1 // SPDX-License-Identifier: GPL-2.0 2 3 use kernel::{device, devres::Devres, error::code::*, pci, prelude::*}; 4 5 use crate::driver::Bar0; 6 use crate::falcon::{gsp::Gsp, sec2::Sec2, Falcon}; 7 use crate::fb::FbLayout; 8 use crate::fb::SysmemFlush; 9 use crate::firmware::{Firmware, FIRMWARE_VERSION}; 10 use crate::gfw; 11 use crate::regs; 12 use crate::util; 13 use crate::vbios::Vbios; 14 use core::fmt; 15 16 macro_rules! define_chipset { 17 ({ $($variant:ident = $value:expr),* $(,)* }) => 18 { 19 /// Enum representation of the GPU chipset. 20 #[derive(fmt::Debug, Copy, Clone, PartialOrd, Ord, PartialEq, Eq)] 21 pub(crate) enum Chipset { 22 $($variant = $value),*, 23 } 24 25 impl Chipset { 26 pub(crate) const ALL: &'static [Chipset] = &[ 27 $( Chipset::$variant, )* 28 ]; 29 30 pub(crate) const NAMES: [&'static str; Self::ALL.len()] = [ 31 $( util::const_bytes_to_str( 32 util::to_lowercase_bytes::<{ stringify!($variant).len() }>( 33 stringify!($variant) 34 ).as_slice() 35 ), )* 36 ]; 37 } 38 39 // TODO replace with something like derive(FromPrimitive) 40 impl TryFrom<u32> for Chipset { 41 type Error = kernel::error::Error; 42 43 fn try_from(value: u32) -> Result<Self, Self::Error> { 44 match value { 45 $( $value => Ok(Chipset::$variant), )* 46 _ => Err(ENODEV), 47 } 48 } 49 } 50 } 51 } 52 53 define_chipset!({ 54 // Turing 55 TU102 = 0x162, 56 TU104 = 0x164, 57 TU106 = 0x166, 58 TU117 = 0x167, 59 TU116 = 0x168, 60 // Ampere 61 GA100 = 0x170, 62 GA102 = 0x172, 63 GA103 = 0x173, 64 GA104 = 0x174, 65 GA106 = 0x176, 66 GA107 = 0x177, 67 // Ada 68 AD102 = 0x192, 69 AD103 = 0x193, 70 AD104 = 0x194, 71 AD106 = 0x196, 72 AD107 = 0x197, 73 }); 74 75 impl Chipset { 76 pub(crate) fn arch(&self) -> Architecture { 77 match self { 78 Self::TU102 | Self::TU104 | Self::TU106 | Self::TU117 | Self::TU116 => { 79 Architecture::Turing 80 } 81 Self::GA100 | Self::GA102 | Self::GA103 | Self::GA104 | Self::GA106 | Self::GA107 => { 82 Architecture::Ampere 83 } 84 Self::AD102 | Self::AD103 | Self::AD104 | Self::AD106 | Self::AD107 => { 85 Architecture::Ada 86 } 87 } 88 } 89 } 90 91 // TODO 92 // 93 // The resulting strings are used to generate firmware paths, hence the 94 // generated strings have to be stable. 95 // 96 // Hence, replace with something like strum_macros derive(Display). 97 // 98 // For now, redirect to fmt::Debug for convenience. 99 impl fmt::Display for Chipset { 100 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { 101 write!(f, "{self:?}") 102 } 103 } 104 105 /// Enum representation of the GPU generation. 