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/i810/i810_accel.c | 456 ++++++++++++++++++++++++++++++++++ 1 file changed, 456 insertions(+) create mode 100644 drivers/video/fbdev/i810/i810_accel.c (limited to 'drivers/video/fbdev/i810/i810_accel.c') diff --git a/drivers/video/fbdev/i810/i810_accel.c b/drivers/video/fbdev/i810/i810_accel.c new file mode 100644 index 000000000..7672d2ea9 --- /dev/null +++ b/drivers/video/fbdev/i810/i810_accel.c @@ -0,0 +1,456 @@ +/*-*- linux-c -*- + * linux/drivers/video/i810_accel.c -- Hardware Acceleration + * + * Copyright (C) 2001 Antonino Daplas + * All Rights Reserved + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ +#include +#include +#include + +#include "i810_regs.h" +#include "i810.h" +#include "i810_main.h" + +static u32 i810fb_rop[] = { + COLOR_COPY_ROP, /* ROP_COPY */ + XOR_ROP /* ROP_XOR */ +}; + +/* Macros */ +#define PUT_RING(n) { \ + i810_writel(par->cur_tail, par->iring.virtual, n); \ + par->cur_tail += 4; \ + par->cur_tail &= RING_SIZE_MASK; \ +} + +extern void flush_cache(void); + +/************************************************************/ + +/* BLT Engine Routines */ +static inline void i810_report_error(u8 __iomem *mmio) +{ + printk("IIR : 0x%04x\n" + "EIR : 0x%04x\n" + "PGTBL_ER: 0x%04x\n" + "IPEIR : 0x%04x\n" + "IPEHR : 0x%04x\n", + i810_readw(IIR, mmio), + i810_readb(EIR, mmio), + i810_readl(PGTBL_ER, mmio), + i810_readl(IPEIR, mmio), + i810_readl(IPEHR, mmio)); +} + +/** + * wait_for_space - check ring buffer free space + * @space: amount of ringbuffer space needed in bytes + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * The function waits until a free space from the ringbuffer + * is available + */ +static inline int wait_for_space(struct fb_info *info, u32 space) +{ + struct i810fb_par *par = info->par; + u32 head, count = WAIT_COUNT, tail; + u8 __iomem *mmio = par->mmio_start_virtual; + + tail = par->cur_tail; + while (count--) { + head = i810_readl(IRING + 4, mmio) & RBUFFER_HEAD_MASK; + if ((tail == head) || + (tail > head && + (par->iring.size - tail + head) >= space) || + (tail < head && (head - tail) >= space)) { + return 0; + } + } + printk("ringbuffer lockup!!!\n"); + i810_report_error(mmio); + par->dev_flags |= LOCKUP; + info->pixmap.scan_align = 1; + return 1; +} + +/** + * wait_for_engine_idle - waits for all hardware engines to finish + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * This waits for lring(0), iring(1), and batch(3), etc to finish and + * waits until ringbuffer is empty. + */ +static inline int wait_for_engine_idle(struct fb_info *info) +{ + struct i810fb_par *par = info->par; + u8 __iomem *mmio = par->mmio_start_virtual; + int count = WAIT_COUNT; + + if (wait_for_space(info, par->iring.size)) /* flush */ + return 1; + + while((i810_readw(INSTDONE, mmio) & 0x7B) != 0x7B && --count); + if (count) return 0; + + printk("accel engine lockup!!!\n"); + printk("INSTDONE: 0x%04x\n", i810_readl(INSTDONE, mmio)); + i810_report_error(mmio); + par->dev_flags |= LOCKUP; + info->pixmap.scan_align = 1; + return 1; +} + +/* begin_iring - prepares the ringbuffer + * @space: length of sequence in dwords + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * Checks/waits for sufficient space in ringbuffer of size + * space. Returns the tail of the buffer + */ +static inline u32 begin_iring(struct fb_info *info, u32 space) +{ + struct i810fb_par *par = info->par; + + if (par->dev_flags & ALWAYS_SYNC) + wait_for_engine_idle(info); + return wait_for_space(info, space); +} + +/** + * end_iring - advances the buffer + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * This advances the tail of the ringbuffer, effectively + * beginning the execution of the graphics instruction sequence. + */ +static inline void end_iring(struct i810fb_par *par) +{ + u8 __iomem *mmio = par->mmio_start_virtual; + + i810_writel(IRING, mmio, par->cur_tail); +} + +/** + * source_copy_blit - BLIT transfer operation + * @dwidth: width of rectangular graphics data + * @dheight: height of rectangular graphics data + * @dpitch: bytes per line of destination