From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/video/fbdev/dnfb.c | 305 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 305 insertions(+) create mode 100644 drivers/video/fbdev/dnfb.c (limited to 'drivers/video/fbdev/dnfb.c') diff --git a/drivers/video/fbdev/dnfb.c b/drivers/video/fbdev/dnfb.c new file mode 100644 index 000000000..18405c402 --- /dev/null +++ b/drivers/video/fbdev/dnfb.c @@ -0,0 +1,305 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +/* apollo video HW definitions */ + +/* + * Control Registers. IOBASE + $x + * + * Note: these are the Memory/IO BASE definitions for a mono card set to the + * alternate address + * + * Control 3A and 3B serve identical functions except that 3A + * deals with control 1 and 3b deals with Color LUT reg. + */ + +#define AP_IOBASE 0x3b0 /* Base address of 1 plane board. */ +#define AP_STATUS isaIO2mem(AP_IOBASE+0) /* Status register. Read */ +#define AP_WRITE_ENABLE isaIO2mem(AP_IOBASE+0) /* Write Enable Register Write */ +#define AP_DEVICE_ID isaIO2mem(AP_IOBASE+1) /* Device ID Register. Read */ +#define AP_ROP_1 isaIO2mem(AP_IOBASE+2) /* Raster Operation reg. Write Word */ +#define AP_DIAG_MEM_REQ isaIO2mem(AP_IOBASE+4) /* Diagnostic Memory Request. Write Word */ +#define AP_CONTROL_0 isaIO2mem(AP_IOBASE+8) /* Control Register 0. Read/Write */ +#define AP_CONTROL_1 isaIO2mem(AP_IOBASE+0xa) /* Control Register 1. Read/Write */ +#define AP_CONTROL_3A isaIO2mem(AP_IOBASE+0xe) /* Control Register 3a. Read/Write */ +#define AP_CONTROL_2 isaIO2mem(AP_IOBASE+0xc) /* Control Register 2. Read/Write */ + + +#define FRAME_BUFFER_START 0x0FA0000 +#define FRAME_BUFFER_LEN 0x40000 + +/* CREG 0 */ +#define VECTOR_MODE 0x40 /* 010x.xxxx */ +#define DBLT_MODE 0x80 /* 100x.xxxx */ +#define NORMAL_MODE 0xE0 /* 111x.xxxx */ +#define SHIFT_BITS 0x1F /* xxx1.1111 */ + /* other bits are Shift value */ + +/* CREG 1 */ +#define AD_BLT 0x80 /* 1xxx.xxxx */ +#define NORMAL 0x80 /* 1xxx.xxxx */ /* What is happening here ?? */ +#define INVERSE 0x00 /* 0xxx.xxxx */ /* Clearing this reverses the screen */ +#define PIX_BLT 0x00 /* 0xxx.xxxx */ + +#define AD_HIBIT 0x40 /* xIxx.xxxx */ + +#define ROP_EN 0x10 /* xxx1.xxxx */ +#define DST_EQ_SRC 0x00 /* xxx0.xxxx */ +#define nRESET_SYNC 0x08 /* xxxx.1xxx */ +#define SYNC_ENAB 0x02 /* xxxx.xx1x */ + +#define BLANK_DISP 0x00 /* xxxx.xxx0 */ +#define ENAB_DISP 0x01 /* xxxx.xxx1 */ + +#define NORM_CREG1 (nRESET_SYNC | SYNC_ENAB | ENAB_DISP) /* no reset sync */ + +/* CREG 2 */ + +/* + * Following 3 defines are common to 1, 4 and 8 plane. + */ + +#define S_DATA_1s 0x00 /* 00xx.xxxx */ /* set source to all 1's -- vector drawing */ +#define S_DATA_PIX 0x40 /* 01xx.xxxx */ /* takes source from ls-bits and replicates over 16 bits */ +#define S_DATA_PLN 0xC0 /* 11xx.xxxx */ /* normal, each data access =16-bits in + one plane of image mem */ + +/* CREG 3A/CREG 3B */ +# define RESET_CREG 0x80 /* 1000.0000 */ + +/* ROP REG - all one nibble */ +/* ********* NOTE : this is used r0,r1,r2,r3 *********** */ +#define ROP(r2,r3,r0,r1) ( (U_SHORT)((r0)|((r1)<<4)|((r2)<<8)|((r3)<<12)) ) +#define DEST_ZERO 0x0 +#define SRC_AND_DEST 0x1 +#define SRC_AND_nDEST 0x2 +#define SRC 0x3 +#define nSRC_AND_DEST 0x4 +#define DEST 0x5 +#define SRC_XOR_DEST 0x6 +#define SRC_OR_DEST 0x7 +#define SRC_NOR_DEST 0x8 +#define SRC_XNOR_DEST 0x9 +#define nDEST 0xA +#define SRC_OR_nDEST 0xB +#define nSRC 0xC +#define nSRC_OR_DEST 0xD +#define SRC_NAND_DEST 0xE +#define DEST_ONE 0xF + +#define SWAP(A) ((A>>8) | ((A&0xff) <<8)) + +/* frame buffer operations */ + +static int dnfb_blank(int blank, struct fb_info *info); +static void dnfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); + +static const struct fb_ops dn_fb_ops = { + .owner = THIS_MODULE, + .fb_blank = dnfb_blank, + .fb_fillrect = cfb_fillrect, + .fb_copyarea = dnfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +static const struct fb_var_screeninfo dnfb_var = { + .xres = 1280, + .yres = 1024, + .xres_virtual = 2048, + .yres_virtual = 1024, + .bits_per_pixel = 1, + .height = -1, + .width = -1, + .vmode = FB_VMODE_NONINTERLACED, +}; + +static const struct fb_fix_screeninfo dnfb_fix = { + .id = "Apollo Mono", + .smem_start = (FRAME_BUFFER_START + IO_BASE), + .smem_len = FRAME_BUFFER_LEN, + .type = FB_TYPE_PACKED_PIXELS, + .visual = FB_VISUAL_MONO10, + .line_length = 256, +}; + +static int dnfb_blank(int blank, struct fb_info *info) +{ + if (blank) + out_8(AP_CONTROL_3A, 0x0); + else + out_8(AP_CONTROL_3A, 0x1); + return 0; +} + +static +void dnfb_copyarea(struct fb_info *info, const struct fb_copyarea *area) +{ + + int incr, y_delta, pre_read = 0, x_end, x_word_count; + uint start_mask, end_mask, dest; + ushort *src, dummy; + short i, j; + + incr = (area->dy <= area->sy) ? 1 : -1; + + src = (ushort *)(info->screen_base + area->sy * info->fix.line_length + + (area->sx >> 4)); + dest = area->dy * (info->fix.line_length >> 1) + (area->dx >> 4); + + if (incr > 0) { + y_delta = (info->fix.line_length * 8) - area->sx - area->width; + x_end = area->dx + area->width - 1; + x_word_count = (x_end >> 4) - (area->dx >> 4) + 1; + start_mask = 0xffff0000 >> (area->dx & 0xf); + end_mask = 0x7ffff >> (x_end & 0xf); + out_8(AP_CONTROL_0, + (((area->dx & 0xf) - (area->sx & 0xf)) % 16) | (0x4 << 5)); + if ((area->dx & 0xf) < (area->sx & 0xf)) + pre_read = 1; + } else { + y_delta = -((info->fix.line_length * 8) - area->sx - area->width); + x_end = area->dx - area->width + 1; + x_word_count = (area->dx >> 4) - (x_end >> 4) + 1; + start_mask = 0x7ffff >> (area->dx & 0xf); + end_mask = 0xffff0000 >> (x_end & 0xf); + out_8(AP_CONTROL_0, + ((-((area->sx & 0xf) - (area->dx & 0xf))) % 16) | + (0x4 << 5)); + if ((area->dx & 0xf) > (area->sx & 0xf)) + pre_read = 1; + } + + for (i = 0; i < area->height; i++) { + + out_8(AP_CONTROL_3A, 0xc | (dest >> 16)); + + if (pre_read) { + dummy = *src; + src += incr; + } + + if (x_word_count) { + out_8(AP_WRITE_ENABLE, start_mask); + *src = dest; + src += incr; + dest += incr; + out_8(AP_WRITE_ENABLE, 0); + + for (j = 1; j < (x_word_count - 1); j++) { + *src = dest; + src += incr; + dest += incr; + } + + out_8(AP_WRITE_ENABLE, start_mask); + *src = dest; + dest += incr; + src += incr; + } else { + out_8(AP_WRITE_ENABLE, start_mask | end_mask); + *src = dest; + dest += incr; + src += incr; + } + src += (y_delta / 16); + dest += (y_delta / 16); + } + out_8(AP_CONTROL_0, NORMAL_MODE); +} + +/* + * Initialization + */ + +static int dnfb_probe(struct platform_device *dev) +{ + struct fb_info *info; + int err = 0; + + info = framebuffer_alloc(0, &dev->dev); + if (!info) + return -ENOMEM; + + info->fbops = &dn_fb_ops; + info->fix = dnfb_fix; + info->var = dnfb_var; + info->var.red.length = 1; + info->var.red.offset = 0; + info->var.green = info->var.blue = info->var.red; + info->screen_base = (u_char *) info->fix.smem_start; + + err = fb_alloc_cmap(&info->cmap, 2, 0); + if (err < 0) + goto release_framebuffer; + + err = register_framebuffer(info); + if (err < 0) { + fb_dealloc_cmap(&info->cmap); + goto release_framebuffer; + } + platform_set_drvdata(dev, info); + + /* now we have registered we can safely setup the hardware */ + out_8(AP_CONTROL_3A, RESET_CREG); + out_be16(AP_WRITE_ENABLE, 0x0); + out_8(AP_CONTROL_0, NORMAL_MODE); + out_8(AP_CONTROL_1, (AD_BLT | DST_EQ_SRC | NORM_CREG1)); + out_8(AP_CONTROL_2, S_DATA_PLN); + out_be16(AP_ROP_1, SWAP(0x3)); + + printk("apollo frame buffer alive and kicking !\n"); + return err; + +release_framebuffer: + framebuffer_release(info); + return err; +} + +static struct platform_driver dnfb_driver = { + .probe = dnfb_probe, + .driver = { + .name = "dnfb", + }, +}; + +static struct platform_device dnfb_device = { + .name = "dnfb", +}; + +static int __init dnfb_init(void) +{ + int ret; + + if (!MACH_IS_APOLLO) + return -ENODEV; + + if (fb_get_options("dnfb", NULL)) + return -ENODEV; + + ret = platform_driver_register(&dnfb_driver); + + if (!ret) { + ret = platform_device_register(&dnfb_device); + if (ret) + platform_driver_unregister(&dnfb_driver); + } + return ret; +} + +module_init(dnfb_init); + +MODULE_LICENSE("GPL"); -- cgit v1.2.3