106 #[derive(fmt::Debug)] 107 pub(crate) enum Architecture { 108 Turing = 0x16, 109 Ampere = 0x17, 110 Ada = 0x19, 111 } 112 113 impl TryFrom<u8> for Architecture { 114 type Error = Error; 115 116 fn try_from(value: u8) -> Result<Self> { 117 match value { 118 0x16 => Ok(Self::Turing), 119 0x17 => Ok(Self::Ampere), 120 0x19 => Ok(Self::Ada), 121 _ => Err(ENODEV), 122 } 123 } 124 } 125 126 pub(crate) struct Revision { 127 major: u8, 128 minor: u8, 129 } 130 131 impl Revision { 132 fn from_boot0(boot0: regs::NV_PMC_BOOT_0) -> Self { 133 Self { 134 major: boot0.major_revision(), 135 minor: boot0.minor_revision(), 136 } 137 } 138 } 139 140 impl fmt::Display for Revision { 141 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { 142 write!(f, "{:x}.{:x}", self.major, self.minor) 143 } 144 } 145 146 /// Structure holding the metadata of the GPU. 147 pub(crate) struct Spec { 148 chipset: Chipset, 149 /// The revision of the chipset. 150 revision: Revision, 151 } 152 153 impl Spec { 154 fn new(bar: &Bar0) -> Result<Spec> { 155 let boot0 = regs::NV_PMC_BOOT_0::read(bar); 156 157 Ok(Self { 158 chipset: boot0.chipset()?, 159 revision: Revision::from_boot0(boot0), 160 }) 161 } 162 } 163 164 /// Structure holding the resources required to operate the GPU. 165 #[pin_data(PinnedDrop)] 166 pub(crate) struct Gpu { 167 spec: Spec, 168 /// MMIO mapping of PCI BAR 0 169 bar: Devres<Bar0>, 170 fw: Firmware, 171 /// System memory page required for flushing all pending GPU-side memory writes done through 172 /// PCIE into system memory. 173 sysmem_flush: SysmemFlush, 174 } 175 176 #[pinned_drop] 177 impl PinnedDrop for Gpu { 178 fn drop(self: Pin<&mut Self>) { 179 // Unregister the sysmem flush page before we release it. 180 self.bar 181 .try_access_with(|b| self.sysmem_flush.unregister(b)); 182 } 183 } 184 185 impl Gpu { 186 pub(crate) fn new( 187 pdev: &pci::Device<device::Bound>, 188 devres_bar: Devres<Bar0>, 189 ) -> Result<impl PinInit<Self>> { 190 let bar = devres_bar.access(pdev.as_ref())?; 191 let spec = Spec::new(bar)?; 192 let fw = Firmware::new(pdev.as_ref(), spec.chipset, FIRMWARE_VERSION)?; 193 194 dev_info!( 195 pdev.as_ref(), 196 "NVIDIA (Chipset: {}, Architecture: {:?}, Revision: {})\n", 197 spec.chipset, 198 spec.chipset.arch(), 199 spec.revision 200 ); 201 202 // We must wait for GFW_BOOT completion before doing any significant setup on the GPU. 203 gfw::wait_gfw_boot_completion(bar) 204 .inspect_err(|_| dev_err!(pdev.as_ref(), "GFW boot did not complete"))?; 205 206 // System memory page required for sysmembar to properly flush into system memory. 207 let sysmem_flush = SysmemFlush::register(pdev.as_ref(), bar, spec.chipset)?; 208 209 let gsp_falcon = Falcon::<Gsp>::new( 210 pdev.as_ref(), 211 spec.chipset, 212 bar, 213 spec.chipset > Chipset::GA100, 214 )?; 215 gsp_falcon.clear_swgen0_intr(bar); 216 217 let _sec2_falcon = Falcon::<Sec2>::new(pdev.as_ref(), spec.chipset, bar, true)?; 218 219 let fb_layout = FbLayout::new(spec.chipset, bar)?; 220 dev_dbg!(pdev.as_ref(), "{:#x?}\n", fb_layout); 221 222 // Will be used in a later patch when fwsec firmware is needed. 223 let _bios = Vbios::new(pdev, bar)?; 224 225 Ok(pin_init!(Self { 226 spec, 227 bar: devres_bar, 228 fw, 229 sysmem_flush, 230 })) 231 } 232 } 233