populate attic from branch igbe

src/apps/intel/attic/igbe.lua

@@ -0,0 +1,47 @@
+-- igbe.lua -- Intel Gigabit Ethernet base driver
+
+local pci = require("lib.hardware.pci")
+
+function configure (conf)
+   print("pciaddress: " .. conf.pciaddress)
+   pci.unbind_device_from_linux(conf.pciaddress)
+   pci.set_bus(self.pciaddress, true)
+   initialize()
+end
+
+-- [4.6.3 Initialization Sequence]
+function initialize ()
+   disable_interrupts()
+   global_reset_and_general_configuration()
+   initialize_phy()
+   initialize_statistics_counters()
+   -- Skipped, out of scope for this app:
+   --   Initialize Receive
+   --   Initialize Transmit
+   --   Enable Interrupts
+end
+
+-- [4.6.4 Interrupts During Initialization]
+function disable_interrupts ()
+   r[EMIC] = bits({0,1,2,3,4,5,6,7,30,31})
+end
+
+-- [4.6.5 Global Reset and General Configuration]
+function global_reset_and_general_configuration ()
+   r[CTRL] = bits({SLU=6, 
+end
+
+-- [4.6.7.1 PHY initialization]
+function initialize_phy ()
+   -- Expect this to be done in hardware from EEPROM.
+end
+
+-- [4.6.8 Initialization of Statistics]
+function initialize_statistics_counters ()
+   -- No action reqired.
+   -- 
+   -- Data sheet suggests reading all registers to zero them but it
+   -- also specifies that they all have zero as their initial values.
+   -- Let's not do unnecessary work.
+end
+

src/apps/intel/attic/igbe_tx.lua

@@ -0,0 +1,87 @@
+-- igbe_tx.lua -- Intel Gigabit Ethernet: transmit driver
+
+local igbe_tx = {}
+
+local ffi = require("ffi")
+local pci = require("lib.hardware.pci")
+
+local virtual_to_physical = require("core.memory").virtual_to_physical
+
+local ndescriptors = 256
+local txdesc_t = ffi.typeof("struct { uint64_t address, options; }")
+local txdesc_ring_t = ffi.typeof("txdesc_t[?]", ndescriptors)
+
+-- Transmit descriptor array: txdesc_ring_t allocated in DMA memory.
+local desc
+
+local pci_mmio -- char* to PCI config registers
+local pci_fd   -- file descriptor for PCI device
+
+local function configure (conf)
+   print("pciaddress: " .. conf.pciaddress)
+   initialize()
+end
+
+-- [4.6.10 Transmit Initialization]
+local function initialize ()
+   desc = ffi.cast(txdesc_ring_t, memory.dma_alloc(ffi.sizeof(txdesc_ring_t)))
+   local phys = virtual_to_physical(desc)
+   poke(r.TDBAL, phys % 2^32)
+   poke(r.TDBAH, phys / 2^32)
+   poke(r.TDLEN, ffi.sizeof(txdesc_ring_t))
+   poke(r.TXDCTL, {wthresh=16}) -- throttle/suppress descriptor writeback
+   poke(r.TXDCTL, {enable=25})
+   wait(r.TXDCTL, {enable=25})
+end
+
+local tdh, tdt = 0, 0
+local txdesc_flags = bits({ifcs=25, dext=29, dtyp0=20, dtyp1=21, eop=24})
+
+-- Transmit a packet asynchronously.
+local function transmit (packet)
+   desc[tdt].address = virtual_to_physical(packet.data)
+   desc.flags = bor(packet.length, txdesc_flags)
+   txpackets[tdt] = packet
+   tdt = band(tdt+1, ndescriptors-1)
+end
+
+-- Return true if a new packet can be transmitted.
+local function can_transmit ()
+   return band(tdt+1, ndescriptors-1) ~= tdh
+end
+
+-- Synchronize ring state with hardware.
+-- Free packets that have now been transmitted.
+local function sync ()
+   local cursor = tdh
+   tdh = peek(r.TDH)
+   free_packets(
+   if cursor ~= tdh then
+      while cursor ~= tdh do
+         packet.free(packets[cursor])
+         packets[cursor] = nil
+         cursor = band(cursor+1, ndescriptors-1)
+      end
+   end
+   poke(r.TDT, tdt)
+end
+
+-- App callbacks.
+
+function igbe_tx.configure (conf)
+   configure(conf)
+end
+
+function igbe_tx.push ()
+   assert(#input == 1, "igbe_tx expects one input link")
+   while link.can_receive(input[1]) and can_transmit() do
+      transmit(link.receive(input[1]))
+   end
+end
+
+function igbe_tx.stop ()
+   free_packets(tdh, tdt)
+   if pci_fd then pci.close_pci_resource(pci_fd) end
+end
+
+return igbe_tx