buffer + * @xdir: direction of copy (left to right or right to left) + * @src: address of first pixel to read from + * @dest: address of first pixel to write to + * @from: source address + * @where: destination address + * @rop: raster operation + * @blit_bpp: pixel format which can be different from the + * framebuffer's pixelformat + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * This is a BLIT operation typically used when doing + * a 'Copy and Paste' + */ +static inline void source_copy_blit(int dwidth, int dheight, int dpitch, + int xdir, int src, int dest, int rop, + int blit_bpp, struct fb_info *info) +{ + struct i810fb_par *par = info->par; + + if (begin_iring(info, 24 + IRING_PAD)) return; + + PUT_RING(BLIT | SOURCE_COPY_BLIT | 4); + PUT_RING(xdir | rop << 16 | dpitch | DYN_COLOR_EN | blit_bpp); + PUT_RING(dheight << 16 | dwidth); + PUT_RING(dest); + PUT_RING(dpitch); + PUT_RING(src); + + end_iring(par); +} + +/** + * color_blit - solid color BLIT operation + * @width: width of destination + * @height: height of destination + * @pitch: pixels per line of the buffer + * @dest: address of first pixel to write to + * @where: destination + * @rop: raster operation + * @what: color to transfer + * @blit_bpp: pixel format which can be different from the + * framebuffer's pixelformat + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * A BLIT operation which can be used for color fill/rectangular fill + */ +static inline void color_blit(int width, int height, int pitch, int dest, + int rop, int what, int blit_bpp, + struct fb_info *info) +{ + struct i810fb_par *par = info->par; + + if (begin_iring(info, 24 + IRING_PAD)) return; + + PUT_RING(BLIT | COLOR_BLT | 3); + PUT_RING(rop << 16 | pitch | SOLIDPATTERN | DYN_COLOR_EN | blit_bpp); + PUT_RING(height << 16 | width); + PUT_RING(dest); + PUT_RING(what); + PUT_RING(NOP); + + end_iring(par); +} + +/** + * mono_src_copy_imm_blit - color expand from system memory to framebuffer + * @dwidth: width of destination + * @dheight: height of destination + * @dpitch: pixels per line of the buffer + * @dsize: size of bitmap in double words + * @dest: address of first byte of pixel; + * @rop: raster operation + * @blit_bpp: pixelformat to use which can be different from the + * framebuffer's pixelformat + * @src: address of image data + * @bg: backgound color + * @fg: forground color + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * A color expand operation where the source data is placed in the + * ringbuffer itself. Useful for drawing text. + * + * REQUIREMENT: + * The end of a scanline must be padded to the next word. + */ +static inline void mono_src_copy_imm_blit(int dwidth, int dheight, int dpitch, + int dsize, int blit_bpp, int rop, + int dest, const u32 *src, int bg, + int fg, struct fb_info *info) +{ + struct i810fb_par *par = info->par; + + if (begin_iring(info, 24 + (dsize << 2) + IRING_PAD)) return; + + PUT_RING(BLIT | MONO_SOURCE_COPY_IMMEDIATE | (4 + dsize)); + PUT_RING(DYN_COLOR_EN | blit_bpp | rop << 16 | dpitch); + PUT_RING(dheight << 16 | dwidth); + PUT_RING(dest); + PUT_RING(bg); + PUT_RING(fg); + while (dsize--) + PUT_RING(*src++); + + end_iring(par); +} + +static inline void load_front(int offset, struct fb_info *info) +{ + struct i810fb_par *par = info->par; + + if (begin_iring(info, 8 + IRING_PAD)) return; + + PUT_RING(PARSER | FLUSH); + PUT_RING(NOP); + + end_iring(par); + + if (begin_iring(info, 8 + IRING_PAD)) return; + + PUT_RING(PARSER | FRONT_BUFFER | ((par->pitch >> 3) << 8)); + PUT_RING((par->fb.offset << 12) + offset); + + end_iring(par); +} + +/** + * i810fb_iring_enable - enables/disables the ringbuffer + * @mode: enable or disable + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * Enables or disables the ringbuffer, effectively enabling or + * disabling the instruction/acceleration engine. + */ +static inline void i810fb_iring_enable(struct i810fb_par *par, u32 mode) +{ + u32 tmp; + u8 __iomem *mmio = par->mmio_start_virtual; + + tmp = i810_readl(IRING + 12, mmio); + if (mode == OFF) + tmp &= ~1; + else + tmp |= 1; + flush_cache(); + i810_writel(IRING + 12, mmio, tmp); +} + +void i810fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + struct i810fb_par *par = info->par; + u32 dx, dy, width, height, dest, rop = 0, color = 0; + + if (!info->var.accel_flags || par->dev_flags & LOCKUP || + par->depth == 4) { + cfb_fillrect(info, rect); + return; + } + + if (par->depth == 1) + color = rect->color; + else + color = ((u32 *) (info->pseudo_palette))[rect->color]; + + rop = i810fb_rop[rect->rop]; + + dx = rect->dx * par->depth; + width = rect->width * par->depth; + dy = rect->dy; + height = rect->height; + + dest = info->fix.smem_start + (dy * info->fix.line_length) + dx; + color_blit(width, height, info->fix.line_length, dest, rop, color, + par->blit_bpp, info); +} + +void i810fb_copyarea(struct fb_info *info, const struct fb_copyarea *region) +{ + struct i810fb_par *par = info->par; + u32 sx, sy, dx, dy, pitch, width, height, src, dest, xdir; + + if (!info->var.accel_flags || par->dev_flags & LOCKUP || + par->depth == 4) { + cfb_copyarea(info, region); + return; + } + + dx = region->dx * par->depth; + sx = region->sx * par->depth; + width = region->width * par->depth; + sy = region->sy; + dy = region->dy; + height = region->height; + + if (dx <= sx) { + xdir = INCREMENT; + } + else { + xdir = DECREMENT; + sx += width - 1; + dx += width - 1; + } + if (dy <= sy) { + pitch = info->fix.line_length; + } + else { + pitch = (-(info->fix.line_length)) & 0xFFFF; + sy += height - 1; + dy += height - 1; + } + src = info->fix.smem_start + (sy * info->fix.line_length) + sx; + dest = info->fix.smem_start + (dy * info->fix.line_length) + dx; + + source_copy_blit(width, height, pitch, xdir, src, dest, + PAT_COPY_ROP, par->blit_bpp, info); +} + +void i810fb_imageblit(struct fb_info *info, const struct fb_image *image) +{ + struct i810fb_par *par = info->par; + u32 fg = 0, bg = 0, size, dst; + + if (!info->var.accel_flags || par->dev_flags & LOCKUP || + par->depth == 4 || image->depth != 1) { + cfb_imageblit(info, image); + return; + } + + switch (info->var.bits_per_pixel) { + case 8: + fg = image->fg_color; + bg = image->bg_color; + break; + case 16: + case 24: + fg = ((u32 *)(info->pseudo_palette))[image->fg_color]; + bg = ((u32 *)(info->pseudo_palette))[image->bg_color]; + break; + } + + dst = info->fix.smem_start + (image->dy * info->fix.line_length) + + (image->dx * par->depth); + + size = (image->width+7)/8 + 1; + size &= ~1; + size *= image->height; + size += 7; + size &= ~7; + mono_src_copy_imm_blit(image->width * par->depth, + image->height, info->fix.line_length, + size/4, par->blit_bpp, + PAT_COPY_ROP, dst, (u32 *) image->data, + bg, fg, info); +} + +int i810fb_sync(struct fb_info *info) +{ + struct i810fb_par *par = info->par; + + if (!info->var.accel_flags || par->dev_flags & LOCKUP) + return 0; + + return wait_for_engine_idle(info); +} + +void i810fb_load_front(u32 offset, struct fb_info *info) +{ + struct i810fb_par *par = info->par; + u8 __iomem *mmio = par->mmio_start_virtual; + + if (!info->var.accel_flags || par->dev_flags & LOCKUP) + i810_writel(DPLYBASE, mmio, par->fb.physical + offset); + else + load_front(offset, info); +} + +/** + * i810fb_init_ringbuffer - initialize the ringbuffer + * @par: pointer to i810fb_par structure + * + * DESCRIPTION: + * Initializes the ringbuffer by telling the device the + * size and location of the ringbuffer. It also sets + * the head and tail pointers = 0 + */ +void i810fb_init_ringbuffer(struct fb_info *info) +{ + struct i810fb_par *par = info->par; + u32 tmp1, tmp2; + u8 __iomem *mmio = par->mmio_start_virtual; + + wait_for_engine_idle(info); + i810fb_iring_enable(par, OFF); + i810_writel(IRING, mmio, 0); + i810_writel(IRING + 4, mmio, 0); + par->cur_tail = 0; + + tmp2 = i810_readl(IRING + 8, mmio) & ~RBUFFER_START_MASK; + tmp1 = par->iring.physical; + i810_writel(IRING + 8, mmio, tmp2 | tmp1); + + tmp1 = i810_readl(IRING + 12, mmio); + tmp1 &= ~RBUFFER_SIZE_MASK; + tmp2 = (par->iring.size - I810_PAGESIZE) & RBUFFER_SIZE_MASK; + i810_writel(IRING + 12, mmio, tmp1 | tmp2); + i810fb_iring_enable(par, ON); +} -- cgit v1.2.3