [device.rx_desc + 16], eax + GetRealAddr + mov dword [device.rx_desc], eax + +; reset descriptor status + mov esi, [device.mmio_addr] + mov dword [esi + REG_RDH], 0x00000000 ; Receive Descriptor Head + mov dword [esi + REG_RDT], 0x00000001 ; Receive Descriptor Tail + + jmp EthReceiver + .retaddr: + pop eax + + .no_rx: + +;-------------- +; Link Changed? + + test eax, ICR_LSC + jz .no_link + + DEBUGF 2,"Link Changed\n" + + .no_link: + +;--------------- +; Transmit done? + + test eax, ICR_TXDW + jz .no_tx + + DEBUGF 2,"Transmit done\n" + ; TODO: clear up used buffers + + .no_tx: + .fail: + ret + + + + +; End of code + +section '.data' data readable writable align 16 +align 4 + +devices dd 0 +version dd (DRIVER_VERSION shl 16) or (API_VERSION and 0xFFFF) +my_service db 'I8254X',0 ; max 16 chars include zero + +include_debug_strings ; All data wich FDO uses will be included here + +device_list rd MAX_DEVICES ; This list contains all pointers to device structures the driver is handling + +