src/apps/intel/attic/regs_i350.inc

@@ -0,0 +1,77 @@
+Statistics registers:
+0x4000 N/A CRCERRS CRC Error Count RC
+0x4004 N/A ALGNERRC Alignment Error Count RC
+0x4008 N/A SYMERRS Symbol Error Count RC
+0x400C N/A RXERRC RX Error Count RC
+0x4010 N/A MPC Missed Packets Count RC
+0x4014 N/A SCC Single Collision Count RC
+0x4018 N/A ECOL Excessive Collisions Count RC
+0x401C N/A MCC Multiple Collision Count RC
+0x4020 N/A LATECOL Late Collisions Count RC
+0x4028 N/A COLC Collision Count RC
+0x4030 N/A DC Defer Count RC
+0x4034 N/A TNCRS Transmit - No CRS RC
+0x403C N/A HTDPMC Host Transmit Discarded Packets by MAC Count RC
+0x4040 N/A RLEC Receive Length Error Count RC
+0x4048 N/A XONRXC XON Received Count RC
+0x404C N/A XONTXC XON Transmitted Count RC
+0x4050 N/A XOFFRXC XOFF Received Count RC
+0x4054 N/A XOFFTXC XOFF Transmitted Count RC
+0x4058 N/A FCRUC FC Received Unsupported Count RC
+0x405C N/A PRC64 Packets Received (64 Bytes) Count RC
+0x4060 N/A PRC127 Packets Received (65-127 Bytes) Count RC
+0x4064 N/A PRC255 Packets Received (128-255 Bytes) Count RC
+0x4068 N/A PRC511 Packets Received (256-511 Bytes) Count RC
+0x406C N/A PRC1023 Packets Received (512-1023 Bytes) Count RC
+0x4070 N/A PRC1522 Packets Received (1024-1522 Bytes) RC
+0x4074 N/A GPRC Good Packets Received Count RC
+0x4078 N/A BPRC Broadcast Packets Received Count RC
+0x407C N/A MPRC Multicast Packets Received Count RC
+0x4080 N/A GPTC Good Packets Transmitted Count RC
+0x4088 N/A GORCL Good Octets Received Count (Lo) RC
+0x408C N/A GORCH Good Octets Received Count (Hi) RC
+0x4090 N/A GOTCL Good Octets Transmitted Count (Lo) RC
+0x4094 N/A GOTCH Good Octets Transmitted Count (Hi) RC
+0x40A0 N/A RNBC Receive No Buffers Count RC
+0x40A4 N/A RUC Receive Under size Count RC
+0x40A8 N/A RFC Receive Fragment Count RC
+0x40AC N/A ROC Receive Oversize Count RC
+0x40B0 N/A RJC Receive Jabber Count RC
+0x40B4 N/A MNGPRC Management Packets Receive Count RC
+0x40B8 N/A MPDC Management Packets Dropped Count RC
+0x40BC N/A MNGPTC Management Packets Transmitted Count RC
+0x40C0 N/A TORL Total Octets Received (Lo) RC
+0x8FE0 N/A B2OSPC BMC2OS packets sent by BMC RC
+0x4158 N/A B2OGPRC BMC2OS packets received by host RC
+0x8FE4 N/A O2BGPTC OS2BMC packets received by BMC RC
+0x415C N/A O2BSPC OS2BMC packets transmitted by host RC
+0x40C4 N/A TORH Total Octets Received (Hi) RC
+0x40C8 N/A TOTL Total Octets Transmitted (Lo) RC
+0x40CC N/A TOTH Total Octets Transmitted (Hi) RC
+0x40D0 N/A TPR Total Packets Received RC
+0x40D4 N/A TPT Total Packets transmitted RC
+0x40D8 N/A PTC64 Packets Transmitted (64 Bytes) Count RC
+0x40DC N/A PTC127 Packets Transmitted (65-127 Bytes) Count RC
+0x40E0 N/A PTC255 Packets Transmitted (128-256 Bytes) Count RC
+0x40E4 N/A PTC511 Packets Transmitted (256-511 Bytes) Count RC
+0x40E8 N/A PTC1023 Packets Transmitted (512-1023 Bytes) Count RC
+0x40EC N/A PTC1522 Packets Transmitted (1024-1522 Bytes) Count RC
+0x40F0 N/A MPTC Multicast Packets Transmitted Count RC
+0x40F4 N/A BPTC Broadcast Packets Transmitted Count RC
+0x40F8 N/A TSCTC TCP Segmentation Context Transmitted Count RC
+0x4100 N/A IAC Interrupt Assertion Count RC
+0x4104 N/A RPTHC Rx Packets to host count RC
+0x4148 N/A TLPIC EEE TX LPI Count RC
+0x414C N/A RLPIC EEE RX LPI Count RC
+0x4118 N/A HGPTC Host Good Packets Transmitted Count RC
+0x4120 N/A RXDMTC Rx Descriptor Minimum Threshold Count RC
+0x4128 N/A HGORCL Host Good Octets Received Count (Lo) RC
+0x412C N/A HGORCH Host Good Octets Received Count (Hi) RC
+0x4130 N/A HGOTCL Host Good Octets Transmitted Count (Lo) RC
+0x4134 N/A HGOTCH Host Good Octets Transmitted Count (Hi) RC
+0x4138 N/A LENERRS Length Errors count register RC
+0x4228 N/A SCVPC SerDes/SGMII/1000BASE-KX Code Violations RW
+0x41A0 N/A SSVPC Switch Security Violation Packet Count RC
+0x41A4 N/A SDPC Switch Drop Packet Count RC/W
+0x4154 N/A MNGFBDPC Management full buffer drop packet count RC/W
+0x4150 N/A LPBKFBDPC Loopback full buffer drop packet count RC/W