Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 147 insertions, 0 deletions

diff --git a/drivers/scsi/ppa.h b/drivers/scsi/ppa.h
new file mode 100644
index 000000000..098bcf7b9
--- /dev/null
+++ b/drivers/scsi/ppa.h
@@ -0,0 +1,147 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*  Driver for the PPA3 parallel port SCSI HBA embedded in 
+ * the Iomega ZIP drive
+ * 
+ * (c) 1996     Grant R. Guenther  grant@torque.net
+ *              David Campbell
+ *
+ *      All comments to David.
+ */
+
+#ifndef _PPA_H
+#define _PPA_H
+
+#define   PPA_VERSION   "2.07 (for Linux 2.4.x)"
+
+/* 
+ * this driver has been hacked by Matteo Frigo (athena@theory.lcs.mit.edu)
+ * to support EPP and scatter-gather.                        [0.26-athena]
+ *
+ * additional hacks by David Campbell
+ * in response to this driver "mis-behaving" on his machine.
+ *      Fixed EPP to handle "software" changing of EPP port data direction.
+ *      Chased down EPP timeouts
+ *      Made this driver "kernel version friendly"           [0.28-athena]
+ *
+ * [ Stuff removed ]
+ *
+ * Corrected ppa.h for 2.1.x kernels (>=2.1.85)
+ * Modified "Nat Semi Kludge" for extended chipsets
+ *                                                      [1.41]
+ *
+ * Fixed id_probe for EPP 1.9 chipsets (misdetected as EPP 1.7)
+ *                                                      [1.42]
+ *
+ * Development solely for 2.1.x kernels from now on!
+ *                                                      [2.00]
+ *
+ * Hack and slash at the init code (EPP device check routine)
+ * Added INSANE option.
+ *                                                      [2.01]
+ *
+ * Patch applied to sync against the 2.1.x kernel code
+ * Included qboot_zip.sh
+ *                                                      [2.02]
+ *
+ * Cleaned up the mess left by someone else trying to fix the
+ * asm section to keep egcc happy. The asm section no longer
+ * exists, the nibble code is *almost* as fast as the asm code
+ * providing it is compiled with egcc.
+ *
+ * Other clean ups include the follow changes:
+ *    CONFIG_SCSI_PPA_HAVE_PEDANTIC => CONFIG_SCSI_IZIP_EPP16
+ *    added CONFIG_SCSI_IZIP_SLOW_CTR option
+ *                                                      [2.03]
+ *
+ * Use ppa_wait() to check for ready AND connected status bits
+ * Add ppa_wait() calls to ppa_completion()
+ *  by Peter Cherriman <pjc@ecs.soton.ac.uk> and
+ *     Tim Waugh <twaugh@redhat.com>
+ *							[2.04]
+ *
+ * Fix kernel panic on scsi timeout, 2000-08-18		[2.05]
+ *
+ * Avoid io_request_lock problems.
+ * John Cavan <johncavan@home.com>			[2.06]
+ *
+ * Busy wait for connected status bit in ppa_completion()
+ *  in order to cope with some hardware that has this bit low
+ *  for short periods of time.
+ * Add udelay() to ppa_select()
+ *  by Peter Cherriman <pjc@ecs.soton.ac.uk> and
+ *     Oleg Makarenko <omakarenko@cyberplat.ru>         
+ *                                                      [2.07]
+ */
+/* ------ END OF USER CONFIGURABLE PARAMETERS ----- */
+
+#include  <linux/stddef.h>
+#include  <linux/module.h>
+#include  <linux/kernel.h>
+#include  <linux/ioport.h>
+#include  <linux/delay.h>
+#include  <linux/proc_fs.h>
+#include  <linux/stat.h>
+#include  <linux/blkdev.h>
+#include  <linux/sched.h>
+#include  <linux/interrupt.h>
+
+#include  <asm/io.h>
+#include  <scsi/scsi_host.h>
+/* batteries not included :-) */
+
+/*
+ * modes in which the driver can operate 
+ */
+#define   PPA_AUTODETECT        0	/* Autodetect mode                */
+#define   PPA_NIBBLE            1	/* work in standard 4 bit mode    */
+#define   PPA_PS2               2	/* PS/2 byte mode         */
+#define   PPA_EPP_8             3	/* EPP mode, 8 bit                */
+#define   PPA_EPP_16            4	/* EPP mode, 16 bit               */
+#define   PPA_EPP_32            5	/* EPP mode, 32 bit               */
+#define   PPA_UNKNOWN           6	/* Just in case...                */
+
+static char *PPA_MODE_STRING[] =
+{
+    "Autodetect",
+    "SPP",
+    "PS/2",
+    "EPP 8 bit",
+    "EPP 16 bit",
+    "EPP 32 bit",
+    "Unknown"};
+
+/* other options */
+#define PPA_BURST_SIZE	512	/* data burst size */
+#define PPA_SELECT_TMO  5000	/* how long to wait for target ? */
+#define PPA_SPIN_TMO    50000	/* ppa_wait loop limiter */
+#define PPA_RECON_TMO   500	/* scsi reconnection loop limiter */
+#define PPA_DEBUG	0	/* debugging option */
+#define IN_EPP_MODE(x) (x == PPA_EPP_8 || x == PPA_EPP_16 || x == PPA_EPP_32)
+
+/* args to ppa_connect */
+#define CONNECT_EPP_MAYBE 1
+#define CONNECT_NORMAL  0
+
+#define r_dtr(x)        (unsigned char)inb((x))
+#define r_str(x)        (unsigned char)inb((x)+1)
+#define r_ctr(x)        (unsigned char)inb((x)+2)
+#define r_epp(x)        (unsigned char)inb((x)+4)
+#define r_fifo(x)       (unsigned char)inb((x)) /* x must be base_hi */
+					/* On PCI is base+0x400 != base_hi */
+#define r_ecr(x)        (unsigned char)inb((x)+0x2) /* x must be base_hi */
+
+#define w_dtr(x,y)      outb(y, (x))
+#define w_str(x,y)      outb(y, (x)+1)
+#define w_epp(x,y)      outb(y, (x)+4)
+#define w_fifo(x,y)     outb(y, (x))	/* x must be base_hi */
+#define w_ecr(x,y)      outb(y, (x)+0x2)/* x must be base_hi */
+
+#ifdef CONFIG_SCSI_IZIP_SLOW_CTR
+#define w_ctr(x,y)      outb_p(y, (x)+2)
+#else
+#define w_ctr(x,y)      outb(y, (x)+2)
+#endif
+
+static int ppa_engine(ppa_struct *, struct scsi_cmnd *);
+
+#endif				/* _PPA_H */