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Brent Casavant 22329b511a [PATCH] ioc4: Core driver rewrite ... This series of patches reworks the configuration and internal structure of the SGI IOC4 I/O controller device drivers. These changes are motivated by several factors: - The IOC4 chip PCI resources are of mixed use between functions (i.e. multiple functions are handled in the same address range, sometimes within the same register), muddling resource ownership and initialization issues. Centralizing this ownership in a core driver is desirable. - The IOC4 chip implements multiple functions (serial, IDE, others not yet implemented in the mainline kernel) but is not a multifunction PCI device. In order to properly handle device addition and removal as well as module insertion and deletion, an intermediary IOC4-specific driver layer is needed to handle these operations cleanly. - All IOC4 drivers are currently enabled by a single CONFIG value. As not all systems need all IOC4 functions, it is desireable to enable these drivers independently. - The current IOC4 core driver will trigger loading of all function-level drivers, as it makes direct calls to them. This situation should be reversed (i.e. function-level drivers cause loading of core driver) in order to maintain a clear and least-surprise driver loading model. - IOC4 hardware design necessitates some driver-level dependency on the PCI bus clock speed. Current code assumes a 66MHz bus, but the speed should be autodetected and appropriate compensation taken. This patch series effects the above changes by a newly and better designed IOC4 core driver with which the function-level drivers can register and deregister themselves upon module insertion/removal. By tracking these modules, device addition/removal is also handled properly. PCI resource management and ownership issues are centralized in this core driver, and IOC4-wide configuration actions such as bus speed detection are also handled in this core driver. This patch: The SGI IOC4 I/O controller chip implements multiple functions, though it is not a multi-function PCI device. Additionally, various PCI resources of the IOC4 are shared by multiple hardware functions, and thus resource ownership by driver is not clearly delineated. Due to the current driver design, all core and subordinate drivers must be loaded, or none, which is undesirable if not all IOC4 hardware features are being used. This patch reorganizes the IOC4 drivers so that the core driver provides a subdriver registration service. Through appropriate callbacks the subdrivers can now handle device addition and removal, as well as module insertion and deletion (though the IOC4 IDE driver requires further work before module deletion will work). The core driver now takes care of allocating PCI resources and data which must be shared between subdrivers, to clearly delineate module ownership of these items. Signed-off-by: Brent Casavant <bcasavan@sgi.com> Acked-by: Pat Gefre <pfg@sgi.com Acked-by: Jeremy Higdon <jeremy@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		20 years ago
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cpm_uart	[PATCH] cpm_uart: Route SCC2 pins for the STx GP3 board	20 years ago
jsm	[PATCH] make lots of things static	20 years ago
8250.c	When we detect that a 16550 was in fact part of a NatSemi SuperIO chip	20 years ago
8250.h	Linux-2.6.12-rc2	20 years ago
8250_acorn.c	Linux-2.6.12-rc2	20 years ago
8250_acpi.c	Linux-2.6.12-rc2	20 years ago
8250_early.c	Linux-2.6.12-rc2	20 years ago
8250_gsc.c	Linux-2.6.12-rc2	20 years ago
8250_hp300.c	[PATCH] Serial: Convert 8250_hp300 to use serial8250_{un,}register_port	20 years ago
8250_pci.c	[PATCH] 8250_pci.c: add comment about enum sorting order	20 years ago
8250_pnp.c	Linux-2.6.12-rc2	20 years ago
21285.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
68328serial.c	Linux-2.6.12-rc2	20 years ago
68328serial.h	Linux-2.6.12-rc2	20 years ago
68360serial.c	Linux-2.6.12-rc2	20 years ago
Kconfig	[PATCH] ppc64 iSeries: allow build with no PCI	20 years ago
Makefile	Linux-2.6.12-rc2	20 years ago
amba-pl010.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
amba-pl011.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
au1x00_uart.c	Linux-2.6.12-rc2	20 years ago
bast_sio.c	Linux-2.6.12-rc2	20 years ago
clps711x.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
crisv10.c	Linux-2.6.12-rc2	20 years ago
crisv10.h	Linux-2.6.12-rc2	20 years ago
dz.c	Linux-2.6.12-rc2	20 years ago
dz.h	Linux-2.6.12-rc2	20 years ago
icom.c	Linux-2.6.12-rc2	20 years ago
icom.h	Linux-2.6.12-rc2	20 years ago
imx.c	[PATCH] ARM: 2654/1: i.MX UART initialization sets and honors UFCR value	20 years ago
ioc4_serial.c	[PATCH] ioc4: Core driver rewrite	20 years ago
ip22zilog.c	Linux-2.6.12-rc2	20 years ago
ip22zilog.h	Linux-2.6.12-rc2	20 years ago
m32r_sio.c	Linux-2.6.12-rc2	20 years ago
m32r_sio.h	Linux-2.6.12-rc2	20 years ago
m32r_sio_reg.h	Linux-2.6.12-rc2	20 years ago
mcfserial.c	Linux-2.6.12-rc2	20 years ago
mcfserial.h	Linux-2.6.12-rc2	20 years ago
mpc52xx_uart.c	Linux-2.6.12-rc2	20 years ago
mpsc.c	[PATCH] ppc annotations: mpsc	20 years ago
mpsc.h	[PATCH] ppc annotations: mpsc	20 years ago
mux.c	Linux-2.6.12-rc2	20 years ago
pmac_zilog.c	[PATCH] fix u32 vs. pm_message_t in drivers/	20 years ago
pmac_zilog.h	Linux-2.6.12-rc2	20 years ago
pxa.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
s3c2410.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
sa1100.c	[PATCH] Serial: remove unused variable in sa1100 driver	20 years ago
serial_core.c	Linux-2.6.12-rc2	20 years ago
serial_cs.c	[PATCH] serial_cs device identification fix	20 years ago
serial_lh7a40x.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
serial_txx9.c	[PATCH] Serial: Add uart_insert_char()	20 years ago
sh-sci.c	Linux-2.6.12-rc2	20 years ago
sh-sci.h	Linux-2.6.12-rc2	20 years ago
sn_console.c	[PATCH] sn_console: make sal_console_uart static again	20 years ago
suncore.c	Linux-2.6.12-rc2	20 years ago
suncore.h	Linux-2.6.12-rc2	20 years ago
sunsab.c	[SUNSAB]: Defer register updates until transmitter is idle.	20 years ago
sunsab.h	[SUNSAB]: Defer register updates until transmitter is idle.	20 years ago
sunsu.c	[SPARC64]: In sunsu driver, make sure to fully init chip for kbd/ms	20 years ago
sunzilog.c	Linux-2.6.12-rc2	20 years ago
sunzilog.h	Linux-2.6.12-rc2	20 years ago
uart00.c	Linux-2.6.12-rc2	20 years ago
v850e_uart.c	Linux-2.6.12-rc2	20 years ago
vr41xx_siu.c	[PATCH] serial: update NEC VR4100 series serial support	20 years ago